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Carbon fiber reinforced PC resin composite material and preparation method and application thereof

A resin composite material, carbon fiber technology

Inactive Publication Date: 2021-08-13
重庆可益荧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the special structure of polycarbonate resin itself, the mechanical properties of aliphatic and aliphatic-aromatic polycarbonate are low, and they have poor processing fluidity, which makes their processing difficult. Relatively sensitive, prone to stress cracking, poor wear resistance, poor scratch resistance, and yellowing when exposed to ultraviolet rays for a long time, so only aromatic polycarbonate has been industrialized, which limits its application in engineering plastics. In addition, polycarbonate resin needs to be blended with other resins or materials

Method used

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  • Carbon fiber reinforced PC resin composite material and preparation method and application thereof
  • Carbon fiber reinforced PC resin composite material and preparation method and application thereof
  • Carbon fiber reinforced PC resin composite material and preparation method and application thereof

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preparation example Construction

[0069] The invention provides a kind of preparation method of carbon fiber reinforced PC resin composite material, comprises the following steps:

[0070] 1) After mixing PC resin, compatibilizer, composite antioxidant, composite flame retardant and auxiliary agent, a mixed resin base material is obtained;

[0071] 2) extruding and granulating the mixed resin base material, acidified modified carbon fiber and lubricant obtained in the above steps to obtain a carbon fiber reinforced PC resin composite material.

[0072] In the invention, firstly, after mixing PC resin, compatibilizer, composite antioxidant, composite flame retardant and auxiliary agent, a mixed resin base material is obtained.

[0073] In the present invention, the mixed resin base material obtained in the above steps, the acidified modified carbon fiber and the lubricant are extruded and granulated to obtain a carbon fiber reinforced PC resin composite material.

[0074] In the present invention, the acidifie...

Embodiment 1

[0092] (1) Carbon fiber acidification treatment: put CF in a glass container, add a certain amount of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2:1) mixture, 60 ° C ultrasonic treatment for a period of time; then naturally cool the reaction solution to room temperature, Rinse CF several times with deionized water and dry to obtain acidified CF;

[0093] (2) 70% of PC, 0.5% of compatibilizer, 0.5% of composite antioxidant, 4% of composite flame retardant and 10% of additives are mixed uniformly to obtain a mixed resin base;

[0094](3) The modified carbon fiber after 10% acidification, 5% titanate coupling agent and the mixed resin base material in step (2) are added to the twin-screw extruder, through the twin-screw extruder at 220 Melt blending at ~250°C, extrusion and granulation to obtain carbon fiber composite material granules. During the extrusion process, the screw speed is 120r / min, the feeding speed is 15r / min, and the carbon fiber feeding...

Embodiment 2

[0103] (1) Carbon fiber acidification treatment: put CF in a glass container, add a certain amount of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2:1) mixture, 60 ° C ultrasonic treatment for a period of time; then naturally cool the reaction solution to room temperature, Rinse CF several times with deionized water and dry to obtain acidified CF;

[0104] (2) 60% of PC, 0.5% of compatibilizer, 0.5% of composite antioxidant, 4% of composite flame retardant and 10% of additives are mixed uniformly to obtain a mixed resin base;

[0105] (3) The modified carbon fiber after 20% acidification, 5% titanate coupling agent and the mixed resin base material in step (2) are added to the twin-screw extruder, through the twin-screw extruder at 220 Melt blending at ~250°C, extrusion and granulation to obtain carbon fiber composite material granules. During the extrusion process, the screw speed is 120r / min, the feeding speed is 15r / min, and the carbon fiber feedin...

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Abstract

The invention provides a carbon fiber reinforced PC resin composite material. The PC resin composite material contains acidified and modified carbon fibers; and the acidified and modified carbon fibers are bonded in a matrix of the PC resin composite material. According to the invention, the carbon fibers subjected to specific acidizing treatment are adopted, so that the compatibility of the carbon fibers and a PC matrix is better, the adhesive force is increased, and the acidized and modified carbon fiber reinforced polycarbonate resin composite material with a specific structure is obtained. The composite material product has a special electromagnetic shielding function, has the characteristics of stable size, good processing fluidity, creep resistance, weather resistance, static resistance, good heat conduction and the like, is simple in process and easy to control, and is beneficial to industrial continuous production. The material can be widely applied to aerospace and military fields, industrial special parts, electronic industry, other electromagnetic shielding occasions with special requirements and the like.

Description

technical field [0001] The invention belongs to the technical field of polycarbonate resin composite materials, and relates to a carbon fiber reinforced PC resin composite material and its preparation method and application, in particular to an acid-treated modified carbon fiber reinforced PC resin composite material and its preparation method and application . Background technique [0002] Polycarbonate, referred to as PC in English, is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. PC is an engineering plastic with excellent comprehensive properties. It has outstanding impact resistance, good creep resistance and dimensional stability, and can maintain high mechanical strength in a high temperature range. It is non-toxic and has excellent dielectric properties. Due to the special structure of polycarbonate, it has bec...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L51/00C08K9/02C08K7/06C08K5/134C08J5/06H05K9/00
CPCC08J5/06C08J2369/00C08J2451/00C08K5/1345C08K7/06C08K9/02H05K9/009
Inventor 咸旭胜李迎春傅航
Owner 重庆可益荧新材料有限公司
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