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Carbon fiber for polyester resin-based composite material and preparation method thereof

A technology of polyester resin and composite materials, which is applied in the fields of fiber chemical characteristics, rayon chemical post-treatment, textiles and papermaking, etc. It can solve the problems of aging and curing, poor safety and stability of sizing agents, etc., and achieve the reduction of resin consumption and good Effect of wetting and binding ability, good water solubility

Active Publication Date: 2018-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still based on epoxy resin and contains a large amount of organic solvents in the formula. The safety and stability of the prepared sizing agent are poor, and the sizing carbon fiber has a potential aging and curing tendency during long-term storage or high-temperature processing.

Method used

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  • Carbon fiber for polyester resin-based composite material and preparation method thereof
  • Carbon fiber for polyester resin-based composite material and preparation method thereof
  • Carbon fiber for polyester resin-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0036] This embodiment is a method for manufacturing 6K carbon fibers suitable for polyester resin-based composite materials, including polymerization, spinning, pre-oxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, sizing, drying, and winding production processes. The specific process is as follows:

[0037] Step 1: Aggregation.

[0038] Adopt acrylonitrile aqueous phase suspension polymerization technique to carry out polymerization reaction, take acrylonitrile, methyl acrylate, methyl itaconate as polymerization monomer, the weight ratio of acrylonitrile, methyl acrylate, methyl itaconate is 95.4:3.0: 1.6, the feed concentration of total polymerized monomer is 25wt%, add initiator sodium chlorate and sodium metabisulfite simultaneously, sodium chlorate consumption is 0.065wt% with all polymerized monomer total amount, sodium metabisulfite and sodium chlorate mole The ratio is 1.8:1, the polymerization reaction temperature is 60°C,...

Embodiment 5～8

[0053] This example is a method for manufacturing 12K carbon fibers suitable for polyester resin-based composite materials. The specific process includes polymerization, spinning, pre-oxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, sizing, drying, and winding. process. The specific process of this embodiment is the same as that of Examples 1-4, wherein the parameters of polymerization, spinning, pre-oxidation, low-temperature carbonization, high-temperature carbonization, and sizing are different.

[0054] Step 1, aggregation. The polymerization production process is the same as the method described in Step 1 of Examples 1 to 4, wherein the parameters changed in the polymerization production process are the different proportions of comonomers in the ternary aqueous phase polymerization reaction, acrylonitrile, methyl acrylate, itacron The weight ratio of acid methyl ester is 95.0:3.2:1.8, the feeding concentration of total polymeri...

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Abstract

The invention discloses a carbon fiber for a polyester resin-based composite material and a preparation method thereof. The preparation method comprises polymerization, spinning, preoxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, sizing, drying and wire winding collection. In sizing, a polyester resin-based suspension sizing agent is used. The polyesterresin-based suspension sizing agent is composed of polyester resin, a dispersant, a stabilizer and deionized water. The solid of the polyester resin-based suspension sizing agent comprises, by mass,60 to 80% of the polyester, 10 to 20% of the dispersant and 10 to 20% of the stabilizer. The preparation method is simple and is suitable for preparation of the polyester resin-based composite material. The polyester resin-based composite material has good process performances, high interface mechanical properties and excellent toughness.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber preparation, in particular to a carbon fiber for polyester resin-based composite materials and a preparation method thereof. Background technique [0002] Carbon fiber-reinforced resin-based composites are a research hotspot and main development direction in the field of materials in recent years. At present, advanced composite materials are mainly thermosetting resins, such as epoxy resins, phenolic resins, and bismaleimide resins. However, thermosetting matrix resins have disadvantages such as poor toughness, high water absorption, and poor stability under hot and humid conditions, which are the advantages of advanced thermoplastic resins. Polyester resin has good toughness, high versatility, low water absorption, and a wide range of industrial applications. It is a composite material matrix resin with great development prospects. [0003] my country's current carbon fiber production techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F11/14C08L67/00C08K7/06
CPCD01F9/22D01F11/14C08K7/06C08L67/00
Inventor 季春晓黄翔宇曹阿民刘瑞超袁玉红王平张捷吴嵩义宋文迪刘礼华
Owner CHINA PETROLEUM & CHEM CORP