Unsaturated acid modified epoxy resin universal carbon fiber sizing agent, and preparation method and application thereof

An epoxy resin, unsaturated technology, applied in the direction of carbon fiber, fiber treatment, fiber type, etc., can solve the problem of only applying a single type of matrix resin, etc., to achieve improved interface binding ability, high reaction conversion rate, and excellent temperature resistance Effect

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the current small tow carbon fiber sizing agent is only suitable for a single type of matrix resin, the purpose of the present invention is to provide a general-purpose carbon fiber sizing agent for unsaturated acid-modified epoxy resins that can be applied to various types of matrix resin systems , preparation method and application

Method used

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  • Unsaturated acid modified epoxy resin universal carbon fiber sizing agent, and preparation method and application thereof
  • Unsaturated acid modified epoxy resin universal carbon fiber sizing agent, and preparation method and application thereof
  • Unsaturated acid modified epoxy resin universal carbon fiber sizing agent, and preparation method and application thereof

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Embodiment

[0044] 1. Preparation of sizing agent

[0045] A quantitative amount of bisphenol A epoxy resin (Shell Company, USA) was placed in a four-necked flask with a mechanical stirring device, heated to 110°C, and dehydrated at a vacuum pressure of 10 to 0.5 mmHg for 2 hours until the system was completely free of bubbles. The temperature is lowered to 70°C, 99.999% high-purity nitrogen is introduced, and the vacuum device is removed. Add quantitative diluent, inorganic polymerization inhibitor, unsaturated acid, quaternary ammonium bromide catalyst (all from Sinopharm Chemical Reagent Co., Ltd.) into the four-neck flask, and control the material temperature to react at 70°C for 7 hours, then The temperature was raised to 120°C for 2.5 hours and the heating was stopped. When the system temperature drops to normal temperature, the stirring is stopped, and the unsaturated acid-modified epoxy resin sizing agent is prepared.

[0046] The varieties and dosages of the bisphenol A epoxy resin,...

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Abstract

The invention discloses an unsaturated acid modified epoxy resin universal carbon fiber sizing agent, and a preparation method and an application thereof. The universal carbon fiber sizing agent comprises the following components: bisphenol A based epoxy resin, aliphatic binary monounsaturated acid with double end groups which are carboxyl, an aromatic active diluent containing one epoxide group in molecule, an inorganic polymerization inhibitor, and a quaternary ammonium bromide catalyst. The sizing agent is suitable for sizing 1K-12K small filament bundle carbon fiber for aerospace, the maximum decomposition peak temperature of reaction products is higher than 325 DEG C, sized carbon fiber and epoxy resin, phenolic resin, bismaleimide resin and other thermosetting resin substrates have good interface bonding strength with good versatility, and especially interface bonding strength of phenolic resin is substantially improved.

Description

Technical field [0001] The invention belongs to the field of carbon fiber sizing agents, and particularly relates to an unsaturated acid-modified epoxy resin universal carbon fiber sizing agent, a preparation method and applications thereof. Background technique [0002] Carbon fiber-reinforced resin-based composite materials have excellent physical and mechanical properties such as light weight, high strength, temperature resistance, and electrical conductivity. Carbon fiber-reinforced resin-based composite materials represented by 1K-12K high-performance small tow carbon fibers have been used in the aerospace field. Has been widely used. In the preparation of aircraft represented by fighter jets and civil aviation passenger aircraft, and spacecraft represented by rocket missile satellites and other fields, carbon fiber reinforced epoxy, phenolic, and bismaleimide-based composite materials have excellent weight reduction. The effect can greatly replace traditional metal materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14D06M15/55D06M101/40
CPCC08G59/1438D06M15/55D06M2101/40D06M2200/40
Inventor 季春晓黄翔宇曹阿民刘瑞超曹志梅张捷王平翁丽萍
Owner CHINA PETROLEUM & CHEM CORP
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