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Method for preparing brominated butyl rubber/polyethylene barrier functional compound membrane through wet method

A technology of bromobutylene rubber and polyethylene, which is applied in the field of rubber and plastic blending, can solve the problems of slow vulcanization speed, poor air tightness, poor adhesion, etc., achieve fast vulcanization speed, improve gas barrier performance and adhesive performance Improved effect

Active Publication Date: 2019-09-17
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Butyl rubber also has disadvantages, ①The vulcanization speed is slow, and it needs high temperature or long time vulcanization
② Butyl rubber has poor adhesion to other rubbers, and the adhesion is low
③ Poor compatibility with other rubbers
[0005] Polyethylene (PE) has a simple structure, is non-toxic and odorless, has good transparency and comprehensive performance, and is widely used in the packaging field, but its airtightness is not good

Method used

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  • Method for preparing brominated butyl rubber/polyethylene barrier functional compound membrane through wet method
  • Method for preparing brominated butyl rubber/polyethylene barrier functional compound membrane through wet method
  • Method for preparing brominated butyl rubber/polyethylene barrier functional compound membrane through wet method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare BIIR / PE mixed solution according to BIIR and PE mass ratio of 6:4, add a certain amount of xylene solvent, put it into a magnetic stirring oil bath, heat up to 120 °C while stirring, add 1wt% antioxidant 1010, wait After the blend is fully dissolved, lower the temperature to 80°C and add a compound vulcanizing agent, stir well, form a film, perform vulcanization treatment at a temperature of 80-120°C, dry to form a film, and perform characterization tests on various properties of the film.

[0036] The composite vulcanizing agent is prepared by mixing zinc oxide, hard acid, paraffin oil, and accelerator TMTD in a mass ratio of 5:5:1:7, and grinding in a high-speed grinder for two hours.

Embodiment 2

[0038]In order to improve the barrier properties and mechanical properties of the blended composite film, modified graphene oxide and a small amount of ultra-high molecular weight polyethylene were used, respectively. The preparation process of the composite membrane is the same as above.

[0039] S1. Graphene oxide modification treatment

[0040] Add graphene oxide GO to deionized water for ultrasonic treatment until graphene oxide is uniformly dispersed to obtain liquid A; add octadecylamine DA to absolute ethanol and magnetically stir until completely dissolved to obtain liquid B; Solution and B solution were mixed together and stirred for more than 24 hours, and the mass ratio of GO to DA was 1:3. Under this ratio, the carboxyl groups in graphene oxide can be completely replaced by amino groups. The stirred DA-GO solution was vacuum filtered, washed several times with absolute ethanol, and finally dried at 60°C for 24 hours to obtain modified graphene oxide.

[0041] S2...

Embodiment 3

[0046] The difference between this example and Example 2 is that BIIR / PE is prepared as 7:3 mixed solution of BIIR / PE.

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Abstract

The invention belongs to the technical field of rubber-plastic blending, and particularly relates to a method for preparing a brominated butyl rubber / polyethylene barrier functional compound membrane through a wet method. According to the method for preparing the brominated butyl rubber / polyethylene barrier functional compound membrane through the wet method, a method for blending liquid brominated butyl rubber and polyethylene is adopted for preparing the barrier functional compound membrane, chlorinated polyethylene is adopted as a compatibilizer, modified graphene is adopted as barrier filler, ultrahigh-molecular-weight polyethylene is adopted as an enhancing agent, and the compound membrane is subjected to modification treatment, so that the barrier property and the mechanical performance of the compound film are improved. Rubber-plastic blending is used for preparing the functional compound material, thus the polyethylene membrane is endowed with good barrier performance, the application fields of the brominated butyl rubber and the polyethylene are expanded, the advantages of the brominated butyl rubber and the polyethylene are fused, the performance of the brominated butyl rubber and the polyethylene supplements each other, a novel variety and novel application of functional polymer compound materials are added, and the method for preparing the brominated butyl rubber / polyethylene barrier functional compound membrane through the wet method has important theory and practice significance.

Description

technical field [0001] The invention belongs to the technical field of rubber-plastic blending, in particular to a method for preparing a bromobutyl rubber / polyethylene barrier functional composite film by a wet method. Background technique [0002] Butyl rubber is a linear polymer with isobutylene as the main body and a small amount of isoprene combined end to end. On the main chain of the butyl rubber molecule, every other methine group has two methyl groups surrounding the main chain in a helical manner. Shaped arrangement, resulting in a large steric hindrance, so that the molecular chain flexibility of butyl rubber is relatively poor. Therefore, the airtightness of butyl rubber is excellent, and the current main application fields are automobile tires and pharmaceutical bottle stoppers. Butyl rubber also has disadvantages, ①The vulcanization speed is slow, and it needs high temperature or long time vulcanization. ② Butyl rubber has poor adhesion to other rubbers, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L23/06C08K3/22C08K5/09C08K5/40C08K9/04C08K3/04C08J5/18
CPCC08J5/18C08J2323/28C08J2423/06C08K2003/2296C08K5/09C08K5/40C08K9/04C08K3/042
Inventor 陈茹郑来久苗亮远高清华
Owner DALIAN POLYTECHNIC UNIVERSITY
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