Preparation method of thermosetting shape memory resin with two glass transition temperatures

A technology of glass transition and thermosetting, applied in the field of shape memory functional application of high-performance resin-based composite materials, it can solve the problems of low temperature resistance level, poor mechanical properties of memory resin, and can not be used to achieve high mechanical properties and durability temperature level, high mechanical properties, and the effect of improving mechanical properties

Inactive Publication Date: 2014-04-23
AVIC COMPOSITES
View PDF3 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a shape memory resin with two glass transition temperatures in view of the problems and weaknesses of the current shape memory resin, which have po...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After adding 100 grams of E54 epoxy resin into a three-necked flask equipped with mechanical stirring and a thermometer, after stirring and starting to heat to 150° C., 20 grams of polyether ether ketone was added. Keep at 150°C until the polyether ether ketone is completely dissolved and a transparent solution is formed, then continue to stir and keep at 150°C, and add 35 g of diaminodiphenyl sulfone. After forming a uniform and transparent solution, pour the resin into an open mold, cool down to 110°C, and after vacuum defoaming, solidify according to the curing process of 180°C / 2h+200°C / 2h to make a casting body. After the curing is completed, the temperature is naturally lowered to below 60° C., and the cast body is taken out to obtain a shape memory resin cast body with two glass transition temperatures.

Embodiment 2

[0018] After adding 100 grams of E54 epoxy resin into a three-necked flask equipped with mechanical stirring and a thermometer, after stirring and starting to heat to 150° C., 20 grams of polyether ether ketone was added. Keep at 150°C until the polyether ether ketone is completely dissolved and a transparent solution is formed, then continue to stir and keep at 150°C, and add 35 g of diaminodiphenyl sulfone. After the uniform transparent solution is formed, the resin is poured out and refrigerated for later use as the resin matrix of the shape memory composite material.

Embodiment 3

[0020] After adding 100 grams of E54 epoxy resin into a three-necked flask equipped with mechanical stirring and a thermometer, stir and start heating to 80° C., then add 30 grams of polyamide. Keep at 80°C until the polyamide is completely dissolved and a transparent solution is formed, then continue to stir and keep at 80°C, and add 30 g of diaminodiphenylmethane. After forming a uniform and transparent solution, pour the resin into an open mold, cool down to 60°C, and after vacuum defoaming, solidify according to the curing process of 120°C / 2h to make a casting body. After the curing is completed, the temperature is naturally lowered to below 60° C., and the cast body is taken out to obtain a shape memory resin cast body with two glass transition temperatures.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of shape memory functional applications of high-performance resin-based composite materials and relates to a preparation method of thermosetting shape memory resin with two glass transition temperatures. The thermosetting shape memory resin comprises a thermoplastic polymer, thermosetting resin and a curing agent, wherein the glass transition temperature after the reaction of the thermosetting resin and the curing agent is 10 DEG C-200 DEG C higher than the glass transition temperature of the thermoplastic polymer. The thermosetting shape memory resin with the two glass transition temperatures provided by the invention has not only a shape memory function, but also relatively high mechanical properties and temperature-resistant glass, and can be used as a resin matrix of the shape memory composite material for intelligent morphing aircrafts and aerospace large-scale mechanisms which can be expanded automatically and realize structure-function integration of the fiber-reinforced resin-based composite material.

Description

technical field [0001] The invention belongs to the technical field of shape-memory functional application of high-performance resin-based composite materials, and relates to a preparation method of a thermosetting shape-memory resin with two glass transition temperatures. Background technique [0002] Shape memory resin is a new type of stimulus-sensing functional polymer material, which can change its shape in response to external stimuli. It is a new type of intelligent material. Compared with shape memory alloys, shape memory resins have incomparable advantages, including low density, high shape recovery rate, wide memory recovery temperature, large deformation, good processability and low cost. At present, most of the research on shape memory resins is mainly focused on thermoplastic shape memory resins. Due to their low temperature resistance and mechanical properties, their applications are mainly medical, packaging, construction, etc. that do not require mechanical p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L63/00C08L61/16C08L77/00C08L79/04C08L33/12C08L35/00C08L81/06C08G59/50C08G59/40C08F222/40C08F212/34
Inventor 高军鹏邓华益小苏
Owner AVIC COMPOSITES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap