Carbon fiber sizing agent

A carbon fiber and slurry technology, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of performance degradation of composite materials, achieve the effects of improved mechanical properties, simple preparation method, and improved interlayer shear strength

Active Publication Date: 2013-02-06
ZHONGFU SHENYING CARBON FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the carbon fiber sizing agents based on epoxy resin film-forming agents are the most researched, such as US4751258, US4420512, and US5688554. However, durin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, a carbon fiber sizing agent, is characterized in that it is made of the following materials by weight ratio: phenolic resin 5~25, compound resin 1~5, antistatic agent 0.01~5, solvent 100, wherein Described phenolic resin is thermoplastic phenolic resin or modified phenolic resin; Described composite resin is thermoplastic resin or thermosetting resin,

[0017] The preparation steps are as follows: first mix the phenolic resin and compound resin, add 10-20% of the total amount of solvent to dissolve it in the solvent, stir at room temperature to form a homogeneous solution; then add anti-oxidant to the homogeneous solution Static agent, stirring to dissolve, adding the remaining solvent, stirring to make it into a solution, can be obtained.

[0018] The modified phenolic resin is polyacryl acetal modified phenolic resin or polyamide modified phenolic resin; the thermoplastic resin is polyamide resin, polyvinyl alcohol resin, polyamic acid resin or polyamide...

Embodiment 2

[0019] Embodiment 2, a kind of carbon fiber sizing agent, it is made by thermoplastic phenolic resin, polyvinyl alcohol resin, polyether ester amide and acetone, and the weight ratio is 5:1:0.5:100, when making, the weight fraction is 5 parts of thermoplastic phenolic resin are mixed with 1 part of polyvinyl alcohol resin by weight fraction, first add 30 parts of solvent acetone, stir at room temperature to make it fully dissolve, continue stirring and add antistatic agent polyether ester amide (polyether ester amide ( PEEA), after mixing, add the remaining 70 parts of acetone, and mix uniformly to prepare the carbon fiber sizing agent.

[0020] The weight fraction of carbon fiber sizing with this sizing agent is 1.8%, and the carbon fiber is subjected to twin-screw reaction extrusion to prepare carbon fiber reinforced polyoxymethylene (POM) resin-based composite material, which is granulated after being fully stirred by a high-speed mixer, and injected by an injection molding ...

Embodiment 3

[0021] Embodiment 3, a kind of carbon fiber sizing agent, it is made by thermoplastic phenolic resin, polyamide resin, polyether ester amide and acetone, and the weight ratio is 5:1.5:0.4:100, when making, the weight fraction is 4 Mix 1.5 parts of thermoplastic phenolic resin with 1.5 parts by weight of polyamide resin, first add 60 parts of solvent acetone, stir at room temperature to fully dissolve it, continue stirring and add 0.4 parts by weight of antistatic agent polyether ester amide (PEEA) , after mixing, add the remaining 40 parts of acetone, and mix uniformly to prepare a carbon fiber sizing agent.

[0022] The weight fraction of carbon fiber after sizing with this sizing agent is 1.6%. The carbon fiber is subjected to twin-screw reaction extrusion to prepare carbon fiber reinforced PA66 resin-based composite material. The performance test results are as follows: tensile strength 151Mpa, elastic modulus 9155Mpa, bending strength 199.8Mpa, bending modulus 7755.5Mpa, i...

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Abstract

The invention discloses a carbon fiber sizing agent which is prepared from the following materials in parts by weight: 5-25 parts of phenolic resin, 1-5 parts of blend resin, 0.01-5 parts of antistatic agent and 100 parts of solvent, wherein the phenolic resin is thermoplastic phenolic resin or modified phenolic resin, and the blend resin is thermoplastic resin or thermosetting resin. The carbon fiber sizing agent is prepared through the following steps of: firstly, uniformly mixing the phenolic resin and the blend resin, adding a solvent accounting for 10-20% of the total amount of the solvent, enabling the resin to be dissolved in the solvent, and stirring the obtained mixture into a homogeneous solution at room temperature; and then, adding the antistatic agent into the homogeneous solution, stirring the obtained mixture so as to dissolve the antistatic agent, adding the rest of the solvent, and mixing the obtained product so as to obtain an integral solution, thereby obtaining the carbon fiber sizing agent. The carbon fiber sizing agent disclosed by the invention can be compatible with thermoplastic matrix resin better; the matrix resin can fully wet carbon fibers, thereby directly achieving a stress transfer effect on the fibers and the matrix; and compared with an epoxy resin sizing agent, the interlayer shear strength of a composite material of the carbon fiber sizing agent is increased by 15-20%.

Description

technical field [0001] The invention relates to a carbon fiber sizing agent. Background technique [0002] Carbon fiber / resin-based composite material has a series of excellent properties such as high specific strength, high specific modulus, corrosion resistance, ablation resistance, fatigue resistance and dimensional stability. It is one of the representatives of carbon fiber composite materials and has been widely used in textile machinery, industry and other fields. As an important matrix material for resin-based composite materials, epoxy resin has a series of advantages such as good adhesion, heat resistance, chemical corrosion resistance, high strength and convenient processing, but its cured product has poor adhesion to fibers and is easy to process. Cracking, it is difficult to meet the growing engineering technology requirements. In order to meet the needs of the market, more and more attention has been paid to carbon fiber composites based on thermoplastic resi...

Claims

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Application Information

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IPC IPC(8): D06M15/41D06M15/59D06M15/333D06M15/51D06M15/55D06M101/40
Inventor 张国良李艳华陈秋飞席玉松
Owner ZHONGFU SHENYING CARBON FIBER
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