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Epoxy foamed structural adhesive film capable of resisting 177 DEG C thermal oxidation for 3000 hours and preparation method thereof

A technology of epoxy structural adhesives and structural adhesives, which is applied in the direction of epoxy resin adhesives, adhesives, polyether adhesives, etc.

Active Publication Date: 2021-04-16
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing domestic epoxy foam structural adhesives cannot meet the requirements of long-term use (above 3000h) at 177°C

Method used

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  • Epoxy foamed structural adhesive film capable of resisting 177 DEG C thermal oxidation for 3000 hours and preparation method thereof
  • Epoxy foamed structural adhesive film capable of resisting 177 DEG C thermal oxidation for 3000 hours and preparation method thereof
  • Epoxy foamed structural adhesive film capable of resisting 177 DEG C thermal oxidation for 3000 hours and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A 3000h epoxy foam film resistant to thermal oxygen at 177°C, the epoxy foam structure film consists of 75 parts of epoxy resin, 10 parts of thermoplastic resin, 2 parts of foaming agent, 7 parts The curing agent of part rubber elastomer, 4 parts of inorganic fillers, 1 part of antioxidant and 15 parts is made; The epoxy resin in the described foam film is made of bifunctional Cardo epoxy resin (BFCE), biphenol Aldehyde epoxy resin, bisphenol A epoxy resin and trifunctional epoxy resin (S-510) are composed in a weight ratio of 3:2:1:1. The curing agent in the epoxy foam structure adhesive film is composed of DDS, ether ketone structure aromatic diamine (BADK) and carborane aromatic imide in a weight ratio of 3:2:1. The thermoplastic resin in the epoxy foam structure adhesive film is polyamide-imide (PAI); the rubber elastomer in the described epoxy foam structure adhesive film is core-shell rubber particle MX-125; The inorganic filler in the epoxy foam structure adhesi...

Embodiment 2

[0045] A kind of epoxy foam adhesive film of 3000h under 177 ℃ thermal oxygen condition, described epoxy foam structure adhesive film is made of 85 parts of epoxy resin, 15 parts of thermoplastic resin, 3 parts of blowing agent, 10 parts The curing agent of part rubber elastomer, 6 parts of inorganic fillers, 2 parts of antioxidant and 20 parts is made; , bisphenol novolac epoxy resin, bisphenol A epoxy resin and trifunctional epoxy resin (S-510) in a weight ratio of 5:3:2:1, wherein the bisphenol A epoxy resin is E-20 model.

[0046] The curing agent in the described epoxy foam structure adhesive film is made up of DDS, ether ketone structure aromatic diamine (BADK) and carborane aromatic imide by weight ratio 4:3:1; The epoxy foam The thermoplastic resin in the structural adhesive film is composed of polyamide-imide (PAI), polyetherimide (PEI), polyarylether nitrile ketone (PPENK) and polyether sulfone ketone (PPESK) mixed in equal proportions; The rubber elastic body in t...

Embodiment 3

[0049] The difference between the epoxy foam structure adhesive film of this embodiment and embodiment 2 is that the epoxy foam structure adhesive film of this embodiment consists of 95 parts of epoxy resin, 20 parts of thermoplastic resin, 3 parts of foaming agent, 12 parts It is made of rubber elastomer, 8 parts of inorganic filler, 3 parts of antioxidant and 25 parts of curing agent.

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Abstract

The invention discloses an epoxy foaming structure adhesive film capable of resisting a thermal oxidation condition of 177 DEG C for 3000 hours and a preparation method thereof, relates to a high-temperature-resistant epoxy foaming structure adhesive, and aims to solve the problem that the traditional epoxy foaming structure adhesive cannot meet the long-time use requirement at 177 DEG C; the material is composed of special epoxy resin, a high-temperature-resistant arylamine curing agent, high-temperature-resistant thermoplastic resin, a rubber elastomer, an antioxidant, an inorganic filler and a foaming agent. The preparation method comprises the following steps: introducing the high-temperature-resistant thermoplastic resin into the special epoxy resin by adopting a hot melting method, then mixing the rubber elastomer, the antioxidant, the inorganic filler, the foaming agent and the curing agent, kneading and uniformly mixing the modified resin and the mixed material by virtue of a kneading machine, and finally preparing the epoxy foamed structural adhesive film by virtue of double-roller calendering. The strength of the epoxy foaming adhesive film is slightly reduced, and the epoxy foaming adhesive film has excellent thermal aging resistance; the strength of the adhesive film is excellent, so that the adhesive can meet the adhesion requirements of different structures and can be used for a long time at 177 DEG C.

Description

technical field [0001] The invention relates to a high-temperature-resistant epoxy foaming structural adhesive, in particular to an epoxy foaming structural adhesive film resistant to 177°C thermal oxygen for 3000 hours and a preparation method thereof. Background technique [0002] With the rapid development of aerospace vehicles, there is an urgent need for high temperature resistance and high performance. Epoxy foam structural adhesive is used as the key material for the preparation of high-temperature resistant honeycomb structural parts. It is mainly used for the splicing of honeycomb cores in metal and non-metallic honeycomb sandwich structures and the structural bonding between honeycomb cores and beams, ribs, and partitions. , requiring good mechanical properties and thermal stability at 177°C (3000h). The honeycomb structure prepared by using the foamed structural adhesive is expected to be applied in the manufacture of near-end or far-end temperature-resistant str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J179/08C09J181/06C09J171/10C09J11/04C09J11/06C09J11/08C08J9/10
Inventor 杨海冬王德志张杨曲春艳李洪峰刘长威冯浩宿凯肖万宝赵立伟王海民
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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