Preparation method of solid flame retardant for polyurethane and solid flame retardant prepared by method
A solid flame retardant, polyurethane technology, applied in the field of solid flame retardants for polyurethane, can solve the problems of foam collapse, cracking, physical and mechanical properties decline, etc., and achieve the effect of good mechanical properties
Inactive Publication Date: 2017-05-10
JIANGSU ZHONGSHAN CHEM
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- Abstract
- Description
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- Application Information
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Problems solved by technology
[0003] The method of externally adding flame retardants can significantly improve the flame retardant properties of polyurethane foam, but the added flame retardants exist in the form of simple fillers, which often cause physical damage such as foam collapse, cracking, pulverization, or rebound. Significant decline in mechanical properties
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] In the shear mixer, add 100Kg micropowdered melamine, then add 12Kg toluene diisocyanate, after stirring for 2 hours, add 12Kg polyether polyol (Jiangsu Zhongshan Chemical Co., Ltd. 1618A), and then stir for 2 hours to obtain surface polyether modification. Sexual powder particles.
Embodiment 2
[0025] In the shear mixer, add 100Kg micropowder tris(2,3-dibromopropyl) isomelamine, then add 4Kg polyether polyol (Jiangsu Zhongshan Chemical Co., Ltd. 1618A), stir for 2 hours, add toluene di 4Kg of isocyanate was stirred for another 2 hours to obtain surface polyether-modified powder particles.
Embodiment 3
[0027] In the shear mixer, add 100Kg micropowder Tetrabromobisphenol A, add 8Kg toluene diisocyanate, after stirring for 2 hours, add 12Kg polyether polyol (Jiangsu Zhongshan Chemical Co., Ltd. 1618A), and then stir for 2 hours to obtain Surface polyether modified powder particles.
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Abstract
The invention relates to a preparation method of a solid flame retardant for polyurethane and a solid flame retardant prepared by the method. The method comprises the following step: under the condition of continuous stirring, stirring the fine powder solid flame retardant with right amounts of isocyanate and polyether glycol to generate chemical reaction while keeping the dry powder state. The novel flame retardant of which the particle surface is grafted by polyether has favorable flame retardancy and mechanical properties when being used for preparing polyurethane materials.
Description
technical field [0001] The invention relates to a solid flame retardant for polyurethane and a preparation method thereof. Background technique [0002] At present, there are mainly two methods of polyurethane foam flame retardant: external flame retardant and structural flame retardant. [0003] The method of externally adding flame retardants can significantly improve the flame retardant properties of polyurethane foam, but the added flame retardants exist in the form of simple fillers, which often cause physical damage such as foam collapse, cracking, pulverization, or rebound. The mechanical properties are greatly reduced. [0004] US Patent Publication No. 20110006579 discusses the use of solid flame retardant additives such as ammonium phosphate, melamine, graphite, etc. CN103087506B describes the addition of ammonium polyphosphate and melamine phosphate, and the use of cheap filling materials to obtain a flame-retardant polyurethane sound-insulating sponge material....
Claims
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IPC IPC(8): C08L75/04C08K9/04C08K5/3492C08K5/136C08K3/32C08K5/523C08K5/50
CPCC08K9/08C08K3/32C08K5/136C08K5/34922C08K5/50C08K5/523C08K2003/323C08L2201/02C08L2203/14C08L75/04
Inventor 樊军王秋英李月文申宝兵
Owner JIANGSU ZHONGSHAN CHEM