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Composition for preparing polyurethane self-skinning foam, polyurethane self-skinning foam and preparation method of polyurethane self-skinning foam

A composition and technology of self-skinned skin, applied in the field of preparing polyurethane self-skinned foam, polyurethane self-skinned foam and the preparation of polyurethane self-skinned foam, can solve the problems of poor high temperature resistance and other problems

Inactive Publication Date: 2021-04-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polyurethane self-skinned foam can have certain mechanical strength, its high temperature resistance is poor
Therefore, the current polyurethane integral skin foam is difficult to be widely used in powertrain and other parts that require high temperature resistance of materials, such as the position around the generator or motor
[0003] Therefore, the composition for preparing polyurethane self-skin foam, polyurethane self-skin foam and the method for preparing polyurethane self-skin foam still need to be improved

Method used

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  • Composition for preparing polyurethane self-skinning foam, polyurethane self-skinning foam and preparation method of polyurethane self-skinning foam
  • Composition for preparing polyurethane self-skinning foam, polyurethane self-skinning foam and preparation method of polyurethane self-skinning foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The composition and weight percent of composition described on this example are as follows:

[0042] Material A: 50 parts by weight of the first type polyether polyol (2802 of Shell, 3 functionalities, molecular weight is 6000), 40 parts by weight of grafted polyether polyol (3630 of Wanhua), 12 parts of aromatic ring Oxygen resin modified polyether polyol (the adduct of bisphenol A epoxy resin and diethanolamine, wherein, the molar ratio of diethanolamine and bisphenol A epoxy resin is 1:1), the surfactant of 0.6 weight part ( Dow's silicone oil DC6070), 2 parts of crosslinking agent (triethanolamine), 4 parts of chain extender (ethylene glycol), 4 parts of chain extender (butylene glycol), 1.5 parts of catalyst (Lixin's C2), 4 parts 1 part of antioxidant (KY176 of Lixin), 15 parts of flame retardant (yk69 of Xiangyang Yake), 2 parts of black color paste, 18 parts of foaming agent (141b of Novo Company).

[0043] Material B: 62 parts of polyisocyanate (8629 from Wanhu...

Embodiment 2

[0046] Material A: 50 parts by weight of the first type polyether polyol (2802 of Shell, 3 functionalities, molecular weight is 6000), 40 parts by weight of grafted polyether polyol (3630 of Wanhua), 8 parts of aromatic ring Oxygen resin modified polyether polyol (adduct of bisphenol A epoxy resin and diethanolamine, wherein, the molar ratio of diethanolamine and bisphenol A epoxy resin is 1:1), 5 parts of melamine resin (long 5083H of Hua Chemical), 0.6 parts by weight of surfactant (Dow's silicone oil DC6070), 2 parts of crosslinking agent (triethanolamine), 4 parts of chain extender (ethylene glycol), 4 parts of chain extender (butanediol Alcohol), 1.5 parts of catalyst (Lixin's C2), 4 parts of antioxidant (Lixin's KY176), 15 parts of flame retardant (Xiangyang Yake's yk69), 2 parts of black color paste, 18 parts of blowing agent ( - 141b of Nova Corporation).

[0047] Material B: 60 parts of polyisocyanate (8629 from Wanhua).

[0048] Add material A and material B into t...

Embodiment 3

[0050] Material A: 50 parts by weight of the first type polyether polyol (Shell's 2802, 3 functionality, molecular weight is 6000), 40 parts by weight of grafted polyether polyol (3630 of Wanhua), 20 parts of melamine resin (5083H of Changhua Chemical), 0.6 parts by weight of surfactant (Dow's silicone oil DC6070), 2 parts of crosslinking agent (triethanolamine), 4 parts of chain extender (ethylene glycol), 4 parts of chain extender ( Butanediol), 1.5 parts of catalyst (Lixin's C2), 4 parts of antioxidant (Lixin's KY176), 15 parts of flame retardant (Xiangyang Yake's yk69), 2 parts of black color paste, 18 parts of foam Agent (141b of Norwich Company).

[0051] Material B: 65 parts of polyisocyanate (8629 from Wanhua).

[0052] Add material A and material B into the material tank separately, foam and beat out.

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Abstract

The invention provides a composition for preparing polyurethane self-skinning foam, the polyurethane self-skinning foam and a preparation method for preparing the polyurethane self-skinning foam. The composition comprises temperature-resistant polyether polyol, the temperature-resistant polyether polyol is a mixture of grafted polyether polyol and first-type polyether polyol or a mixture of grafted polyether polyol and second-type polyether polyol, and the first-type polyether polyol contains one or more first polyether polyols; the second-type polyether polyol contains one or more second polyether polyols, and when the composition contains the first-type polyether polyol, the composition further comprises at least one of aromatic epoxy resin modified polyether polyol and melamine resin. The polyurethane self-skinning foam prepared from the composition has good high temperature resistance.

Description

technical field [0001] The invention relates to the fields of chemical industry and automobile manufacturing. Specifically, the invention relates to a composition for preparing polyurethane self-skin foam, a polyurethane self-skin foam and a method for preparing the polyurethane self-skin foam. Background technique [0002] Polyurethane self-skin foam (Intergral skin foam, ISF) is a material that does not require other plastics to form a surface hard skin, but relies on the foaming component to form a surface hard skin and a foam core at one time during molding. Polyurethane integral skin foam can have a higher strength skin layer, which in turn can ensure the overall physical and mechanical properties of the product while the overall density of the material is low. Therefore, under the premise of ensuring product quality, polyurethane integral skin foam products have the advantages of saving dosage and lower production cost. The current self-skinning foam is mainly used in...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/63C08G18/50C08G18/48C08G18/34C08G18/54C08J9/14C08J9/34C08G101/00
Inventor 段平平周维高鹏王琴红马礼涛
Owner BYD CO LTD