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Novel expansion-type fire retardant

An intumescent flame retardant and flame retardant technology, applied in the field of intumescent flame retardants, can solve the problems of high water solubility, no literature reports, and difficult separation of ammonium chloride, so as to achieve high flame retardant efficiency and environmental protection Friendly, low-halogen effect

Active Publication Date: 2014-01-22
山东兄弟科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this compound has high water solubility, strong alkalinity, and is difficult to separate from the by-product ammonium chloride. Therefore, it is mainly used as a flame retardant for textile fibers at present, and it is difficult to be used as an additive flame retardant for plastics [Hebeish A., Waly A.,Abou-Okeil A.M..Flame retardant cotton.Fire and Materials,1999,23(3):117-123; Chen Sheng, Zheng Qingkang. Research progress of cyclic phosphazene flame retardants. Textile Herald, 2004, 5:92 -96; Allen,C.W.The use of phosphazenes as fire resistant materials.J.Fire Sci.1993,11,320-328;Gao Weiquan,Tang Shujuan,Sun De,etc.Synthesis and properties of hydroxycyclotriphosphazenes derivative flame retardants Research. Dyeing and Finishing Technology, 2008, 30(9): 11-14]
However, there have been no literature reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The synthesis of polyaminocyclotriphosphazene comprises the steps:

[0016] Add 17.4g (0.05mol) of hexachlorocyclotriphosphazene and 150mL of toluene into a 250mL three-necked flask, cool it to about 0°C with an ice-salt water bath, pass ammonia gas under stirring for 12 minutes, filter, and dry the filter cake to obtain White powdery solid—a mixture of aminocyclotriphosphazene and by-product ammonium chloride. Put the above mixture in a drying oven, take it out after polycondensation at 178-182°C for 0.5h, put it in the air and cool it to room temperature. Add 30 mL of deionized water to dissolve for 10 min, filter, wash the filter cake twice with 15 mL×2 deionized water, and then dry at 105-110°C until constant weight to obtain the product. After analysis, the chlorine content of the product is 2.05%, the phosphorus content is 43.38%, the nitrogen content is 50.89%, the hydrogen content is 3.68%, and the solubility is 1.05g / 100mL water.

Embodiment 2

[0018] Flame retardant to polypropylene.

[0019] First use a twin-screw extruder (JS30A type, produced by Yantai Qitong Powder Machinery Co., Ltd.), 79.7 parts of polypropylene (PPH-T03, produced by Sinopec Corporation), 10 parts of polyaminocyclotriphosphazene, and 10 parts of Sike (produced by Wuxi Kang Aite Chemical Co., Ltd.), 0.15 parts of 1010 antioxidant and 0.15 parts of 168 antioxidant are extruded and granulated at 180 ° C ~ 190 ° C, and after the materials are cooled to room temperature, use a flat vulcanizing machine (2G-10T Type, produced by Dongguan Zhenggong Electromechanical Equipment Technology Co., Ltd.) molded at 185°C-190°C and 5MPa pressure, cooled to room temperature and cold-pressed (5MPa) to make a 100×100×3.2mm plate, and then cut into the required Splines to be sized.

[0020] The limiting oxygen index (LOI) and vertical combustion are tested according to GB / T2046-1993. The size of the limiting oxygen index test sample is 100×6.5×3.2mm, and the ins...

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PUM

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Abstract

The invention belongs to the field of chemical and high molecular material auxiliaries, and discloses a novel expansion-type fire retardant. The fire retardant is formed by compounding polyamino cyclotriphosphazene and triglycicy (2-hydroxyethyl) cyanuric acid (seik for short), wherein the polyamino cyclotriphosphazene serves as an acid source and an air source and the seik serves as a carbon source and has the function of an air source at the same time. The mass ratio of the polyamino cyclotriphosphazene to the seik is 20:80-80:20, and preferably the mass ratio is 50:50. The expansion-type fire retardant has good inflaming retarding effects on polypropylene and polyethylene. When the use amount of the fire retardant is 20% of the total mass of the fire retardant material, the vertical burning level of the polyethylene and the polypropylene reaches FV-0(3.2mm). In addition, the chlorinity of the fire retardant is low (lower than 2%), and therefore gas generated by burning only contains little chlorine and environmental friendliness is achieved.

Description

technical field [0001] The present invention relates to a new type of intumescent flame retardant, specifically a compound of polyaminocyclotriphosphazene and tris(2-hydroxyethyl)isocyanurate (Sike for short). The intumescent flame retardant is prepared and belongs to the field of chemicals and polymer material additives. Background technique [0002] Flame retardant is an important additive for polymer materials, and many varieties have been reported. Due to the excellent cost performance, brominated flame retardants are currently one of the most produced organic flame retardants in the world, but the high polymers flame-retardant with brominated flame retardants generate more smoke, corrosive gases and toxic gases when burned , and reduce the anti-ultraviolet stability of the flame-retardant substrate. Some brominated flame retardants (such as polybrominated diphenyl ethers) also have potential hazards to the environment and human health, especially the thermal cracking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L85/02C08K5/3492
CPCC08K5/34924C08L23/06C08L23/12C08L85/02C08L2201/02C08K5/3492
Inventor 唐林生李莉王勇何为
Owner 山东兄弟科技股份有限公司
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