Title:
FULL-WATER-BASED FOAMED POLYURETHANE SHEET MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/258421
Kind Code:
A1
Abstract:
The present invention relates to a full-water-based foamed polyurethane sheet material and a preparation method therefor, relating to the technical field of polyurethane foam reinforced sheet material. The polyurethane sheet material comprises an elastic surface layer and a reinforced rigid foam core layer; the reinforced foam core layer is a rigid foam material reinforced with a porous framework, the rigid foam material at least filling a porous structure of the porous framework; the rigid foam material is a polyurethane rigid foam formed using polyol and isocyanate as main raw materials and water as a foaming agent. The present invention uses polyol and isocyanate as main raw materials and water as a foaming agent to form polyurethane rigid foam, having the advantage of being environmentally friendly; in terms of product results, the foam made using this method has better mechanical performance than foaming with a traditional foaming agent such as 141B, mainly because the water reacts with the NCO groups and the produced CO2 has a foaming effect, and more chemical crosslinking points can also be formed, thereby improving mechanical performance.
Inventors:
LONG ZHONGJIANG (CN)
TANG DAOYUAN (CN)
TANG DAOYUAN (CN)
Application Number:
PCT/CN2020/100389
Publication Date:
December 30, 2021
Filing Date:
July 06, 2020
Export Citation:
Assignee:
SHENZHEN LONGRUI NEW MATERIAL TECH CO LTD (CN)
ANHUI SENTAI WPC GROUP SHARE CO LTD (CN)
ANHUI SENTAI WPC GROUP SHARE CO LTD (CN)
International Classes:
B29D7/00; B32B27/40; B32B1/06; B32B3/12; B32B5/02; B32B7/10; B32B27/06; B32B27/08; B32B27/12; B32B27/18; B32B27/20; B32B27/26; B32B27/32; B32B33/00; C08G18/48; C08J9/08; C08G101/00
Foreign References:
| CN111231463A | 2020-06-05 | |||
| CN104097367A | 2014-10-15 | |||
| CN103203883A | 2013-07-17 | |||
| GB2380971B | 2004-12-29 | |||
| DE102012108745A1 | 2014-03-20 |
Attorney, Agent or Firm:
ZHEJIANG KG IP LAW FIRM (CN)
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