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A chain extender for aromatic polyester microcellular foaming material

A microcellular foam material and aromatic polyester technology, applied in the field of polymer materials, can solve the problems of low viscosity increase efficiency, low branching degree, and reduce the stiffness of the final microcellular foaming material, so as to improve the degree of branching , high degree of branching, the effect of improving viscosity increasing efficiency

Active Publication Date: 2022-03-29
安徽东远新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these chain extenders currently used also have the following disadvantages: A. These chain extenders often can only react with the carboxyl or hydroxyl groups at the end of aromatic polyesters, and the degree of branching is low, and the viscosity-increasing efficiency is low; B. These chain extenders Agents are composed of flexible molecular chains, which will reduce the stiffness of the final microcellular foam material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Preparation for chain extenders for aromatic polyester microporous foamed materials

[0019] A chain extender for aromatic polyester microporous foaming materials is made of steps as follows.

[0020] A. A proportion of oxidation graphene and bisphenol A epoxy resin, bisphenol F-type epoxy resin, aliphatic epoxy resin is mixed by mass 1: 1: 1: 1;

[0021] B. Add a methylimidazole comprising 1.5% of the total mass of the oxide graphene and epoxy resin;

[0022] C. Raping the mixture to 100 ° C, and the pressure of 5 MPa is applied, and the agitation of 2 h is applied to ensure the sufficient reaction of both.

[0023] D. After the mixing is completed, the cooling is allowed to obtain a chain extender of the oxide oxide as a carrier.

Embodiment 2

[0024] Example 2 Preparation for chain extenders for aromatic polyester microporous foamed materials

[0025] A chain extender for aromatic polyester microporous foaming materials is made of steps as follows.

[0026] A. A proportion of oxidation graphene and bisphenol A epoxy resin, bisphenol F-type epoxy resin is mixed by mass 1: 4: 5;

[0027] B. Add 2,4,6-third (dimethyl) phenol which is 1.5% of the total mass of oxide and epoxy resin;

[0028] C. Reline the mixture to 200 ° C, and the pressure of 0.5 MPa is applied, and the agitation of 6 h is applied to ensure sufficient reaction;

[0029] D. After the mixing is completed, the cooling is allowed to obtain a chain extender of the oxide oxide as a carrier.

Embodiment 3

[0030] Example 3 Preparation for chain extenders for aromatic polyester microporous foamed materials

[0031] A chain extender for aromatic polyester microporous foaming materials is made of steps as follows.

[0032] A. A proportion of oxidized graphene and bisphenol A-type epoxy resin is mixed by mass 1: 5;

[0033] B. Add addition to dimethylbenzylamine from the total mass of oxide and epoxy resin;

[0034] C. Reline the mixture to 150 ° C, and the pressure of 3 MPa is applied, and the agitation of 3 hours is applied to ensure the sufficient reaction of both.

[0035] D. After the mixing is completed, the cooling is allowed to obtain a chain extender of the oxide oxide as a carrier.

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PUM

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Abstract

A chain extender used in aromatic polyester microcellular foaming materials is a chain extender with graphene oxide as a carrier. It is prepared by the following method, A. mixing graphene oxide and epoxy resin in a ratio of 1:3 to 1:9 by mass; B. adding 1 to 1.5% of the total mass of graphene oxide and epoxy resin to promote C. Raise the mixture to 100-200 ° C, and apply a pressure of 0.5-5 MPa, and stir for 2-6 hours to ensure that the two fully react; D. After the stirring is completed, let it stand for cooling to obtain graphene oxide as Carrier chain extender. The invention provides a chain extender which can greatly increase the melt viscosity of the aromatic polyester resin and improve the rigidity of the final microcellular foam material.

Description

Technical field [0001] The present invention relates to the field of polymer materials, and more particularly to a chain extender for an aromatic polyester microporous foamed material. Background technique [0002] The aromatic polyester microporous foam material is made by mixing a foamable aromatic polyester resin with a foaming agent, a nucleating agent, an antioxidant, or the like, by extruding foam or molding foaming, etc. . With its excellent mechanical properties, heat resistance and barrier properties, aromatic polyester microporous foam materials have a wide range of application prospects in food packaging, automotive space and rail transit. At the same time, its raw materials are widely low, the production process is automatically continuous, and the finished product can be recycled, and it is currently gradually become the focus of market research. [0003] Suitable foamable aromatic polyester resins are the key to preparing high performance aromatic polyester micropor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/00C08L67/00
CPCC08J9/0061C08J9/0066C08J2367/00C08J2463/00C08K3/042
Inventor 曹也文程振朔何亚东信春玲李东生王文治
Owner 安徽东远新材料有限公司