Low-density flame retardant polyurethane hard foam plastic and preparation method thereof

A rigid foam, low-density technology, applied in the field of low-density flame-retardant polyurethane rigid foam and its preparation, can only process dark-colored products; others such as graphite, red phosphorus, molybdenum disulfide, metal powder And industrial slag itself has problems such as color

Inactive Publication Date: 2018-04-03
合肥华福土工合成材料有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, carbon black is black and can only process dark-colored products; others such as graphite, red phospho

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof
  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof
  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Control the ambient temperature to 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, and 0.4 parts by weight of silicone foam stabilizer , 0.9 parts by weight of stannous octoate, 30 parts by weight of isocyanate, 20 parts by weight of dimethyl methyl phosphate, and 30 parts by weight of decabromodiphenyl ether are quickly poured into the tank and stirred for 9-10s under the condition of 2900r / min stirring speed Combine the materials, quickly pour the combined materials into the mold heated to 40-45°C and cover the mold. Maturation is carried out at 70-90°C. After curing, take out the board and let it stand for more than 12 hours at 10-40℃.

Example Embodiment

[0020] Example 2

[0021] Control the ambient temperature to 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, and 0.4 parts by weight of silicone foam stabilizer , 0.9 parts by weight of stannous octoate, 40 parts by weight of isocyanate, 30 parts by weight of dimethyl methyl phosphate, and 20 parts by weight of decabromodiphenyl ether are quickly poured into the tank and stirred for 9-10s under the condition of 2900r / min stirring speed Combine the materials, quickly pour the combined materials into the mold heated to 40-45°C and cover the mold. Maturation is carried out at 70-90°C. After curing, take out the board and let it stand for more than 12 hours at 10-40℃.

Example Embodiment

[0022] Example 3

[0023] Control the ambient temperature to 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, and 0.4 parts by weight of silicone foam stabilizer , 0.9 parts by weight of stannous octoate, 30 parts by weight of isocyanate, 15 parts by weight of dimethyl methyl phosphate, and 10 parts by weight of decabromodiphenyl ether are quickly poured into the tank and stirred for 9-10 seconds at a stirring speed of 2900r / min. Combine the materials, quickly pour the combined materials into the mold heated to 40-45°C and cover the mold. Maturation is carried out at 70-90°C. After curing, take out the board and let it stand for more than 12 hours at 10-40℃.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of polyurethane foam plastics, in particular to a low-density flame retardant polyurethane hard foam plastic and a preparation method thereof. According tothe preparation method, raw materials such as polyether, isocyanate, diethanolameine, catalysts, foam stabilizing agents, foaming agents, dimethyl methylphosphate and fire retardants are all mixed together through metering; high-speed stirring is performed; uniform mixing is performed to complete the foaming process; after the generation of chemical reaction, a certain step is performed; the low-density flame retardant polyurethane hard foam plastic is generated. The decabromodiphenyl ether is used as a fire retardant; meanwhile, the impact performance of inorganic filling materials and partial organic material formula is compensated. The low-density flame retardant polyurethane hard foam plastic and the preparation method have the main advantages that the flow process is simple; the equipment investment is low; the polyurethane hard foam plastic with low density, not dark color and certain flame retardant characteristics can be prepared.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam preparation, in particular to a low-density flame-retardant polyurethane rigid foam and a preparation method thereof. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated carbamate groups on the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compound. According to the different raw materials used, there are different types of products, generally polyester type and polyether type, and no by-products are formed. The mechanism of polyurethane two-component reaction molding process is as follows: [0003] -NCO+-OH→-NHCOO- gel reaction exothermic reaction [0004] -NCO+H2O→NH2+CO2 foaming reaction endothermic reaction [0005] The reaction mechanism involves a cross-linking reaction. The rate of gelation reaction and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G18/48C08G18/66C08K5/06C08K5/521C08L75/08C08J9/08C08G101/00
CPCC08G18/14C08G18/48C08G18/6688C08J9/08C08J2375/08C08K5/06C08K5/521C08L2201/02C08L2203/14C08G2110/0083C08L75/08
Inventor 武全福
Owner 合肥华福土工合成材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap