A kind of low compression set active chlorine type acrylate rubber and preparation method thereof

An acrylate and permanent deformation technology, which is applied in the field of processing and synthetic rubber compounding, can solve the problems that the compression permanent deformation of rubber materials cannot be reduced, the effect of compression permanent deformation is not obvious, and the hardness and tensile strength of rubber materials can be improved, so as to achieve improvement Compression set performance, high hardness, effect of improving coupling strength

Active Publication Date: 2021-07-30
四川青龙丙烯酸酯橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] It is effective in the case of insufficient vulcanization of the rubber compound, and the effect of reducing the compression set is not obvious under the condition of sufficient vulcanization.
[0017] These methods generally have some shortcomings, and cannot increase the hardness and tensile strength of the rubber while reducing the compression permanent deformation of the rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] A preparation method of low compression set active chlorine type acrylate rubber, comprising the following steps:

[0037] Active chlorine-type acrylate rubber, quick-extrusion carbon black, precipitated white carbon black, processing aids and anti-aging agents are added to an open mill for the first mixing to obtain the first mixed rubber. The specific steps of the first mixing in the embodiment of the present invention are as follows: (1) Weigh the active chlorine-type acrylate rubber, quick-extrusion carbon black, precipitated silica, processing aids and anti-aging agents according to the mixing ratio; (2) ) Turn on the mill, press the stearic acid on the roller, then put the active chlorinated acrylate rubber into the roller, make the rubber cover the roller, adjust the roller distance, and keep a small amount of glue on the roller; (3) put Quickly extrude carbon black, precipitated white carbon black, and anti-aging agent are evenly added to the roller for mixing. ...

Embodiment 1

[0041] A preparation method of low compression set active chlorine type acrylate rubber, comprising the following steps:

[0042] (1) Weigh the following raw materials by weight: acrylate rubber ACM-100: 100 parts; quick extrusion carbon black N-550: 25 parts; precipitated white carbon black: 25 parts; silane coupling agent KH-550: 2 Antiaging agent TK-100: 5 parts; Stearic acid: 2 parts; No. 3 vulcanizing agent: 2 parts.

[0043] (2) Turn on the open mill, press stearic acid on the roller, then put acrylate rubber ACM-100 into the roller, make the rubber cover the roller, adjust the roller distance, and keep a small amount of glue on the roller;

[0044] (3) Evenly add quick-extrusion carbon black, precipitated white carbon black, and anti-aging agent into the roller for mixing. When half of the quick-extruded carbon black and precipitated white carbon black are added, 3 / 4 cutting knife 1 on each side 2 times, then add the remaining quick-pressed carbon black and precipitate...

Embodiment 2

[0056] Example 2 (acrylic rubber ACM-200, different rubber specifications)

[0057] A preparation method of low compression set active chlorine type acrylate rubber, comprising the following steps:

[0058] (1) Weigh the following raw materials by weight: acrylate rubber ACM-200: 100 parts; quick extrusion carbon black N-550: 25 parts; precipitated white carbon black: 25 parts; silane coupling agent KH-550 2 parts ; 5 parts of anti-aging agent TK-100; 2 parts of stearic acid; 2 parts of No. 3 vulcanizing agent.

[0059] The processing and detection method are the same as in Example 1, and the detection results are as shown in Table 1.

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Abstract

The invention provides a low compression set active chlorine type acrylate rubber and a preparation method thereof, belonging to the technical field of synthetic rubber. A low compression set active chlorine type acrylate rubber, its raw materials include by weight fraction: 100 parts of active chlorine type acrylate rubber, 20-100 parts of reinforcing agent, 1-5 parts of silane coupling agent, vulcanizing agent 1 ‑3 parts, 1‑5 parts of processing aid and 2‑5 parts of anti-aging agent, the reinforcing agent includes fast extruded carbon black and precipitated silica, the mass ratio of fast extruded carbon black and precipitated silica is 1:1 . The active chlorine-type acrylate rubber not only has good low compression set performance, but also has good thermal stability, high hardness and high tensile strength. A method for preparing low compression set active chlorine-type acrylate rubber. The silane coupling agent is added when the temperature of the rubber mixture is 50-70°C. The method is simple, and the prepared active chlorine-type acrylate rubber has better properties .

Description

technical field [0001] The invention belongs to the technical field of compounding and processing of synthetic rubber, and in particular relates to a low compression set active chlorine type acrylate rubber and a preparation method thereof. Background technique [0002] Acrylate rubber (ACM) is a kind of elastic material formed by the copolymerization of acrylate and monomers that can provide cross-linking reactive groups. Its main chain is a saturated structure, so it has heat resistance and UV radiation resistance. And ozone resistance; its side chain contains polar ester groups, so it also has excellent oil resistance. The main use of acrylate rubber is to make heat-resistant and oil-resistant seals and oil pipes, etc., mainly used in automobiles, motorcycles, power transformers, ships, petrochemical and other fields. [0003] Acrylic rubber has relatively large compression permanent deformation, which is a performance defect as a sealing material. Large deformation may ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08K13/02C08K3/04C08K3/36C08K5/09C08K5/544C08K5/548
CPCC08K3/04C08K3/36C08K5/09C08K5/544C08K5/548C08K13/02C08L33/04
Inventor 李照华唐坤明唐燕
Owner 四川青龙丙烯酸酯橡胶有限公司
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