Method for preparing phosphorous-nitrogen synergistic wood fire retardant

A flame retardant and wood technology, applied in the field of flame retardants, can solve the problems that cannot fully meet the needs of the market, and achieve the effects of improving chemical atom utilization, high flame retardant efficiency, and reducing side effects such as salting out and hygroscopicity Effect
CN105538451AActive Publication Date: 2016-05-04河南森远科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
河南森远科技有限公司
Publication Date
2016-05-04

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Abstract

The invention discloses a method for preparing a phosphorous-nitrogen synergistic wood fire retardant. The method includes the steps that trihydroxymethylaminomethane hydrochloride and phosphorus oxychloride are mixed in organic solvent at the temperature of 20 DEG C; the temperature is increased to 65-100 DEG C for heat preservation reaction for four to six hours, then the temperature is decreased, and an acid-binding agent of the equal mole is added; cooling and filtering are conducted, phosphoric acid is added into filtrate, filtering is conducted again, and vacuum drying is performed on a filter cake to obtain solid caged white amine phosphate hydrophosphate; and then water is added, tetrakis hydroxymethyl phosphonium phosphate and dodecy dimethyl benzyl ammonium bromide are added separately, and the pH of fire retardant liquid is adjusted to be 5 to 7.5 through ammonium hydroxide or phosphoric acid to obtain the product of the phosphorous-nitrogen synergistic wood fire retardant. The preparation method is simple, low in cost and free of pollution, the product is high in penetrability, good in durability and corrosion prevention function, high in fire-retarding effectiveness and convenient to apply, and large-scale production is easy.
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Description

technical field

[0001] The patent of the invention relates to the technical field of flame retardants such as wood, fiber, paper, coatings, etc., and specifically relates to a preparation method of a phosphorus-nitrogen synergistic wood flame retardant. Background technique

[0002] With the advancement of science and technology and the improvement of people's living standards, the degree of lignification of home furniture, floors and other decorations is getting higher and higher, and the fire hazards and threats that follow are getting bigger and bigger, which greatly promotes the improvement of people's awareness of fire safety. , especially the fire protection and safety protection of antique buildings and wooden structure houses of ethnic minorities in my country is more urgent. Due to the limitations of factors such as process, cost and effect, the current wood flame retardants cannot fully meet the needs of the market. Contents of the invention

[0003] Aiming at th...

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
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