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High rigidity light composite board for automobile roof and preparation method thereof

A technology for automotive roofs and composite panels, applied to the upper structure, upper structure sub-assembly, etc., can solve problems such as damp and mildew, cold and heat deformation, etc., and achieve the effects of low cost, strong competitiveness, and simple adjustment of processing technology

Active Publication Date: 2010-06-16
JIANGSU QIYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of hot and cold deformation and damp and mildew that are prone to occur in the prior art, and provide a high-rigidity and light-weight composite board for the automobile roof. Tough, permanent moisture resistance, mold proof and no peculiar smell

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw material ratio: PPK8003 (granule) 36%, PP075 (powder) 18%, HDPE55028%, TMPTA monomer 4%, GFPP resin 20%, TDPE resin 9%, EAA resin 2%, nano calcium carbonate 1%, Accelerator PZ 0.1%, initiator BPO 0.2%, antioxidant 1010 / 168 1.0%, clean water 0.1%, foaming agent OBSH 0.6%.

[0029] Preparation:

[0030] (1) Pre-mixing: Put part of the components (PP resin, HDPE resin, TMPTA monomer, nano-calcium carbonate, PZ, BPO) in the mixer at high speed and stir, and take it out for use after 15 minutes;

[0031] (2) Grafting reaction: Put the premix obtained in (1) into the feed port of a 65-type twin-screw extruder granulator with a length-to-diameter ratio of 45:1. The temperature of the barrel is controlled at 185~205℃, and the screw speed is controlled. At 200 revolutions per minute, TMPTA monomer and PP resin, HDPE resin are grafted to obtain high melt strength polyolefin modified resin;

[0032] (3) Extruded foam board: Combine the high melt strength polyolefin modified resin obt...

Embodiment 2

[0035] Raw material ratio: PPT30S (granules) 36%, PP075 (powder) 18%, HDPE55027%, TMPTA monomer 5%, GFPP resin 20%, TDPE resin 9%, EAA resin 1.5%, nano calcium carbonate 1.5%, Accelerator PZ 0.1%, initiator BPO 0.2%, antioxidant 1010 / 168 0.9%, clean water 0.1%, foaming agent OBSH 0.7%.

[0036] Preparation:

[0037] (1) Pre-mixing: Put part of the components (PP resin, HDPE resin, TMPTA monomer, nano calcium carbonate, PZ, BPO) in the mixer at high speed and stir, and take out after 15 minutes for use;

[0038] (2) Grafting reaction: Put the premix obtained in (1) into the feed port of a 65-type twin-screw extruder granulator with a length-to-diameter ratio of 45:1. The temperature of the barrel is controlled at 185~205℃, and the screw speed is controlled. At 200 revolutions per minute, TMPTA monomer and PP resin, HDPE resin are grafted to obtain high melt strength polyolefin modified resin;

[0039] (3) Extruded foam board: Combine the high melt strength polyolefin modified resin ob...

Embodiment 3

[0042] Raw material ratio: PPK8003 (granule) 25%, PPT30S (granule) 10%, PP075 (powder) 18%, HDPE55028%, TMPTA monomer 4%, GFPP resin 20%, TDPE resin 9%, EAA resin 2 %, nano calcium carbonate 1.8%, accelerator PZ 0.1%, initiator BPO 0.2%, antioxidant 1010 / 168 1.0%, clean water 0.1%, foaming agent OBSH 0.8%.

[0043] Preparation:

[0044] (1) Pre-mixing: Put part of the components (PP resin, HDPE resin, TMPTA monomer, nano-calcium carbonate, PZ, BPO) in the mixer at high speed and stir, and take it out for use after 20 minutes;

[0045] (2) Grafting reaction: Put the premix obtained in (1) into the feed port of a 50-type twin-screw extruder granulator with a length-to-diameter ratio of 40:1, the temperature of the barrel is controlled at 190~205℃, and the screw speed At 180 revolutions per minute, the TMPTA monomer and PP resin and HDPE resin undergo grafting reaction to obtain high melt strength polyolefin modified resin;

[0046] (3) Extruded foam board: Combine the high melt strengt...

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Abstract

The invention discloses a high rigidity light composite board for an automobile roof and a preparation method thereof, and the composite board has the characteristics of light weight and heat preservation, high rigidity and high toughness, endurance and humidity resistance, rot resistance and no objectional odor and the like. The composite board is formed by compounding slightly foamed polyolefin boards and non-woven fabrics, wherein the slightly foamed polyolefin board is composed of the following raw materials by weight percent: 50-60% of polypropylene resin, 0-10% of high-density polyethylene, 2-8% of polyfunctional monomer, 15-30% of GFPP resin, 8-12% of TDPE resin, 0-5% of EAA resin, 0.5-3% of nano powder catalyst, 0.01-0.2% of accelerator, 0.05-0.5% of initiator, 0.2-2% of antioxygen, 0.1-0.3% of wetting and dispersing agent, and 0.5-2% of foaming agent; and the polyfunctional monomer is trimethylolpropane triacrylate (TMPTA) or trimethylolpropane trimethacrylate (TMPTMA).

Description

Technical field [0001] The invention relates to a composite board and a preparation method thereof, and more specifically to a high-rigidity light-weight composite board for an automobile roof and a preparation method thereof, and belongs to automobile functional interior decoration parts. Background technique [0002] Along with social development and technological progress, people pay more attention to the comfort and environmental protection of car driving, and also put forward newer and higher requirements for car roofs. At present, the domestic car roof substrates are mostly rigid polyurethane boards, hemp fiber boards or ABS boards. When the temperature is high, the boards are likely to emit harmful volatiles when heated. In rainy weather, the structure of the boards is prone to mold and deform, affecting driving. Room air quality and interior environment. [0003] The invention patent "Passenger car interior ceiling and its production process" with publication number CN 101...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06B60R13/02
Inventor 刘永忠朱华平朱金平陆川军程开峰
Owner JIANGSU QIYI TECH
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