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A kind of acrylate rubber accelerator pre-dispersed masterbatch and preparation method thereof

A technology of pre-dispersed masterbatches and acrylates, applied in the field of rubber additives, can solve problems such as difficulty in mixing into rubber, low vulcanization characteristics, and difficulty in metering, to optimize scorch time, improve vulcanization efficiency, and improve low compression set. and the effect of aging resistance

Active Publication Date: 2018-06-26
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the vulcanization characteristics of acrylic rubbers are low, and highly efficient vulcanization systems are required to replace those vulcanization and peroxidation systems for traditional rubbers
At present, diphenylguanidine, di-o-tolylguanidine and their derivatives are often used as vulcanization accelerators in the vulcanization system of acrylic rubber, but these products may produce potential carcinogens o- toluidine
[0004] In addition, in the existing rubber processing technology, some rubber additives, especially powdered additives and inorganic substances that are difficult to disperse, have problems of being difficult to disperse, mix into rubber, or difficult to measure

Method used

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  • A kind of acrylate rubber accelerator pre-dispersed masterbatch and preparation method thereof
  • A kind of acrylate rubber accelerator pre-dispersed masterbatch and preparation method thereof
  • A kind of acrylate rubber accelerator pre-dispersed masterbatch and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] Acrylic rubber accelerator pre-dispersed masterbatch ACT-70-1, based on 100 parts by total weight, its components and parts by weight are as follows:

[0041] 28 parts of acrylate rubber, 19 parts of zinc diisobutylthiophosphate, 23 parts of 2,5-diazabicyclo[2.2.1]heptane, 24 parts of white carbon black, 5.7 parts of paraffinic process oil, talc Powder 0.3 part.

[0042] The preparation method of above-mentioned acrylate rubber accelerator pre-dispersed master batch, comprises the steps:

[0043] (1) Acrylate rubber was added to the internal mixer according to the above weight parts, and mixed for 6 minutes under the conditions of processing temperature of 50°C and rotor speed of 60r / min;

[0044] (2) Add white carbon black and paraffin-based operating oil to the internal mixer in step (1) according to the above parts by weight, and continue to Mixing for 6 minutes;

[0045](3) Diisobutylzinc thiophosphate and 2,5-diazabicyclo[2.2.1]heptane were added to the internal...

Embodiment 2

[0058] Acrylic rubber accelerator pre-dispersed masterbatch ACT-70-2, based on 100 parts by total weight, its components and parts by weight are as follows:

[0059] 24 parts of ethylene methyl acrylate copolymer, 23 parts of isobutyl octyl bismuth thiophosphate, 23 parts of 3,8-diazabicyclo[3.2.1]octane, 20 parts of calcium carbonate, 9.6 parts of aromatic hydrocarbon operating oil , 0.4 part of starch.

[0060] The preparation method of above-mentioned acrylate rubber accelerator predispersed masterbatch, comprises the steps:

[0061] (1) Add the ethylene acrylate copolymer into the internal mixer according to the above weight parts, and knead for 5 minutes under the condition that the processing temperature is 55°C and the rotor speed is 50r / min;

[0062] (2) Add calcium carbonate and aromatic hydrocarbon operating oil to the internal mixer in step (1) according to the above parts by weight, and continue mixing under the condition that the processing temperature is 60°C an...

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Abstract

The invention discloses acrylic ester rubber accelerator pre-dispersed master colloidal particles and a preparation method thereof. The pre-dispersed master colloidal particles are prepared from, by weight, 20-40 parts of acrylic ester polymer carriers, 10-25 parts of dialkyldithiophosphate, 20-40 parts of diamine compounds, 20-40 parts of inorganic filler and 1-10 parts of operation oil. When the pre-dispersed master colloidal particles are used for vulcanizing acrylic ester rubber, compared with an existing acrylic ester rubber accelerator, the physical properties of vulcanized acrylic ester rubber can be kept, the pre-dispersed master colloidal particles are safe, environmentally friendly and easy to disperse, vulcanization efficiency can be effectively improved, scorching time can be effectively optimized, blooming can be prevented, low-compression deformation of a rubber product can be relieved, and ageing resistance of the rubber product can be improved.

Description

technical field [0001] The invention belongs to the technical field of rubber additives, in particular to an acrylic rubber accelerator pre-dispersed masterbatch and a preparation method thereof. Background technique [0002] Acrylic rubber is an elastomer formed by copolymerization of acrylate or methacrylate as a monomer. Its main chain is a saturated carbon chain and its side groups are polar ester groups. This special chemical structure endows it with many excellent properties. Performance, such as heat resistance, aging resistance, oil resistance, ozone resistance, UV resistance, etc., mechanical properties and processing properties are better than fluororubber and silicone rubber, heat resistance, aging resistance and oil resistance are better than nitrile rubber. Therefore, acrylic rubber is widely used in various high-temperature and oil-resistant environments, and has become a high-performance rubber material that the automobile industry has focused on developing an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L23/08C08K13/02C08K5/372C08K3/36C08K3/34C08K3/26C08J3/22B29B9/06B29C47/92B29C48/92
Inventor 张安将赵永青连千荣徐婷王岚谷建鹏
Owner NINGBO ACTMIX POLYMER
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