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Low-compression permanent-deformation carboxylic acid type acrylate rubber, and preparation method thereof

An acrylate, permanent deformation technology, applied in the field of synthetic rubber compounding and processing, can solve the problems of increasing the hardness and tensile strength of the rubber compound, cannot reduce the compression set of the rubber compound, and the effect of the compression set is not obvious. Coupling strength, improving compression set performance, and the effect of good compressive capacity

Active Publication Date: 2019-10-15
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

[0014] 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.
[0015] 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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  • Low-compression permanent-deformation carboxylic acid type acrylate rubber, and preparation method thereof
  • Low-compression permanent-deformation carboxylic acid type acrylate rubber, and preparation method thereof

Examples

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preparation example Construction

[0033] A preparation method of low compression set carboxylic acid type acrylate rubber, comprising the following steps:

[0034] Carboxylic acid type acrylate rubber, fast extruded carbon black, precipitated white carbon black, processing aid and anti-aging agent are added into an open mill for the first mixing to obtain the first mixed rubber. The specific steps of mixing for the first time in the embodiment of the present invention are: (1) weighing carboxylic acid type acrylate rubber, fast extruded carbon black, precipitated white carbon black, processing aid and anti-aging agent according to the proportion; (2) ) Open the mill, press the stearic acid on the roller, then put the carboxylic acid type 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 silica, and anti-aging agent and evenly add them to the roller for mixing. When add...

Embodiment 1

[0039] A preparation method of low compression set carboxylic acid type acrylate rubber, comprising the following steps:

[0040] (1) Weigh the following raw materials by weight: acrylate rubber ACM-120: 100 parts; fast extrusion carbon black N-550: 25 parts; precipitated white carbon black: 25 parts; silane coupling agent Si-69: 2 anti-aging agent TK-100: 5 parts; stearic acid: 2 parts; vulcanizing agent No. 1: 1 part; accelerator DOTG: 2 parts.

[0041] (2) Open the open mill, press stearic acid on the roller, then put carboxylic acid type acrylate rubber into the roller, make the rubber wrap the roller, adjust the roller distance, and keep a small amount of glue on the roller;

[0042] (3) Evenly add quick-extruded carbon black, precipitated white carbon black, and anti-aging agent into the roller for mixing. When adding half of the quick-extruded carbon black and precipitated white carbon black, perform 3 / 4 cutting knife 1 on each side 2 times, and then add the remaining ...

Embodiment 2

[0055] A preparation method of low compression set carboxylic acid type acrylate rubber, comprising the following steps:

[0056] (1) Weigh the following raw materials by weight: acrylate rubber ACM-220: 100 parts; fast extrusion carbon black N-550: 25 parts; precipitated white carbon black 25 parts, silane coupling agent Si-69: 2 parts ; Antiaging agent TK-100: 5 parts; Stearic acid: 2 parts; No. 1 vulcanizing agent 1 part; Accelerator DOTG 2 parts;

[0057] 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 permanent-deformation carboxylic acid type acrylate rubber, and a preparation method thereof, and belongs to the technical field of synthesis rubber blending and processing. The low-compression permanent-deformation carboxylic acid type acrylate rubber comprises, by weight, 100 parts of carboxylic acid type acrylate rubber, 10 to 50 parts of quick extrusioncarbon black, 10 to 50 parts of precipitated white carbon black, 1 to 5 parts of a silane coupling agent, 1 to 3 parts of curing agent No. 1, 1 to 4 parts of an accelerator, 1 to 3 parts of a processing aid, and 2 to 5 parts of an anti-aging agent, wherein the mass ratio of the quick extrusion carbon black to the precipitated white carbon black is controlled to be 1:1. The low-compression permanent-deformation carboxylic acid type acrylate rubber possesses excellent low-compression permanent-deformation performance, excellent heat stability, high hardness, and high stretching strength. According to the preparation method, the silane coupling agent is added when the temperature of a blended rubber is 50 to 70 DEG C; the preparation method is simple; and the prepared carboxylic acid type acrylate rubber is excellent in performance.

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 carboxylic acid 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 Applications(China)
IPC IPC(8): C08L33/04C08K13/06C08K9/06C08K3/04C08K3/36C08K5/09C08K5/205C08K5/31
CPCC08K3/04C08K3/36C08K5/09C08K5/205C08K5/31C08K9/06C08K13/06C08L2201/08C08L33/04
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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