Ultra-light high-sound-absorption GMT reinforced PU thermoplastic automotive trim composite board and preparation method thereof

A technology of automotive interior and thermoplastic, applied in the field of automotive interior and exterior decoration, can solve problems such as poor air permeability, glue sealing, complex process, etc., and achieve the effect of increasing specific strength, improving sound absorption level, and improving light weight level

Inactive Publication Date: 2019-05-31
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

Due to the use of low-density PU core foam and PU glue reinforcement, the weight can be controlled at a low level (600g / m 2 ), but there are also disadvantages of glue airtightness and poor air permeability, which lead to the inability to further improve sound absorption. At the same time, the process of roller coating PU glue is complicated, and the glue odor VOC is difficult to control. These are unsolvable problems

Method used

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  • Ultra-light high-sound-absorption GMT reinforced PU thermoplastic automotive trim composite board and preparation method thereof
  • Ultra-light high-sound-absorption GMT reinforced PU thermoplastic automotive trim composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment is an ultra-light and high-sound-absorbing GMT reinforced PU thermoplastic automotive interior composite board. layer, non-woven film.

[0032] The GMT reinforcement layer is prepared by a non-woven needle punching reinforcement process with a mass proportion of 50% thermoplastic resin fibers and a mass proportion of 50% reinforcement fibers. The thermoplastic resin fiber is modified polypropylene fiber PP, and the reinforcing fiber is modified glass fiber. The process parameters of nonwoven needling reinforcement are: needle depth 8cm, needle density 50 times / cm 2 .

[0033] The non-woven film is PP for bonding, and the weight is 40g / m 2 , The melt index of thermoplastic resin is 10g / 10min, and the non-woven film is manufactured by hot rolling process, showing a network structure.

[0034] It is prepared as follows:

[0035] The polypropylene fiber with a mass fraction of 50% and the glass fiber with a mass fraction of 50% were opened, then cross-l...

Embodiment 2

[0039] This embodiment is an ultra-light and high-sound-absorbing GMT reinforced PU thermoplastic automotive interior composite board. layer, non-woven film.

[0040] The GMT reinforcement layer is made of thermoplastic resin fibers accounting for 30% by mass and reinforcing fibers accounting for 70% by mass through a non-woven needle punching reinforcement process. The thermoplastic resin fiber is modified polypropylene fiber PP, and the reinforcing fiber is modified glass fiber. The process parameters of nonwoven needling reinforcement are: needle depth 5cm, needle density 30 times / cm 2 .

[0041] The non-woven film is PP for bonding, and the weight is 40g / m 2 , The melt index of the thermoplastic resin is 20g / 10min, and the non-woven film is manufactured by needle-punching process, showing a network structure.

[0042] It is prepared as follows:

[0043]After the mass fraction of 30% polypropylene fibers and 70% glass fibers are opened, then cross-laminated, and then n...

Embodiment 3

[0047] This embodiment is an ultra-light and high-sound-absorbing GMT reinforced PU thermoplastic automotive interior composite board. layer, non-woven film.

[0048] The GMT reinforcement layer is prepared by a non-woven needle punching reinforcement process with a mass proportion of 50% thermoplastic resin fibers and a mass proportion of 50% reinforcement fibers. The thermoplastic resin fiber is a mixture of 20% modified polypropylene fiber PP and 30% nylon fiber PA, and the reinforcing fiber is modified glass fiber. The process parameters of nonwoven needling reinforcement are: needle depth 5cm, needle density 30 times / cm 2 .

[0049] The non-woven film is PP for bonding, and the weight is 40g / m 2 , The melt index of thermoplastic resin is 30g / 10min, and the non-woven film is manufactured by spunlace process, showing a network structure.

[0050] It is prepared as follows:

[0051] After the mass fraction of 20% polypropylene fiber, 30% nylon fiber PA and 50% glass fib...

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Abstract

The invention provides an ultra-light high-sound-absorption GMT reinforced PU thermoplastic automotive trim composite board and a preparation method thereof. The composite board provided by the invention sequentially comprises a non-woven film, a GMT reinforcing layer, a non-woven film, a PU foam light plate, a non-woven film, a GMT reinforcing layer and a non-woven film from top to bottom, and the composite board is obtained by thermally compounding the GMT reinforcing layer with a 3D structure and the PU foam light plate which are bonded through the non-woven film, so that the defects of poor rigidity, full sealing, no hole and poor sound absorption in a traditional dry PU board are overcome, and the sound absorption performance and light weight of the PU composite board material are further improved.

Description

technical field [0001] The invention relates to the field of interior and exterior decoration of automobiles, more specifically, it relates to an ultra-light and high-sound-absorbing GMT reinforced PU thermoplastic automobile interior decoration composite board and a preparation method thereof. Background technique [0002] Lightweight fiber-reinforced thermoplastic composites, referred to as GMT, are mainly used as structural and interior parts in automobiles due to their high specific strength, thermoplasticity, recyclability, and easy processing and molding. At present, with the expansion and extension of the market, lightweight GMT composite materials have gradually developed into construction, home furnishing and other fields. [0003] Polyurethane (PU) composite panels occupy the domestic and foreign automotive industry roof interior composite panels market because of their excellent specific strength, thermoplasticity, sound absorption, heat insulation, and excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/02B32B27/40B32B3/24B29C65/02B29L7/00B29L9/00B29K75/00B60R13/02
Inventor 赵程波马国维方晶吕超目花东龙周立梅金波
Owner 浙江华江科技股份有限公司
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