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Flame-retardant composite polyether for on-site spraying

A combination of polyether and on-site technology, which is applied in the field of main raw materials of polyurethane rigid foam, can solve the problems of difficult production and achieve the effects of low cost, fast curing and good adhesion

Inactive Publication Date: 2015-05-13
DALIAN YIXING ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On-site spraying combined polyether requires milky white, wire drawing, short debonding time, and good adhesion. The production of ordinary polyether is relatively simple, but with the increase in flame retardancy requirements in recent years, especially the oxygen index is required to reach 30, It is very difficult to achieve in production. Even if the product density is basically above 45, the current relatively large oxygen index of BASF and Wanhua is around 28.

Method used

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  • Flame-retardant composite polyether for on-site spraying
  • Flame-retardant composite polyether for on-site spraying

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Embodiment Construction

[0008] The present invention will be described in further detail below in conjunction with specific examples, but the present invention is not limited to the specific examples.

[0009] On-site spraying flame retardant combination polyether, the formula is as follows:

[0010]

[0011] Add various raw materials into the single-screw mixing tank in proportion, the order of addition should be to add fluorodichloroethane at the end, and other raw materials should be added in any order, keep the room temperature between 15 degrees and 25 degrees, after all the materials are added, turn on the stirring device , stirred for 10 minutes, then stood still for 10 minutes, stirred for another 20 minutes, and finally filtered for use.

[0012] During construction, use black material for polyurethane foaming, with an oxygen index of 30 and a free foam density of 40.

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Abstract

The invention belongs to a main raw material for rigid polyurethane foam, and provides flame-retardant composite polyether for on-site spraying. The composite polyether is prepared from following raw materials according to a ratio: L-4110C polyether, triethanolamine, 3152 polyester, tris(1-chloro-2-propyl)phosphate, A33, silicone oil (8805), 1,3,5-tris[3-(dimethylamino)propyl]hexahydro-1,3,5-triazine, potassium oleate, pentamethyldiethylenetriamine, dibutyltin dilaurate and dichlorofluoroethane. Compared with products of the same type, the composite polyether has obvious advantages and is advantageous in that: a polyether cost is low; a formula is simple; during using, products of the composite polyether are milky white, short in wire drawing and debonding time and good in adhesion force; the oxygen index can reach 30; the free bubble density can reach about 40, and flame retardant effects are ensured.

Description

technical field [0001] The invention belongs to the main raw material of rigid polyurethane foam. Background technique [0002] Combined polyether is one of the main raw materials of polyurethane rigid foam, also known as white material, and it is called black and white material together with polymeric MDI. Combination polyether is composed of polyether monomer, foam stabilizer, crosslinking agent, catalyst, foaming agent and other components. On-site spraying combined polyether requires milky white, wire drawing, short debonding time, and good adhesion. The production of ordinary polyether is relatively simple, but with the increase in flame retardancy requirements in recent years, especially the oxygen index is required to reach 30, It is very difficult to achieve in production. Even if the product density is basically above 45, the current relatively large oxygen index of BASF and Wanhua is around 28. Contents of the invention [0003] The purpose of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08K5/521C08K5/098
CPCC08G18/6622C08G18/3281C08G18/4018C08G18/42C08G18/48C08J9/144C08J2203/142C08K5/098C08K5/521
Inventor 吴桂斌
Owner DALIAN YIXING ENERGY TECH
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