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Car roof polyurethane composite board as well as preparation method thereof and car

A technology for composite panels and car ceilings, applied in chemical instruments and methods, flat products, vehicle parts, etc., can solve the problems of weak bending strength and bending force, waste of raw materials, heavy plate weight, etc., and achieve good bending strength and bending force. , The effect of low raw material usage and low cost

Active Publication Date: 2019-03-22
ZHEJIANG GEELY HLDG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Some car roof panels have large arcs at local locations such as reading lights, handrails, or A-pillars, B-pillars, and C-pillars. The panels do not have sufficient strength during molding and are prone to tearing or even breaking.
In order to solve this problem, the strength is usually increased by increasing the amount of glass fiber and rubber powder or increasing the number of layers of the board to achieve the required stiffness. However, this not only wastes raw materials and increases costs, but also causes the overall weight of the board to be heavier It is heavy and does not meet the requirements of light weight. At the same time, the bending strength and bending force are weak. In actual use, it is easy to cause problems such as wrinkles, softness, seating and deformation of the ceiling.

Method used

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  • Car roof polyurethane composite board as well as preparation method thereof and car
  • Car roof polyurethane composite board as well as preparation method thereof and car
  • Car roof polyurethane composite board as well as preparation method thereof and car

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preparation example Construction

[0085] According to a second aspect of the present invention, a method for preparing the above-mentioned automobile roof polyurethane composite sheet is provided, comprising the following steps:

[0086] The PU substrate and at least one layer of glass fiber, at least one layer of rubber powder and at least one layer of polymer film layer are heated and pressed to obtain a polyurethane composite panel for the roof of the car; Combined with the PU board where the strength is to be strengthened.

[0087] The description of the structure of each layer and the position on the PU board where the strength is to be strengthened are the same as those described in the first aspect of the present invention.

[0088] The preparation process of the polyurethane composite board is simple and convenient for industrial production.

[0089] The specific process flow includes:

[0090] S1, prepare the fiber fabric layer (glass fiber cloth) that needs local reinforcement position shape;

[0...

Embodiment 1

[0112] A kind of high-strength polyurethane composite board for car roof with local reading lights, which comprises from top to bottom: PE film (thickness: 0.1mm), first glass fiber layer (thickness: 0.5mm), first rubber powder layer (thickness 0.1mm), PU board (thickness 10mm), PA film (thickness 0.1mm), glass fiber cloth (thickness 0.3mm), second rubber powder layer (thickness 0.1mm), second glass fiber layer (thickness 0.5mm) and non-woven layer (thickness 0.5mm). Among them, the position and shape of the PA film and glass fiber cloth correspond to the position of the plate reading light.

Embodiment 2

[0114] A high-strength automotive roof composite board for partial handrails, which includes: PE film (thickness: 0.02mm), first glass fiber layer (thickness: 1mm), first rubber powder layer (thickness: 0.01mm) from top to bottom mm), PU board (thickness 15mm), PA film (thickness 0.02mm), glass fiber cloth (thickness 0.5mm), second rubber powder layer (thickness 0.01mm), second glass fiber layer (thickness 1mm) and non-woven layer (thickness 0.1mm). Among them, the position and shape of the PA film and glass fiber cloth correspond to the position of the panel handrail.

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Abstract

The invention discloses a car roof polyurethane composite board as well as a preparation method thereof and a car, relating to the technical field of composite boards. The car roof polyurethane composite board comprises a PU base board, at least one glass fiber layer, at least one rubber powder layer, and at least one polymer film layer, wherein the PU base board comprises a PU board, and a position where the strength needs to be reinforced on the PU board is bonded with an adhesive layer and a fiber fabric layer in sequence. By adopting the car roof polyurethane composite board provided by the invention, the problems of high cost, heavy board weight and easiness in local tearing in the traditional method of improving the strength of the board by increasing the dosage of glass fiber and rubber powder or increasing the number of layers of the board are relieved. According to the car roof polyurethane composite board, by locally adding the polymer film and fiber fabric layers, the boardis enabled to be lighter in weight under the condition of meeting local strength and avoiding local tearing, also has better bending strength and bending force, and is not easy to cause the roof to have the problems of folding, softness, slumping and deformation during use.

Description

technical field [0001] The invention relates to the technical field of composite boards, in particular to a polyurethane composite board for the roof of an automobile, a preparation method thereof, and an automobile. Background technique [0002] Polyurethane composite panels have the characteristics of sound absorption, heat insulation, light weight, easy installation and no irritating odor, and have been applied to car roofs. As the requirements for the quality, weight and strength of the roof are getting higher and higher, there are more and more studies on the tensile strength and bending strength of polyurethane composite panels. [0003] In the prior art, the polyurethane multilayer composite board is laid on the workbench of the composite line by laying the non-woven fabric roll, and then sprinkles chopped glass fiber and solid hot-melt adhesive on the non-woven fabric, and then puts it on the polyurethane foam. Sprinkle chopped glass fiber and solid hot-melt adhesiv...

Claims

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Application Information

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IPC IPC(8): B32B17/02B32B17/10B32B7/12B32B27/12B32B27/32B32B27/40B62D25/06
CPCB29D7/00B32B5/02B32B5/022B32B5/26B32B7/12B32B27/12B32B27/32B32B27/40B32B2262/101B32B2307/546B32B2307/5825B32B2605/08B62D25/06
Inventor 陈慧敏许劲松徐华
Owner ZHEJIANG GEELY HLDG GRP CO LTD