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A kind of carboxyl-terminated liquid fluororubber/acrylate rubber blended elastomer and its preparation method

A liquid fluororubber and acrylate technology, applied in the field of rubber materials, can solve problems such as the need to improve mechanical properties, and achieve the effects of avoiding sticking roll phenomenon, good comprehensive performance, and reduced compression set

Active Publication Date: 2022-02-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its mechanical properties still need to be improved

Method used

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  • A kind of carboxyl-terminated liquid fluororubber/acrylate rubber blended elastomer and its preparation method
  • A kind of carboxyl-terminated liquid fluororubber/acrylate rubber blended elastomer and its preparation method
  • A kind of carboxyl-terminated liquid fluororubber/acrylate rubber blended elastomer and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Prepare the liquid fluororubber / acrylate rubber blended elastomer of the present invention according to the following raw material formula and steps, including the following raw material components by mass:

[0086] Acrylic rubber 95 parts

[0087] Carboxyl-terminated liquid fluororubber 5 parts

[0088] SA 1 copy

[0089] Carbon black N550 30 parts

[0090] Talc powder 10 parts

[0091] TCY 1

[0092] Accelerator BZ 2 parts

[0093] Zirconia 2 parts

[0094] 3 parts calcium carbonate

[0095] Anti-scorch agent CTP 0.5 parts

[0096] The preparation process is as follows:

[0097] (1) Preparation of 2.5% liquid fluororubber

[0098] Take 250g of vinylidene fluoride-hexafluoropropylene solid copolymer (number average molecular weight Mn=40w, weight average molecular weight Mw=45w) and dissolve it in 784g of acetone for 12h. Weigh 120g of hydrogen peroxide solution with a mass concentration of 30%, and 60g of potassium hydroxide, and dissolve them in 73mL of wat...

Embodiment 2

[0105] Prepare the liquid fluororubber / acrylate rubber blended elastomer of the present invention according to the following raw material formula and steps, including the following raw material components by mass:

[0106] Acrylic rubber 90 parts

[0107] Carboxyl-terminated liquid fluororubber 10 parts

[0108] Fumed white carbon black 40 parts

[0109] clay 10 parts

[0110] SA 1 copy

[0111] TCY 1

[0112] Accelerator BZ 2 parts

[0113] Titanium oxide 4 parts

[0114] 1 part magnesium carbonate

[0115] Anti-scorch agent CTP 0.5 parts

[0116] The preparation process is as follows:

[0117] (1) Preparation of 3% liquid fluororubber

[0118] Take 250g of vinylidene fluoride-hexafluoropropylene solid copolymer (number average molecular weight Mn=40w, weight average molecular weight Mw=45w) and dissolve it in 784g of acetone for 12h. Weigh 150g of hydrogen peroxide solution with a mass concentration of 30%, and 80g of potassium hydroxide, and dissolve them in 98mL ...

Embodiment 3

[0124] Prepare the liquid fluororubber / acrylate rubber blended elastomer of the present invention according to the following raw material formula and steps, including the following raw material components by mass:

[0125] Acrylic rubber 85 parts

[0126] Carboxyl-terminated liquid fluororubber 15 parts

[0127] Carbon black N330 50 parts

[0128] SA 1 copy

[0129] TCY 1

[0130] Accelerator BZ 2 parts

[0131] Zinc oxide 2 parts

[0132] 3 parts sodium carbonate

[0133] Anti-scorch agent CTP 0.5 parts

[0134] The preparation process is as follows:

[0135] (1) Preparation of 3.5% liquid fluororubber

[0136] Take 250g of vinylidene fluoride-hexafluoropropylene solid copolymer (number average molecular weight Mn=40w, weight average molecular weight Mw=45w,) and dissolve it in 784g of acetone for 12h. Weigh 170g of hydrogen peroxide solution with a mass concentration of 30%, and 100g of potassium hydroxide, and dissolve them in 122mL of water. Add hydrogen peroxide ...

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Abstract

The invention relates to a carboxyl-terminated liquid fluororubber / acrylate rubber blended elastomer, which is mainly prepared from raw materials including acrylate rubber, carboxyl-terminated liquid fluororubber and a curing agent, wherein 5-100 parts of acrylate rubber, 5-100 parts of carboxyl-terminated liquid fluororubber, 1-10 parts of curing agent. The raw materials also include a reinforcing filler, a vulcanizing agent and a vulcanization assistant; preferably, the amount of the reinforcing filler is 10 to 70 parts, the amount of the vulcanizing agent is 1 to 9 parts, and the amount of the vulcanization assistant is 1 to 70 parts. 9 parts, wherein, preferably based on 100 parts of the total amount of acrylate rubber and carboxyl-terminated liquid fluororubber. In the carboxyl-terminated liquid fluororubber / acrylate rubber blended elastomer material provided by the present invention, the carboxyl-terminated liquid fluororubber / acrylate rubber blended elastomer material forms ionic crosslinking with the curing agent, endows the material with a double-crosslinked structure, and has a reinforcing effect, specifically making the carboxyl-terminated liquid fluororubber / acrylate rubber The hardness and strength of the rubber blended elastomer material are significantly improved at the same time, the compression permanent deformation is reduced, and the comprehensive performance is good.

Description

technical field [0001] The invention belongs to the field of rubber materials, in particular to a liquid fluororubber / acrylate rubber blended elastic body, in particular to a carboxyl-terminated liquid fluororubber / acrylate rubber blended elastic body material and a preparation method thereof. Background technique [0002] Acrylate rubber (ACM) is a special synthetic rubber based on alkyl acrylate as the main monomer. The saturated main chain structure and the existence of polar ester groups make acrylate rubber have good characteristics such as high temperature resistance, oil resistance, and aging resistance. , widely used in hot oil environment, especially used as oil seal material in the automobile industry, known as automobile glue. At the same time, ACM also has problems such as insufficient temperature resistance, low strength, and large compression permanent deformation. With the development of the automobile industry, there are higher requirements for the temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/16C08L27/16C08K13/02C08K3/04C08K3/34C08K3/22C08K3/26C08K5/43C08K3/36C08K13/04C08K7/26
CPCC08L33/16C08K2003/265C08K2003/2244C08K2003/2241C08K2003/267C08K2003/2206C08L2201/08
Inventor 刘力傅家森
Owner BEIJING UNIV OF CHEM TECH
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