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Low-aldehyde high-temperature-resistant polyurethane material and preparation method thereof

A technology of polyurethane material and high temperature resistance, which is applied in the field of polyurethane materials, can solve the problems of high temperature resistance and poor flame retardancy, and achieve the effects of increased rigidity, improved environmental protection performance, and increased content

Inactive Publication Date: 2019-02-22
俞小峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a low-aldehyde high-temperature-resistant polyurethane material and its preparation method in view of the problems of poor high-temperature resistance and flame-retardant performance of current polyurethane materials

Method used

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  • Low-aldehyde high-temperature-resistant polyurethane material and preparation method thereof

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preparation example Construction

[0026] The preparation method of polyurethane base thing is:

[0027] Take formaldehyde and add deionized water according to the mass ratio of 1~3:3~5 to obtain a mixed solution, add diethanolamine to the mixed solution according to the mass ratio of 4~9:3~7, stir and mix at 25~30°C for 30~40min to obtain a mixed solution Mixture, take the stirred mixture and add it dropwise to lignin according to the mass ratio of 3~7:10~15, control the dropping time for 30~50min, heat up to 30~40°C, stir and mix for 2~4h, and distill under reduced pressure to obtain Take the vacuum distillate and add phthalic anhydride polyester polyol PS-400A and polymer polyol TPOP36 / 28 in a mass ratio of 10~20:3~7:2~5 and mix to obtain a polyurethane matrix.

[0028] The preparation method of polyurethane modified active agent is:

[0029] Take 4(4-hydroxy-phenyl)-2,3-diazepinone, add sodium hydroxide and deionized water in a mass ratio of 2~5:1~3:8~10, heat up to 55~60°C and stir Mix for 30-50 minutes,...

Embodiment 1

[0040] Brucite powder: 2500 mesh.

[0041] The preparation method of polyurethane base thing is:

[0042] Take formaldehyde and add deionized water at a mass ratio of 1:3 to obtain a mixed solution, add diethanolamine to the mixed solution at a mass ratio of 4:3, stir and mix at 25°C for 30 minutes to obtain a stirred mixture, take the stirred mixture at a mass ratio of 3:10 drops Add it to lignin, control the dropping time for 30 minutes, heat up to 30°C, stir and mix for 2 hours, distill under reduced pressure to obtain a reduced-pressure distillate, take the reduced-pressure distillate and add phthalic anhydride polyester polyol PS at a mass ratio of 10:3:2 Mix -400A and polymer polyol TPOP36 / 28 to obtain polyurethane matrix.

[0043] The preparation method of polyurethane modified active agent is:

[0044] Take 4(4-hydroxy-phenyl)-2,3-diazepinone, add sodium hydroxide and deionized water at a mass ratio of 2:1:8, heat up to 55°C and stir for 30 minutes, then add sodium h...

Embodiment 2

[0055] Brucite powder: 2500 mesh.

[0056] The preparation method of polyurethane base thing is:

[0057] Take formaldehyde and add deionized water at a mass ratio of 2:4 to obtain a mixed solution, add diethanolamine to the mixed solution at a mass ratio of 6:5, stir and mix at 28°C for 35 minutes to obtain a stirred mixture, take the stirred mixture at a mass ratio of 5:13 drops Add it to lignin, control the dropping time for 40 minutes, raise the temperature to 35°C, stir and mix for 3 hours, distill under reduced pressure to obtain a reduced-pressure distillate, take the reduced-pressure distillate and add phthalic anhydride polyester polyol PS at a mass ratio of 15:5:4 Mix -400A and polymer polyol TPOP36 / 28 to obtain polyurethane matrix.

[0058] The preparation method of polyurethane modified active agent is:

[0059] Take 4(4-hydroxy-phenyl)-2,3-diazepinone, add sodium hydroxide and deionized water in a mass ratio of 4:2:9, heat up to 58°C and stir for 40 minutes, the...

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Abstract

The invention discloses a low-aldehyde high-temperature-resistant polyurethane material, belonging to the technical field of polyurethane materials. Lignin is taken as a raw material, lignin amido polyhydric alcohol is formed and is taken as a prepolymer raw material of the polyurethane material, and when water is added as a foaming agent in the later period, polyurethane material can be well bound with water so as to form foam holes; 4(4-hydroxy-phenyl)-2,3-diazaone containing a heterocyclic ring bisphenol structure is introduced, sodium hydroxide and epoxy chloropropane are added, and epoxyresin is introduced into a rigid polyurethane foam structure, so that the heat resistance of polyurethane is integrally improved; by adding cetane into an emulsifying agent, namely a styrene-maleic anhydride copolymer, the material has a thermal insulation effect; the surface of brucite powder is covered with polyphosphoric acid and lauryl amine so as to form a flame-retardant activating agent, and a thermal insulation protection layer is formed by magnesium oxide, so that a synergistic flame retardant function is realized. According to the preparation method, the problems of poor high temperature resistance and flame retardance of existing polyurethane materials are solved.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a low-aldehyde, high-temperature-resistant polyurethane material. Background technique [0002] Polyurethane is the fastest growing polymer synthetic material in recent decades, widely used in various industries and fields such as aerospace, transportation, industry, agriculture, sports, medical and health. Polyurethane rigid foam is an important branch of polyurethane materials. It has excellent thermal insulation properties and is widely used in many fields such as walls, pipes, solar energy, refrigerators, and ships. Among them, polyurethane rigid foam has the fastest development in the field of wall insulation and is favored by the market. Throughout the application and development process, people inevitably need to face the problem of how to deal with a large amount of waste polyurethane rigid foam. These waste rigid foams mainly come from two ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/64C08G18/42C08G18/63C08G18/58C08G18/32C08G18/12C08K13/06C08K9/10C08K5/01C08K3/22C08K9/04C08K3/34C08J9/08
CPCC08G18/12C08G18/4081C08G18/42C08G18/58C08G18/632C08G18/6492C08K3/22C08K3/34C08K5/01C08K9/04C08K9/10C08K13/06C08G2110/0025C08G2110/0083C08G18/3206C08G18/3814
Inventor 俞小峰路芸庞成荣
Owner 俞小峰
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