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Automobile composite material prepared by taking bamboo fibers as main reinforcement, and preparation method of automobile composite material

A composite material, bamboo fiber technology, used in chemical instruments and methods, wood layered products, synthetic resin layered products, etc.

Active Publication Date: 2018-08-10
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation process of the material, the wood fibers contain one or more of phenolic adhesives, melamine adhesives, and isocyanate adhesives, and the prepared composite material contains a large proportion of non-reusable thermosetting resins and a large amount of The hemp fiber, which brings environmental pollution and strong smell during the production process, prevents this composite material from being widely used in the automotive industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034]The raw materials of the automotive composite material in which the bamboo fiber is the main reinforcement include modified long bamboo fiber, modified wood fiber and flame-retardant polymer fiber. Its preparation method includes the following main steps: the composite fiber felt prepared from modified long bamboo fiber, flame-retardant polymer fiber and modified wood fiber is prepared into a dense softening material through a "high temperature and low pressure softening process", and then The softened material is sent into the mold and shaped by the "low temperature and high pressure cooling process", and finally the composite material for vehicles is obtained, and finally the surface of the composite material is decorated. Long bamboo fiber plays a reinforcing role in the composite material and its length is 50-100mm; wood fiber must be added in the composite material, and its short, thin and small features can be filled in the tiny pores of the composite material, maki...

Embodiment 1

[0045] Soak wood fiber and long bamboo fiber (fiber length is 50-100mm, moisture content is dry to 15wt.%) in flame retardant (ammonium polyphosphate) solution, and then squeeze out excess flame retardant liquid to make flame retardant The mass ratio of the agent in the fiber is 15%. Open the flame-retardant long bamboo fiber and the flame-retardant polypropylene fiber, and then prepare a composite fiber felt according to the ratio of wood fiber, bamboo fiber, and polypropylene fiber mass ratio of 6%: 44%: 50%, and then put the felt into Pre-compress in a molding machine at a temperature of 200°C, a pressure of 5MPa, and a time of 2 minutes, then put the pre-pressed sheet into the mold for cold pressing to shape, at a temperature of 30-40°C, a pressure of 15MPa, and a time of 2.5 minutes to prepare Obtain automotive composite materials. The results show that the surface of the composite material is relatively smooth, with occasional pits. This is because there are wood fibers...

Embodiment 2

[0047] Soak wood fiber and long bamboo fiber (fiber length is 50-100mm, moisture content is dry to 10wt.%) in flame retardant (melamine) solution, then squeeze out excess flame retardant liquid, make flame retardant in The mass ratio in the fiber was 15%. Open the flame-retardant long bamboo fiber and the flame-retardant polypropylene fiber, and then prepare a composite fiber felt according to the ratio of wood fiber, bamboo fiber, and polypropylene fiber mass ratio of 15%: 35%: 50%, and then put the felt into Pre-compress in a molding machine at a temperature of 200°C, a pressure of 3MPa, and a time of 2 minutes, and then put the pre-pressed sheet into the mold for cold pressing to shape at a temperature of 30-40°C, a pressure of 15 MPa, and a time of 2.5 minutes. Obtain automotive composite materials. The results show that: compared with Example 1, the surface of the composite material is smoother, because the wood fiber content in the composite material is higher, which ca...

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Abstract

The invention relates to an automobile composite material prepared by taking bamboo fibers as main reinforcement, and a preparation method of the automobile composite material, belonging to the fieldof automobile composite materials. The automobile composite material is prepared from modified bamboo fibers, modified wood fibers and flame retardant polymer fibers, wherein the lengths of the bamboofibers are 50-100mm; tiny pores of the composite material is filled with the wood fibers, and the flame retardant polymer fibers are in a state of being melted and then cooled, so that the compositematerial is entirely densified. The automobile composite material is prepared by the steps of a high temperature and low pressure softening process for preparing a softened sheet and a low temperatureand high pressure cooling process for shaping. The long bamboo fibers used in the composite material have a reinforcing effect; the wood fibers can be used for filling the tiny pores of the compositematerial, so that the wood fibers not only plays an auxiliary reinforcing role, but also can enable the composite material to be compact on the whole and to have a smoother surface. The automobile composite material and the preparation method thereof can promote the development of the bamboo fiber industry; the bamboo fibers are applied to the field of the automobile composite materials, so thata new idea is provided for solving the problem of bamboo fiber application in China.

Description

technical field [0001] The invention relates to a vehicle composite material with bamboo fiber as the main reinforcement and a preparation method thereof, belonging to the field of vehicle composite materials. The material prepared by the method adopts long bamboo fiber as a reinforcing body, and the wood fiber plays the role of auxiliary reinforcement and filling. The present invention can promote the development of wood and bamboo fiber industries, apply natural plant fibers to the field of composite materials for vehicles, and accelerate the speed of vehicles. Greening processes with composite materials. Background technique [0002] my country has now become the world's largest automobile production country, and China's automobile industry has entered a period of rapid development. In 2000, the European Union issued a guidance document (2000 / 53 / CE), which clearly pointed out that after the vehicle is scrapped, the reusable materials should reach 85%. It can be seen that...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L97/02C08L67/00C08L77/00B32B37/10B32B37/12B32B9/02B32B9/04B32B21/02B32B21/04B32B27/02B32B27/06B32B27/36B32B27/34B32B27/32
CPCB32B5/02B32B5/08B32B37/10B32B37/12B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/065B32B2262/067B32B2262/14C08L23/12C08L67/00C08L97/02C08L2205/025C08L2205/03C08L77/00
Inventor 唐启恒郭文静
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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