Polyester composite material, and preparation method, repairing method and application thereof

A technology of polyester composite materials and composite materials, applied in the field of polyester composite materials and their preparation, can solve problems such as low performance retention rate and limited ability of repair methods, and achieve the goal of improving repair performance, improving dispersibility and repairability Effect

Pending Publication Date: 2022-02-25
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing self-healing system mainly repairs the damaged part of the material through the "small" molecular substances containing special functional groups inside the material, but in fact, this repair method has limited capacity and low performance retention rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0031] The sources of raw materials used in Examples and Comparative Examples are as follows:

[0032] PBT: Intrinsic viscosity 0.7 dL / g, 25℃, the test standard is ISO 1628-5, GX111, Yizheng Chemical Fiber;

[0033] PTT: Intrinsic viscosity 0.7~0.9gL / g, 25℃, the test standard is ISO 1628-5, Sorona 3301 NC010, DuPont;

[0034] PET: Intrinsic viscosity 0.79L / g, 25℃, the test standard is ISO 1628-5, PETCR-8818, China Resources Chemical Materials Technology Co., Ltd.;

[0035] PCT: Intrinsic ...

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PUM

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Abstract

The invention discloses a polyester composite material. The polyester composite material comprises, by weight, 100 parts of polyester resin; 0.1 to 10 parts of an irradiation cross-linking agent; 10 to 35 parts of an epoxy polymer; and 100 to 300 ppm of tetrahydrofuran or derivatives thereof. According to the invention, the epoxy polymer and the tetrahydrofuran or the derivatives thereof are added into the irradiation cross-linked polyester composite material system, when the polyester composite material is damaged, the damaged part can be repaired through irradiation cross-linking, and the polyester composite material with good repairability (especially structural damage caused by oxidation and hydrolysis) is obtained.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyester composite material, a preparation method, a repair method and application thereof. Background technique [0002] In the mid-1980s, the US military proposed the concept of material self-healing. In 1994, Carolyn Dry of the University of Illinois proposed adding glass fibers pretreated with acetal polymers in concrete to repair concrete cracks. Since then, the research on material self-healing or self-healing has entered a stage of rapid development. According to the source of the repair agent or the repair method, it can be divided into external aid type and intrinsic type repair. External aid repair is a repair agent introduced outside after the material is damaged, including microcapsule type, hollow fiber type, and microvascular type, usually involving to the coating or protection of the restorative. Intrinsic repair is to use the chemical structure of t...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08K5/1535C08K3/01C08J7/12B33Y70/10
CPCC08L67/02C08J7/123B33Y70/10C08J2367/02C08L23/0884C08K5/1535C08K3/01
Inventor 林洁龙张超张永邱志强叶士兵刘纪庆安朋王飞肖军华付大炯夏建盟
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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