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A kind of hydrogenated nitrile rubber masterbatch and its preparation method and application

A technology for hydrogenated nitrile rubber and carboxyl nitrile rubber is applied in the field of chemical products, and can solve the problems of limited application of hydrogenated products, and achieve the effects of good stretching, cost reduction and simple preparation method.

Active Publication Date: 2021-02-09
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogenation of nitrile latex has been a hot spot in recent years. It has the advantages of low cost, mild conditions, and environmental protection. However, the hydrogenation products of the gel greatly limit the application.

Method used

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  • A kind of hydrogenated nitrile rubber masterbatch and its preparation method and application
  • A kind of hydrogenated nitrile rubber masterbatch and its preparation method and application
  • A kind of hydrogenated nitrile rubber masterbatch and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0031]This embodiment provides a hydrogenated nitrile rubber masterbatch, and the preparation method of the hydrogenated nitrile rubber masterbatch is as follows:

[0032](1) Preparation of hydrogenated nitrile rubber emulsion: Weigh 100g of carboxylated nitrile rubber emulsion (45% by mass of carboxylated nitrile rubber, butadiene segment accounts for about 70%), and add 93.80g of hydrazine hydrate solution (mass fraction) It is 80% hydrazine hydrate); Dissolve 5.82g boric acid in 113.45g hydrogen peroxide solution (30% hydrogen peroxide by mass) and add it dropwise to the mixture of carboxyl nitrile butadiene rubber emulsion and hydrazine hydrate; React at a temperature of 50°C for 8 hours to obtain a hydrogenated nitrile rubber emulsion with a degree of hydrogenation of 95%;

[0033](2) Digest the leather: add 10g of leather waste and 150ml of a 1.5% sodium formate aqueous solution into a 500ml three-necked round bottom flask, stir at 110°C for 5h, condense and reflux, and wash and dry...

Embodiment 2

[0036]This embodiment provides a hydrogenated nitrile rubber masterbatch. The preparation method of the hydrogenated nitrile rubber masterbatch differs from Example 1 only in that 5 g of the leather prepared in step (2) is used in step (3) The fiber is placed in 100 g of the hydrogenated nitrile rubber emulsion prepared in step (1).

Embodiment 3

[0038]This embodiment provides a hydrogenated nitrile rubber masterbatch. The preparation method of the hydrogenated nitrile rubber masterbatch differs from Example 1 only in that 20g of the leather prepared in step (2) is used in step (3) The fiber is placed in 100 g of the hydrogenated nitrile rubber emulsion prepared in step (1).

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Abstract

The invention relates to the field of chemical products, in particular to a masterbatch of hydrogenated nitrile rubber and its preparation method and application. The hydrogenated nitrile butadiene rubber masterbatch comprises leather and hydrogenated nitrile butadiene rubber emulsion, the mass ratio of the leather and the hydrogenated nitrile butadiene rubber emulsion is 1~6:20; the preparation of the hydrogenated nitrile butadiene rubber masterbatch Method: Ultrasonic treatment of leather and hydrogenated nitrile rubber emulsion at 20-80°C, demulsification and sedimentation under the action of demulsifier; hydrogenated nitrile rubber composite material prepared by using the hydrogenated nitrile rubber masterbatch Compared with other hydrogenated nitrile rubbers, the cost is greatly reduced, and at the same time, it has good static mechanical properties such as tensile, tearing, and wear resistance.

Description

Technical field[0001]The invention relates to the field of chemical products, in particular to a hydrogenated nitrile rubber masterbatch and a preparation method and application thereof.Background technique[0002]Nitrile butadiene rubber (NBR) has unsaturated C=C bonds in the molecular chain, and it is easy to oxidize at high temperature to break the molecular chain, which limits its application in many fields. Due to the needs of practical applications, people have hydrogenated nitrile rubber to obtain hydrogenated nitrile rubber (HNBR) with a highly saturated molecular chain. Because the hydrogenation process is selective hydrogenation, HNBR still retains the nitrile group on the molecular chain and has a lot of Good oil resistance. When the degree of hydrogenation reaches more than 90%, the thermal decomposition temperature of hydrogenated nitrile rubber is 30-40°C higher than that of nitrile rubber and exceeds 150°C. Hydrogenated nitrile rubber has good media resistance, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L15/00C08L89/00C08J3/22
CPCC08J3/226C08J2315/00C08J2415/00C08J2489/00
Inventor 岳冬梅谢飞孙昊楠徐蒽云刘显魁张立群
Owner BEIJING UNIV OF CHEM TECH
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