Heat aging resistant modifier ACR

A heat-resistant aging and modifier technology, which is applied in the field of polymer compound compositions, can solve the problems of heat resistance and aging resistance not reaching the expected effect, large addition amount, and little performance improvement, so as to reduce the cost of raw materials , reduce interfacial tension, and reduce labor costs

Inactive Publication Date: 2018-12-07
江西岳峰集团高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The modifier ACR is mainly an external chemical copolymer to improve and enhance the performance of magnesium cement. The modifier ACR is widely used. At present, researchers at home and abroad mostly improve the performance through the preparation process, such as changing the feeding method, reaction temperature, and acrylates. The monomer ratio controls the molecular weight of the acrylate copolymer to change its processing performance, but the overall performance is not improved much. The improver ACR still needs a large amount of addition to achieve the effect. The current improver ACR is for The heat resistance and aging resistance have not achieved the expected effect, and the existing deficiencies need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An anti-heat aging modifier ACR, which is copolymerized with methyl methacrylate and acrylate at a weight ratio of 20:30, with intrinsic viscosities of 2.5, 4.3 and 7.9.

[0019] The preparation method of described a kind of anti-heat aging modifier ACR is to polymerize methyl methacrylate and ethyl acrylate with a weight ratio of 20:30 in the presence of emulsifier, initiator, molecular weight regulator, temperature is 38°C.

[0020] The acrylate is ethyl acrylate.

[0021] The emulsifier is an alkyl phosphate, and the consumption is 0.2% of the total weight of the polymerized monomers.

[0022] The emulsifier is a compound of anionic emulsifier and nonionic emulsifier, and the dosage is 0.3% of the total weight of polymerized monomers.

[0023] The initiator is a combination, one is a persulfate and the other is a sulfite, and the dosage is 0.3% of the total weight of the polymerized monomers.

[0024] The molecular weight regulator is a C4-C20 alkyl mercaptan, and...

Embodiment 2

[0031] An anti-heat aging modifier ACR, which is copolymerized with methyl methacrylate and acrylate at a weight ratio of 30:40, with intrinsic viscosities of 3.8, 4.9 and 8.4.

[0032] The preparation method of the modifier ACR of a kind of anti-heat aging is to polymerize methyl methacrylate and ethyl acrylate with a weight ratio of 30:40 in the presence of an emulsifier, an initiator, a molecular weight regulator, and the temperature is 48°C.

[0033] The acrylate is butyl acrylate.

[0034] The emulsifier is methyl cellulose, and the consumption is 1.3% of the total weight of the polymerized monomers.

[0035] The emulsifier is an anionic emulsifier, and the consumption is 0.8% of the total weight of the polymerized monomers.

[0036] The initiator is a combination, one is organic peroxide, the other is bisulfite, and the dosage is 0.5% of the total weight of polymerized monomers.

[0037] The molecular weight regulator is a C4-C20 alkyl mercaptan, and its total usage i...

Embodiment 3

[0044] An anti-heat aging modifier ACR, which is copolymerized with methyl methacrylate and acrylate at a weight ratio of 55:65, with intrinsic viscosities of 5.5, 7.3 and 10.9.

[0045] The preparation method of the modifier ACR of a kind of anti-heat aging is to polymerize methyl methacrylate and ethyl acrylate with a weight ratio of 55:65 in the presence of an emulsifier, an initiator, a molecular weight regulator, and the temperature It is 82°C.

[0046] The acrylate is ethyl methacrylate.

[0047] The emulsifier is polyoxypropylene alkyl fatty acid ester, and the consumption is 3% of the total weight of the polymerized monomers.

[0048] The emulsifier is a compound of anionic emulsifier and nonionic emulsifier, and the dosage is 1.5% of the total weight of polymerized monomers.

[0049] The initiator is a composition, one is an azo compound, and the other is a kind of thiosulfate, and the dosage is 1.4% of the total weight of the polymerized monomers.

[0050] The mol...

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PUM

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Abstract

The invention discloses a heat aging resistant modifier ACR. The heat aging resistant modifier ACR is prepared by copolymerization of methyl methacrylate and acrylate at a weight ratio of 20-55:30-65,wherein the intrinsic viscosity of the heat aging resistant modifier ACR is 2.5-5.5, 4.3-7.3 and 7.9-10.9. Compared with the prior art, the advantages of the heat aging resistant modifier ACR are that the addition of the acrylate in the heat aging modifier ACR greatly improves plasticity, heat resistance, cold resistance and water resistance, the excellent solubility and fast drying of an initiator enhance the rate and performance of the overall chemical reaction, an emulsifier can prevent negative effects of metal ions on products, reduce interfacial tension and energy required to form the solution, greatly reduce production cost and improve the performance of the modifier ACR, and the heat aging resistant modifier ACR can be greatly improved in tensile strength without affecting the stability and impact toughness of the products, is less in usage for achieving effects, reduced in cost, and simple in preparation process and operation, does not need complex equipment, can reduce laborcost and raw material cost and is convenient in use for the products.

Description

technical field [0001] The invention relates to the technical field of compound combinations, in particular to a polymer compound composition. Background technique [0002] ACR is the abbreviation of acrylate copolymer. Acrylate copolymer is a general term for polymers produced by copolymerization of acrylate (mainly methyl acrylate, ethyl ester, butyl and methyl methacrylate) as raw materials. Acrylic acid Fat has active double bonds, is easy to self-polymerize, and is also easy to copolymerize. The comonomer can be one or more, and can be another acrylic compound or other unsaturated compounds with double bonds (mainly styrene, acrylonitrile, etc.) , vinyl acetate, vinyl chloride, etc.), performance, form and use vary greatly with the selected monomers and polymerization methods. [0003] The modifier ACR is mainly an external chemical copolymer to improve and enhance the performance of magnesium cement. The modifier ACR is widely used. At present, researchers at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F2/26C08F2/30
CPCC08F2/26C08F2/30C08F220/18C08F220/1804C08F220/14
Inventor 田岳南
Owner 江西岳峰集团高分子材料有限公司
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