CN102643382B - Novel peroxide-cured acrylate rubber and preparation method thereof - Google Patents

Novel peroxide-cured acrylate rubber and preparation method thereof Download PDF

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Publication number
CN102643382B
CN102643382B CN201210080156.6A CN201210080156A CN102643382B CN 102643382 B CN102643382 B CN 102643382B CN 201210080156 A CN201210080156 A CN 201210080156A CN 102643382 B CN102643382 B CN 102643382B
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peroxide
monomer
preparation
acrylate rubber
sulfuration
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CN102643382A (en
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周武刚
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Chengdu Daohong Fluorine Rubber Co ltd
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CHENGDU DOWHON INDUSTRIAL CO LTD
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Abstract

The invention discloses a novel peroxide-cured acrylate rubber and a preparation method thereof. The novel peroxide-cured acrylate rubber comprises the following components in parts by weight: 80-90 parts of acrylate type monomers, 3-10 parts of cure site monomers which can react with a peroxide, 0-10 parts of auxiliary curing monomers, 0.05-0.25 part of initiator, 2-4 parts of emulsifier and 0.05-0.1 part of regulator; and the preparation method comprises the following steps: (1) adding raw materials into a reaction kettle and reacting for 4-8 hours at the temperature of 75-85 DEG C to prepare a polyacrylate emulsion; and (2) diluting the polyacrylate emulsion to 2-4 times of the original volume, adding electrolyte for agglomeration, washing and then drying. The invention provides the novel peroxide-cured acrylate rubber and the preparation method thereof. The novel peroxide-cured acrylate rubber has the advantages that the novel peroxide-cured acrylate rubber has oil resistance and high temperature resistance, the breaking strength after curing is 10-13MPa, the elongation rate is not less than 200%, the hardness is 65-750, the Mooney value is 35-50, the high-temperature compression deformation is 25-40% and the like.

Description

Peroxide cure acrylic elastomer and preparation method thereof
Technical field
The present invention relates to a kind of novel peroxide cure acrylic elastomer and preparation method thereof.
Background technology
Acrylic elastomer is taking acrylate as major ingredient, with the functional high molecule material forming with the monomer copolymerization of active group on a small quantity, there is the high temperature resistant of excellence, resistance to ozone, weather-resistant, the performances such as oil resistant, on the oil resisting rubber goods that use, there is peculiar advantage under making hot conditions, now become the high-temperature oil resistance specialty elastomer that cost performance is higher, be specially adapted to automobile crane, valve rod, head gasket, hydraulic oil pipeline etc., conventional acrylic elastomer adds easily corrosion mould in man-hour at present, when high temperature compressed, tension set is larger, sulfuration transformation efficiency is lower, cure efficiency is poor, there is corrosion mode tool in the man-hour of adding, permanent set at high temperature is large, processing and physicals are poor, sulfuration transformation efficiency is lower, cure efficiency is poor, production process safety coefficient is lower, the shortcomings such as not environmental protection.
Summary of the invention
Object of the present invention is to overcome the deficiencies in the prior art, provide one to add the erosion mould that is stale-proof man-hour, permanent set at high temperature is low, processing and good physical performance, sulfuration transformation efficiency is high, cure efficiency is good, and production process safety coefficient is high, novel peroxide cure acrylic elastomer of one of environmental protection and preparation method thereof.
The object of the invention is to be achieved through the following technical solutions: novel peroxide cure acrylic elastomer, it is made up of following component:
Acrylic ester monomer 80~90, can with the sulfuration point monomer 3~10 of peroxide reactions, auxiliary sulfuration monomer 0~10, initiator 0.05~0.25, emulsifying agent 2~4, conditioning agent 0.05~0.1;
Described acrylate monomer is that one or more in ethyl propenoate, butyl acrylate, vinylformic acid alcoxyl base ethyl ester are combined; Described can be any one in vinylchlorid, bromopropylene, bromobutene with the sulfuration point monomer of peroxide reactions; Described auxiliary sulfuration monomer is any one in vinylformic acid, methyl propenoic acid glycidyl ether; Described emulsifying agent is at least one in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate; Described initiator comprises any one in Potassium Persulphate, ammonium persulphate or ammonium persulphate and sodium bisulfite mixture; Described initiator comprises positive Dodecyl Mercaptan or diisopropylbenzene(DIPB) sulphur ortho ester.
Above-mentioned novel peroxide cure acrylic elastomer preparation method, it comprises the following steps:
(1) in the reactor of built-in agitator, thermometer and reflux exchanger, add raw material, after stirring, reactor is heated, at the temperature of 75~85 DEG C, react 4~8 hours, make polyacrylate dispersion;
(2) in reactor, add water, polyacrylate dispersion is diluted to original 2~4 times, add again at least one in the three kinds of ionogen of sodium-chlor, calcium chloride, magnesium chloride that all account for total amount 3~10% to condense, after cohesion, use continuously deionized water wash, after having washed, in drying installation, be dried, drying temperature is 60~100 DEG C, and be 10~15 hours time of drying, obtains novel peroxide cure acrylic elastomer after being dried.
The invention has the beneficial effects as follows: the invention provides a kind of novel peroxide cure acrylic elastomer and preparation method thereof, with acrylic ester monomer, can with the sulfuration monomer of peroxide reactions, auxiliary sulfuration monomer is comonomer, pass through emulsion polymerisation process, synthesize polyacrylic rubber rubber, through mixing, peroxide cure monomer, make a kind of polyacrylic rubber with precrosslink structure, by the molecular designing to polymkeric substance and the selection to reactive monomer, make acrylic elastomer there is its fundamental property and can use peroxide cure performance, can be compared with the sizing material of the rubber size of peroxide cure and the vulcanization system with conventional, there is very high vulcanization rate, prepared vulcanized article has excellent thermotolerance and low compression set, and not containing any extractible inorganic impurity, under superoxide or redox initiation system existence, at appropriate reaction temperature, make novel peroxide cure acrylic elastomer by the method for pre-newborn polymerization, adopt auxiliary sulfuration monomer, can improve sulfuration transformation efficiency and cure efficiency, adopt conventional emulsion polymerisation process, production process safety coefficient is high, have and do not corrode mould, processing and good physical performance, sulfuration transformation efficiency is high, cure efficiency is good, production process safety coefficient is high, environmental protection, good combination property, oil resistant is high temperature resistant, breaking tenacity after sulfuration is 10~13MPa, elongation>=200%, hardness is 65~75 0, the advantage such as Mooney point is 35~50, and high temperature compression is 25~40%.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
Embodiment 1:
Novel peroxide cure acrylic elastomer, it is made up of following component:
Ethyl propenoate 50, butyl acrylate 35, vinylchlorid 10, vinylformic acid 5, Potassium Persulphate 0.02, diisopropylbenzene(DIPB) sulphur ortho ester 0.03, Sodium dodecylbenzene sulfonate 2, conditioning agent 0.05.
Novel peroxide cure acrylic elastomer preparation method, it comprises the following steps:
(1) in the reactor of built-in agitator, thermometer and reflux exchanger, add raw material, after stirring, reactor is heated, at the temperature of 80 DEG C, react 6 hours, make polyacrylate dispersion;
(2) in reactor, add water, polyacrylate dispersion is diluted to original 2 times, add again the sodium chloride electrolysis matter that all accounts for total amount 3% to condense, after cohesion, use continuously deionized water wash, after having washed, in drying installation, be dried, drying temperature is 60 DEG C, and be 10 hours time of drying, obtains novel peroxide cure acrylic elastomer after being dried.
Embodiment 2:
Novel peroxide cure acrylic elastomer, it is made up of following component:
Vinylformic acid alcoxyl base ethyl ester 90, bromopropylene 7, methyl propenoic acid glycidyl ether 10, ammonium persulphate 0.1, positive Dodecyl Mercaptan 0.1, sodium lauryl sulphate 4, conditioning agent 0.1.
Novel peroxide cure acrylic elastomer preparation method, it comprises the following steps:
(1) in the reactor of built-in agitator, thermometer and reflux exchanger, add raw material, after stirring, reactor is heated, at the temperature of 85 DEG C, react 4 hours, make polyacrylate dispersion;
(2) in reactor, add water, polyacrylate dispersion is diluted to original 3 times, add again and account for total amount 5% electrolysis of magnesium chloride matter and condense, after cohesion, use continuously deionized water wash, after having washed, in drying installation, be dried, drying temperature is 100 DEG C, and be 15 hours time of drying, obtains novel peroxide cure acrylic elastomer after being dried.
Embodiment 3:
Novel peroxide cure acrylic elastomer, it is made up of following component:
Vinylformic acid alcoxyl base ethyl ester 60, butyl acrylate 20, bromobutene 3, ammonium persulphate 0.1, sodium bisulfite 0.1, diisopropylbenzene(DIPB) sulphur ortho ester 0.05, sodium lauryl sulphate 3.5, conditioning agent 0.07.
Novel peroxide cure acrylic elastomer preparation method, it comprises the following steps:
(1) in the reactor of built-in agitator, thermometer and reflux exchanger, add raw material, after stirring, reactor is heated, at the temperature of 75 DEG C, react 8 hours, make polyacrylate dispersion;
(2) in reactor, add water, polyacrylate dispersion is diluted to original 4 times, add again the calcium chloride electrolyte that accounts for total amount 10% to condense, after cohesion, use continuously deionized water wash, after having washed, in drying installation, be dried, drying temperature is 80 DEG C, and be 12 hours time of drying, obtains novel peroxide cure acrylic elastomer after being dried.

Claims (2)

1. a peroxide cure acrylic elastomer, is characterized in that: it is prepared from by the raw material of following component and weight ratio:
Acrylic ester monomer 80~90, can with the sulfuration point monomer 3~10 of peroxide reactions, auxiliary sulfuration monomer 0~10, initiator 0.05~0.25, emulsifying agent 2~4, conditioning agent 0.05~0.1;
Described acrylic ester monomer is one or more combinations in ethyl propenoate, butyl acrylate, vinylformic acid alcoxyl base ethyl ester;
Described can be any one in vinylchlorid, bromopropylene, bromobutene with the sulfuration point monomer of peroxide reactions;
Described auxiliary sulfuration monomer is any one in vinylformic acid, methyl propenoic acid glycidyl ether;
Described emulsifying agent is at least one in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate;
Described initiator comprises any one in Potassium Persulphate, ammonium persulphate or ammonium persulphate and sodium bisulfite mixture;
Described initiator comprises positive Dodecyl Mercaptan or diisopropylbenzene(DIPB) sulphur ortho ester.
2. the preparation method of a kind of peroxide cure acrylic elastomer as claimed in claim 1, is characterized in that: it comprises the following steps:
(1) in the reactor of built-in agitator, thermometer and reflux exchanger, add above-mentioned raw materials, after stirring, reactor is heated, at the temperature of 75~85 DEG C, react 4~8 hours, make polyacrylate dispersion;
(2) in reactor, add water, polyacrylate dispersion is diluted to original 2~4 times, add again at least one in the three kinds of ionogen of sodium-chlor, calcium chloride, magnesium chloride that all account for total amount 3~10% to condense, after cohesion, use continuously deionized water wash, after having washed, in drying installation, be dried, drying temperature is 60~100 DEG C, and be 10~15 hours time of drying, obtains peroxide cure acrylic elastomer after being dried.
CN201210080156.6A 2012-03-23 2012-03-23 Novel peroxide-cured acrylate rubber and preparation method thereof Active CN102643382B (en)

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CN111040539B (en) * 2019-12-18 2021-08-03 浙江传化涂料有限公司 Coating and self-spraying paint

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101033276A (en) * 2007-03-27 2007-09-12 中山大学 Self-deposition coating based on vinylidene chloride-acrylate copolymer latex and preparing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101033276A (en) * 2007-03-27 2007-09-12 中山大学 Self-deposition coating based on vinylidene chloride-acrylate copolymer latex and preparing method

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Address after: No. 238-1, Gangfu Road, North Area of Modern Industrial Port, Pidu District, Chengdu, Sichuan 610000

Patentee after: Chengdu Daohong Fluorine Rubber Co.,Ltd.

Address before: 611734 No. 238-1, Gangfu Road, Chengdu modern industrial port, Pixian County, Chengdu, Sichuan

Patentee before: CHENGDU DOWHON INDUSTRIAL Co.,Ltd.

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