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A kind of butyl rubber/long carbon chain polyamide thermoplastic vulcanizate and preparation method thereof

A technology of thermoplastic vulcanizate and carbon chain polyamide, applied in the field of polymer material processing, can solve problems such as increasing polyamide transfer, and achieve the effects of increasing viscosity, simple and convenient method, and excellent performance.

Active Publication Date: 2017-02-01
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above invention patents all start from the perspective of improving the compatibility between butyl rubber and polyamide, and prepare thermoplastic vulcanizates with excellent mechanical properties and gas barrier properties by adding compatibilizers, but none of them improve the viscosity of the polyamide matrix so that Consideration of increasing the shear force transmitted by polyamide to make the rubber more fully broken

Method used

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  • A kind of butyl rubber/long carbon chain polyamide thermoplastic vulcanizate and preparation method thereof
  • A kind of butyl rubber/long carbon chain polyamide thermoplastic vulcanizate and preparation method thereof
  • A kind of butyl rubber/long carbon chain polyamide thermoplastic vulcanizate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The long carbon chain polyamide selected is polyamide 1010, and the selected rubber is chlorobutyl rubber. First, 100 parts of the dried polyamide 1010 and 0.01 parts of 2,2-(1,4-phenylene) dioxazoline are mixed uniformly at room temperature according to the ratio (mass ratio, the same below), and then 0.5 part ( Mass parts, the same below) Antioxidant hindered phenolic antioxidant 1010 was melt blended in a twin screw at 230°C for 20 minutes to obtain a thickened polyamide 1010; the chlorinated butyl rubber and the thickened polyamide were 50 The parts are mixed on an open mill at 230℃, and at the same time 0.5 parts of antioxidant, 0.5 parts of stearic acid and 30 parts of compatibilizer PIBSA are added and mixed evenly; after cooling, put the rubber and plastic premix in the open mill at room temperature and add 0.5 part Parts of ZnO and 1.0 part of HVA-2 were mixed uniformly; finally, the mixture was dynamically vulcanized in a twin-screw extruder at 230°C and 700 rp...

Embodiment 2

[0040] The long carbon chain polyamide selected is polyamide 12, and the selected rubber is bromobutyl rubber. First, 100 parts of dried polyamide 12 and 2 parts of double epoxy resin E51 are mixed uniformly at room temperature according to the ratio, and then 1 part of antioxidant is added and melted and blended in a twin screw at 170°C for 10 minutes to obtain a thickened polyamide. 12; 75 parts of bromobutyl rubber and 25 parts of tackified polyamide are mixed on an open mill at 170℃ according to the ratio of / , while adding 1 part of antioxidant, 1 part of stearic acid and 15 parts of compatibilizer EEA-g-MAH and mix uniformly; after cooling, put the rubber and plastic premix in a room temperature open mill, add 3.0 parts of ZnO and 4.8 parts of HVA-2 and mix them uniformly; finally, the mixture is extruded at 170℃, 500rpm single screw TPV is prepared by dynamic vulcanization in the machine. TPV was pressed into 2mm thick sheets according to the standard and tested for per...

Embodiment 3

[0042] The long carbon chain polyamide selected is polyamide 1212, and the selected rubber is bromobutyl rubber. First, 100 parts of dried polyamide 1212 and 1 part of double epoxy resin E51 are mixed uniformly at room temperature according to the ratio, and then 1 part of antioxidant is added and melt blended in a twin screw at 180°C for 15 minutes to obtain a thickened polyamide. 1212; Mix 60 parts of bromobutyl rubber and 40 parts of tackified polyamide on an open mill at 180°C according to the ratio, while adding 1 part of antioxidant, 1 part of stearic acid and 10 parts of compatibilizer PP -g-MAH and mix evenly; after cooling, put the rubber-plastic premix in a room temperature open mill, add 3.0 parts of ZnO and 1.5 parts of HVA-2 and mix them evenly; finally dilute the mixture to a rubber / plastic ratio of 25 / 75, Then, TPV was prepared by dynamic vulcanization in a twin-screw extruder at 180°C and 400rpm. TPV was pressed into 2mm thick sheets according to the standard a...

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Abstract

The invention relates to butyl rubber / long carbon chain polyamide thermoplastic vulcanized rubber and a preparation method thereof, first long carbon chain polyamide and a polyamide tackifier are mixed to obtain viscosity-increased long carbon chain polyamide, and then the thermoplastic vulcanized rubber is prepared by dynamic vulcanization of the viscosity-increased long carbon chain polyamide and halogenated butyl rubber. By increasing the viscosity of the long carbon chain polyamide, the transmission efficiency of the shear force in the long carbon chain polyamide can be improved, so that the butyl rubber is easier to break in the melted polyamide, and the high gas barrier thermoplastic vulcanized rubber with a fine structure and excellent performance can be prepared.

Description

[0001] Technical field: [0002] The invention relates to a butyl rubber / long carbon chain polyamide thermoplastic vulcanizate and a preparation method thereof. It belongs to the field of polymer material processing. [0003] Background technique: [0004] Thermoplastic vulcanizate (TPV for short) is a special thermoplastic elastomer obtained by dynamic vulcanization reaction processing technology. A small amount of plastic (such as 20% to 40%) and a large amount of rubber (such as 60% to 80%) are melt blended under high temperature and high shear. The rubber is chemically crosslinked under the action of a crosslinking agent, and at the same time under strong mechanical shear It is broken into a large number of micron-sized particles under the action of shear, and finally formed a special phase structure with a large amount of rubber as the dispersed phase and a small amount of plastic as the continuous phase. The structure determines the performance. The thermoplastic vulcanizate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/28C08L77/00C08L77/02C08L77/06C08J3/24B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08L23/283C08L2201/14C08L2205/03C08L2205/035C08L2205/22C08L77/06C08L23/20C08K13/02C08K5/353C08K5/1345C08K5/09C08K2003/2296C08K5/3415C08L77/02C08L63/00C08L51/06
Inventor 田明姚鹏军张立群田洪池宁南英韩吉彬
Owner BEIJING UNIV OF CHEM TECH