WO2022170762A1 - Rubber backing plate for subway rail transit, composition thereof, and preparation method therefor - Google Patents

Rubber backing plate for subway rail transit, composition thereof, and preparation method therefor Download PDF

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Publication number
WO2022170762A1
WO2022170762A1 PCT/CN2021/118801 CN2021118801W WO2022170762A1 WO 2022170762 A1 WO2022170762 A1 WO 2022170762A1 CN 2021118801 W CN2021118801 W CN 2021118801W WO 2022170762 A1 WO2022170762 A1 WO 2022170762A1
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WIPO (PCT)
Prior art keywords
parts
rubber
rail transit
backing plate
subway rail
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PCT/CN2021/118801
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French (fr)
Chinese (zh)
Inventor
王新
王博
许孔斌
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浙江天铁实业股份有限公司
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Publication of WO2022170762A1 publication Critical patent/WO2022170762A1/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers

Definitions

  • the invention relates to the field of rubber materials, in particular to a composition for a rubber backing plate for subway rail transit, a rubber backing plate for subway rail transit made of the composition, and a preparation method for the rubber backing plate for subway rail transit.
  • the rubber pad between the rail and the sleeper in rail transit is one of the important parts of the track. Since the rubber pad is the closest elastic element to the wheel-rail power system, it can buffer the vibration and impact of the high-speed vehicle passing by, so it plays a direct and important role in the vibration and noise reduction of the track.
  • the domestic under-rail pads are generally made of black polymer materials.
  • the rail pads made of black polymer materials generally have the following problems: 1. Poor mechanical properties, easy to be damaged under pressure; 2. Insufficient elasticity and poor vibration reduction effect; 3. Insufficient heat resistance and aging resistance, Poor use of timeliness; 4, poor insulation, easy to affect the vehicle's signal system.
  • the present invention is made to solve the above problems, and aims to provide a rubber pad for subway rail transit with high mechanical properties that can meet various rail traffic environments, and a composition and preparation method for preparing the pad.
  • the invention provides a composition for a rubber backing plate for subway rail transit, which is characterized in that the raw materials include the following components in parts by weight: 100 parts of base rubber, 20-100 parts of filler, 0-5 parts of filler Silane coupling agent, 5-35 parts of active agent, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of antioxidant, 3-15 parts of functional additives, 0.3-2.5 parts of vulcanizing agent and 2- 8 parts vulcanization accelerator.
  • the base rubber is any one of natural rubber, styrene-butadiene rubber, cis-butadiene rubber, ethylene-propylene rubber or neoprene rubber. one or more.
  • composition for a rubber backing plate for subway rail transit may also have the following characteristics: wherein the filler is white carbon black and/or calcium carbonate.
  • composition for a rubber backing plate for subway rail transit may also have the following characteristics: wherein the active agent is a mixture composed of zinc oxide and stearic acid.
  • the functional auxiliary agent is any one of microcrystalline wax, WB215, WB42, polyethylene glycol 4000 or petroleum resin one or more.
  • the vulcanization accelerator may be dibenzothiazole disulfide, N-cyclohexyl-2-benzothiazole sulfenamide , any one or more of tetramethylthiuram disulfide, zinc dibutyl dithiocarbamate, 4,4'-dimorpholine disulfide, and dicumyl peroxide.
  • composition for a rubber backing plate for subway rail transit provided by the present invention, it can also have the following characteristics: wherein the pigment is any one of titanium dioxide, chrome oxide green, chrome yellow, iron oxide red, carbon black or ultramarine blue one or more.
  • the present invention also provides a rubber pad for subway rail transit, which is made of any one of the above-mentioned compositions.
  • the rubber backing plate for subway rail transit may also have the following features: a plate body; a strip distribution protrusion, which is arranged on one surface of the plate body; and a point distribution protrusion, and the strip distribution protrusion are arranged on the same surface, wherein the strip distribution protrusions are formed adjacent to the point distribution protrusions, and the plate body is integrally formed with the strip distribution protrusions and the point distribution protrusions.
  • the rubber backing plate for subway rail transit may also have the following features: a plate body; and a protruding part, which is provided on one surface of the plate body, wherein the protruding part includes a plurality of sets of protruding parts , multiple groups of protruding parts are distributed from one edge of the plate body to another edge opposite to one edge, and the widths of the multiple sets of protruding parts gradually decrease from one edge to the other edge.
  • the present invention also provides a method for preparing a rubber backing plate for subway rail transit, which is used for preparing the above-mentioned rubber backing plate for subway rail transit.
  • Step 2 add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 40 ° C ⁇ 55 ° C, add a vulcanizing agent and a vulcanization accelerator, turn it, and pack it.
  • the film is cooled and parked to obtain the B-segment rubber; Step 3, cut the B-segment glue as required to obtain the rubber embryo; Step 4, put the rubber embryo into the corresponding mold and vulcanize it, that is, the rubber for subway rail transit is obtained. backing plate.
  • the composition for a rubber backing plate for subway rail transit includes: 100 parts of base rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of active agent, 0- 15 parts of plasticizers, 3-10 parts of pigments, 1-3 parts of antioxidants, 3-15 parts of functional additives, 0.3-2.5 parts of vulcanizing agents and 2-8 parts of vulcanization accelerators, so compared to traditional black rubber Backing plate, the rubber backing plate for subway rail transit made of the composition has been significantly improved in terms of mechanical properties such as Shore hardness and tensile strength, and is suitable for various current rail transit sections.
  • the preparation method of the rubber pad for subway rail transit involved in the present invention because the operation of cooling and parking for 10 hours is carried out in the first step, this can not only ensure the shrinkage stabilizer of the A-section rubber in the subsequent steps, but also can The various additives are fully infiltrated and fused with the base rubber bracket, so as to improve the mechanical strength of the rubber pad for subway rail transit.
  • Natural rubber type NR-1#, produced by Hainan Natural Rubber Industry Group Co., Ltd.
  • EPDM rubber, type 4045M produced by Shanghai Sinopec Mitsui Elastomer Co., Ltd.
  • EPDM rubber type 3092PM, produced by Shanghai Sinopec Mitsui Elastomer Co., Ltd.
  • Titanium dioxide type R960, produced by The Chemous Company, LLC.
  • Paraffin oil type 1968A produced by H&R China (Ningbo) Co., Ltd.
  • Silane coupling agent Si69 produced by Nanjing Aocheng Chemical Co., Ltd.
  • Petroleum resin type TL100, produced by RUTGERS Germany GmbH.
  • Dispersant WB215 manufactured by Schill+Seilacher 'struktol' GmbH.
  • Zinc oxide type TY-100, produced by Luoyang Lantian Chemical Technology Co., Ltd.
  • Polyethylene wax type WB42, manufactured by Struktol Company of America.
  • Polyethylene glycol is polyethylene glycol 4000, namely PEG4000, produced by Far Eastern Petrochemical (Yangzhou) Co., Ltd.
  • Chromium oxide green, SGC type produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
  • Iron oxide red type S103, produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
  • Carbon black, N330 type produced by Jining Bora Carbon Materials Co., Ltd.
  • Ultramarine, U08 type produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
  • Anti-aging agent SPC produced by Taizhou Huangyan Donghai Chemical Co., Ltd.
  • Anti-aging agent 2246 produced by Taizhou Huangyan Donghai Chemical Co., Ltd.
  • Anti-aging agent MB produced by BONDTEK CHEMICALS L.L.C.
  • Dibenzothiazole disulfide namely vulcanization accelerator DM, is produced by SOVMER CHEMICAL CO., LTD.
  • N-cyclohexyl-2-benzothiazole sulfenamide namely vulcanization accelerator CZ, produced by Weilin New Material Technology Co., Ltd.
  • Tetramethylthiuram disulfide namely vulcanization accelerator TT, was produced by Zhenjiang Zhenbang Chemical Co., Ltd.
  • Zinc dibutyl dithiocarbamate namely vulcanization accelerator ZDBC-75, produced by Jiaxing Beihua Polymer Additives Co., Ltd.
  • 4,4'-Dimorpholine disulfide namely vulcanization accelerator DTDM-80, produced by Jiaxing Beihua Polymer Additives Co., Ltd.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • NR-1# natural rubber 100 parts of NR-1# natural rubber, 25 parts of white carbon black, 1 part of silane coupling agent, 10 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax , 1 part WB215, 1.5 parts PEG4000, 5 parts titanium dioxide, 2 parts chrome yellow, 0.8 part sulfur, 1 part dibenzothiazole disulfide, 1 part N-cyclohexyl-2-benzothiazole sulfenamide and 1 part Tetramethylthiuram disulfide.
  • Step 1 add 100 parts of NR-1# natural rubber into the internal mixer, and after refining for 7 minutes, add 1 part of silane coupling agent, 10 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of Anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome yellow, Banbury for 2 minutes, add 16.7 parts of white carbon black and mix for 5 minutes, finally add 8.3 parts of white carbon black, Mixing for 4 minutes, control the internal temperature of the mixer to be 100 °C, remove the glue through the lifting bolt, cool it, and park it for 10 hours to obtain the A-stage glue;
  • Step 2 add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, the roll distance is adjusted to 1.0 mm, 0.8 parts of sulfur, 1 part of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide and 1 part of tetramethylthiuram disulfide were rolled for 4 times, packaged for 4 times, and thinned for 5 times with a small roll distance, and the sheet was cooled and parked to obtain B segment glue;
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into a corresponding mold, and vulcanize it to obtain a rubber backing plate composition for subway rail transit.
  • the performance test is carried out on the rubber backing plate composition for subway rail transit prepared in this example, wherein the test method for Shore hardness is GB/T 531.1-2008, the test method for tensile strength is GB/T 528-2009, and the tensile strength
  • the test method for elongation is GB/T 528-2009
  • the test method for constant elongation stress is GB/T 528-2009
  • the test method for static stiffness is according to Appendix A of TB/T 3395.1-2015.
  • NR-1# natural rubber, silica, silane coupling agent, zinc oxide, stearic acid, anti-aging agent SPC, and anti-aging agent 2246 are used.
  • the shore hardness of the rubber backing plate for subway rail transit provided in this embodiment is 49 shoreA, the tensile strength is 25.1MPa, the elongation at break is 540%, the 200% tensile stress is 3.1MPa, and the static stiffness is 25kN/mm .
  • the static stiffness of the rubber backing plate for rail transit in this embodiment is 25kN/mm, it is necessary for the outer strand of the subway track curve (curve radius less than or equal to 400m) of the subway with a running axle load of 14t.
  • the static stiffness of the rubber pad for rail transit is matched, and it is especially suitable for installation at the outer strand of the curve of the subway track whose radius is less than or equal to 400m.
  • the stabilizer can also fully infiltrate and fuse the various additives with the base rubber bracket, thereby improving the mechanical strength of the rubber pad for subway rail transit.
  • step 2 because in step 2, the operations of thin rolling with a small roll pitch 5 times, and sheet cooling and parking are performed, so this can not only make the powder
  • the material can be fully dispersed and fused in the A-stage rubber, and it can also avoid scorch caused by excessive processing temperature.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • NR-1# natural rubber 100 parts of NR-1# natural rubber, 25 parts of white carbon black, 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax , 1 part WB215, 1.5 parts PEG4000, 5 parts titanium dioxide, 0.3 part carbon black, 0.8 part sulfur, 1 part dibenzothiazole disulfide, 2 parts N-cyclohexyl-2-benzothiazole sulfenamide and 2 parts Tetramethylthiuram disulfide.
  • Step 1 add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of Anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide and 0.3 parts of carbon black, Banbury for 2 minutes, add 16.7 parts of white carbon black and mix for 5 minutes, and finally add 8.3 parts of white carbon black, Mixing for 4 minutes, control the internal temperature of the mixer to be 100 °C, remove the glue through the lifting bolt, cool it, and park it for 10 hours to obtain the A-stage glue;
  • Step 2 add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, the roll distance is adjusted to 1.0 mm, 0.8 parts of sulfur, 1 part of dibenzothiazole disulfide, 2 parts of N-Cyclohexyl-2-benzothiazole sulfenamide and 2 parts of tetramethylthiuram disulfide were rolled 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain B segment glue;
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into a corresponding mold, and vulcanize it to obtain a rubber backing plate composition for subway rail transit.
  • the static stiffness of the rubber pad for rail transit in this embodiment is 30kN/mm, it is different from the subway track curve ( The static stiffness of the rubber pad for rail transit needs to be matched when the curve radius is greater than 400m), so the composition of the rubber pad for subway rail transit in this embodiment is particularly suitable for manufacturing and installing on the subway track with a curve radius greater than 400m. Rubber pads in corners.
  • the rubber backing plate composition for subway rail transit provided in this example is relatively Not only the Shore hardness of the rubber backing plate composition for subway rail transit in Example 1 is unexpectedly improved, but also the 200% tensile strength at constant elongation is also significantly improved.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • NR-1# natural rubber 100 parts NR-1# natural rubber, 50 parts white carbon black, 25 parts calcium carbonate, 2 parts silane coupling agent, 2 parts paraffin oil, 5 parts zinc oxide, 1.5 parts stearic acid, 1 part antioxidant SPC, 1 part Parts of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chromium oxide green, 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl- 2-benzothiazole sulfenamide and 0.3 part of tetramethylthiuram disulfide.
  • Step 1 add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging Agent SPC, 1 part of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome oxide green, Banbury for 2 minutes, add 33.3 parts of white carbon black, 16.7 parts of calcium carbonate to mix Knead for 5 minutes, finally add 16.7 parts of white carbon black and 8.3 parts of calcium carbonate, mix for 4 minutes, control the internal temperature of the mixer to 100 ° C, lift the plug to discharge the glue, cool, and park for 10 hours to obtain the A-stage rubber;
  • step 2 the A-stage material is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2- Benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 Put the rubber embryo into the corresponding mold and vulcanize it to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment because the static stiffness of the rubber backing plate for rail transit in this embodiment is 35kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 35 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the inner strand of the curve of the subway track with a running axle load of 14t and the curve radius is less than or equal to 400m.
  • the rubber backing plate composition for subway rail transit in this embodiment uses a filler composed of 50 parts of white carbon black and 25 parts of calcium carbonate
  • the rubber backing plate for subway rail transit provided by this embodiment is The Shore hardness of the composition is further improved compared to the rubber backing plate composition for subway rail transit in Examples 1 and 2.
  • the rubber backing plate composition for subway rail transit in this embodiment can still have good mechanical properties such as tensile strength, elongation at break and 200% tensile stress while maintaining high hardness.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • NR-1# natural rubber 100 parts NR-1# natural rubber, 50 parts white carbon black, 25 parts calcium carbonate, 2 parts silane coupling agent, 2 parts paraffin oil, 5 parts zinc oxide, 1.5 parts stearic acid, 1 part antioxidant SPC, 1 part Parts of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chrome yellow, 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2 - benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide.
  • Step 1 add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging Agent SPC, 1 part of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome yellow, Banbury for 2 minutes, add 33.3 parts of white carbon black, 16.7 parts of calcium carbonate and mix 5min, finally add 16.7 parts of white carbon black and 8.3 parts of calcium carbonate, mix for 4min, control the internal temperature of the mixer to 100 °C, lift the plug to discharge the glue, cool it, and park it for 10h to obtain the A-stage glue;
  • step 2 the A-stage material is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2- Benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment is 40 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the outer strand of the curve radius of the subway track with a running axle load of 16t or less than 400m.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • NR-1# natural rubber 100 parts NR-1# natural rubber, 60 parts white carbon black, 5 parts calcium carbonate, 30 parts zinc oxide, 1.5 parts stearic acid, 1.5 parts antioxidant SPC, 1 part antioxidant 2246, 2 parts microcrystalline wax, 1 part Parts WB215, 5 parts PEG4000, 5 parts titanium dioxide, 2 parts ultramarine, 0.8 parts sulfur, 1.3 parts dibenzothiazole disulfide, 2.5 parts N-cyclohexyl-2-benzothiazole sulfenamide, and 1.3 parts tetrakis disulfide Methylthiuram.
  • Step 1 100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 5 parts of titanium dioxide, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of ultramarine blue, Banbury for 2 minutes, add 40 parts of white carbon black, 3.3 parts of calcium carbonate and mix for 5 minutes, and finally add 20 parts of white carbon Black, 1.7 parts of calcium carbonate, mix for 4 minutes, control the internal temperature of the internal mixer to 100 ° C, lift the plug to remove the glue, cool, and park for 10 hours to obtain the A-stage rubber;
  • step 2 the material of section A is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.8 parts of sulfur, 1.3 parts of dibenzothiazole disulfide, 2.5 parts of N-cyclohexyl-2- Benzothiazole sulfenamide and 1.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment is 110 kN/mm.
  • the material is particularly suitable for the manufacture of rubber pads installed on the linear tracks of heavy-duty railways.
  • the rubber backing plate composition for subway rail transit in the present embodiment adopts 0.8 parts of sulfur, 1.3 parts of dibenzothiazole disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1.3 parts of dibenzothiazole disulfide.
  • the vulcanized tetramethylthiuram constitutes a vulcanization system, so the 200% constant tensile force of the rubber backing plate composition for subway rail transit in Examples 1 to 3 is greatly improved.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • Step 1 add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 12 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Chromium oxide green, mix for 2min, add 26.7 parts of white carbon black, 14.7 parts of calcium carbonate and mix for 5min, finally add 13.3 parts of silica, 7.3 parts of calcium carbonate and 12 parts of paraffin oil, mix for 4min, control the internal mixer
  • the temperature is 100 °C, the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A-section glue;
  • Step 2 adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added.
  • Zinc formate 1.3 parts of 4,4'-dimorpholine disulfide, 0.5 part of tetramethylthiuram disulfide, smelted 4 times, packaged 4 times, thinly passed 5 times with a small roll distance, and then cooled and parked.
  • Get B segment glue 1.3 parts of 4,4'-dimorpholine disulfide, 0.5 part of tetramethylthiuram disulfide, smelted 4 times, packaged 4 times, thinly passed 5 times with a small roll distance, and then cooled and parked.
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment is 35 kN/mm. It is especially suitable for the manufacture of rubber pads installed at the bends of the subway tracks (the inner strand of the curve, the radius of the curve is less than or equal to 400m) of the subway with a running axle load of 14t.
  • the rubber pad composition in this embodiment is It is more able to withstand a wider range of temperature changes and has better weather resistance.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • Step 1 add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 8 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Chrome yellow, banbury for 2 minutes, add 30 parts of white carbon black, 16.7 parts of calcium carbonate and mix for 5 minutes, finally add 15 parts of white carbon black, 8.3 parts of calcium carbonate and 8 parts of paraffin oil, mix for 4 minutes, control the internal temperature of the internal mixer At 100 °C, the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A section of glue;
  • Step 2 adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added.
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment is 40 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the outer strand of the curve radius of the subway track with a running axle load of 16t or less than 400m.
  • the rubber backing plate composition for subway rail transit involved in this embodiment under the situation that is roughly similar to the rubber backing plate composition for subway rail transit in Example 6, the amount of plasticizer paraffin oil is reduced, but the amount of plasticizer paraffin oil is reduced. As a result, the tensile strength and 200% tensile strength of the rubber backing plate composition for subway rail transit in this embodiment are unexpectedly improved.
  • a rubber backing plate composition for subway rail transit which is prepared from the following raw materials in parts by weight:
  • Step 1 add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 9 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Iron oxide red, Banbury for 2min, add 36.7 parts of silica, 13.3 parts of calcium carbonate and mix for 5min, finally add 18.3 parts of silica, 6.7 parts of calcium carbonate and 9 parts of paraffin oil for coating, mix for 4min, control Banbury
  • the internal temperature of the machine is 100 °C, and the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A-section glue;
  • Step 2 adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added.
  • Get B segment glue
  • Step 3 cutting the B-segment glue as required to obtain a glue embryo
  • Step 4 put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
  • the rubber backing plate composition for subway rail transit in this embodiment is 50 kN/mm. It is especially suitable for the manufacture of rubber pads installed at the bends of the subway track with a running axle load of 16t and the curve radius greater than 400m.
  • the rubber backing plate composition for subway rail transit involved in this example, in the case of being substantially similar to the rubber backing sheet composition for subway rail transit in Examples 5 and 6, only the plasticizer paraffin oil and On the contrary, the amount of the filler makes the 200% constant tensile strength of the rubber backing plate composition for subway rail transit in this embodiment unexpectedly improved.

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Abstract

Provided in the present invention is a rubber backing plate for subway rail transit, a composition thereof, and a preparation method therefor, relating to the field of rubber materials. The composition of the rubber backing plate for subway rail transit of the present invention comprises: 100 parts of matrix rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of active agent, 0-15 parts of plasticising agent, 3-10 parts of pigment, 1-3 parts of anti-aging agent, 3-15 parts of functional adjuvant, 0.3-2.5 parts of vulcanising agent, and 2-8 parts of vulcanisation accelerator. Compared to traditional black rubber backing plates, the rubber backing plate for subway rail transit made from said composition is significantly improved in terms of mechanical properties such as Shore hardness and tensile strength, and is suitable for various current rail transit sections.

Description

地铁轨道交通用橡胶垫板及其组合物、制备方法Rubber backing plate for subway rail transit and its composition and preparation method 技术领域technical field
本发明涉及橡胶材料领域，具体涉及一种地铁轨道交通用橡胶垫板用组合物、采用该组合物制成的地铁轨道交通用橡胶垫板以及该地铁轨道交通用橡胶垫板的制备方法。The invention relates to the field of rubber materials, in particular to a composition for a rubber backing plate for subway rail transit, a rubber backing plate for subway rail transit made of the composition, and a preparation method for the rubber backing plate for subway rail transit.
背景技术Background technique
轨道交通中钢轨和轨枕之间的橡胶垫板，是轨道的重要部件之一。由于该橡胶垫板是距离轮轨动力系统最近的弹性元件，可以缓冲高速车辆通过时的振动和冲击，因此对于轨道的减振降噪起着直接和重要的作用。The rubber pad between the rail and the sleeper in rail transit is one of the important parts of the track. Since the rubber pad is the closest elastic element to the wheel-rail power system, it can buffer the vibration and impact of the high-speed vehicle passing by, so it plays a direct and important role in the vibration and noise reduction of the track.
目前国内轨下垫板普遍采用的是黑色高分子聚合物材料制作而成。采用的是黑色高分子聚合物材料制作的轨下垫板普遍存在如下问题：1、力学性能差，受压易破损；2、弹性不足，减振效果差；3、耐热性耐老化不足，使用时效性差；4、绝缘性差，容易影响车辆的信号系统。At present, the domestic under-rail pads are generally made of black polymer materials. The rail pads made of black polymer materials generally have the following problems: 1. Poor mechanical properties, easy to be damaged under pressure; 2. Insufficient elasticity and poor vibration reduction effect; 3. Insufficient heat resistance and aging resistance, Poor use of timeliness; 4, poor insulation, easy to affect the vehicle's signal system.
发明内容SUMMARY OF THE INVENTION
本发明是为了解决上述问题而进行的，目的在于提供一种具有高力学性能的能够满足多种轨道交通环境的地铁轨道交通用橡胶垫板及用于制备该垫板的组合物和制备方法。The present invention is made to solve the above problems, and aims to provide a rubber pad for subway rail transit with high mechanical properties that can meet various rail traffic environments, and a composition and preparation method for preparing the pad.
本发明提供了一种地铁轨道交通用橡胶垫板用组合物，具有这样的特征，原料包括下述按重量份计的组分：100份基体橡胶、20-100份填充剂、0-5份硅烷偶联剂、5-35份活性剂、0-15份增塑剂、3-10份颜料、1-3份防老剂、3-15份功能助剂、0.3-2.5份硫化剂以及2-8份硫化促进剂。The invention provides a composition for a rubber backing plate for subway rail transit, which is characterized in that the raw materials include the following components in parts by weight: 100 parts of base rubber, 20-100 parts of filler, 0-5 parts of filler Silane coupling agent, 5-35 parts of active agent, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of antioxidant, 3-15 parts of functional additives, 0.3-2.5 parts of vulcanizing agent and 2- 8 parts vulcanization accelerator.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，基体橡胶为天然橡胶、丁苯橡胶、顺丁橡胶、乙丙橡胶或氯丁橡胶中的任意一种或多种。In the composition for a rubber backing plate for subway rail transit provided by the present invention, it may also have the following characteristics: wherein, the base rubber is any one of natural rubber, styrene-butadiene rubber, cis-butadiene rubber, ethylene-propylene rubber or neoprene rubber. one or more.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，填充剂为白炭黑和/或碳酸钙。The composition for a rubber backing plate for subway rail transit provided by the present invention may also have the following characteristics: wherein the filler is white carbon black and/or calcium carbonate.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，活性剂为氧化锌与硬脂酸组成的混合物。The composition for a rubber backing plate for subway rail transit provided by the present invention may also have the following characteristics: wherein the active agent is a mixture composed of zinc oxide and stearic acid.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，功能助剂为微晶蜡、WB215、WB42、聚乙二醇4000或石油树脂中的任意一种或多种。In the composition for a rubber backing plate for subway rail transit provided by the present invention, it can also have the following characteristics: wherein, the functional auxiliary agent is any one of microcrystalline wax, WB215, WB42, polyethylene glycol 4000 or petroleum resin one or more.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，硫化促进剂为二硫化二苯并噻唑、N-环己基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆、二丁基二硫代氨基甲酸锌、4，4’-二硫化二吗啉、过氧化二异丙苯中的任意一种或多种。In the composition for a rubber backing plate for subway rail transit provided by the present invention, the vulcanization accelerator may be dibenzothiazole disulfide, N-cyclohexyl-2-benzothiazole sulfenamide , any one or more of tetramethylthiuram disulfide, zinc dibutyl dithiocarbamate, 4,4'-dimorpholine disulfide, and dicumyl peroxide.
在本发明提供的地铁轨道交通用橡胶垫板用组合物中，还可以具有这样的特征：其中，颜料为钛白粉、氧化铬绿、铬黄、氧化铁红、炭黑或群青中的任意一种或多种。In the composition for a rubber backing plate for subway rail transit provided by the present invention, it can also have the following characteristics: wherein the pigment is any one of titanium dioxide, chrome oxide green, chrome yellow, iron oxide red, carbon black or ultramarine blue one or more.
本发明还提供了一种地铁轨道交通用橡胶垫板，采用上述任意一种组合物制成。The present invention also provides a rubber pad for subway rail transit, which is made of any one of the above-mentioned compositions.
进一步，本发明提供的地铁轨道交通用橡胶垫板还可以具有这样的特征，具有：板体；条分布突起部，设置在板体的一个表面上；以及点分布突起部，与条分布突起部设置在同一个表面上，其中，条分布突起部与点分布突起部邻接形成，板体与条分布突起部以及点分布突起部一体形成。Further, the rubber backing plate for subway rail transit provided by the present invention may also have the following features: a plate body; a strip distribution protrusion, which is arranged on one surface of the plate body; and a point distribution protrusion, and the strip distribution protrusion are arranged on the same surface, wherein the strip distribution protrusions are formed adjacent to the point distribution protrusions, and the plate body is integrally formed with the strip distribution protrusions and the point distribution protrusions.
另外，在本发明提供的地铁轨道交通用橡胶垫板中，还可以具有这样的特征，具有：板体；以及突起部，设置在板体的一个表面上，其中，突起部包括多组突起部件，多组突起部件从板体的一个边缘分布至与一个边缘相对的另一个边缘，多组突起部件的宽度从一个边 缘朝另一个边缘逐渐减小。In addition, the rubber backing plate for subway rail transit provided by the present invention may also have the following features: a plate body; and a protruding part, which is provided on one surface of the plate body, wherein the protruding part includes a plurality of sets of protruding parts , multiple groups of protruding parts are distributed from one edge of the plate body to another edge opposite to one edge, and the widths of the multiple sets of protruding parts gradually decrease from one edge to the other edge.
本发明还提供了的地铁轨道交通用橡胶垫板的制备方法，用于制备上述的地铁轨道交通用橡胶垫板，具有这样的特征，包括如下步骤：步骤1，将基体橡胶加入密炼机中，炼制5min-8min后，加入活性剂、防老剂、功能助剂、硅烷偶联剂、颜料，密炼1min-2min，加入占总填充剂重量30％-40％的填充剂混炼3min-8min，最后加入剩余的填充剂以及增塑剂，混炼3min-5min，控制密炼机内部温度为95℃-125℃，通升栓排胶，冷却，停放8h-24h，得A段胶；步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在40℃～55℃，加入硫化剂以及硫化促进剂，翻炼，打包，小辊距薄通后，出片冷却停放，得B段胶；步骤3，将B段胶按需求进行裁切，得胶胚；步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。The present invention also provides a method for preparing a rubber backing plate for subway rail transit, which is used for preparing the above-mentioned rubber backing plate for subway rail transit. , After refining for 5min-8min, add active agent, anti-aging agent, functional additives, silane coupling agent, pigment, banbury for 1min-2min, add filler that accounts for 30%-40% of the total filler weight and mix for 3min- 8min, finally add the remaining fillers and plasticizers, mix for 3min-5min, control the internal temperature of the mixer to be 95℃-125℃, unload the glue through the lifting plug, cool it, and park it for 8h-24h to obtain the A-section glue; Step 2, add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 40 ° C ~ 55 ° C, add a vulcanizing agent and a vulcanization accelerator, turn it, and pack it. The film is cooled and parked to obtain the B-segment rubber; Step 3, cut the B-segment glue as required to obtain the rubber embryo; Step 4, put the rubber embryo into the corresponding mold and vulcanize it, that is, the rubber for subway rail transit is obtained. backing plate.
发明的作用与效果The role and effect of the invention
根据本发明所涉及的地铁轨道交通用橡胶垫板用组合物，因为包括：100份基体橡胶、20-100份填充剂、0-5份硅烷偶联剂、5-35份活性剂、0-15份增塑剂、3-10份颜料、1-3份防老剂、3-15份功能助剂、0.3-2.5份硫化剂以及2-8份硫化促进剂，所以，相对于传统的黑色橡胶垫板，采用该组合物制成的地铁轨道交通用橡胶垫板在邵氏硬度、拉伸强度等力学性能方面都得到了显著提升，适用于当前的多种轨道交通路段。According to the composition for a rubber backing plate for subway rail transit according to the present invention, it includes: 100 parts of base rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of active agent, 0- 15 parts of plasticizers, 3-10 parts of pigments, 1-3 parts of antioxidants, 3-15 parts of functional additives, 0.3-2.5 parts of vulcanizing agents and 2-8 parts of vulcanization accelerators, so compared to traditional black rubber Backing plate, the rubber backing plate for subway rail transit made of the composition has been significantly improved in terms of mechanical properties such as Shore hardness and tensile strength, and is suitable for various current rail transit sections.
根据本发明所涉及的地铁轨道交通用橡胶垫板的制备方法，因为在步骤一中进行了冷却停放10h的操作，所以这不仅能在后续的步骤中保证A段胶的收缩稳定剂，还能让各个助剂与基体橡胶支架充分浸润融合，从而能够提升地铁轨道交通用橡胶垫板的机械强度。According to the preparation method of the rubber pad for subway rail transit involved in the present invention, because the operation of cooling and parking for 10 hours is carried out in the first step, this can not only ensure the shrinkage stabilizer of the A-section rubber in the subsequent steps, but also can The various additives are fully infiltrated and fused with the base rubber bracket, so as to improve the mechanical strength of the rubber pad for subway rail transit.
具体实施方式Detailed ways
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，以下结合实施例对本发明作具体阐述。In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be described in detail below with reference to the embodiments.
下述实施例中使用的各个原料来源如下：The sources of each raw material used in the following examples are as follows:
天然橡胶，NR-1#型，海南天然橡胶产业集团股份有限公司生产。Natural rubber, type NR-1#, produced by Hainan Natural Rubber Industry Group Co., Ltd.
三元乙丙橡胶，4045M型，上海中石化三井弹性体有限公司生产。EPDM rubber, type 4045M, produced by Shanghai Sinopec Mitsui Elastomer Co., Ltd.
三元乙丙橡胶，3092PM型，上海中石化三井弹性体有限公司生产。EPDM rubber, type 3092PM, produced by Shanghai Sinopec Mitsui Elastomer Co., Ltd.
白炭黑，VN3GR型，赢创嘉联白炭黑(南平)有限公司生产。Silica, VN3GR type, produced by Evonik Jialian Silica (Nanping) Co., Ltd.
碳酸钙，轻质型，常山县恒大钙业有限公司生产。Calcium carbonate, light type, produced by Changshan Hengda Calcium Industry Co., Ltd.
钛白粉，R960型，The Chemous Company,LLC生产。Titanium dioxide, type R960, produced by The Chemous Company, LLC.
石蜡油，H&R China(Ningbo)Co.,Ltd生产的1968A型。Paraffin oil, type 1968A produced by H&R China (Ningbo) Co., Ltd.
硅烷偶联剂，南京奥诚化工有限公司生产的Si69。Silane coupling agent, Si69 produced by Nanjing Aocheng Chemical Co., Ltd.
石油树脂，TL100型，RUTGERS Germany GmbH公司生产。Petroleum resin, type TL100, produced by RUTGERS Germany GmbH.
微晶蜡，H&R China(Fushun)Co.,Ltd生产的9332F型。Microcrystalline wax, type 9332F produced by H&R China (Fushun) Co., Ltd.
分散剂WB215，Schill+Seilacher‘struktol’GmbH生产。Dispersant WB215, manufactured by Schill+Seilacher 'struktol' GmbH.
氧化锌，TY-100型，洛阳市蓝天化工科技有限公司生产。Zinc oxide, type TY-100, produced by Luoyang Lantian Chemical Technology Co., Ltd.
硬脂酸，SA1840型，杭州油脂化工有限公司生产。Stearic acid, type SA1840, produced by Hangzhou Oleochemical Co., Ltd.
聚乙烯蜡，WB42型，Struktol Company of America公司生产。Polyethylene wax, type WB42, manufactured by Struktol Company of America.
聚乙二醇，为聚乙二醇4000，即PEG4000，远东联石化(扬州)有限公司生产。Polyethylene glycol is polyethylene glycol 4000, namely PEG4000, produced by Far Eastern Petrochemical (Yangzhou) Co., Ltd.
氧化铬绿，SGC型，宜兴华谊一品着色科技有限公司生产。Chromium oxide green, SGC type, produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
铬黄，603H型，宜兴华谊一品着色科技有限公司生产。Chrome yellow, type 603H, produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
氧化铁红，S103型，宜兴华谊一品着色科技有限公司生产。Iron oxide red, type S103, produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
炭黑，N330型，济宁博拉碳材料有限公司生产。Carbon black, N330 type, produced by Jining Bora Carbon Materials Co., Ltd.
群青，U08型，宜兴华谊一品着色科技有限公司生产。Ultramarine, U08 type, produced by Yixing Huayi Yipin Coloring Technology Co., Ltd.
防老剂SPC，台州市黄岩东海化工有限公司生产。Anti-aging agent SPC, produced by Taizhou Huangyan Donghai Chemical Co., Ltd.
防老剂2246，台州市黄岩东海化工有限公司生产Anti-aging agent 2246, produced by Taizhou Huangyan Donghai Chemical Co., Ltd.
防老剂MB，BONDTEK CHEMICALS L.L.C公司生产。Anti-aging agent MB, produced by BONDTEK CHEMICALS L.L.C.
硫磺，安庆市鑫泉硫化剂厂生产的粉体硫磺。Sulfur, powder sulfur produced by Anqing Xinquan Vulcanizing Agent Factory.
二硫化二苯并噻唑，即硫化促进剂DM，SOVMER CHEMICAL CO.,LTD公司生产。Dibenzothiazole disulfide, namely vulcanization accelerator DM, is produced by SOVMER CHEMICAL CO., LTD.
N-环己基-2-苯并噻唑次磺酰胺，即硫化促进剂CZ，蔚林新材料科技股份生产。N-cyclohexyl-2-benzothiazole sulfenamide, namely vulcanization accelerator CZ, produced by Weilin New Material Technology Co., Ltd.
二硫化四甲基秋兰姆，即硫化促进剂TT，镇江振邦化工有限公司生产。Tetramethylthiuram disulfide, namely vulcanization accelerator TT, was produced by Zhenjiang Zhenbang Chemical Co., Ltd.
二丁基二硫代氨基甲酸锌，即硫化促进剂ZDBC-75，嘉兴北化高分子助剂有限公司生产。Zinc dibutyl dithiocarbamate, namely vulcanization accelerator ZDBC-75, produced by Jiaxing Beihua Polymer Additives Co., Ltd.
4，4’-二硫化二吗啉，即硫化促进剂DTDM-80，嘉兴北化高分子助剂有限公司生产。4,4'-Dimorpholine disulfide, namely vulcanization accelerator DTDM-80, produced by Jiaxing Beihua Polymer Additives Co., Ltd.
<实施例一><Example 1>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
100份NR-1#天然橡胶、25份白炭黑、1份硅烷偶联剂、10份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、1.5份PEG4000、5份钛白粉、2份铬黄、0.8份硫磺、1份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及1份二硫化四甲基秋兰姆。100 parts of NR-1# natural rubber, 25 parts of white carbon black, 1 part of silane coupling agent, 10 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax , 1 part WB215, 1.5 parts PEG4000, 5 parts titanium dioxide, 2 parts chrome yellow, 0.8 part sulfur, 1 part dibenzothiazole disulfide, 1 part N-cyclohexyl-2-benzothiazole sulfenamide and 1 part Tetramethylthiuram disulfide.
本实施例提供的地铁轨道交通用橡胶垫板组合物制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit provided by this embodiment is as follows:
步骤1，将100份NR-1#天然橡胶加入密炼机中，炼制7min后，加入1份硅烷偶联剂、10份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、1.5份PEG4000、5份钛白粉以及2份铬黄，密炼2min，加入16.7份白炭黑混炼5min，最后加入8.3份白炭黑，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 100 parts of NR-1# natural rubber into the internal mixer, and after refining for 7 minutes, add 1 part of silane coupling agent, 10 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of Anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome yellow, Banbury for 2 minutes, add 16.7 parts of white carbon black and mix for 5 minutes, finally add 8.3 parts of white carbon black, Mixing for 4 minutes, control the internal temperature of the mixer to be 100 °C, remove the glue through the lifting bolt, cool it, and park it for 10 hours to obtain the A-stage glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，调整辊距为1.0mm，加入0.8份硫磺、1份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及1份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；Step 2, add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, the roll distance is adjusted to 1.0 mm, 0.8 parts of sulfur, 1 part of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide and 1 part of tetramethylthiuram disulfide were rolled for 4 times, packaged for 4 times, and thinned for 5 times with a small roll distance, and the sheet was cooled and parked to obtain B segment glue;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板组合物。Step 4, put the rubber embryo into a corresponding mold, and vulcanize it to obtain a rubber backing plate composition for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，其中邵氏硬度的测试方法为GB/T 531.1-2008，拉伸强度的测试方法为GB/T 528-2009，拉断伸长率的测试方法为GB/T 528-2009，定伸应力的测试方法为GB/T 528-2009，静刚度的测试方法为按TB/T 3395.1-2015附录A进行。The performance test is carried out on the rubber backing plate composition for subway rail transit prepared in this example, wherein the test method for Shore hardness is GB/T 531.1-2008, the test method for tensile strength is GB/T 528-2009, and the tensile strength The test method for elongation is GB/T 528-2009, the test method for constant elongation stress is GB/T 528-2009, and the test method for static stiffness is according to Appendix A of TB/T 3395.1-2015.
测试结果如表1所示。The test results are shown in Table 1.
表1实施例一中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment 1 of table 1
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 49shore A49shore A
拉伸强度Tensile Strength 25.1MPa25.1MPa
拉断伸长率Elongation at break 540％540%
200％定伸应力200% tensile stress 3.1MPa3.1MPa
静刚度static stiffness 25kN/mm25kN/mm
实施例一的作用与效果The function and effect of the first embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为采用了NR-1#天然橡胶、白炭黑、硅烷偶联剂、氧化锌、硬脂酸、防老剂SPC、防老剂2246、微晶蜡、WB215、PEG4000、钛白粉、铬黄、硫磺、二硫化二苯并噻唑、N-环己基-2-苯并噻唑次磺酰胺以及二硫化四甲基秋兰姆为原料，所以本实施例提供的地铁轨道交通用橡胶垫板的邵氏硬度为49shoreA，拉伸强度为25.1MPa，拉断伸长率为540％，200％定伸应力为3.1MPa，静刚度为25kN/mm。According to the rubber backing plate composition for subway rail transit involved in this embodiment, NR-1# natural rubber, silica, silane coupling agent, zinc oxide, stearic acid, anti-aging agent SPC, and anti-aging agent 2246 are used. , microcrystalline wax, WB215, PEG4000, titanium dioxide, chrome yellow, sulfur, dibenzothiazole disulfide, N-cyclohexyl-2-benzothiazole sulfenamide and tetramethylthiuram disulfide as raw materials, so The shore hardness of the rubber backing plate for subway rail transit provided in this embodiment is 49 shoreA, the tensile strength is 25.1MPa, the elongation at break is 540%, the 200% tensile stress is 3.1MPa, and the static stiffness is 25kN/mm .
进一步地，因为本实施例中的轨道交通用橡胶垫板的静刚度为25kN/mm，所以与运行轴重为14t的地铁的地铁轨道弯道(曲线半径小于等于400m)外股处所需的轨道交通用橡胶垫板的静刚度相匹配，特别适合安装在地铁轨道曲线半径小于等于400m的弯道外股处。Further, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 25kN/mm, it is necessary for the outer strand of the subway track curve (curve radius less than or equal to 400m) of the subway with a running axle load of 14t. The static stiffness of the rubber pad for rail transit is matched, and it is especially suitable for installation at the outer strand of the curve of the subway track whose radius is less than or equal to 400m.
进一步地，本实施例所涉及的地铁轨道交通用橡胶垫板组合物的制造方法，因为在步骤一中进行了冷却停放10h的操作，所以这不仅能在后续的步骤中保证A段胶的收缩稳定剂，还能让各个助剂与基体橡胶支架充分浸润融合，从而能够提升地铁轨道交通用橡胶垫板的机械强度。Further, in the manufacturing method of the rubber backing plate composition for subway rail transit involved in this embodiment, because the operation of cooling and parking for 10 hours is carried out in step 1, this can not only ensure the shrinkage of the A-section glue in the subsequent steps. The stabilizer can also fully infiltrate and fuse the various additives with the base rubber bracket, thereby improving the mechanical strength of the rubber pad for subway rail transit.
进一步地，本实施例所涉及的地铁轨道交通用橡胶垫板组合物的制造方法，因为在步骤二中进行了小辊距薄通5次，出片冷却停放的操作，所以这不仅能够使得粉料在A段胶中能够充分地分散融合，还能避免加工温度过高引发的焦烧。Further, in the manufacturing method of the rubber backing plate composition for subway rail transit involved in the present embodiment, because in step 2, the operations of thin rolling with a small roll pitch 5 times, and sheet cooling and parking are performed, so this can not only make the powder The material can be fully dispersed and fused in the A-stage rubber, and it can also avoid scorch caused by excessive processing temperature.
<实施例二><Example 2>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
100份NR-1#天然橡胶、25份白炭黑、1份硅烷偶联剂、30份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、1.5份PEG4000、5份钛白粉、0.3份炭黑、0.8份硫磺、1份二硫化二苯并噻唑、2份N-环己基-2-苯并噻唑次磺酰胺以及2份二硫化四甲基秋兰姆。100 parts of NR-1# natural rubber, 25 parts of white carbon black, 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax , 1 part WB215, 1.5 parts PEG4000, 5 parts titanium dioxide, 0.3 part carbon black, 0.8 part sulfur, 1 part dibenzothiazole disulfide, 2 parts N-cyclohexyl-2-benzothiazole sulfenamide and 2 parts Tetramethylthiuram disulfide.
本实施例提供的地铁轨道交通用橡胶垫板组合物制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit provided by this embodiment is as follows:
步骤1，将100份NR-1#天然橡胶加入密炼机中，炼制7min后，加入1份硅烷偶联剂、30份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、1.5份PEG4000、5份钛白粉以及0.3份炭黑，密炼2min，加入16.7份白炭黑混炼5min，最后加入8.3份白炭黑，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 1 part of silane coupling agent, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of Anti-aging agent 2246, 2 parts of microcrystalline wax, 1 part of WB215, 1.5 parts of PEG4000, 5 parts of titanium dioxide and 0.3 parts of carbon black, Banbury for 2 minutes, add 16.7 parts of white carbon black and mix for 5 minutes, and finally add 8.3 parts of white carbon black, Mixing for 4 minutes, control the internal temperature of the mixer to be 100 °C, remove the glue through the lifting bolt, cool it, and park it for 10 hours to obtain the A-stage glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，调整辊距为1.0mm，加入0.8份硫磺、1份二硫化二苯并噻唑、2份N-环己基-2-苯并噻唑次磺酰胺以及2份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；Step 2, add the A-stage material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, the roll distance is adjusted to 1.0 mm, 0.8 parts of sulfur, 1 part of dibenzothiazole disulfide, 2 parts of N-Cyclohexyl-2-benzothiazole sulfenamide and 2 parts of tetramethylthiuram disulfide were rolled 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain B segment glue;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板组合物。Step 4, put the rubber embryo into a corresponding mold, and vulcanize it to obtain a rubber backing plate composition for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板进行性能测试，测试方法与实施例一中相同。The performance test of the rubber pad for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表2所示。The test results are shown in Table 2.
表2实施例二中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the second embodiment of table 2
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 59shore A59shore A
拉伸强度Tensile Strength 17.2MPa17.2MPa
拉断伸长率Elongation at break 352％352%
200％定伸应力200% tensile stress 6.4MPa6.4MPa
静刚度static stiffness 30kN/mm30kN/mm
实施例二的作用与效果The function and effect of the second embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为30kN/mm，与运行轴重为14t的地铁的地铁轨道弯道(曲线半径大于400m)处所需的轨道交通用橡胶垫板的静刚度相匹配，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在地铁轨道曲线半径大于400m的弯道处的橡胶垫板。According to the rubber pad composition for subway rail transit involved in this embodiment, because the static stiffness of the rubber pad for rail transit in this embodiment is 30kN/mm, it is different from the subway track curve ( The static stiffness of the rubber pad for rail transit needs to be matched when the curve radius is greater than 400m), so the composition of the rubber pad for subway rail transit in this embodiment is particularly suitable for manufacturing and installing on the subway track with a curve radius greater than 400m. Rubber pads in corners.
进一步地，因为与实施例一相比在使用了相同成分及用量的填充剂的情况下，额外增加了20重量份的氧化锌，所以本实施例提供的地铁轨道交通用橡胶垫板组合物相对于实施例一中的地铁轨道交通用橡胶垫板组合物不仅邵氏硬度得到了意外地提升，而且200％定伸拉力也得到了显著的提高。Further, because 20 parts by weight of zinc oxide is additionally added compared with Example 1 when the filler of the same composition and amount is used, the rubber backing plate composition for subway rail transit provided in this example is relatively Not only the Shore hardness of the rubber backing plate composition for subway rail transit in Example 1 is unexpectedly improved, but also the 200% tensile strength at constant elongation is also significantly improved.
<实施例三><Example 3>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
100份NR-1#天然橡胶、50份白炭黑、25份碳酸钙、2份硅烷偶联剂、2份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂SPC、1份防老剂2246、3.5份微晶蜡、1份WB215、3.5份PEG4000、5份钛白粉、2份氧化铬绿、2.3份硫磺、1.5份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及0.3份二硫化四甲基秋兰姆。100 parts NR-1# natural rubber, 50 parts white carbon black, 25 parts calcium carbonate, 2 parts silane coupling agent, 2 parts paraffin oil, 5 parts zinc oxide, 1.5 parts stearic acid, 1 part antioxidant SPC, 1 part Parts of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chromium oxide green, 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl- 2-benzothiazole sulfenamide and 0.3 part of tetramethylthiuram disulfide.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将100份NR-1#天然橡胶加入密炼机中，炼制7min后，加入2份硅烷偶联剂、2份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂SPC、1份防老剂2246、3.5份微晶蜡、1份WB215、3.5份PEG4000、5份钛白粉以及2份氧化铬绿，密炼2min，加入33.3份白炭黑、16.7份碳酸钙混炼5min，最后加入16.7份白炭黑、8.3份碳酸钙，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging Agent SPC, 1 part of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome oxide green, Banbury for 2 minutes, add 33.3 parts of white carbon black, 16.7 parts of calcium carbonate to mix Knead for 5 minutes, finally add 16.7 parts of white carbon black and 8.3 parts of calcium carbonate, mix for 4 minutes, control the internal temperature of the mixer to 100 ° C, lift the plug to discharge the glue, cool, and park for 10 hours to obtain the A-stage rubber;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入2.3份硫磺、1.5份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及0.3份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；In step 2, the A-stage material is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2- Benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4: Put the rubber embryo into the corresponding mold and vulcanize it to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，测试方法与实施例一中相同。The performance test of the rubber backing plate composition for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表3所示。The test results are shown in Table 3.
表3实施例三中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment three of table 3
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 69shore A69shore A
拉伸强度Tensile Strength 20.9MPa20.9MPa
拉断伸长率Elongation at break 480％480%
200％定伸应力200% tensile stress 6.0MPa6.0MPa
静刚度static stiffness 35kN/mm35kN/mm
实施例三的作用与效果The role and effect of the third embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为35kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在运行轴重为14t地铁的地铁轨道曲线半径小于等于400m的弯道内股处的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 35kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 35 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the inner strand of the curve of the subway track with a running axle load of 14t and the curve radius is less than or equal to 400m.
进一步地，因为本实施例中的地铁轨道交通用橡胶垫板组合物使用了由50份白炭黑、25份碳酸钙组成的填充剂，所以，本实施例提供的地铁轨道交通用橡胶垫板组合物的邵氏硬度相对于实施例一和二中的地铁轨道交通用橡胶垫板组合物得到了进一步的提升。Further, because the rubber backing plate composition for subway rail transit in this embodiment uses a filler composed of 50 parts of white carbon black and 25 parts of calcium carbonate, the rubber backing plate for subway rail transit provided by this embodiment is The Shore hardness of the composition is further improved compared to the rubber backing plate composition for subway rail transit in Examples 1 and 2.
进一步地，由于本实施例中采用了2.3份硫磺、1.5份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及0.3份二硫化四甲基秋兰姆组成硫化体系，所以本实施例中的地铁轨道交通用橡胶垫板组合物能够在保有高硬度的情况下，依然具有良好的拉伸强度、拉断伸长率以及200％定伸应力等力学性能。Further, since 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide are used in this embodiment vulcanization system, so the rubber backing plate composition for subway rail transit in this embodiment can still have good mechanical properties such as tensile strength, elongation at break and 200% tensile stress while maintaining high hardness.
<实施例四><Example 4>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
100份NR-1#天然橡胶、50份白炭黑、25份碳酸钙、2份硅烷偶联剂、2份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂SPC、1份防老剂2246、3.5份微晶蜡、1份WB215、3.5份PEG4000、5份钛白粉、2份铬黄、2.3份硫磺、1.5份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及0.3份二硫化四甲基秋兰姆。100 parts NR-1# natural rubber, 50 parts white carbon black, 25 parts calcium carbonate, 2 parts silane coupling agent, 2 parts paraffin oil, 5 parts zinc oxide, 1.5 parts stearic acid, 1 part antioxidant SPC, 1 part Parts of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide, 2 parts of chrome yellow, 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2 - benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将100份NR-1#天然橡胶加入密炼机中，炼制7min后，加入2份硅烷偶联剂、2份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂SPC、1份防老剂2246、3.5份微晶蜡、1份WB215、3.5份PEG4000、5份钛白粉以及2份铬黄，密炼2min，加入33.3份白炭黑、16.7份碳酸钙混炼5min，最后加入16.7份白炭黑、8.3份碳酸钙，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 100 parts of NR-1# natural rubber into the mixer, after refining for 7 minutes, add 2 parts of silane coupling agent, 2 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of anti-aging Agent SPC, 1 part of antioxidant 2246, 3.5 parts of microcrystalline wax, 1 part of WB215, 3.5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of chrome yellow, Banbury for 2 minutes, add 33.3 parts of white carbon black, 16.7 parts of calcium carbonate and mix 5min, finally add 16.7 parts of white carbon black and 8.3 parts of calcium carbonate, mix for 4min, control the internal temperature of the mixer to 100 ℃, lift the plug to discharge the glue, cool it, and park it for 10h to obtain the A-stage glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入2.3份硫磺、1.5份二硫化二苯并噻唑、1份N-环己基-2-苯并噻唑次磺酰胺以及0.3份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；In step 2, the A-stage material is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 2.3 parts of sulfur, 1.5 parts of dibenzothiazole disulfide, 1 part of N-cyclohexyl-2- Benzothiazole sulfenamide and 0.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，测试方法与实施例一中相同。The performance test of the rubber backing plate composition for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表4所示。The test results are shown in Table 4.
表4实施例四中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment four of table 4
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 70shore A70shore A
拉伸强度Tensile Strength 19.8MPa19.8MPa
拉断伸长率Elongation at break 465％465%
200％定伸应力200% tensile stress 6.5MPa6.5MPa
静刚度static stiffness 40kN/mm40kN/mm
实施例四的作用与效果The function and effect of the fourth embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用 橡胶垫板静刚度为40kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在运行轴重为16t地铁的地铁轨道曲线半径小于等于400m的弯道外股处的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 40 kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 40 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the outer strand of the curve radius of the subway track with a running axle load of 16t or less than 400m.
<实施例五><Example 5>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
100份NR-1#天然橡胶、60份白炭黑、5份碳酸钙、30份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、5份PEG4000、5份钛白粉、2份群青、0.8份硫磺、1.3份二硫化二苯并噻唑、2.5份N-环己基-2-苯并噻唑次磺酰胺以及1.3份二硫化四甲基秋兰姆。100 parts NR-1# natural rubber, 60 parts white carbon black, 5 parts calcium carbonate, 30 parts zinc oxide, 1.5 parts stearic acid, 1.5 parts antioxidant SPC, 1 part antioxidant 2246, 2 parts microcrystalline wax, 1 part Parts WB215, 5 parts PEG4000, 5 parts titanium dioxide, 2 parts ultramarine, 0.8 parts sulfur, 1.3 parts dibenzothiazole disulfide, 2.5 parts N-cyclohexyl-2-benzothiazole sulfenamide, and 1.3 parts tetrakis disulfide Methylthiuram.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将100份NR-1#天然橡胶、60份白炭黑、5份碳酸钙、5份钛白粉、30份氧化锌、1.5份硬脂酸、1.5份防老剂SPC、1份防老剂2246、2份微晶蜡、1份WB215、5份PEG4000、5份钛白粉以及2份群青，密炼2min，加入40份白炭黑、3.3份碳酸钙混炼5min，最后加入20份白炭黑、1.7份碳酸钙，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, 100 parts of NR-1# natural rubber, 60 parts of white carbon black, 5 parts of calcium carbonate, 5 parts of titanium dioxide, 30 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant SPC, 1 part of antioxidant 2246, 2 parts of microcrystalline wax, 1 part of WB215, 5 parts of PEG4000, 5 parts of titanium dioxide and 2 parts of ultramarine blue, Banbury for 2 minutes, add 40 parts of white carbon black, 3.3 parts of calcium carbonate and mix for 5 minutes, and finally add 20 parts of white carbon Black, 1.7 parts of calcium carbonate, mix for 4 minutes, control the internal temperature of the internal mixer to 100 ° C, lift the plug to remove the glue, cool, and park for 10 hours to obtain the A-stage rubber;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入0.8份硫磺、1.3份二硫化二苯并噻唑、2.5份N-环己基-2-苯并噻唑次磺酰胺以及1.3份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；In step 2, the material of section A is added to the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.8 parts of sulfur, 1.3 parts of dibenzothiazole disulfide, 2.5 parts of N-cyclohexyl-2- Benzothiazole sulfenamide and 1.3 parts of tetramethylthiuram disulfide were smelted 4 times, packaged 4 times, and thinly passed 5 times with a small roll distance, and then the sheet was cooled and parked to obtain the B-segment rubber;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，测试方法与实施例一中相同。The performance test of the rubber backing plate composition for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表5所示。The test results are shown in Table 5.
表5实施例五中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment 5 of table 5
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 80shore A80shore A
拉伸强度Tensile Strength 18.9MPa18.9MPa
拉断伸长率Elongation at break 302％302%
200％定伸应力200% tensile stress 11.9MPa11.9MPa
静刚度static stiffness 110kN/mm110kN/mm
实施例五的作用与效果The function and effect of the fifth embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为110kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在重载铁路的直线轨道处的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 110 kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 110 kN/mm. The material is particularly suitable for the manufacture of rubber pads installed on the linear tracks of heavy-duty railways.
进一步地，因为本实施例地铁轨道交通用橡胶垫板组合物采用了60份白炭黑、5份碳酸钙作为填充剂，所以相对于实施例三中的地铁轨道交通用橡胶垫板组合物，在填充剂总量减少的情况下，依然使得邵氏硬度得到了有效提升。Further, because 60 parts of white carbon black and 5 parts of calcium carbonate are used as fillers in the rubber backing plate composition for subway rail transit in this embodiment, compared to the rubber backing plate composition for subway rail transit in Example 3, In the case of reducing the total amount of filler, the Shore hardness is still effectively improved.
进一步地，本实施例地铁轨道交通用橡胶垫板组合物采用了由0.8份硫磺、1.3份二硫化二苯并噻唑、2.5份N-环己基-2-苯并噻唑次磺酰胺以及1.3份二硫化四甲基秋兰姆组成硫化体系，所以相对于实施例一到三中的地铁轨道交通用橡胶垫板组合物200％定伸拉力得到了大幅提升。Further, the rubber backing plate composition for subway rail transit in the present embodiment adopts 0.8 parts of sulfur, 1.3 parts of dibenzothiazole disulfide, 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide and 1.3 parts of dibenzothiazole disulfide. The vulcanized tetramethylthiuram constitutes a vulcanization system, so the 200% constant tensile force of the rubber backing plate composition for subway rail transit in Examples 1 to 3 is greatly improved.
<实施例六><Example 6>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶、40份白炭黑、22份碳酸钙、2份硅烷偶联剂、12份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉、1.5份氧化铬绿、0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、1.3份4，4’-二硫化二吗啉、0.5份二硫化四甲基秋兰姆。30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber, 40 parts of silica, 22 parts of calcium carbonate, 2 parts of silane coupling agent, 12 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearin Acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of chrome oxide green, 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, 1.3 parts of zinc dibutyldithiocarbamate, 1.3 parts of 4,4'-dimorpholine disulfide, 0.5 parts of tetramethylthiuram disulfide.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶加入密炼机中，炼制7min后，加入2份硅烷偶联剂、12份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉以及1.5份氧化铬绿，密炼2min，加入26.7份白炭黑、14.7份碳酸钙混炼5min，最后加入13.3份白炭黑、7.3份碳酸钙以及12份石蜡油，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 12 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Chromium oxide green, mix for 2min, add 26.7 parts of white carbon black, 14.7 parts of calcium carbonate and mix for 5min, finally add 13.3 parts of silica, 7.3 parts of calcium carbonate and 12 parts of paraffin oil, mix for 4min, control the internal mixer The temperature is 100 °C, the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A-section glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、1.3份4，4’-二硫化二吗啉、0.5份二硫化四甲基秋兰姆，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；Step 2, adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added. Zinc formate, 1.3 parts of 4,4'-dimorpholine disulfide, 0.5 part of tetramethylthiuram disulfide, smelted 4 times, packaged 4 times, thinly passed 5 times with a small roll distance, and then cooled and parked. Get B segment glue;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，测试方法与实施例一中相同。The performance test of the rubber backing plate composition for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表6所示。The test results are shown in Table 6.
表6实施例六中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment 6 of table 6
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 70shore A70shore A
拉伸强度Tensile Strength 15.5MPa15.5MPa
拉断伸长率Elongation at break 475％475%
200％定伸应力200% tensile stress 4.6MPa4.6MPa
静刚度static stiffness 35kN/mm35kN/mm
实施例六的作用与效果The function and effect of the sixth embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为35kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在运行轴重为14t的地铁的地铁轨道弯道处(曲线内股，曲线半径小于等于400m)的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 35kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 35 kN/mm. It is especially suitable for the manufacture of rubber pads installed at the bends of the subway tracks (the inner strand of the curve, the radius of the curve is less than or equal to 400m) of the subway with a running axle load of 14t.
根据本实施例所涉及的地铁轨道交通用橡胶垫板，因为使用了三元乙丙橡胶来代替天然橡胶作为基体材料，所以本实施例相对于实施例一到五中的橡胶垫板组合物，更能够承受较大范围的温度变化，具有更好的耐候性。According to the rubber pad for subway rail transit involved in this embodiment, because EPDM rubber is used as the base material instead of natural rubber, the rubber pad composition in this embodiment is It is more able to withstand a wider range of temperature changes and has better weather resistance.
<实施例七><Embodiment 7>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶、45份白炭黑、25份碳酸钙、2份硅烷偶联剂、8份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉、1.5份铬黄、0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、0.5份二硫化四甲基秋兰姆以及1.3份4，4’-二硫化二吗啉。30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber, 45 parts of silica, 25 parts of calcium carbonate, 2 parts of silane coupling agent, 8 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearin Acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of chrome yellow, 0.5 parts of parts sulfur, 2 parts dibenzothiazole disulfide, 1.3 parts zinc dibutyldithiocarbamate, 0.5 parts tetramethylthiuram disulfide, and 1.3 parts 4,4'-dimorpholine disulfide.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶加入密炼机中，炼制7min后，加入2份硅烷偶联剂、8份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉以及1.5份铬黄，密炼2min，加入30份白炭黑、16.7份碳酸钙混炼5min，最后加入15份白炭黑、8.3份碳酸钙以及8份石蜡油，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 8 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Chrome yellow, banbury for 2 minutes, add 30 parts of white carbon black, 16.7 parts of calcium carbonate and mix for 5 minutes, finally add 15 parts of white carbon black, 8.3 parts of calcium carbonate and 8 parts of paraffin oil, mix for 4 minutes, control the internal temperature of the internal mixer At 100 °C, the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A section of glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、、0.5份二硫化四甲基秋兰姆以及1.3份4，4’-二硫化二吗啉，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；Step 2, adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added. Zinc formate, 0.5 parts of tetramethylthiuram disulfide and 1.3 parts of 4,4'-dimorpholine disulfide, smelted 4 times, packed 4 times, thinly passed 5 times with a small roll distance, and then cooled and parked , get B segment glue;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板组合物进行性能测试，测试方法与实施例一中相同。The performance test of the rubber backing plate composition for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表7所示。The test results are shown in Table 7.
表7实施例七中橡胶垫板组合物的测试结果The test result of the rubber backing plate composition in the embodiment 7 of table 7
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 75shore A75shore A
拉伸强度Tensile Strength 17.7MPa17.7MPa
拉断伸长率Elongation at break 431％431%
200％定伸应力200% tensile stress 5.4MPa5.4MPa
静刚度static stiffness 40kN/mm40kN/mm
实施例七的作用与效果The role and effect of the seventh embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为40kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在运行轴重为16t地铁的地铁轨道曲线半径小于等于400m的弯道外股处的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 40 kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 40 kN/mm. It is especially suitable for manufacturing the rubber backing plate installed at the outer strand of the curve radius of the subway track with a running axle load of 16t or less than 400m.
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，在与实施例六中的地铁轨道交通用橡胶垫板组合物大致相似的情况下，减少了增塑剂石蜡油的用量，反而使得本实施例中的地铁轨道交通用橡胶垫板组合物拉伸强度以及200％定伸拉力得到了意外地提升。According to the rubber backing plate composition for subway rail transit involved in this embodiment, under the situation that is roughly similar to the rubber backing plate composition for subway rail transit in Example 6, the amount of plasticizer paraffin oil is reduced, but the amount of plasticizer paraffin oil is reduced. As a result, the tensile strength and 200% tensile strength of the rubber backing plate composition for subway rail transit in this embodiment are unexpectedly improved.
<实施例八><Example 8>
一种地铁轨道交通用橡胶垫板组合物，其由下述按重量份计的原料制备而成：A rubber backing plate composition for subway rail transit, which is prepared from the following raw materials in parts by weight:
30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶、55份白炭黑、20份碳酸钙、2份硅烷偶联剂、9份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉、 1.5份氧化铁红、0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、0.5份二硫化四甲基秋兰姆以及1.3份4，4’-二硫化二吗啉。30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber, 55 parts of silica, 20 parts of calcium carbonate, 2 parts of silane coupling agent, 9 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts of stearin Acid, 1 part of antioxidant MB, 0.6 part of antioxidant 2246, 2 parts of microcrystalline wax, 2 parts of polyethylene wax WB42, 3 parts of PEG4000, 3 parts of petroleum resin TL-100, 3 parts of titanium dioxide, 1.5 parts of iron oxide red, 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, 1.3 parts of zinc dibutyldithiocarbamate, 0.5 parts of tetramethylthiuram disulfide, and 1.3 parts of 4,4'-dimorpholine disulfide.
本实施例中地铁轨道交通用橡胶垫板组合物的制备方法如下：The preparation method of the rubber backing plate composition for subway rail transit in the present embodiment is as follows:
步骤1，将30份4045M三元乙丙橡胶、70份3092PM三元乙丙橡胶加入密炼机中，炼制7min后，加入2份硅烷偶联剂、9份石蜡油、5份氧化锌、1.5份硬脂酸、1份防老剂MB、0.6份防老剂2246、2份微晶蜡、2份聚乙烯蜡WB42、3份PEG4000、3份石油树脂TL-100、3份钛白粉以及1.5份氧化铁红，密炼2min，加入36.7份白炭黑、13.3份碳酸钙混炼5min，最后加入18.3份白炭黑、6.7份碳酸钙以及9份石蜡油涂覆，混炼4min，控制密炼机内部温度为100℃，通升栓排胶，冷却，停放10h，得A段胶；Step 1, add 30 parts of 4045M EPDM rubber, 70 parts of 3092PM EPDM rubber into the internal mixer, after refining for 7min, add 2 parts of silane coupling agent, 9 parts of paraffin oil, 5 parts of zinc oxide, 1.5 parts stearic acid, 1 part antioxidant MB, 0.6 part antioxidant 2246, 2 parts microcrystalline wax, 2 parts polyethylene wax WB42, 3 parts PEG4000, 3 parts petroleum resin TL-100, 3 parts titanium dioxide and 1.5 parts Iron oxide red, Banbury for 2min, add 36.7 parts of silica, 13.3 parts of calcium carbonate and mix for 5min, finally add 18.3 parts of silica, 6.7 parts of calcium carbonate and 9 parts of paraffin oil for coating, mix for 4min, control Banbury The internal temperature of the machine is 100 ℃, and the glue is removed by the lifting bolt, cooled, and parked for 10 hours to obtain the A-section glue;
步骤2，将A段料加入开炼机中进行热炼，开炼机的滚筒温度控制在50℃，加入0.5份硫磺、2份二硫化二苯并噻唑、1.3份二丁基二硫代氨基甲酸锌、0.5份二硫化四甲基秋兰姆以及1.3份4，4’-二硫化二吗啉，翻炼4次，打包4次，小辊距薄通5次后，出片冷却停放，得B段胶；Step 2, adding the A-section material into the open mill for thermal refining, the drum temperature of the open mill is controlled at 50 ° C, and 0.5 parts of sulfur, 2 parts of dibenzothiazole disulfide, and 1.3 parts of dibutyl dithioamino are added. Zinc formate, 0.5 parts of tetramethylthiuram disulfide and 1.3 parts of 4,4'-dimorpholine disulfide, smelted 4 times, packaged 4 times, thinly passed 5 times with a small roll distance, and then cooled and parked. Get B segment glue;
步骤3，将B段胶按需求进行裁切，得胶胚；Step 3, cutting the B-segment glue as required to obtain a glue embryo;
步骤4，将胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into the corresponding mold and vulcanize it, so as to obtain the rubber backing plate for subway rail transit.
对本实施例制得的地铁轨道交通用橡胶垫板进行性能测试，测试方法与实施例一中相同。The performance test of the rubber pad for subway rail transit prepared in this example is carried out, and the test method is the same as that in Example 1.
测试结果如表8所示。The test results are shown in Table 8.
表8实施例八中橡胶垫板的测试结果The test result of the rubber backing plate in the eighth embodiment of table 8
测试内容Test content 测试结果Test Results
邵氏硬度Shore hardness 79shore A79shore A
拉伸强度Tensile Strength 17.3MPa17.3MPa
拉断伸长率Elongation at break 352％352%
200％定伸应力200% tensile stress 6.8MPa6.8MPa
静刚度static stiffness 50kN/mm50kN/mm
实施例八的作用与效果The role and effect of the eighth embodiment
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，因为本实施例中的轨道交通用橡胶垫板静刚度为50kN/mm，所以本实施例中的地铁轨道交通用橡胶垫板组合物特别适合用于制造安装在运行轴重为16t地铁的地铁轨道曲线半径大于400m的弯道处的橡胶垫板。According to the composition of the rubber backing plate for subway rail transit in this embodiment, because the static stiffness of the rubber backing plate for rail transit in this embodiment is 50 kN/mm, the rubber backing plate composition for subway rail transit in this embodiment is 50 kN/mm. It is especially suitable for the manufacture of rubber pads installed at the bends of the subway track with a running axle load of 16t and the curve radius greater than 400m.
根据本实施例所涉及的地铁轨道交通用橡胶垫板组合物，在与实施例五和六中的地铁轨道交通用橡胶垫板组合物大致相似的情况下，仅仅改变了增塑剂石蜡油以及填充剂的用量，反而使得本实施例中的地铁轨道交通用橡胶垫板组合物200％定伸拉力得到了意外地提升。According to the rubber backing plate composition for subway rail transit involved in this example, in the case of being substantially similar to the rubber backing sheet composition for subway rail transit in Examples 5 and 6, only the plasticizer paraffin oil and On the contrary, the amount of the filler makes the 200% constant tensile strength of the rubber backing plate composition for subway rail transit in this embodiment unexpectedly improved.
上述实施方式为本发明的优选案例，并不用来限制本发明的保护范围。The above embodiments are preferred cases of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (11)

  1. 一种地铁轨道交通用橡胶垫板用组合物，其特征在于，包括下述按重量份计的组分：A composition for a rubber backing plate for subway rail transit, characterized in that it comprises the following components by weight:
    100份基体橡胶、20-100份填充剂、0-5份硅烷偶联剂、5-35份活性剂、0-15份增塑剂、3-10份颜料、1-3份防老剂、3-15份功能助剂、0.3-2.5份硫化剂以及2-8份硫化促进剂。100 parts of base rubber, 20-100 parts of filler, 0-5 parts of silane coupling agent, 5-35 parts of active agent, 0-15 parts of plasticizer, 3-10 parts of pigment, 1-3 parts of anti-aging agent, 3 parts -15 parts of functional additives, 0.3-2.5 parts of vulcanizing agent and 2-8 parts of vulcanization accelerator.
  2. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于：The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述基体橡胶为天然橡胶、丁苯橡胶、顺丁橡胶、乙丙橡胶或氯丁橡胶中的任意一种或多种。Wherein, the base rubber is any one or more of natural rubber, styrene-butadiene rubber, cis-butadiene rubber, ethylene-propylene rubber or chloroprene rubber.
  3. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于：The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述填充剂为白炭黑和/或碳酸钙。Wherein, the filler is white carbon black and/or calcium carbonate.
  4. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于：The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述活性剂为氧化锌与硬脂酸组成的混合物。Wherein, the active agent is a mixture of zinc oxide and stearic acid.
  5. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于：The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述功能助剂为微晶蜡、WB215、WB42、聚乙二醇4000或石油树脂中的任意一种或多种。Wherein, the functional auxiliary agent is any one or more of microcrystalline wax, WB215, WB42, polyethylene glycol 4000 or petroleum resin.
  6. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于，The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述硫化促进剂为二硫化二苯并噻唑、N-环己基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆、二丁基二硫代氨基甲酸锌、4，4’-二硫化二吗啉、过氧化二异丙苯中的任意一种或多种。Wherein, the vulcanization accelerator is dibenzothiazole disulfide, N-cyclohexyl-2-benzothiazole sulfenamide, tetramethylthiuram disulfide, zinc dibutyldithiocarbamate, 4, Any one or more of 4'-dimorpholine disulfide and dicumyl peroxide.
  7. 根据权利要求1所述的地铁轨道交通用橡胶垫板用组合物，其特征在于，The composition for a rubber backing plate for subway rail transit according to claim 1, characterized in that:
    其中，所述颜料为钛白粉、氧化铬绿、铬黄、氧化铁红、炭黑或群青中的任意一种或多种。Wherein, the pigment is any one or more of titanium dioxide, chrome oxide green, chrome yellow, iron oxide red, carbon black or ultramarine blue.
  8. 一种地铁轨道交通用橡胶垫板，其特征在于，采用权利要求1～7中任一项所述的地铁轨道交通用橡胶垫板用组合物制成。A rubber backing plate for subway rail transit is characterized in that it is made of the composition for a rubber backing plate for subway rail transit according to any one of claims 1 to 7 .
  9. 根据权利要求8所述的地铁轨道交通用橡胶垫板，其特征在于，具有：The rubber pad for subway rail transit according to claim 8, characterized in that it has:
    板体；plate body;
    条分布突起部，设置在所述板体的一个表面上；以及a strip distribution protrusion provided on one surface of the plate body; and
    点分布突起部，与所述条分布突起部设置在同一个所述表面上，point distribution protrusions provided on the same surface as the strip distribution protrusions,
    其中，所述条分布突起部与所述点分布突起部邻接形成，Wherein, the strip distribution protrusions are formed adjacent to the point distribution protrusions,
    所述板体与所述条分布突起部以及所述点分布突起部一体形成。The plate body is integrally formed with the strip distribution protrusions and the dot distribution protrusions.
  10. 根据权利要求8所述的地铁轨道交通用橡胶垫板，其特征在于，具有：The rubber pad for subway rail transit according to claim 8, characterized in that it has:
    板体；以及body; and
    突起部，设置在所述板体的一个表面上，a protrusion is provided on one surface of the plate body,
    其中，所述突起部包括多组突起部件，Wherein, the protruding part includes a plurality of sets of protruding parts,
    多组突起部件从所述板体的一个边缘分布至与所述一个边缘相对的另一个边缘，A plurality of groups of protruding parts are distributed from one edge of the plate body to another edge opposite to the one edge,
    所述多组突起部件的宽度从所述一个边缘朝所述另一个边缘逐渐减小。The widths of the plurality of sets of protruding parts gradually decrease from the one edge toward the other edge.
  11. 一种地铁轨道交通用橡胶垫板的制备方法，其特征在于，包括如下步骤：A preparation method of a rubber backing plate for subway rail transit, characterized in that it comprises the following steps:
    步骤1，将基体橡胶加入密炼机中，炼制5min-8min后，加入活性剂、防老剂、功能助剂、硅烷偶联剂、颜料，密炼1min-2min，加入占总填充剂重量30％-40％的填充剂混炼3min-8min，最后加入剩余的填充剂以及增塑剂，混炼3min-5min，控制密炼机内部温度为95℃-125℃，通升栓排胶，冷却，停放8h-24h，得A段胶；Step 1, add the base rubber into the internal mixer, after refining for 5min-8min, add active agent, anti-aging agent, functional additives, silane coupling agent, pigment, banbury for 1min-2min, add 30% of the total filler weight. %-40% of the fillers are mixed for 3min-8min, finally add the remaining fillers and plasticizers, mix for 3min-5min, control the internal temperature of the mixer to be 95°C-125°C, lift the plug to remove the glue, cool , park for 8h-24h, get A segment glue;
    步骤2，将所述A段料加入开炼机中进行热炼，所述开炼机的滚筒温度控制在40℃～55℃，加入硫化剂以及硫化促进剂，翻炼，打包，小辊距薄通后，出片冷却停放，得B段胶；Step 2, adding the A-section material into an open mill for thermal refining, the drum temperature of the open mill is controlled at 40 ° C to 55 ° C, adding a vulcanizing agent and a vulcanization accelerator, turning and refining, packing, and a small roll distance. After the thin pass, the film is cooled and parked to obtain the B-segment glue;
    步骤3，将所述B段胶按需求进行裁切，得胶胚；Step 3, the B segment glue is cut as required to obtain a glue embryo;
    步骤4，将所述胶胚放入对应的模具中，进行硫化，即得地铁轨道交通用橡胶垫板。Step 4, put the rubber embryo into a corresponding mold and vulcanize it to obtain a rubber backing plate for subway rail transit.
PCT/CN2021/118801 2021-02-10 2021-09-16 Rubber backing plate for subway rail transit, composition thereof, and preparation method therefor WO2022170762A1 (en)

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CN113004582B (en) * 2021-02-10 2022-10-28 浙江天铁实业股份有限公司 Rubber base plate for rail transit, preparation method and rail transit road section
CN113583314A (en) * 2021-08-13 2021-11-02 马金福 Industrial turnout rubber base plate used under railway turnout and preparation method and application thereof
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