CN102775652A - Thermoplastic elastomer micropore foaming material and preparation method thereof - Google Patents
Thermoplastic elastomer micropore foaming material and preparation method thereof Download PDFInfo
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- CN102775652A CN102775652A CN2012102927696A CN201210292769A CN102775652A CN 102775652 A CN102775652 A CN 102775652A CN 2012102927696 A CN2012102927696 A CN 2012102927696A CN 201210292769 A CN201210292769 A CN 201210292769A CN 102775652 A CN102775652 A CN 102775652A
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 229920002725 thermoplastic elastomer Polymers 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000005187 foaming Methods 0.000 title abstract description 10
- 229920001971 elastomer Polymers 0.000 claims abstract description 51
- 239000005060 rubber Substances 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000006261 foam material Substances 0.000 claims description 32
- 239000004604 Blowing Agent Substances 0.000 claims description 23
- 239000012141 concentrate Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 12
- 239000008188 pellet Substances 0.000 claims description 12
- 230000001737 promoting effect Effects 0.000 claims description 12
- 238000004073 vulcanization Methods 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 claims description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 229920013649 Paracril Polymers 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 2
- 229920005549 butyl rubber Polymers 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims description 2
- 239000002674 ointment Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 2
- 239000004088 foaming agent Substances 0.000 abstract 5
- 229920006342 thermoplastic vulcanizate Polymers 0.000 abstract 4
- 239000004594 Masterbatch (MB) Substances 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000004902 Softening Agent Substances 0.000 abstract 1
- 239000013543 active substance Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000012467 final product Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 206010000269 abscess Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a thermoplastic elastomer micropore foaming material and a preparation method thereof. The material comprises the following componnets in parts by weight: 70-95 parts of thermoplastic elastomer and 5-30 parts of foaming agent master batch. The preparation method comprises the following steps of: based on weight parts, placing 50-90 parts of compatibilizers, 6-30 parts of foaming agent and 4-20 parts of auxiliary foaming agents into a double-roller open mill for mixing to prepare foaming agent master batch; sequentially adding 100 parts of matrix rubber, 5-10 parts of active agent, 20-100 parts of reinforced fillers, 0-20 parts of softening agents, 0.5-5 parts of vulcanizing agents and 1-10 parts of accelerating agents into the open mill or an internal mixer for uniformly mixing to prepare a rubber compound; chopping the rubber compound and uniformly mixing the chopped rubber compound with 10-70 parts of plastics by a high-speed mixer; and extruding and pelleting the mixture to prepare thermoplastic vulcanizate (TPV) aggregates; and uniformly mixing the foaming agent master batch with the TPV aggregates to extrude and form again to prepare a high-performance micropore foaming material for vibration attenuation. The TPV foaming material is high in physical and mechanical properties and thermal ageing performance, is simple in process, can be widely popularized, and is suitable for being used in the field of rail transit.
Description
Technical field:
The present invention relates to a kind of thermoplastic elastomer microcellular foam material and preparation method thereof; Be particularly related to a kind of high-performance dynamic vulcanization thermoplastic elastomer (TPV) microcellular foam material and preparation method thereof, this material can be used as the elastic damping material, is mainly used in field of track traffic.
Background technology:
Thermoplastic sulfurized rubber (TPV) is with the fastest developing speed in the thermoplastic elastomer; Use maximum one type; It is scattered in the thermoplastic resin by the rubber of complete cure and forms; Have the elastomeric property of traditional rubber and the thermoplastic processability of resin concurrently, available conventional plastic processing units and working method.That TPV has is wide in variety, performance is wide, heat resisting temperature is high, ageing-resistant performance is excellent, permanent set at high temperature is little, excellent in dimensional stability.TPV can not only satisfy the needed performance requriements of people, and for save energy, simplify production technique, increase economic efficiency, reduce labour intensity, particularly also played actively and effective function for environment protection.The dynamic vulcanization process of TPV is actually rubber and plastic phase transition process; Before the vulcanization of rubber, rubber is as external phase, and plastics are dispersed among the rubber; And when dynamic vulcanization; Crosslinking reaction at first takes place in rubber, and crosslinked then rubber is fractured into molecule under high shear, is dispersed in thus in the external phase of molten plastic; Form so-called " sea-island " structure, this just make TPV have the simultaneously excellent processability of giving by resin external phase and snappiness of giving mutually by the vulcanized rubber microparticulate.
Foaming polymer material is meant by a large amount of gas dispersion in material and a family macromolecule material that forms, and has characteristics such as light weight, heat insulation, sound-absorbing, vibration damping, and dielectric properties are superior to matrix resin, has many uses.Microcellular foam material can be under the prerequisite of keeping the necessary mechanical property of material; Can significantly reduce the weight of goods; Thereby realize reducing raw material consumption and the purpose that reduces production costs; Simultaneously, the cell morphology that hole density is higher, the aperture is less also give a lot of unfoamed materials of microcellular foam material and traditional foam material incomparable excellent properties, as have high impulse strength, toughness and anti-fatigue life etc.At present cellular plastic foams with mipor rubber has had more research, and the TPV excellent performance is fit to be applied in field of track traffic, but to the also rare research in TPV foaming aspect, and the TPV foam material that is applied to field of track traffic still less.This patent will prepare the TPV material and combine with foam process, disposable preparation TPV foam material, and it is low to have a cost, and production efficiency is high, the characteristics of foaming TPV excellent material performance.
Summary of the invention:
The invention reside in provides a kind of a kind of high-performance dynamic vulcanization thermoplastic elastomer (TPV) of excellent combination property microcellular foam material; This material has the characteristics of environmental protection, production efficiency height, excellent performance, and another object of the present invention is to provide the preparation technology of above-mentioned TPV microcellular foam material.The present invention combines TPV material prepn process with the macromolecular material foaming process; Utilize the forcing machine shearing action with blowing agent concentrate and TPV homodisperse; Auxiliary with vulcanizer and promotor etc., at high temperature impel the rubber part sulfuration, and can realize control vulcanization rate and whipping agent decomposition rate through temperature and screw speed; Regulate abscess-size and expansion ratio; And utilize cross-head mouth molding pressure to reduce rapidly to realize foaming, and obtaining the foam material of the tiny homogeneous of abscess, this material has lower sound ratio of rigidity (the sound ratio of rigidity to the damping elastomer backing plate is controlled at below 1.5), ageing-resistant performance and physical and mechanical properties abroad.
The objective of the invention is to realize through following technical proposals:
A kind of high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material; This TPV microcellular foam material comprises counts 70-95 part thermoplastic elastomer and 5-30 part blowing agent concentrate two portions by weight, counts by weight in the thermoplastic elastomer: plastics 10-70 part
100 parts of base rubber
Vulcanizing agent 0.5-5 part
Promotor 1-10 part
Reinforced filling 20-100 part
Promoting agent 5-10 part
Tenderizer 0-20 part
Count by weight in the blowing agent concentrate: expanding material 50-90 part
Whipping agent 6-30 part
Blowing promotor 4-20 part
Rubber wherein is one or both or the two or more blends in tree elastomer, trans synthetic polyisoprene, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber, terpolymer EP rubber, paracril, butyl rubber, the X 050; Plastics are one or both or the two or more blends in Vilaterm, Vestolen PP 7052, polymeric amide, PS, styrene/acrylonitrile copolymer, third ethylene/propene nitrile/butadienecopolymer, the polycarbonate; Vulcanizing agent is Sulfur, Di Cumyl Peroxide 99 (DCP), Sulfur 0.5-1.5 part wherein, DCP2-5 part; Described promotor is TT, CZ, DM, TAIC; Wherein TT0.5-1.2 part, CZ0.5-1.5 part, DM0.5-1 part, TAIC1-4 part; Promoting agent is zinc oxide, Triple Pressed Stearic Acid; Wherein zinc oxide 4-6 part, Triple Pressed Stearic Acid 1-4 part, tenderizer is NO, aromatic hydrocarbon oil, Yellow Protopet 2A, DOP, DBP or ointment.
Reinforced filling is carbon black or WHITE CARBON BLACK or both mixtures, the carbon black of various kinds such as carbon black comprises N100 series, N200 is serial, N330 is serial, N400 is serial, N500 is serial, N600 is serial, N700 is serial, N800 is serial, N900 is serial, Sweet natural gas semi-reinforcing hydrocarbon black, Sweet natural gas thermally oxidized black and mixed gas carbon black and specification; WHITE CARBON BLACK comprises the precipitated silica or the thermal silica of various particle diameters;
Expanding material is an olefinic copolymer, optimal ethylene-octene copolymer POE or ethylene-vinyl acetate EVA; Blowing agent H or blowing agent AC or whipping agent OBSH;
Blowing promotor is a kind of in Zinic stearas, Triple Pressed Stearic Acid, zinc oxide, the urea.
Poromerics preparation of the present invention may further comprise the steps and processing condition:
Content in the book weighs each component materials as described above, then operation as follows:
1), expanding material is placed two roller mills (80-100 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 1-4 minute, mixing 3-8min makes blowing agent concentrate.
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined temperature successively is in the 30-60 ℃ of mill; Mixing 15-25min; Or join in the Banbury mixer 80-110 ℃ of temperature control, rotor speed 40-100r/min successively; Mixing 10-20min processes rubber unvulcanizate after material is uniformly dispersed.
3), the back being handled in the rubber unvulcanizate chopping mixes through high-speed mixer with plastics; And adopt the forcing machine extruding pelletization to prepare the TPV pellet, and wherein the temperature of forcing machine is successively: a district 110-160 ℃, and two district 120-160 ℃; Three district 130-180 ℃; Four district 140-220 ℃, five district 140-220 ℃, screw speed 30-150rpm.
4) the TPV pellet that makes with step 3) after the blowing agent concentrate that, step 1) is made is pulverized is behind the high-speed mixer uniform mixing; Join simultaneously in single screw rod or the twin screw extruder, the temperature of single screw extrusion machine once is: a district 110-160 ℃, and two district 120-160 ℃; Three district 130-180 ℃; Four district 140-220 ℃, five district 140-220 ℃, screw speed 30-150rpm; Wherein each section of twin screw extruder temperature is followed successively by: screw rod one district 110-160 ℃, screw rod two district 110-180 ℃, screw rod three district 120-190 ℃, four district 120-200 ℃, five district 120-210 ℃, six district 130-220 ℃; Seven district 140-220 ℃; Eight district 140-220 ℃, screw speed is set to 20-200rpm, preferred twin screw extruder; Adopt flat mouthful mould, be high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding the blend cooling and shaping.
Embodiment
Below in conjunction with instance the present invention is done further detailed explanation.
Table one is the formula table among each embodiment
Form design and claim do not meet, and are 30-90 part like the rubber umber, press form and then are 30-90 part for rubber, vulcanizing agent, promotor, reinforced filling, promoting agent, tenderizer mix the back
Table one Example formulations table
Embodiment 1
Choose the prescription one in the formula table, step is following:
1), expanding material is placed two roller mills (80 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 3 minutes, mixing 5min makes blowing agent concentrate.
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor are joined temperature successively is in 60 ℃ the mill, mixing 25min, being uniformly dispersed gets final product, and is prepared into rubber unvulcanizate.
3), the back handled in rubber unvulcanizate chopping mix through high-speed mixer with plastics, and adopt the forcing machine extruding pelletization to prepare the TPV pellet, wherein the temperature of forcing machine is successively: 140 ℃ in a district; 150 ℃ in two districts, 160 ℃ in three districts, 170 ℃ in four districts; 160 ℃ in five districts, screw speed 30rpm.
4) the TPV pellet that makes with step 3) after the blowing agent concentrate that, step 1) is made is pulverized is behind the high-speed mixer uniform mixing; Join simultaneously in the twin screw extruder, each section temperature is followed successively by: 110 ℃ in screw rod one district, 110 ℃ in screw rod two districts, 120 ℃ in screw rod three districts, 120 ℃ in four districts, 120 ℃ in five districts; 130 ℃ in six districts; 140 ℃ in seven districts, 140 ℃ in eight districts, screw speed is set to 20rpm; Forcing machine adopts flat mouthful of mould, is high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding the blend cooling and shaping.
Embodiment 2
Choose the prescription two in the formula table, step is following:
(1) expanding material is placed two roller mills (100 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 1 minute, mixing 3min makes blowing agent concentrate.
(2) rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor are joined in the Banbury mixer successively, 80 ℃ of temperature, rotor speed 100r/min, mixing about 10min, being uniformly dispersed gets final product, and is prepared into rubber unvulcanizate.
(3) back is handled in the rubber unvulcanizate chopping and mix with plastics, preparation TPV pellet behind the employing forcing machine extruding pelletization, wherein the temperature of forcing machine is successively: 140 ℃ in a district, 150 ℃ in two districts, 160 ℃ in three districts, 160 ℃ in four districts, 160 ℃ in five districts, screw speed 90rpm.
(4) thermoplastic sulfurized rubber and blowing agent concentrate are pulverized after high-speed mixer mixes, can be obtained the high-performance microcellular foam material through the twin screw extruder extrusioning shaping.Wherein extruder temperature is successively: 130 ℃ in a district, 130 ℃ in two districts, 140 ℃ in three districts, 150 ℃ in four districts, and 150 ℃ in five districts, 150 ℃ in six districts, 150 ℃ in seven districts, 155 ℃ in eight districts, screw speed is set to 120rpm.
Embodiment 3
Choose the prescription three in the formula table, step is following:
(1) expanding material is placed two roller mills (90 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 2 minutes, mixing 8min makes blowing agent concentrate.
(2) rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined temperature successively is in 60 ℃ the mill, mixing about 20min, and being uniformly dispersed gets final product, and is prepared into rubber unvulcanizate.
(3) back is handled in the rubber unvulcanizate chopping and mix with plastics, preparation TPV pellet behind the employing forcing machine extruding pelletization, wherein the temperature of forcing machine is successively: 110 ℃ in a district, 120 ℃ in two districts, 130 ℃ in three districts, 140 ℃ in four districts, 140 ℃ in five districts, screw speed 60rpm.
(4) thermoplastic sulfurized rubber and blowing agent concentrate are pulverized after high-speed mixer mixes, can be obtained the high-performance microcellular foam material through the twin screw extruder extrusioning shaping.Wherein extruder temperature is successively: 110 ℃ in a district, 110 ℃ in two districts, 120 ℃ in three districts, 120 ℃ in four districts, and 120 ℃ in five districts, 130 ℃ in six districts, 140 ℃ in seven districts, 140 ℃ in eight districts, screw speed is set to 200rpm.
Embodiment 4
Choose the prescription four in the formula table, step is following:
1), expanding material is placed two roller mills (100 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 2 minutes, mixing 4min makes blowing agent concentrate.
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor are joined temperature successively is in 60 ℃ of mills, mixing about 20min, being uniformly dispersed gets final product, and is prepared into rubber unvulcanizate.
3), the back handled in rubber unvulcanizate chopping mix through high-speed mixer with plastics, and adopt the forcing machine extruding pelletization to prepare the TPV pellet, wherein the temperature of forcing machine is successively: 170 ℃ in a district; 180 ℃ in two districts, 200 ℃ in three districts, 210 ℃ in four districts; 220 ℃ in five districts, screw speed 150rpm.
4) the TPV pellet that makes with step 3) after the blowing agent concentrate that, step 1) is made is pulverized is behind the high-speed mixer uniform mixing; Join simultaneously in the twin screw extruder, each section temperature is followed successively by: 140 ℃ in screw rod one district, 150 ℃ in screw rod two districts, 150 ℃ in screw rod three districts, 160 ℃ in four districts, 170 ℃ in five districts; 180 ℃ in six districts; 180 ℃ in seven districts, 180 ℃ in eight districts, screw speed is set to 120rpm; Forcing machine adopts flat mouthful of mould, is high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding the blend cooling and shaping.
Embodiment 5
Choose the prescription five in the formula table, step is following:
1), expanding material is placed two roller mills (90 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 2 minutes, mixing 5min makes blowing agent concentrate.
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor are joined temperature successively is in 50 ℃ of mills, mixing about 25min, being uniformly dispersed gets final product, and is prepared into rubber unvulcanizate.
3), the back handled in rubber unvulcanizate chopping mix through high-speed mixer with plastics, and adopt the single screw extrusion machine extruding pelletization to prepare the TPV pellet, wherein the temperature of forcing machine is successively: 120 ℃ in a district; 130 ℃ in two districts, 140 ℃ in three districts, 140 ℃ in four districts; 150 ℃ in five districts, screw speed 150rpm.
4), blowing agent concentrate that step 1) is made pulverizes TPV pellet that back and step 3) make behind the high-speed mixer uniform mixing, joins simultaneously in the single screw extrusion machine, each section temperature is followed successively by: 110 ℃ in a district; 120 ℃ in two districts, 130 ℃ in three districts, 140 ℃ in four districts; 140 ℃ in five districts; Screw speed 150rpm, forcing machine adopt flat mouthful of mould, are high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding the blend cooling and shaping.
Table two foaming material performance table
Can know that by above embodiment TPV foam material provided by the present invention has excellent physical and mechanical performance and heat aging performance, can extensively promote, and is fit to be applied to field of track traffic.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (10)
1. thermoplastic elastomer microcellular foam material and preparation method thereof; It is characterized in that described TPV microcellular foam material comprises counts 70-95 part thermoplastic elastomer and 5-30 part blowing agent concentrate two portions by weight, counts by weight in the thermoplastic elastomer: plastics 10-70 part
100 parts of base rubber
Vulcanizing agent 0.5-5 part
Promotor 1-10 part
Reinforced filling 20-100 part
Promoting agent 5-10 part
Tenderizer 0-20 part
Count by weight in the blowing agent concentrate: expanding material 50-90 part
Whipping agent 6-30 part
Blowing promotor 4-20 part.
2. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof is characterized in that described rubber is one or both or the two or more blends in tree elastomer, trans synthetic polyisoprene, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber, terpolymer EP rubber, paracril, butyl rubber, the X 050.
3. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof is characterized in that described plastics are one or both or the two or more blends in Vilaterm, Vestolen PP 7052, polymeric amide, PS, styrene/acrylonitrile copolymer, third ethylene/propene nitrile/butadienecopolymer, the polycarbonate.
4. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof is characterized in that said vulcanizing agent is Sulfur, Di Cumyl Peroxide 99 (DCP), Sulfur 0.5-1.5 part wherein, DCP2-5 part; Described promotor is TT, CZ, DM, TAIC; Wherein TT0.5-1.2 part, CZ0.5-1.5 part, DM0.5-1 part, TAIC1-4 part; Promoting agent is zinc oxide, Triple Pressed Stearic Acid; Wherein zinc oxide 4-6 part, Triple Pressed Stearic Acid 1-4 part, tenderizer is NO, aromatic hydrocarbon oil, Yellow Protopet 2A, DOP, DBP or ointment.
5. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof; It is characterized in that described reinforced filling is carbon black or WHITE CARBON BLACK or both mixtures, the carbon black of various kinds such as carbon black comprises N100 series, N200 is serial, N330 is serial, N400 is serial, N500 is serial, N600 is serial, N700 is serial, N800 is serial, N900 is serial, Sweet natural gas semi-reinforcing hydrocarbon black, Sweet natural gas thermally oxidized black and mixed gas carbon black and specification; WHITE CARBON BLACK comprises the precipitated silica or the thermal silica of particle diameter.
6. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof is characterized in that described expanding material is an olefinic copolymer.
7. according to described a kind of thermoplastic elastomer microcellular foam material of claim 1 and preparation method thereof, it is characterized in that described be blowing agent H or blowing agent AC or whipping agent OBSH.
8. according to described a kind of thermoplastic elastomer microcellular foam material of claim 1 and preparation method thereof, it is characterized in that described blowing promotor is a kind of in Zinic stearas, Triple Pressed Stearic Acid, zinc oxide, the urea.
9. according to described a kind of thermoplastic elastomer microcellular foam material of claim 6 and preparation method thereof, it is characterized in that described olefinic copolymer expanding material is ethylene-octene copolymer POE or ethylene-vinyl acetate EVA.
10. according to described a kind of thermoplastic elastomer microcellular foam material of claim 1 and preparation method thereof, it is characterized in that weighing each component materials, then operation as follows by claim 1:
1), expanding material is placed two roller mills (80-100 ℃ of roller temperature), added whipping agent and blowing promotor simultaneously after plasticating 1-4 minute, mixing 3-8min makes blowing agent concentrate;
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined temperature successively is in the 30-60 ℃ of mill; Mixing 15-25min; Or join in the Banbury mixer 80-110 ℃ of temperature control, rotor speed 40-100r/min successively; Mixing 10-20min processes rubber unvulcanizate after material is uniformly dispersed;
3), the back being handled in the rubber unvulcanizate chopping mixes through high-speed mixer with plastics; And adopt the forcing machine extruding pelletization to prepare the TPV pellet, and wherein the temperature of forcing machine is successively: a district 110-160 ℃, and two district 120-160 ℃; Three district 130-180 ℃; Four district 140-220 ℃, five district 140-220 ℃, screw speed 30-150rpm;
4) the TPV pellet that makes with step 3) after the blowing agent concentrate that, step 1) is made is pulverized is behind the high-speed mixer uniform mixing; Join simultaneously in single screw rod or the twin screw extruder, the temperature of single screw extrusion machine is followed successively by: a district 110-160 ℃, and two district 120-160 ℃; Three district 130-180 ℃; Four district 140-220 ℃, five district 140-220 ℃, screw speed 30-150rpm; Wherein each section of twin screw extruder temperature is followed successively by: screw rod one district 110-160 ℃, screw rod two district 110-180 ℃, screw rod three district 120-190 ℃, four district 120-200 ℃, five district 120-210 ℃, six district 130-220 ℃; Seven district 140-220 ℃; Eight district 140-220 ℃, screw speed is set to 20-200rpm, preferred twin screw extruder; Adopt flat mouthful mould, be high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding the blend cooling and shaping.
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