A modified resin, raw material composition, preparation method, foaming material and application

A technology of raw material composition and modified resin, which is applied in modified resin, raw material composition, preparation, foaming materials and application fields, can solve problems such as unsatisfactory melt rheological properties, and achieve the benefit of large-scale continuous production Production, high melt elasticity, easy handling effect

Active Publication Date: 2021-06-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to overcome the defects in the prior art that the melt rheological properties of the resin whose active group is located at the chain end cannot meet the existing application, and provide a modified resin and its raw material composition, preparation Methods, foaming materials and applications

Method used

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  • A modified resin, raw material composition, preparation method, foaming material and application
  • A modified resin, raw material composition, preparation method, foaming material and application
  • A modified resin, raw material composition, preparation method, foaming material and application

Examples

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Effect test

Embodiment 1

[0080] With the nylon 6 resin of 100 weight parts, the epoxy chain extender of 2.0 weight parts Acrylate polymer and 0.50 parts by weight of antioxidant 1010 are mixed evenly and added to a twin-screw extruder with a rotation speed of 200rpm, melted and blended at 240°C, and the chain-extended nylon 6-1 is obtained by reactive extrusion . The weight-average molecular weight of the chain-extended nylon 6-1 is 32000 g / mol, the molecular weight distribution index is 1.8, and the viscosity is 21000 Pa·s.

Embodiment 2

[0082] The nylon 6 resin of 100 parts by weight, the epoxy chain extender KLE-4370 acrylate polymer of 2.0 parts by weight and the antioxidant 1010 of 0.5 parts by weight, join the twin-screw extruder that rotating speed is 200rpm after mixing uniformly In 240°C, melt blending was carried out, and chain-extended nylon 6-2 was prepared by reactive extrusion. The weight average molecular weight of chain-extended nylon 6-2 is 31000g / mol, the molecular weight distribution index is 1.7, and the viscosity is 20500Pa·s.

Embodiment 3

[0084] With the nylon 6 resin of 100 weight parts, the epoxy chain extender of 2.0 weight parts Acrylate polymer, 3.0 parts by weight of maleic anhydride grafted polypropylene and 0.50 parts by weight of antioxidant 1010 were mixed uniformly and then added to a twin-screw extruder with a rotation speed of 200 rpm, melted and blended at 240 ° C, Long chain branched nylon 6-1 was prepared by reactive extrusion. The weight-average molecular weight of long-chain branched nylon 6-1 is 48000g / mol, the molecular weight distribution index is 2.3, and the viscosity is 75000Pa·s.

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Abstract

The invention discloses a modified resin, raw material composition, preparation method, foaming material and application. The raw material composition includes resin and epoxy polyfunctional monomer, the weight ratio of the resin and the epoxy polyfunctional monomer is 100:(0.5-5), and the resin is that the active group is located at the chain end based linear resin. The present invention can conveniently and efficiently modify the resin whose active group is located at the end of the chain through the reaction of the functional group. The prepared modified resin has high melt strength and can achieve good foaming, film blowing and other processing and molding. Effect.

Description

technical field [0001] The invention relates to a modified resin, raw material composition, preparation method, foaming material and application. Background technique [0002] In recent years, with the vigorous development of my country's transportation, electronics, packaging and other industries, the demand for high-performance lightweight materials has become increasingly urgent. The polymer foam contains a large number of uniformly distributed bubble structures, so it has the advantages of low density, good specific strength, low thermal conductivity, good sound insulation performance and excellent cushioning performance. Supercritical CO 2 Due to the advantages of wide sources, non-combustibility, and environmental friendliness, it is widely used to replace traditional physical foaming agents such as alkanes and freons to prepare polymer foaming materials. In recent years, supercritical CO 2 The auxiliary preparation of polymer foam materials has received extensive a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C08J9/12C08L87/00
CPCC08G81/028C08J9/122C08J2203/06C08J2387/00
Inventor 刘涛徐梦龙葛宇凯姚舜赵玲
Owner EAST CHINA UNIV OF SCI & TECH
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