CN106957489A - A kind of automobile antenna base caulking gum pad - Google Patents
A kind of automobile antenna base caulking gum pad Download PDFInfo
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- CN106957489A CN106957489A CN201710295532.6A CN201710295532A CN106957489A CN 106957489 A CN106957489 A CN 106957489A CN 201710295532 A CN201710295532 A CN 201710295532A CN 106957489 A CN106957489 A CN 106957489A
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- parts
- rubber
- sheet gasket
- activating agent
- carbon black
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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
- 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
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of automobile antenna base caulking gum pad.The rubber sheet gasket includes the raw material of following parts by weight：100~150 parts of ethylene propylene diene rubber, 40~55 parts of carbon black, 30~40 parts of paraffin oil, 50~70 parts treated of calcium silicates of silane coupler, 2~9 parts of activating agent, 3~8 parts of cumyl peroxide, 1~3 part of 2,6 di-t-butyl, 4 methylphenol；The activating agent is by zinc oxide, stearic acid, polyethylene glycol according to mass ratio 5:1:2 compositions.The present invention is overcome the technical barrier in terms of the exceeded environmental protection of rubber product sulfur content, is fully met environmental requirement, reached the leading level in the world by the improvement to rubber compounding；Ensure that sulfur content avoids the pollution to environment in below 500PPM.The present invention solves the problems, such as product depanning cracky caused by peroxide crosslinking by the adjustment to vulcanization parameters.The successful exploitation of high-performing car antenna base gasket seal of the present invention, improves the competitiveness in terms of environmental protection of China's automobile industry.
Description
Technical field
The invention belongs to field of rubber technology, more particularly to a kind of automobile antenna base caulking gum pad.
Background technology
Water-tight installed in automobile top in order to meet antenna, dust-proof, the requirement of sealing is, it is necessary in car antenna bottom
Exterior a kind of gasket seal, so as to reach the function of buffering and waterproof.It is rotten based on rubber soft texture, elastic good, chemically-resistant
The gasket seal majority that the advantages of erosion uses at present is quality of rubber materials.
Rubber is macromolecular linear material, only forms solid space network structure by vulcanization, just has practicality, have
Elastic memory function, so as to play sealing function.It is most of during existing vulcanization reaction to be by sulphur and other match somebody with somebody
Mixture decomposites the cross-linking reaction that the free sulphur come take part in rubber, forms network structure.But addition sulphur causes a large amount of sulphur
Element is present in gasket seal.Cause product after useful life is reached, scrap processing and environment structure is threatened, either burn
Processing or burial processing are burnt, air, underground water, soil can all be polluted.As country gets over for the attention rate of environmental protection
Come higher, to the macromolecular material used on existing automobile, low-sulfur mark is proposed particularly with rubber product in succession for automobile industry
Standard, in favor of environment.But if not using sulphur to be crosslinked for rubber processing, tensile strength for rubber,
Performance change after tearing strength, elasticity, toughness and heat ageing can influence very big, for baroque sealed product in sulphur
Easily damaged during the molding processing depanning of change machine, sealing property declines seriously, and usage cycles shorten 1/3rd.Therefore, originally
Need a kind of not sulfureted high-performing car antenna base caulking gum pad badly in field.
The content of the invention
For solution, automobile antenna base rubber sheet gasket sulfur content is high in the prior art, the problem of causing severe contamination, this
Invention provides a kind of not sulfureted rubber sheet gasket, and rubber sheet gasket energy meet the requirement of environmental protection 500ppm sulfur content reaches
The leading level in the world, while the rubber sheet gasket possesses excellent tear resistance, tensile strength, superior heat aging performance is improved
The actually used cycle.
The present invention is adopted the following technical scheme that：A kind of automobile antenna base caulking gum pad, including following parts by weight
Raw material：100~150 parts of ethylene propylene diene rubber, 40~55 parts of carbon black, 30~40 parts of paraffin oil, what silane coupler was treated
50~70 parts of calcium silicates, 2~9 parts of activating agent, 3~8 parts of cumyl peroxide, 2,6 di-tert-butyl-4-methy phenols 1~3
Part；The activating agent is by zinc oxide, stearic acid, polyethylene glycol according to mass ratio 5:1:2 compositions.
As optimal technical scheme, the rubber sheet gasket includes the raw material of following parts by weight：Ethylene propylene diene rubber 110~
125 parts, 45~52 parts of carbon black, 35~38 parts of paraffin oil, 55~60 parts treated of calcium silicates of silane coupler, activating agent 5~7
Part, 4~6 parts of cumyl peroxide, 2,6 1~2 part of di-tert-butyl-4-methy phenols.
It is furthermore preferred that the rubber sheet gasket includes the raw material of following parts by weight：125 parts of ethylene propylene diene rubber, carbon black 52
Part, 36 parts of paraffin oil, 60 parts treated of calcium silicates of silane coupler, 7 parts of activating agent, 4.6 parts of cumyl peroxide, 2,6
1 part of di-tert-butyl-4-methy phenol.
It is preferred that, ethylene propylene diene rubber is by ethene (mass percent 45%~70%), propylene (mass percent 30%
~the random copolymer 40%) formed with diene Third monomer (mass percent 1%~3%), wherein diene Third monomer lead to
It is often one kind in dicyclopentadiene, 1,4- hexadienes or 2- ethylidene norbornenes.Diene Third monomer has special knot
Structure, two double bond only one of which energy copolymerization, undersaturated double bond primarily as interlinkage at, another undersaturated double bond will not
As main polymer chain, it can only turn into avris chain, the principal polymeric chain of EPDM is fully saturated.This characteristic causes
EPDM can resist heat, light, especially oxygen, ozone, and have fabulous vulcanization characteristics.Inventor tests through repetition test
Demonstrate,prove and work as ethylene contents 52%, propylene 43.7%, during 2- ethylidene norbornenes 4.3%, obtained rubber sheet gasket performance is optimal.
Carbon black is a kind of amorphous carbon, light, pine and superfine black powder, and specific surface area is very big, can be used as rubber blanket
The reinforcing agent of piece, can improve rubber sheet gasket intensity.
Conventional plasticiser includes naphthenic oil, paraffin oils, hydrocarbon oil etc., and present invention preferably uses paraffin oil increasing
Agent is moulded, can make the pliability of rubber sheet gasket strengthens, and is easily worked.
Zinc oxide generates accelerator zinc salt in vulcanization of rubber course, accelerator zinc salt and with rubber macromolecule reaction to complete
Chemical crosslinking.But zinc oxide dispersiveness in rubber is poor, and active utilization rate is low, so adding stearic acid in rubber compounding, carries
The compatibility of polymolecularity and rubber, to lift the active utilization rate of zinc oxide, stearic acid and polyethylene glycol can effectively facilitate rubber
The interior lubricity of glue, can effectively reduce the endogenous heat of sizing material process, improve the stability of cross-bond, enable crosslink density
Keep, improve mechanical performance.
Active filler often uses reinforcement and filler material for rubber, but because partial filler is bad with rubber compatibility, and limit
Its use, the calcium silicates that the present invention is treated from silane coupler.Pass through the calcium silicates after coupling agent modified, Ke Yiti
High compatibility and bonding interface with rubber, makes stress preferably pass to inorganic particulate, improves the tearing strength of elastomeric material,
Tensile strength improves rubber toughness simultaneously.The calcium silicates activated using silane coupler is solved peroxide replacement sulfur cross-linking and led
During the use of cause the problem of easy aging.
Vulcanizing agent is that one kind can make rubber molecular chain play cross-linking reaction, makes linear molecule formation space network, plastic
Property reduction, the increased material of elasticator (elasticizer) intensity.In addition to some thermoplastic elastomers need not vulcanize, natural rubber and various synthesis
Rubber all needs supplying vulcanizing agent to be vulcanized.Rubber just has valuable use value after vulcanization, and mechanical property is greatly improved.
As optimal technical scheme, vulcanizing agent of the present invention is cumyl peroxide for not sulfureted crosslinking agent, the vulcanizing agent
Sulfur component (be not present and combine sulphur, free sulfur speciation, but have a small amount of natural element sulphur), the content of element sulphur are not contained
Less than 500PP.
Another object of the present invention is the preparation method that above-mentioned rubber sheet gasket is claimed, and this method comprises the following steps：
By the treated calcium silicates of ethylene propylene diene rubber, carbon black, paraffin oil, silane coupler, zinc oxide, stearic acid, polyethylene glycol, 2,
6 di-tert-butyl-4-methy phenols are kneaded in kneading machine, and cumyl peroxide is added in mixing process and is vulcanized, is vulcanized
Temperature is 165~185 DEG C, and cure time is 120~460s, and mill extrusion forming is used after vulcanization terminates, and is carried out after taking-up
Finishing, inspection, packaging.
As optimal technical scheme, the curing temperature of the rubber sheet gasket is 175~180 DEG C, cure time is 120~
240s。
Beneficial effects of the present invention are as follows：
The present invention overcomes the technology hardly possible in terms of the exceeded environmental protection of rubber product sulfur content by the improvement to rubber compounding
Belonged in topic, composition in addition to ethylene propylene diene rubber degradable and environmentally friendly.The sizing material kneaded according to inventive formulation, it is complete
Full up toe ring guaranteed request, has reached the leading level in the world；Existing production specifications are solved using peroxide crosslinking processes
The sulfur content problem of lower product, it is ensured that sulfur content avoids the pollution to environment in below 500PPM.The present invention passes through to vulcanization
The adjustment of technological parameter, curing temperature is 175~180 DEG C, and cure time is solved for 120~240s caused by peroxide crosslinking
Product depanning cracky problem.The tripoli that is handled by using silane coupler, increase peroxide and rubber are tightly combined
Property, solve using easy problem of aging caused by peroxide replacement sulfur cross-linking.Product rubber sheet gasket is made in the inventive method
Surface self-lubricating, beneficial to assembling, and possesses excellent tear resistance, tensile strength, superior heat aging performance solves production effect
The low problem of rate；The successful exploitation of high-performing car antenna base gasket seal of the present invention, instead of import partses, improve China's vapour
The competitiveness in terms of environmental protection of car industry, accelerates China from automobile consumption big country to the transformation of automobile production big country.
Embodiment
The present invention is described in further detail below by embodiment.
It is embodiment 1-7 each group distribution ratios as shown in table 1.
Table 1
100~150 parts of ethylene propylene diene rubber, 40~55 parts of carbon black, 30~40 parts of paraffin oil, what silane coupler was treated
50~70 parts of calcium silicates, zinc oxide, stearic acid, 2~9 parts of polyethylene glycol, 3~8 parts of cumyl peroxide, 2,6 di-t-butyls-
1~3 part of 4- methylphenols.
Embodiment 1
The preparation method of rubber sheet gasket is as follows：
Raw material is weighed in proportion：125 parts of ethylene propylene diene rubber, 52 parts of carbon black, 36 parts of paraffin oil, silane coupler is treated
60 parts of calcium silicates, 4.375 parts of zinc oxide, 0.875 part of stearic acid, 1.75 parts of polyethylene glycol, 4.6 parts of cumyl peroxide,
2,61 part of di-tert-butyl-4-methy phenols, wherein ethylene propylene diene rubber are by ethene 52%, propylene 43.7%, 2- ethylidene drop
The random copolymer of the formation of bornylene 4.3%.
By the treated calcium silicates of ethylene propylene diene rubber, carbon black, paraffin oil, silane coupler, zinc oxide, stearic acid, poly-
Ethylene glycol, 2,6 di-tert-butyl-4-methy phenols are kneaded in kneading machine, and cumyl peroxide is added in mixing process and is carried out
Vulcanization, curing temperature is 170 DEG C, and cure time is 300s, is repaiied after mill extrusion forming, taking-up are used after vulcanization terminates
Whole, inspection, packaging.
Embodiment 2
Differ only in component composition different, conditions of vulcanization difference.
Curing temperature is 180 DEG C, and cure time is 120s.
Embodiment 3
Differ only in component composition different, conditions of vulcanization difference.
Curing temperature is 175 DEG C, and cure time is 200s.
Comparative example
100 parts of ethylene propylene diene rubber, 80 parts of carbon black, 60 parts of paraffin oil, 2 parts of sulphur, 0.5 part of 2- benzothiazolyl mercaptans,
N- cyclohexyl -2-[4-morpholinodithio base sulfenamide, 2 parts of 2-mercaptobenzimidazole.Comparative example is according to above-mentioned material composition using this
Field conventional method carries out elastomeric compound mixing, and shaping, molding processing is repaired after taking-up, checked, packed.
Rubber sheet gasket prepared by embodiment 1 and comparative example carries out performance test, and test result is as shown in table 2.
Table 2：
Claims (6)
1. a kind of automobile antenna base caulking gum pad, it is characterised in that include the raw material of following parts by weight：EPDM
100~150 parts of rubber, 40~55 parts of carbon black, 30~40 parts of paraffin oil, 50~70 parts treated of calcium silicates of silane coupler,
2~9 parts of activating agent, 3~8 parts of cumyl peroxide, 2,6 1~3 part of di-tert-butyl-4-methy phenols；The activating agent is by oxygen
Change zinc, stearic acid, polyethylene glycol according to mass ratio 5:1:2 compositions.
2. rubber sheet gasket according to claim 1, it is characterised in that include the raw material of following parts by weight：EPDM
110~125 parts of rubber, 45~52 parts of carbon black, 35~38 parts of paraffin oil, 55~60 parts treated of calcium silicates of silane coupler,
5~7 parts of activating agent, 4~6 parts of cumyl peroxide, 2,6 1~2 part of di-tert-butyl-4-methy phenols.
3. rubber sheet gasket according to claim 1, it is characterised in that include the raw material of following parts by weight：EPDM
125 parts of rubber, 52 parts of carbon black, 36 parts of paraffin oil, 60 parts treated of calcium silicates of silane coupler, 7 parts of activating agent, peroxidating two
4.6 parts of isopropylbenzene, 2,61 part of di-tert-butyl-4-methy phenols.
4. rubber sheet gasket according to claim 1, it is characterised in that ethylene propylene diene rubber is by 45wt%~70wt% second
The random copolymer of alkene, 30wt%~40wt% propylene and the formation of 1wt%~3wt% dienes Third monomer, wherein diene the 3rd
Monomer is usually one kind in dicyclopentadiene, 1,4- hexadienes or 2- ethylidene norbornenes.
5. a kind of preparation method of rubber sheet gasket as claimed in claim 1, it is characterised in that comprise the following steps：
By the treated calcium silicates of ethylene propylene diene rubber, carbon black, paraffin oil, silane coupler, zinc oxide, stearic acid, poly- second two
Alcohol, 2,6 di-tert-butyl-4-methy phenols are kneaded in kneading machine, and cumyl peroxide is added in mixing process and is vulcanized,
Curing temperature is 165~185 DEG C, and cure time is 120~460s, mill extrusion forming is used after vulcanization terminates, after taking-up
Repaired, checked, packed.
6. preparation method according to claim 5, it is characterised in that the curing temperature of the rubber sheet gasket is 175~180
DEG C, cure time is 120~240s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295532.6A CN106957489A (en) | 2017-04-28 | 2017-04-28 | A kind of automobile antenna base caulking gum pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295532.6A CN106957489A (en) | 2017-04-28 | 2017-04-28 | A kind of automobile antenna base caulking gum pad |
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| Publication Number | Publication Date |
|---|---|
| CN106957489A true CN106957489A (en) | 2017-07-18 |
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| CN201710295532.6A Pending CN106957489A (en) | 2017-04-28 | 2017-04-28 | A kind of automobile antenna base caulking gum pad |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563639A (en) * | 2021-07-23 | 2021-10-29 | 大连环球矿产股份有限公司 | Light-colored solid silane coupling agent |
| CN117209911A (en) * | 2023-11-09 | 2023-12-12 | 高碑店市峰业橡胶制品有限责任公司 | Ageing-resistant rubber sealing element and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1683835A1 (en) * | 2003-11-11 | 2006-07-26 | NOK Corporation | Epdm composition |
| CN104893116A (en) * | 2015-05-11 | 2015-09-09 | 苏州国泰科技发展有限公司 | Production method for die-sticking-free vulcanized sealing ring for automobile copper piece |
-
2017
- 2017-04-28 CN CN201710295532.6A patent/CN106957489A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1683835A1 (en) * | 2003-11-11 | 2006-07-26 | NOK Corporation | Epdm composition |
| CN104893116A (en) * | 2015-05-11 | 2015-09-09 | 苏州国泰科技发展有限公司 | Production method for die-sticking-free vulcanized sealing ring for automobile copper piece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563639A (en) * | 2021-07-23 | 2021-10-29 | 大连环球矿产股份有限公司 | Light-colored solid silane coupling agent |
| CN117209911A (en) * | 2023-11-09 | 2023-12-12 | 高碑店市峰业橡胶制品有限责任公司 | Ageing-resistant rubber sealing element and preparation method thereof |
| CN117209911B (en) * | 2023-11-09 | 2024-02-13 | 高碑店市峰业橡胶制品有限责任公司 | Ageing-resistant rubber sealing element and preparation method thereof |
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Application publication date: 20170718 |
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