High-performance modified carboxylated nitrile rubber material and preparation method thereof

A high-performance technology of carboxylated nitrile rubber, which is applied in the field of high-performance modified carboxylated nitrile rubber materials and its preparation, can solve the problems of high cost and large amount of modified raw materials, and achieve high temperature oil resistance and low compression set performance , high comprehensive mechanical properties, no harm to the environment and human body

Inactive Publication Date: 2015-12-02
合肥市再德高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the modification of existing methods, the comprehensive performance of XNBR is mainly improved by means of modification in the synthesis stage, multiple copolymerization, blending with different rubbers in the processing stage, combination of rubber and plastic, and adding additives, etc., and great results have been achieved. , and a series of high-performance new varieties have emerged one after another, but the amount of modified raw materials is large and the cost is relatively high

Method used

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  • High-performance modified carboxylated nitrile rubber material and preparation method thereof
  • High-performance modified carboxylated nitrile rubber material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] A high-performance modified carboxylated nitrile rubber material is characterized in that it comprises the following raw materials in parts by weight: 90 parts of modified carboxylated nitrile rubber, 30 parts of natural rubber, 20 parts of carbon black N-77420 parts, and 10 parts of carbon black N-99010 parts , 10 parts of antimony trioxide, 3 parts of zinc oxide, 3 parts of stearic acid, 1 part of sulfur, 3 parts of tetrabenzylthiuram disulfide, 1 part of N-tert-butyl-2-benzothiazole sulfenamide , 6 parts of dioctyl sebacate and 4 parts of auxiliary agent; Said auxiliary agent is made up of hexamethylenetetramine, magnesium oxide and lubricant that the mass proportion is 7:1:0.5;

[0028] The preparation of the modified carboxylated nitrile rubber includes: adding 55% butadiene, 34% acrylonitrile, 2.0% alkylbenzenesulfonate, 0.3% persulfate and propylbenzene to the vacuum reactor by weight percentage 0.01%, carry out free radical emulsion polymerization reaction in wa...

Embodiment 2

[0035] A high-performance modified carboxylated nitrile rubber material is characterized in that it comprises the following raw materials in parts by weight: 100 parts of modified carboxylated nitrile rubber, 25 parts of natural rubber, 30 parts of carbon black N-77430 parts, and 7 parts of carbon black N-9907 , 8 parts of antimony trioxide, 3.5 parts of zinc oxide, 2.5 parts of stearic acid, 1.5 parts of sulfur, 2 parts of tetrabenzylthiuram disulfide, 1.5 parts of N-tert-butyl-2-benzothiazole sulfenamide , 5 parts of dioctyl sebacate and 6 parts of auxiliary agent; Said auxiliary agent is made up of hexamethylenetetramine, magnesium oxide and lubricant that the mass proportion is 6:2:0.3;

[0036] The preparation of the modified carboxylated nitrile rubber comprises: adding 60% of butadiene, 30% of acrylonitrile, 2.5% of alkylbenzenesulfonate, 0.25% of persulfate and propylbenzene to the vacuum reactor by weight percentage 0.01%, carry out free radical emulsion polymerizatio...

Embodiment 3

[0043] A high-performance modified carboxylated nitrile rubber material is characterized in that it comprises the following raw materials in parts by weight: 120 parts of modified carboxylated nitrile rubber, 20 parts of natural rubber, 77427 parts of carbon black, 9908 parts of carbon black , 6 parts of antimony trioxide, 4 parts of zinc oxide, 2 parts of stearic acid, 2 parts of sulfur, 1.5 parts of tetrabenzylthiuram disulfide, 2 parts of N-tert-butyl-2-benzothiazole sulfenamide , 4 parts of dioctyl sebacate and 5 parts of auxiliary agent; Said auxiliary agent is made up of hexamethylenetetramine, magnesium oxide and lubricant that the mass proportion is 5.5:1.5:0.4;

[0044] The preparation of the modified carboxylated nitrile rubber comprises: adding 61% of butadiene, 26% of acrylonitrile, 2.75% of alkylbenzenesulfonate, 0.23% of persulfate and propylbenzene to the vacuum reactor by weight percentage 0.02%, carry out free radical emulsion polymerization reaction in water ...

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Abstract

The invention discloses a high-performance modified carboxylated nitrile rubber material. The material comprises the following raw materials by weight: 90 to 130 parts of modified carboxylated nitrile rubber, 15 to 30 parts of natural rubber, 20 to 40 parts of carbon black N-774, 5 to 10 parts of carbon black N-990, 5 to 10 parts of antimony trioxide, 3 to 5 parts of zinc oxide, 1 to 3 parts of stearic acid, 1 to 3 parts of sulfur, 0.5 to 3 parts of tetrabenzylthiuramdisulfide, 1 to 3 parts of N-tert-butyl-2-benzothiazole sulfonamide, 2 to 6 parts of dioctyl sebacate and 4 to 8 parts of an auxiliary. The modified carboxylated nitrile rubber blending material provided by the invention has higher comprehensive mechanical property, and heat and ageing resistant properties, high-temperature and oil resistant properties and low-compression and permanent-deformation properties.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a high-performance modified carboxylated nitrile rubber material and a preparation method thereof. Background technique [0002] Carboxylated nitrile rubber (XNBR) is a random copolymer prepared by emulsion polymerization of butadiene, acrylonitrile and organic acid three monomers initiated by free radicals. XNBR can not only use sulfur accelerator or peroxide curing system to carry out covalent crosslinking at the double bond position like ordinary NBR, but also react with divalent metal oxides or their salts due to the introduction of reactive carboxyl groups. Formation of ionic crosslinks. The ionic aggregates formed by ionic bonds are equivalent to physical crosslinking points in the polymer matrix, and have obvious reinforcement and hardening effects on the entire macromolecular network. Due to the advantages of XNBR in terms of cost performance, oil resistance, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L13/00C08L7/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K3/40C08K5/47C08K5/11C08C19/22C08F236/12
Inventor 邱再明
Owner 合肥市再德高分子材料有限公司
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