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Special PU (polyurethane) plate for automobile roof and prepared by one-step wet method

A car roof and PU board technology, applied in the field of polyurethane foam, can solve the problems of low production efficiency, impact on product quality, roof is easy to explode, etc., achieve high elasticity and toughness, improve molding production efficiency, and reduce production molding waste rate Effect

Active Publication Date: 2012-03-28
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a special one-step wet-process PU board for the roof of an automobile. By adjusting the foaming formula, it mainly solves the problem that the existing polyurethane foam board is used for the roof of the interior decoration of a high-end car, which is easy to explode, Problems affecting product quality and low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1, accurately weighed polyether 330N, polyether 450 and phthalic anhydride polyester 3152 100 Kg, amine catalyst C-6608 and HP115 0.1 Kg, mixed blowing agent water and HCFC-141b 8 Kg, mixed silicone oil G780, L580 2.5Kg, delayed catalyst C-225 0.1 Kg, cell opener A501 1Kg, mix them evenly to make material A; mix 70% of crude MDI (PM-200) and 30% of liquefied MDI (100-LL) Modified isocyanate is called modified material B; then material A is mixed with 140 Kg of modified material B, stirred at high speed for 40 seconds, foamed into large polyurethane foam blocks, and the plasticized polyurethane foam blocks are removed and sliced. A one-step wet-process PU board dedicated to the roof of an automobile is prepared.

Embodiment 2

[0020] Example 2, accurately weigh 100Kg of polyether 330N, polyether 3050, polyether ED28 and phthalic anhydride polyester L350, mix 1.8Kg of silicone oil Y10366 and HP850, 0.5Kg of amine catalysts HP580 and HP305, and mix blowing agent HCFC-141b Mix with water 15 Kg, delay catalyst LY-95 0.3 Kg, cell opener A501 1.6 Kg, mix them evenly to make material A; mix 70% of crude MDI (PM-200) and 30% of liquefied MDI (100-LL) Uniformly make modified isocyanate, which is called modified material B; then mix material A and modified material B 175 Kg and stir at high speed for 45 seconds, foam into large polyurethane foam blocks, and remove the edge and slice the plasticized polyurethane foam blocks , to prepare a special one-step wet-process PU board for the car roof.

Embodiment 3

[0021] Example 3, accurately weigh 100Kg of polyether 450, polyether 3050 and phthalic anhydride polyester 3152, 0.3Kg of amine catalysts HP115 and HP305, mix blowing agent HCFC-141b and water 12.5Kg, mix silicone oil Y10366, L580 2.35Kg , delay catalyst C-225 0.2 Kg, cell opener A501 1.25Kg, mix them uniformly to make material A; mix 70% of crude MDI (PM-200) and 30% of liquefied MDI (100-LL) to make modified 157.5 Kg of material A and modified B were mixed at a high speed for 40 seconds, and then foamed into large polyurethane foam blocks, and the plasticized polyurethane foam blocks were removed and sliced ​​to obtain a A one-step wet-process PU board for car roofs.

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PUM

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Abstract

The invention discloses a special PU (polyurethane) plate for an automobile roof and prepared by a one-step wet method. The special PU plate is prepared by uniformly mixing the following raw materials in parts by weight, namely 100 parts of a mixture of polyether polyol and polyester polyol, 1-3 parts of mixed sillicon oil, 0.1-0.5 part of amine catalyst, 5-20 parts of mixed foaming agent, 0.1-0.3 part of delaying catalyst and 1.0-2.0 parts of pore forming agent, to obtain a material A, performing reaction of the material A and 140-175 parts of modifying material B to obtain a big foamed block, and slicing. The special PU plate is applicable to the automobile roof manufactured by the one-step wet method; and the special PU plate is good in toughness, high in size stability and low in cost.

Description

technical field [0001] The invention relates to the technical field of polyurethane foaming, in particular to a special one-step wet-process PU board for the ceiling of an automobile, which is suitable for interior decoration of the ceiling of a high-end car. Background technique [0002] At present, the interior ceiling of high-end cars generally adopts a two-step wet process, that is, the polyurethane foam board is coated with glue on both sides or roller glue, sprinkled with water, and then compounded with non-woven fabrics, glass fibers, etc., which are molded, heated and cured to form the initial stage of the car interior ceiling. Type, the initial model of the interior roof of the car, and then spray the composite surface finish layer to become the final roof of the car interior. [0003] However, with the improvement of production technology and the improvement of production efficiency requirements, a one-step wet process was born, that is, the two-part process is co...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08G18/48C08G18/42C08J9/14C08G101/00
Inventor 盛习民柳春斌
Owner YANTAI ZHENGHAI HIGH TECH
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