A kind of carbon fiber reinforced polylactic acid composite material and its preparation method and application

A technology of composite materials and polylactic acid, applied in transportation and packaging, substructure, vehicle parts, etc., can solve the problems of limited mechanical properties and low production efficiency, and achieve excellent mechanical properties, simple operation, and good appearance quality

Active Publication Date: 2017-07-04
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a carbon fiber reinforced polylactic acid composite material and its preparation method and application, which are used to solve technical defects such as limited mechanical properties and low preparation efficiency of carbon fiber composite materials in the prior art

Method used

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  • A kind of carbon fiber reinforced polylactic acid composite material and its preparation method and application
  • A kind of carbon fiber reinforced polylactic acid composite material and its preparation method and application
  • A kind of carbon fiber reinforced polylactic acid composite material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0037] The carbon fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 40 parts of modified carbon fiber, 60 parts of D-polylactic acid with a weight average molecular weight of 250000, 3 parts of phenyltrimethoxysilane, antioxidant 10101.5 parts of lubricant, 0.5 part of lubricant EBS, and 2920.2 parts of light stabilizer; among them, the modified carbon fiber is obtained by sequentially performing oxidation modification and graft modification on carbon fiber, and the oxidation modification is to make the carbon fiber in 65wt% Nitric acid solution was treated at 60°C for 5 minutes, and the grafting modification was to treat the carbon fiber in 45 wt% sodium tetrafluoroborate aqueous solution at 90°C for 5 minutes.

[0038] like figure 1 As shown, the carbon fiber reinforced polylactic acid composite material can be prepared by the following method:

[0039] 1. Preparation of modified carbon fiber

[0040] ...

Embodiment 2

[0047] The carbon fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 20 parts of modified carbon fiber, 80 parts of polylactic acid with a weight average molecular weight of 500000, γ-methacryloxypropyl trimethyl 4 parts of oxysilane, 1682 parts of antioxidant, 0.8 part of lubricant EBS, and 7700.5 parts of light stabilizer; wherein, the modified carbon fiber is obtained by sequentially oxidizing and grafting the carbon fiber, and the oxidation modification The property is to treat the carbon fiber in a 55wt% nitric acid solution at 70°C for 8 minutes, and the graft modification is to treat the carbon fiber in a 55wt% sodium tetrafluoroborate aqueous solution at 110°C for 5 minutes.

[0048] The carbon fiber reinforced polylactic acid composite material can be prepared by the following method:

[0049] 1. Preparation of modified carbon fiber

[0050] Put the carbon fiber in 55wt% nitric acid solution, modi...

Embodiment 3

[0056] The carbon fiber reinforced polylactic acid composite material of this embodiment is composed of the following components by weight: 50 parts of modified carbon fiber, 50 parts of D-polylactic acid with a weight average molecular weight of 600000, 1.5 parts of vinyltrimethoxysilane, antioxidant 1680.5 parts of silicone powder, 0.1 part of silicone powder, and 2920.1 parts of light stabilizer; among them, the modified carbon fiber is obtained by sequentially oxidizing and grafting the carbon fiber, and the oxidation modification is to make the carbon fiber in 70wt% Treat in potassium permanganate solution at 80°C for 10 minutes, and for graft modification, treat the carbon fiber in 60 wt% sodium tetrafluoroborate aqueous solution at 70°C for 10 minutes.

[0057] The carbon fiber reinforced polylactic acid composite material can be prepared by the following method:

[0058] 1. Preparation of modified carbon fiber

[0059] Put the carbon fiber in 70wt% potassium permangan...

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Abstract

The invention provides a carbon fibre reinforced polylactic acid composite material as well asa preparation method and application thereof. The carbon fibre reinforced polylactic acid composite material comprises the following components in parts by weight: 20-50 parts of modified carbon fibre, 50-80 parts of polylactic acid, 1.5-5 parts of a silane coupling agent, 0.5-3 parts of an antioxygent, 0.1-1 part of a lubricating agent, and 0.1-0.5 part of a light stabilizer, wherein the modified carbon fibre is obtained by carrying out oxidization modification and grafting modification of carbon fibre in sequence. The carbon fibre reinforced polylactic acid composite material prepared by the invention can be biodegradable; furthermore, the carbon fibre reinforced polylactic acid composite material has excellent mechanical property and thermal stability and wide application range; particularly, the carbon fibre reinforced polylactic acid composite material can be used for replacing the traditional metal material and used as an automobile component material; a formed automobile component is light in weight and good in appearance and quality; and the use property of the automobile component can be satisfied well.

Description

technical field [0001] The invention relates to a carbon fiber reinforced composite material, in particular to a carbon fiber reinforced polylactic acid composite material and its preparation method and application. Background technique [0002] Carbon fiber reinforced composite materials are composite materials formed of carbon fiber as reinforcement and resin, ceramics, metal, cement, carbonaceous or rubber as matrix. It has been widely used because of its excellent mechanical properties and thermophysical properties. . [0003] At present, the carbon fiber reinforced composite materials used in automobile components are mainly carbon fiber reinforced epoxy resin composite materials. Since epoxy resin is a thermosetting resin, the prepared carbon fiber composite materials cannot be recycled. In order to solve the problem of recycling and reuse, the preparation of carbon fiber composite materials based on thermoplastic resins has become one of the current hot spots. Thermo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K13/06C08K9/02C08K7/06C08K5/134C08K5/5419C08K5/20C08K5/5425B29C47/92B62D21/00B29C48/92
Inventor 王凤霞
Owner BAIC MOTOR CORP LTD
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