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Poly(itaconate/isoprene)bio-based elastomer/layered silicate nanocomposite material preparation method

A nanocomposite material and layered silicate technology, which is applied in the field of preparation of polybio-based elastomer/layered silicate nanocomposite materials, can solve the problems of high gas barrier properties

Active Publication Date: 2014-12-10
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report at home and abroad on the preparation of a high gas barrier nanocomposite material by combining kampurum gum with the same environmentally friendly layered silicate through emulsion co-precipitation and other composite methods

Method used

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  • Poly(itaconate/isoprene)bio-based elastomer/layered silicate nanocomposite material preparation method
  • Poly(itaconate/isoprene)bio-based elastomer/layered silicate nanocomposite material preparation method
  • Poly(itaconate/isoprene)bio-based elastomer/layered silicate nanocomposite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] Mix 40 grams of rectorite with 1960 grams of deionized water to prepare a rectorite aqueous suspension with a mass fraction of 2%. The suspension is placed on a high-speed mixer at a speed of 800 rpm and stirred at a constant speed for 6 hours. After the stirring was completed, the solution was allowed to stand for 20 hours. After standing still, take the mass as 48.56g (m 0 ) watch glass, put a small amount of suspension in the watch glass, weigh 49.90g (m 2 ) into a fast moisture evaporator and evaporated to dryness to obtain a mass of 48.58g (m 1 ) According to the formula (1), the solid content of the rectorite suspension is calculated as 1.49%. Prepare a suspension / latex mixture of 20phr rectorite according to the solid content. The mixed solution was then stirred for 20 minutes at a speed of 480 rpm on a high-speed mixer. Calcium chloride solution equal to the volume of the suspension with a pH of 5 and equal to the volume of the suspension is prepared, the re...

Embodiment example 2

[0029] Mix 40 grams of rectorite with 1960 grams of deionized water to prepare a rectorite aqueous suspension with a mass fraction of 2%. The suspension is placed on a high-speed mixer at a speed of 800 rpm and stirred at a constant speed for 6 hours. After the stirring was completed, the solution was allowed to stand for 24 hours. After standing still, take a small amount of the suspension in a watch glass, put it into a fast water evaporator and evaporate to dryness, and calculate the solid content of the rectorite suspension. Prepare a suspension / latex mixture of 50phr rectorite according to the solid content. The mixed solution was then stirred for 20 minutes at a speed of 480 rpm on a high-speed mixer. Calcium chloride solution with pH 6 and equal volume to the suspension is prepared, and the rectorite / latex mixture is slowly added and stirred, and after standing for 1 hour, the flocculation product is washed with deionized water to nearly neutral. Dry the gel sample o...

Embodiment example 3

[0032] Mix 40 grams of rectorite with 1960 grams of deionized water to prepare a rectorite water suspension with a mass fraction of 2%. The suspension is placed on a high-speed mixer at a speed of 800 rpm and stirred at a constant speed for 7 hours. After the stirring was completed, the solution was allowed to stand for 20 hours. After standing still, take a small amount of the suspension in a watch glass, put it into a fast water evaporator and evaporate to dryness, and calculate the solid content of the rectorite suspension. Prepare a suspension / latex mixture of 60phr rectorite according to the solid content. Then the mixture was stirred for 30 minutes at a speed of 480 rpm on a high-speed mixer. Prepare a hydrochloric acid solution with a pH of 1 and the same volume as the suspension, slowly add the rectorite / latex mixture and stir, and after standing for 1 hour, wash the flocculation product with deionized water until it is nearly neutral. Dry the gel sample obtained by ...

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Abstract

The invention relates to a poly(itaconate / isoprene)bio-based elastomer / layered silicate nanocomposite material preparation method. A poly(itaconate / isoprene)bio-based elastomer / layered silicate nanocomposite material is obtained through wet compounding of a poly(itaconate / isoprene)bio-based elastomer and layered silicate, and chemical cross-linking. The layered silicate / poly(itaconate / isoprene)bio-based elastomer nanocomposite material is a novel environmentally-friendly composite material, and the filling of layered silicate can reduce the rubber cost, so the composite material is an airtight green rubber product having a very good prospect. The material prepared in the invention has an environmental protection property and a gas barrier performance, and the gas permeation coefficient of the poly(itaconate / isoprene)bio-based elastomer / layered silicate nanocomposite material is 1.7-10.4*10<-17>m<2>s<-1>Pa<-1>. 20-50 parts by mass of combined reinforcing agents comprising white carbon black (SiO2) or carbon black, and the like can be added to improve the strength of the composite material.

Description

technical field [0001] The invention relates to a preparation method of poly(itaconate / isoprene) bio-based elastomer / phyllosilicate nanocomposite material, in particular to a preparation method of bioengineering rubber with high gas barrier property. Background technique [0002] The rubber industry occupies a pivotal position in the national economy, and a large number of applications of rubber are required in the fields of military, medical and people's livelihood. The special molecular structure of rubber determines that it has high elasticity but lacks strength. It must be reinforced by small molecule fillers to obtain rubber products with practical value. Carbon black and silica are the most widely used reinforcing agents in rubber, which can significantly improve the modulus and damage resistance of vulcanized rubber. However, with the rapid development of the rubber industry, their limitations are gradually revealed: carbon black relies on the petrochemical industry,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08L35/02C08K7/00C08K3/34C08K3/06
Inventor 张立群姚慧王润国周鑫鑫雷巍巍乔荷花国智约瑟夫.库里格
Owner BEIJING UNIV OF CHEM TECH