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Preparation method of fire retardant polymer polyether polyol and method for preparing block fire retardant polyurethane foam mateial therefrom

A technology of polyether polyol and flame-retardant polymer, which is applied in the field of flame-retardant polymer polyether polyol and its use in the preparation of block flame-retardant polyurethane foam materials, and can solve the problem of high price, thermal instability, and foaming equipment Corrosiveness and other issues, to achieve the effect of low cost, easy foaming, and simple preparation process

Inactive Publication Date: 2005-05-25
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, homopolymers and copolymers of vinyl chloride and vinylidene chloride are usually thermally unstable, and toxic HCl gas is released during the foaming process, which is corrosive to foaming equipment; Japanese patent Jpn.Kokai.Tokyo.JP.0959 , The flame retardant used in the flame-retardant polymer polyol disclosed in 341 is polyvinyl chloride, which is also thermally unstable; Polyol, the polyurethane foam made of this polymer polyol has certain flame retardancy, but tribromostyrene is difficult to synthesize, the price is high, and it is difficult to obtain

Method used

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  • Preparation method of fire retardant polymer polyether polyol and method for preparing block fire retardant polyurethane foam mateial therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Example 1: At 40°C, 960 kilograms of polyether polyol N330, 17.4 kilograms of methyl ethyl ketoxime, 34.8 kilograms of toluene diisocyanate and triethylamine, 0.12 kilograms were added to a closed reactor with a stirrer and a thermometer, The temperature was raised to 80°C, and after constant temperature reaction at this temperature for 5 hours, 12 kg of ethylenediamine was added, and then the temperature was raised to 118°C, and reacted for 1 hour. Partially aminated diisocyanate modified polyether polyol I was obtained.

Embodiment 2

[0081] Embodiment 2: 6000, 600 kilograms of polyether polyols, 8.7 kilograms of methyl ethyl ketone oxime, 17.4 kilograms of toluene diisocyanate and triethylamine were added respectively at 40 ° C, and 0.06 kilograms were added in a closed reactor with a stirrer and a thermometer. The temperature was raised to 80°C, and after constant temperature reaction at this temperature for 5 hours, 6 kg of ethylenediamine was added, and then the temperature was raised to 118°C, and reacted for 1 hour. The partially aminated diisocyanate-modified polyether polyol II was obtained.

Embodiment 3

[0082] Embodiment 3: respectively general-purpose polyether polyol 3030, 500 kilograms, partially aminated diisocyanate modified polyether polyol 1, 69 kilograms, 221 kilograms of formaldehyde, 138 kilograms of urea, 69 kilograms of melamine, hexamethylene tetra Add 8.3 kg of amine into a closed 2000-liter reactor with a stirrer and a thermometer, raise the temperature to 80°C, react at a constant temperature at this temperature for 4 hours, and vacuum dry at 92°C for 4 hours to remove volatile components, and obtain resistance For flame-retardant polymer polyether polyol, see Example 3 of the synthesis of flame-retardant polymer polyether polyol, foam formulation and performance comparison table of flame-retardant polyurethane foam.

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Abstract

A flame-retarding polyether polyol is a stable polymer colloid dispersed system composed of the continuous phase (universal polyether polyol) and the dispersed phase (surface grafted partially aminated diisocyanate modified polyether polyol nanoparticles). It is prepared through the reaction of formaldehyde-urea-cyanuramide-hexamethine tetramine in polyether polyol under existance of said dispersed system, and drying. A flame-retarding polyurethane foam is prepared from said flame-retarding polyether polyol, universal polyetherpolyol and diisocyanate through block foaming under existance of catalyst and foaming agent.

Description

technical field [0001] The invention belongs to the field of polymer polyether polyol and its preparation and application, and in particular relates to a flame-retardant polymer polyether polyol and a method for preparing a block-shaped flame-retardant polyurethane foam material. Background technique [0002] Polyurethane foam is a high polymer with unique properties and versatile uses. It is based on polyether polyol and diisocyanate, mixed with a small amount of water, silicone surfactant, foaming agent, and formed under the combined action of organotin and tertiary amine catalysts. It can be used to make hard , semi-rigid and soft polyurethane foam, mainly used as shock-absorbing materials for seat cushions, cushions, interior parts and motorcycle saddles, etc., and can also be used to make sofas, mattresses, decorative materials and other civil uses product. [0003] Polymer polyether polyols are usually the product of free radical dispersion polymerization of vinyl mo...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/72C08G65/04C08G65/333
Inventor 顾尧李辉逄海萍
Owner QINGDAO UNIV OF SCI & TECH
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