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An environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application

A pre-dispersed masterbatch and accelerator technology, applied in the field of rubber additives, can solve problems such as prone to surface blooming and affect the quality and performance of rubber products, so as to improve compression set and anti-aging performance, and eliminate blooming Phenomenon, eliminate the effect of easy blooming

Active Publication Date: 2022-03-08
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when the comprehensive accelerator is used to pre-disperse the masterbatch particles, due to the high-temperature vulcanization process, the above-mentioned accelerator will decompose to produce insoluble alkaline substances, which will cause surface blooming of rubber products, which will affect the quality and performance of rubber products.

Method used

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  • An environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application
  • An environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application
  • An environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0049] Environmentally friendly comprehensive accelerator pre-dispersed masterbatches include 35 parts of acrylate rubber, 17 parts of zinc pyrithione, 21 parts of DBU, 5 parts of isooctanoic acid, 13 parts of white carbon black, 5.9 parts of dioctyl phthalate, oleic acid 3 parts of amide, 0.1 part of yellow coloring agent.

[0050] (1) Add acrylate rubber and dioctyl phthalate to a pressure-type internal mixer, and mix for 7 minutes at a mixing temperature of 60°C and a rotor speed of 50r / min;

[0051] (2) Add white carbon black and oleic acid amide to the internal mixer, and continue mixing for 7 minutes at a mixing temperature of 60°C and a rotor speed of 50r / min;

[0052] (3) Continue to add zinc pyrithione, DBU, isooctanoic acid, and yellow colorant to the internal mixer, and continue mixing for 8 minutes under the conditions of mixing temperature of 70°C and rotor speed of 65r / min to obtain pre-dispersed Gum;

[0053] (4) Add the pre-dispersed rubber compound in step (...

Embodiment 2

[0070] The environment-friendly comprehensive accelerator pre-dispersed masterbatch includes 24 parts of ethylene-acrylate rubber, 23 parts of molybdenum pyrithione, 23 parts of TBD, 5 parts of stearic acid, 13 parts of calcium carbonate, 9 parts of acetyl tributyl citrate, 3 parts of erucamide. (1) Add ethylene-acrylate rubber and acetyl tributyl citrate to a pressure-type internal mixer, and mix for 8 minutes at a mixing temperature of 100°C and a rotor speed of 100r / min;

[0071] (2) Add calcium carbonate and erucamide to the internal mixer, and continue mixing for 10 minutes at a mixing temperature of 70°C and a rotor speed of 60r / min;

[0072] (3) Continue to add molybdenum pyrithione, 1,5,7-triazabicyclo[4.4.0]dec-5-ene and stearic acid to the internal mixer, and the mixing temperature is 85℃, the rotor Continue mixing for 10 minutes under the condition that the rotating speed is 50r / min, and prepare the pre-dispersed rubber compound;

[0073] (4) Add the pre-dispersed...

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Abstract

The invention relates to the technical field of rubber additives, and discloses an environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application. The masterbatch includes components in parts by weight: 20-40 parts of polymer carrier ; 20-40 parts of pyrithione salt compounds; 10-25 parts of bicyclic amidine compounds; 2-5 parts of organic acid compounds; 10-20 parts of inorganic fillers; 2-10 parts of plasticizers; 2-10 parts of dispersants . The present invention utilizes pyrithione salt compounds, bicyclic amidine compounds, and organic acid compounds. The synergistic effect of the three compounds does not produce potential toxic substances such as nitrosamines during the vulcanization process, and has the advantages of long scorch time, fast vulcanization speed, and anti-oxidation. The characteristics of vulcanization reversion can be used to replace the existing guanidine accelerators, and there is no carcinogenic ingredients such as o-toluidine during use, which is safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of rubber additives, in particular to an environment-friendly comprehensive accelerator pre-dispersed masterbatch and its preparation method and application. Background technique [0002] The vulcanization accelerator of rubber is referred to as accelerator, which can promote the vulcanization of rubber, shorten the vulcanization time, reduce the vulcanization temperature, reduce the amount of vulcanizing agent and improve the physical and mechanical properties of rubber. [0003] Acrylic rubber is a copolymer formed by the copolymerization of acrylate monomers and a small amount of monomers with crosslinking active groups. Its main chain is saturated, and the side groups contain polar ester groups, thus giving polyacrylate Rubber-like rubber has excellent properties such as oxidation resistance, ozone resistance, oil resistance and high temperature resistance, and has been widely used in automobiles, electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L23/08C08K13/04C08K13/02C08K5/378C08K5/09C08K7/26C08K5/12C08K5/20C08K3/26C08K5/11C08J3/22
CPCC08J3/226C08J2433/04C08J2333/04C08J2323/08C08J2423/08C08K13/04C08K13/02C08K5/378C08K5/09C08K7/26C08K5/12C08K5/20C08K2003/265C08K5/11
Inventor 赵永青余宏伟郑文革苏耀卓张利华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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