Rigid polyurethane foam with high flame retardance and preparation method of rigid polyurethane foam

A technology of rigid polyurethane and flame-retardant polyester, which is applied in the field of polyurethane foam, can solve the problems of poor flame-retardant effect, affecting the physical properties of polyurethane foam, and high proportion of flame retardants, so as to achieve improved flame-retardant effect, excellent compressive strength and The effect of dimensional stability

Active Publication Date: 2019-06-21
广州立泰新材料科技有限公司
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has become one of the thermal insulation and energy-saving products that dominate the market; however, the polyether and polyester polyols in the common combination polyether formula currently on the market have a poor flame retardant effect due to the high content of fatty chains, and cannot reach B1 level
However, the propor

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
  • Rigid polyurethane foam with high flame retardance and preparation method of rigid polyurethane foam
  • Rigid polyurethane foam with high flame retardance and preparation method of rigid polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] In the second aspect, the present invention provides a method for preparing the high flame-retardant rigid polyurethane foam as described in the first aspect, including the following steps:

[0039] (1) Combine flame-retardant polyether polyol A, flame-retardant polyether polyol B, flame-retardant polyester polyol C, polyether polyol D, antioxidant, anti-hydrolysis stabilizer, foam stabilizer, water, catalyst A , Catalyst B, catalyst C, flame retardant, blowing agent, and auxiliary agents are mixed uniformly according to the proportion to obtain component A;

[0040] (2) The A component and the B component are sprayed on the substrate by a spraying machine to make polyurethane foam.

[0041] In the embodiment of the present invention, the step (1) specifically includes: after the auxiliary agent, the catalyst A, and the catalyst B are evenly mixed, then adding the flame-retardant polyether polyol A, the flame-retardant polyether polyol B, and the flame-retardant polyol Ester ...

Example Embodiment

[0048] Example 1

[0049] The preparation method of the high flame-retardant rigid polyurethane foam provided in this embodiment includes the following steps:

[0050] (1) Weigh the following raw materials in parts by weight: 47.2 parts of flame-retardant polyether polyol A, 39.4 parts of flame-retardant polyether polyol B, 31.2 parts of flame-retardant polyester polyol, polyether Polyol D6.2 parts, antioxidant TPP 2.5 parts, monomeric carbodiimide 1.85 parts, silicone foam stabilizer AK-8832 2.32 parts, water 4.3 parts, N,N-dimethylcyclohexylamine 3.6 parts , 2.4 parts of ethylenediamine, 2.6 parts of dibutyltin dilaurate, 27.5 parts of triethyl phosphate, 42.6 parts of 1,1,1,3,3-pentafluorobutane, 4.0 parts of auxiliary agent; The auxiliary agent, N, After N-dimethylcyclohexylamine and ethylenediamine are evenly mixed, add flame-retardant polyether polyol A, flame-retardant polyether polyol B, flame-retardant polyester polyol C, polyether polyol D, and antioxidant TPP, monomeri...

Example Embodiment

[0052] Example 2

[0053] The preparation method of the high flame-retardant rigid polyurethane foam provided in this embodiment includes the following steps:

[0054] (1) Weigh the following raw materials in parts by weight: 52.3 parts of flame-retardant polyether polyol A, 38.6 parts of flame-retardant polyether polyol B, 32.5 parts of flame-retardant polyester polyol C, and polyether polyol Alcohol D6.5 parts, antioxidant TPP 2.4 parts, monomeric carbodiimide 2.4 parts, silicone foam stabilizer AK-8832 2.8 parts, water 4.5 parts, N,N-dimethylcyclohexylamine 3.5 parts, 2.6 parts of ethylenediamine, 2.6 parts of dibutyltin dilaurate, 28 parts of triethyl phosphate, 35 parts of 1,1,1,3,3-pentafluorobutane, 3 parts of auxiliary agent; the auxiliary agent, N, N -After dimethylcyclohexylamine and ethylenediamine are evenly mixed, add flame-retardant polyether polyol A, flame-retardant polyether polyol B, flame-retardant polyester polyol C, polyether polyol D, and antioxidant TPP, mo...

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 discloses rigid polyurethane foam with high flame retardance and a preparation method of the rigid polyurethane foam. The rigid polyurethane foam with high flame retardance is prepared from a component A and a component B in a mass ratio being 1:1-1.5, wherein the component A is prepared from 30-60 parts by weight of flame-retardant polyether polyol A, 30-60 parts by weight of flame-retardant polyether polyol B, 20-40 parts by weight of flame-retardant polyester polyol C, 0-10 parts by weight of polyether polyol D, 0.5-5 parts by weight of an antioxidant, 0.5-5 parts by weight ofa hydrolysis stabilizer, 1-5 parts by weight of a foam stabilizer, 1-5 parts by weight of water, 1-5 parts by weight of a catalyst A, 1-5 parts by weight of a catalyst B, 1-5 parts by weight of a catalyst C, 20-60 parts by weight of a flame retardant, 20-60 parts by weight of a foaming agent and 0-7 parts by weight of an assistant; the component B is isocyanate. The rigid polyurethane foam with high flame retardance has the flame retardance level up to B1, the waterproof level up to II and the oxygen index higher than 30, and has excellent compressive strength and dimensional stability.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam, in particular to a high flame-retardant rigid polyurethane foam and a preparation method thereof. Background technique [0002] Rigid polyurethane foam is used to replace traditional thermal insulation materials. It is mainly used in building exterior wall insulation, roof waterproof insulation integration, cold storage insulation, pipeline insulation materials, building panels, refrigerated vehicles and cold storage insulation materials, etc. It has become one of the thermal insulation and energy-saving products that dominate the market; however, the polyether and polyester polyols in the common combination polyether formula currently on the market have a poor flame retardant effect due to the high content of fatty chains, and cannot reach the B1 level. However, the proportion of flame retardant added in the existing B1 flame-retardant rigid polyurethane foam formula on the market is t...

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): C08G18/48C08G18/50C08J9/14C08K5/521C08K3/04C09D175/08C09D5/18
Inventor 韩华强李志辉
Owner 广州立泰新材料科技有限公司
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