CN111234391A - Low-volatility EPDM (ethylene-propylene-diene monomer) car lamp sealing element material and preparation method thereof - Google Patents
Low-volatility EPDM (ethylene-propylene-diene monomer) car lamp sealing element material and preparation method thereof Download PDFInfo
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- 229920002943 EPDM rubber Polymers 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 9
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 8
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000012764 mineral filler Substances 0.000 claims abstract description 6
- 239000004014 plasticizer Substances 0.000 claims abstract description 6
- 229920003051 synthetic elastomer Polymers 0.000 claims description 30
- 239000005061 synthetic rubber Substances 0.000 claims description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 239000003345 natural gas Substances 0.000 claims description 10
- 239000005662 Paraffin oil Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- 239000012968 metallocene catalyst Substances 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012744 reinforcing agent Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- VLKZOEOYAKHREP-UHFFFAOYSA-N methyl pentane Natural products CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 238000009966 trimming Methods 0.000 description 5
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a low-volatility EPDM (ethylene-propylene-diene monomer) car lamp sealing element material which comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 40-60 parts of carbon black, 5-20 parts of inorganic mineral filler, 5-20 parts of plasticizer, 3-7 parts of indirect zinc oxide, 0.5-2.5 parts of auxiliary crosslinking agent, 2.5-8.5 parts of vulcanizing agent and 0.5-1.5 parts of processing aid. The invention also discloses a preparation method of the low-volatility EPDM car lamp sealing element material. The invention has the advantages of good high-temperature pressure change, low volatilization and the like, and greatly prolongs the service life of the sealing element of the car lamp.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a low-volatility EPDM (ethylene-propylene-diene monomer) car lamp sealing element material and a preparation method thereof.
Background
The automobile lamp is an essential component of an automobile, plays an important role in night illumination, driving signals, fog collision avoidance, steering signs and the like, and is an important guarantee for automobile driving safety. The existence of rubber covers or rubber sealing elements exists in the structural components of the car lamp, and the application environment is complex. Because of the influence of radiation heat of the bulb, the sealing piece must ensure the sealing performance at high temperature, and meanwhile, organic gas cannot be generated, so that the atomization phenomenon is caused, and yellowing cannot be caused to influence the attractiveness. This places severe demands on the high temperature and volatility resistance of the rubber seals.
The Ethylene Propylene Diene Monomer (EPDM) sealing element for the automobile lamp generally requires that the atomization value of the material is less than 50 mu g/g, while the atomization value of the common EPDM rubber material at high temperature is generally about 200 mu g/g, so that the low volatility requirement of the automobile lamp sealing element cannot be met. Therefore, in order to meet the actual use requirement, the development of the high-temperature-resistant and low-volatility EPDM vehicle lamp sealing element has great application prospect.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the low-volatilization EPDM (ethylene-propylene-diene monomer) car lamp sealing element material and the preparation method thereof, and the low-volatilization EPDM car lamp sealing element material has the advantages of good high-temperature pressure change, low volatilization and the like, so that the service life of the car lamp sealing element is greatly prolonged.
The invention provides a low-volatility EPDM (ethylene-propylene-diene monomer) car lamp sealing element material which comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 40-60 parts of carbon black, 5-20 parts of inorganic mineral filler, 5-20 parts of plasticizer, 3-7 parts of indirect zinc oxide, 0.5-2.5 parts of auxiliary crosslinking agent, 2.5-8.5 parts of vulcanizing agent and 0.5-1.5 parts of processing aid.
Preferably, the vulcanizing agent is one of a mixture of 2, 5-dimethyl-2, 5-di-tert-butylperoxyhexane and a vulcanizing agent BIPB, and a mixture of LUREROX101XL45-SP2 and a vulcanizing agent BIPB.
The above 2, 5-dimethyl-2, 5-di-tert-butylperoxyhexane, LUREROX101XL45-SP2, vulcanizing agent BIPB are all commercially available.
Preferably, the ethylene propylene diene monomer is ethylene propylene diene monomer prepared by adopting a metallocene catalyst with a bridged chain structure.
Preferably, the third monomer content in the ethylene propylene diene monomer is 4.5 to 5.5 wt.%.
The metallocene catalyst is prepared by using a complex of a group IVB transition metal (such as Ti, Zr, Hf) as a main catalyst, and using an alkylaluminoxane (such as MAO) or an organic boride (such as B (C)6F5)3) As a cocatalyst.
The bridged structure refers to a structure in which two ring structures are connected by an alkyl group or a silane group as a bridged chain on the basis of a general structure to prevent the structure from rotating and impart a bulk rigidity to the metallocene, and is well known to those skilled in the art.
Preferably, the weight ratio of 2, 5-dimethyl-2, 5-di-tert-butylperoxyhexane to vulcanizing agent BIPB is 2-3: 0.3-0.8.
Preferably, the weight ratio of the LUREROX101XL45-SP2 to the vulcanizing agent BIPB is 7-8: 0.3-0.8.
Preferably, the plasticizer is a hydrogenated paraffin oil, such as: hydrogenated paraffin oil SUNPAR 2280 oil, etc.
Preferably, the reinforcing agent is a fast extrusion carbon black and a natural gas process carbon black.
Preferably, the fast extruding carbon black is fast extruding carbon black N550.
Preferably, the natural gas carbon black is natural gas carbon black N770 or/and natural gas carbon black N990.
Inorganic mineral fillers such as china clay, talc or kaolin.
The invention also provides a preparation method of the low-volatility EPDM car lamp sealing element material, which comprises the following steps: mixing the raw materials, smashing the rubber, and discharging the rubber to obtain synthetic rubber; the synthetic rubber is heated, molded and cut to obtain a molded piece, then vulcanized, and the temperature is kept at 150-,wherein the vulcanization pressure is 170-190Kgf/cm2The vulcanization temperature is 170-180 ℃, and the vulcanization time is 250-350 s.
The invention selects any one of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane or LUREROX101XL45-SP2 to be used together with vulcanizing agent BIPB, and is assisted with a crosslinking agent to form a vulcanization system, thereby reducing the product odor on one hand, and preventing the pollution of free sulfur in the material to a car lamp system on the other hand due to no sulfur formula; the raw ethylene propylene diene monomer rubber selected by the invention has high polymerization activity, narrow molecular weight distribution and less volatile matter, and the content of the medium third monomer can ensure that the residual unsaturation degree of the rubber composite material is reduced on the basis of meeting a certain crosslinking degree; hydrogenated paraffin oil with high flash point and high quality is selected as a plasticizer, so that volatilization of small molecular substances can be effectively reduced, and the high flash point ensures good high-temperature resistance of the material; the high-structure easily-dispersible fast extrusion carbon black and the natural gas method carbon black are selected and used together, a small amount of inorganic mineral filler is used to form a reinforcing system, the fast extrusion carbon black provides a good reinforcing effect, the physical performance of the material is ensured, the volatile matter content of the natural gas method carbon black is low, so that the overall low-volatility requirement of the material is met, the cost can be reduced on one hand, and the surface bleeding phenomenon of the product can be effectively improved on the other hand due to the addition of the inorganic mineral filler; the substances are matched with each other, so that the automobile lamp sealing piece has the advantages of good high-temperature pressure change, low volatilization and the like, and the service life of the automobile lamp sealing piece is greatly prolonged; the hardness of the invention is 45-55 degrees, the compression set is less than 25 percent at 150 ℃ for 72 hours, and the atomization value is less than 50 mug/g.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A low-volatility EPDM car lamp sealing element material comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 55020 parts of carbon black, 99030 parts of carbon black, 15 parts of argil, 228015 parts of paraffin oil SUNPAR, 5 parts of indirect-method zinc oxide, 1.5 parts of auxiliary crosslinking agent Arcgran70/GR, 2.5 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, 0.5 part of vulcanizing agent BIPB and 1 part of processing aid FL;
the ethylene propylene diene monomer is prepared by adopting a metallocene catalyst with a bridge chain structure, and the content of a third monomer in the ethylene propylene diene monomer is 5 wt%.
The preparation method of the low-volatility EPDM car lamp sealing element material comprises the following steps:
adding the raw materials into an internal mixer for mixing, smashing the materials by an open mill, and obtaining the synthetic rubber by sheet discharging, wherein the hardness of the synthetic rubber is 53 degrees, the strength of the synthetic rubber is 13.6MPa, and the elongation at break of the synthetic rubber is 588%;
uniformly heating the synthetic rubber by an open mill, molding by a molding machine, cutting to obtain a molded part, putting the molded part into a mold cavity, and putting the molded part into the mold cavity under the pressure of 180Kgf/cm2Vulcanizing at 175 ℃, trimming for 300s, keeping the temperature in a high-temperature oven at 165 ℃ for 4h, finally inspecting, packaging and warehousing to obtain the low-volatility EPDM car lamp sealing element material.
Example 2
A low-volatility EPDM car lamp sealing element material comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 55030 parts of carbon black, N77025 parts of carbon black, 10 parts of argil, 228018 parts of paraffin oil SUNPAR, 5 parts of indirect-method zinc oxide, 1 part of auxiliary crosslinking agent Arcgran70/GR, 3 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, 0.8 part of vulcanizing agent BIPB and 1 part of processing aid FL;
the ethylene propylene diene monomer is prepared by adopting a metallocene catalyst with a bridge chain structure, and the content of a third monomer in the ethylene propylene diene monomer is 5 wt%.
The preparation method of the low-volatility EPDM car lamp sealing element material comprises the following steps:
adding the raw materials into an internal mixer for mixing, smashing the materials by an open mill, and discharging the materials to obtain synthetic rubber, wherein the performance of the synthetic rubber is detected, the hardness of the synthetic rubber is 53 degrees, the strength of the synthetic rubber is 15.2MPa, and the elongation at break of the synthetic rubber is 536%;
uniformly heating the synthetic rubber by an open mill, molding by a molding machine, cutting to obtain a molded part, putting the molded part into a mold cavity, and putting the molded part into the mold cavity under the pressure of 180Kgf/cm2Vulcanizing at 175 ℃, trimming for 300s, keeping the temperature in a high-temperature oven at 165 ℃ for 4h, finally inspecting, packaging and warehousing to obtain the low-volatility EPDM car lamp sealing element material.
Example 3
A low-volatility EPDM car lamp sealing element material comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 55035 parts of carbon black, N99020 parts of carbon black, 10 parts of argil, 228015 parts of paraffin oil SUNPAR, 5 parts of indirect-method zinc oxide, 70/GR 1.5 parts of auxiliary crosslinking agent Arcgran, LUREROX101XL45-SP 27 parts, 0.3 part of vulcanizing agent BIPB and 1 part of processing aid FL;
the ethylene propylene diene monomer is prepared by adopting a metallocene catalyst with a bridge chain structure, and the content of a third monomer in the ethylene propylene diene monomer is 5 wt%.
The preparation method of the low-volatility EPDM car lamp sealing element material comprises the following steps:
adding the raw materials into an internal mixer for mixing, smashing the materials by an open mill, and discharging the materials to obtain synthetic rubber, wherein the hardness of the synthetic rubber is 54 degrees, the strength of the synthetic rubber is 14.8MPa, and the elongation at break of the synthetic rubber is 528 percent;
uniformly heating the synthetic rubber by an open mill, molding by a molding machine, cutting to obtain a molded part, putting the molded part into a mold cavity, and putting the molded part into the mold cavity under the pressure of 180Kgf/cm2Vulcanizing at 175 ℃, trimming for 300s, keeping the temperature in a high-temperature oven at 165 ℃ for 4h, finally inspecting, packaging and warehousing to obtain the low-volatility EPDM car lamp sealing element material.
Example 4
A low-volatility EPDM car lamp sealing element material comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 55020 parts of carbon black, 77020 parts of carbon black, 20 parts of talcum powder, 22805 parts of paraffin oil SUNPAR, 3 parts of indirect-method zinc oxide, 2.0 parts of auxiliary crosslinking agent Arcgran70/GR, 2.0 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, 0.5 part of vulcanizing agent BIPB and 0.5 part of processing aid FL;
the ethylene propylene diene monomer is prepared by adopting a metallocene catalyst with a bridge chain structure, and the content of a third monomer in the ethylene propylene diene monomer is 4.5 wt%.
The preparation method of the low-volatility EPDM car lamp sealing element material comprises the following steps:
adding the raw materials into an internal mixer for mixing, smashing the materials by an open mill, and discharging the materials to obtain synthetic rubber, wherein the hardness of the synthetic rubber is 52 degrees, the strength of the synthetic rubber is 14.6MPa, and the elongation at break of the synthetic rubber is 525%;
uniformly heating the synthetic rubber by an open mill, molding by a molding machine, cutting to obtain a molded part, putting the molded part into a mold cavity, and putting the molded part under the pressure of 170Kgf/cm2Vulcanizing for 250s at the temperature of 180 ℃, trimming, keeping the temperature in a high-temperature oven at 180 ℃ for 2h, finally inspecting, packaging and warehousing to obtain the low-volatility EPDM car lamp sealing element material.
Example 5
A low-volatility EPDM car lamp sealing element material comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 55030 parts of carbon black, N99030 parts of carbon black, 5 parts of kaolin, 228020 parts of paraffin oil SUNPAR, 8 parts of indirect-method zinc oxide, 0.5 part of auxiliary crosslinking agent Arcgran70/GR, 0.5 part of LUREROX101XL45-SP 28 parts, 0.5 part of vulcanizing agent BIPB and 1.5 parts of processing aid FL;
the ethylene propylene diene monomer is prepared by adopting a metallocene catalyst with a bridge chain structure, and the content of a third monomer in the ethylene propylene diene monomer is 5.5 wt%.
The preparation method of the low-volatility EPDM car lamp sealing element material comprises the following steps:
adding the raw materials into an internal mixer for mixing, smashing the materials by an open mill, and discharging the materials to obtain synthetic rubber, wherein the hardness of the synthetic rubber is 52 degrees, the strength of the synthetic rubber is 14.1MPa, and the elongation at break of the synthetic rubber is 536% by detection;
uniformly heating the synthetic rubber by an open mill, molding by a molding machine, cutting to obtain a molded part, putting the molded part into a mold cavity, and putting the molded part under the pressure of 190Kgf/cm2Vulcanizing at 170 ℃ for 350s, trimming, keeping the temperature in a high-temperature oven at 150 ℃ for 6h, finally inspecting, packaging and warehousing to obtain the low-volatility EPDM automobile lamp sealing element material。
The properties of examples 1-5 were tested and the results are shown in the following table:
| detecting items | Hardness degree ° | Compression set at 150 ℃ for 72 h% | Atomization value of mug/g |
| Detection method | GB/T 531.1 | GB/T 7759 | PV 3015 |
| Standard of merit | 45-55° | ＜25％ | ＜50μg/g |
| Example 1 | 53 | 21.2 | 42 |
| Example 2 | 53 | 23.5 | 38 |
| Example 3 | 54 | 18.5 | 41 |
| Example 4 | 52 | 22.1 | 32 |
| Example 5 | 52 | 20.3 | 48 |
The table shows that the invention has good high temperature pressure change and low volatility.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The low-volatility EPDM car lamp sealing element material is characterized by comprising the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 40-60 parts of carbon black, 5-20 parts of inorganic mineral filler, 5-20 parts of plasticizer, 3-7 parts of indirect zinc oxide, 0.5-2.5 parts of auxiliary crosslinking agent, 2.5-8.5 parts of vulcanizing agent and 0.5-1.5 parts of processing aid.
2. A low volatility EPDM lamp seal material as set forth in claim 1 wherein the vulcanizing agent is one of a mixture of 2, 5-dimethyl-2, 5-di-t-butylperoxyhexane and vulcanizing agent BIPB, a mixture of lumerox 101XL45-SP2 and vulcanizing agent BIPB.
3. The low-volatility EPDM automotive light sealing member material according to claim 1 or 2, wherein the EPDM rubber is an EPDM rubber prepared by using a metallocene catalyst having a bridged structure.
4. A low volatility EPDM lamp sealing material as set forth in claim 3 wherein the third monomer content of the EPDM rubber is 4.5-5.5 wt%.
5. A low volatility EPDM lamp sealing material as set forth in claim 2 wherein the weight ratio of 2, 5-dimethyl-2, 5-di-t-butylperoxyhexane to vulcanizing agent BIPB is 2-3: 0.3-0.8.
6. The low volatility EPDM vehicular lamp sealing member material of claim 2, wherein the weight ratio of LUREROX101XL45-SP2 to vulcanizing agent BIPB is 7-8: 0.3-0.8.
7. A low volatility EPDM automotive light sealing member material according to any one of claims 1-6, wherein said plasticizer is a hydrogenated paraffin oil.
8. A low volatility EPDM lamp seal material as set forth in any one of claims 1-7 wherein the reinforcing agent is a fast extrusion carbon black or a natural gas carbon black.
9. A low volatility EPDM vehicular lamp sealing material as claimed in any one of claims 1-8 wherein the fast extrusion carbon black is fast extrusion carbon black N550; preferably, the natural gas carbon black is natural gas carbon black N770 or/and natural gas carbon black N990.
10. A method of making a low volatility EPDM lamp seal material as claimed in any one of claims 1-9, comprising the steps of: mixing the raw materials, smashing the rubber, and discharging the rubber to obtain synthetic rubber; the synthetic rubber is heated, molded and cut to obtain a molded part, then vulcanized, and the temperature is kept at 180 ℃ for 2 to 6 hours at 150-2The vulcanization temperature is 170-180 ℃, and the vulcanization time is 250-350s。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337042A (en) * | 2021-06-11 | 2021-09-03 | 广州信强汽车配件有限公司 | High-toughness automobile waterproof sealing strip and preparation method thereof |
| CN116120671A (en) * | 2022-12-08 | 2023-05-16 | 宁国市瑞普密封件有限公司 | High-temperature-resistant ethylene propylene diene monomer rubber material and preparation method thereof |
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| CN109776974A (en) * | 2019-01-31 | 2019-05-21 | 安徽中鼎密封件股份有限公司 | A kind of heat-resisting long-time low pressure becomes EPDM rubber sealing ring and preparation method thereof |
| CN110698774A (en) * | 2019-11-22 | 2020-01-17 | 广东贝洛新材料科技有限公司 | Ethylene propylene diene monomer rubber material capable of resisting heat at 150 ℃ and low pressure change, sealing ring and preparation method |
| CN110819013A (en) * | 2019-11-22 | 2020-02-21 | 广东贝洛新材料科技有限公司 | Chlorine amine resistant ethylene propylene diene monomer rubber, sealing element and production process |
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| CN107141617A (en) * | 2017-06-27 | 2017-09-08 | 南京金三力高分子科技有限公司 | A kind of oil resistant ethylene propylene diene monomer (EPDM) material and preparation method thereof |
| CN109776974A (en) * | 2019-01-31 | 2019-05-21 | 安徽中鼎密封件股份有限公司 | A kind of heat-resisting long-time low pressure becomes EPDM rubber sealing ring and preparation method thereof |
| CN110698774A (en) * | 2019-11-22 | 2020-01-17 | 广东贝洛新材料科技有限公司 | Ethylene propylene diene monomer rubber material capable of resisting heat at 150 ℃ and low pressure change, sealing ring and preparation method |
| CN110819013A (en) * | 2019-11-22 | 2020-02-21 | 广东贝洛新材料科技有限公司 | Chlorine amine resistant ethylene propylene diene monomer rubber, sealing element and production process |
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| CN113337042A (en) * | 2021-06-11 | 2021-09-03 | 广州信强汽车配件有限公司 | High-toughness automobile waterproof sealing strip and preparation method thereof |
| CN116120671A (en) * | 2022-12-08 | 2023-05-16 | 宁国市瑞普密封件有限公司 | High-temperature-resistant ethylene propylene diene monomer rubber material and preparation method thereof |
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