Light fiber-reinforced thermoplastic plate used for high-performance passenger vehicle bottom protection plate and preparation technology thereof

A technology for reinforcing thermoplastic and lightweight fibers, applied in the field of composite materials for automotive exterior parts, can solve the problems of less attention to the material selection, design and processing technology of the bottom guard plate, and achieve the effect of optimizing production efficiency and excellent impact resistance

Active Publication Date: 2014-04-02
浙江华江科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are very few literature reports and patents on the passenger car bottom guard, and most of the researches focus on the product's appearance design or structure combination, such as CN201484344U, CN302605956S, CN302278734S, etc., on the material selection, design and processing technology of the bottom guard less attention, especially the patents related to the sound absorption and flame retardancy of the bottom guard have not been reported

Method used

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  • Light fiber-reinforced thermoplastic plate used for high-performance passenger vehicle bottom protection plate and preparation technology thereof
  • Light fiber-reinforced thermoplastic plate used for high-performance passenger vehicle bottom protection plate and preparation technology thereof
  • Light fiber-reinforced thermoplastic plate used for high-performance passenger vehicle bottom protection plate and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) After the polypropylene fiber with a mass fraction of 65% and the glass fiber with a mass fraction of 20% are loosened by an opener, they are then cross-laid, and 5%, 50-mesh polyethylene rubber powder and 200-mesh, 10% aluminum hydroxide powder, followed by infrared baking at 140°C, and needle punching with tapered needles, needle depth 7mm, and needle density 45, to obtain a fiber-reinforced thermoplastic felt for the impact-resistant flame-retardant layer 3. Combining the composition design and acupuncture process, the layer has good impact resistance, and the modified aluminum hydroxide particles are evenly dispersed in the material, which can absorb heat and decompose to generate water during the combustion process, thereby achieving the effect of flame retardancy. Therefore, this layer has both the functions of impact resistance and flame retardancy.

[0028] (2) After the polypropylene fiber with a mass fraction of 45% and the reinforcing fiber 7 with a mass ...

Embodiment 2

[0035] (1) Open the polypropylene fiber with a mass fraction of 55% and 30% (glass fiber + basalt fiber) by an opener, then cross-laminate, and add 6% polypropylene glue of 200 mesh through a powder spreader Powder and 400 mesh, 9% modified magnesium hydroxide powder, followed by infrared baking at 140 ° C, and needle punching with tapered needles, needle depth 5 mm, needle density 80, to obtain the impact flame retardant layer 3 Fiber reinforced thermoplastic felt.

[0036] (2) After the polypropylene fiber with a mass fraction of 45% and the reinforcing fiber with a mass fraction of 50% are opened by a fiber opener, then cross-laminated, and 10%, 150 mesh and 50 mesh polypropylene rubber powder are added through a powder spreader, Then infrared baking was carried out at 140° C., and needle punching was carried out with circular needles with a needle depth of 10 mm and a needle density of 40 to obtain a fiber-reinforced thermoplastic felt for the anti-sound-absorbing layer 4 ...

Embodiment 3

[0039] (1) After the mass fraction of 50% (polypropylene fiber + nylon fiber) and 30% of the glass fiber are loosened by the opener, then cross-laminated, and 10% of the 100-mesh polyethylene glue is added through the powder spreader powder and 300 mesh, 10% expanded graphite powder, followed by infrared baking at 140°C, and needle punching with triangular needles, needle depth 9mm, and needle density 66, to obtain a fiber-reinforced thermoplastic felt for the impact-resistant flame-retardant layer 3 .

[0040] (2) After the polypropylene fiber with a mass fraction of 45% and the reinforcing fiber with a mass fraction of 50% are opened by a fiber opener, then cross-laid, and 10%, 150 mesh and 50 mesh polyethylene rubber powder are added through a powder spreader, Then infrared baking was carried out at 140° C., and needle punching was carried out with tapered needles, the needle depth was 7 mm, and the needle density was 70, to obtain the fiber-reinforced thermoplastic felt of...

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Abstract

The invention relates to the field of composite materials for automobile exterior trimming parts, in particular to a light fiber-reinforced thermoplastic plate used for a high-performance passenger vehicle bottom protection plate and a preparation technology thereof. The plate comprises a surface material layer, a netty hot melt adhesive film, an anti-impact inflaming retarding layer, a sound absorbing layer, an anti-impact inflaming retarding layer, a netty hot melt adhesive film and a surface material layer from top to bottom in sequence. According to the technology, after thermoplastic resin fibers and reinforced fibers in different proportions are subjected to opening by an opener, cross lapping is carried out, mixed powder of polyolefin rubber powder and inflaming retarding filler in different proportions is added by a powder distributor, 140-degree infrared roasting is carried out, and finally, a fiber-reinforced thermoplastic felt and the like are obtained after the needling of different needle punching technologies. The light fiber-reinforced thermoplastic plate has excellent anti-impact, sound-absorbing and inflaming retarding performances, and effectively solves various problems which are encountered when the existing common bottom protection plates in the market are used; the preparation technology is simple, convenient, feasible, flexible and varied, the performances of products are designed according to the practical application needs, and the production efficiency is optimized.

Description

technical field [0001] The invention relates to the field of composite materials for automotive exterior parts, in particular to a lightweight fiber-reinforced thermoplastic plate for high-performance passenger car bottom guards and a preparation process thereof. Background technique [0002] The car bottom guard is mainly used to protect the engine and chassis. When the car passes through an obstacle road, the bottom guard can prevent the engine and chassis from being penetrated by stones or other hard substances, resulting in engine oil leakage or gearbox casing damage. In addition, after the car chassis is installed into the car bottom guard, it can effectively reduce the noise generated during the driving process of the car, thereby improving the comfort of the riding environment. [0003] At present, the bottom guards on the market mainly include steel plate, aluminum alloy, hard plastic and fiber-reinforced plastic. The engine bottom guard plate made of steel plate is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/54B32B27/02B32B27/08B32B27/18B32B27/20B32B33/00
Inventor 傅华康周立赵涛丁文鹏马国维
Owner 浙江华江科技股份有限公司
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