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A kind of silicon-containing flame-retardant tung oil-based polyol and its preparation method and application

A flame-retardant polyol technology, applied in chemical instruments and methods, compounds of group 4/14 elements of the periodic table, organic chemistry, etc., can solve problems such as toxic hydrogen halides, secondary damage, etc.

Active Publication Date: 2021-02-02
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the flame retardant process of halogen-containing polyurethane rigid foam, in addition to producing a large amount of smoke, it also produces toxic and corrosive gas hydrogen halide, causing secondary damage, so the use of halogen-containing flame retardants has been restricted by relevant regulations

Method used

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  • A kind of silicon-containing flame-retardant tung oil-based polyol and its preparation method and application
  • A kind of silicon-containing flame-retardant tung oil-based polyol and its preparation method and application
  • A kind of silicon-containing flame-retardant tung oil-based polyol and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] The preparation formula and performance test results of tung oil-based flame-retardant polyurethane rigid foam are shown in Table 1 and Table 2. Combining polyols and isocyanates as main raw materials, the NCO / OH range is 1.05-1.10.

[0049] The specific operation is as follows: mix the combined polyol and additives evenly under the condition of rapid stirring, then stir with isocyanate under the condition of rapid stirring for 10-20s, the speed is 2000-2500r / min, pour it into the mold, and mature for 24 hours .

[0050] The isocyanate is polymethyl polyphenyl polyisocyanate (PAPI), and the trade name is PM-200 of Yantai Wanhua Polyurethane Co., Ltd.

Embodiment 1

[0052] Glycerin: tung oil in molar ratio=8:1 and catalyst sodium methoxide (accounting for 0.75% of the total mass of tung oil and glycerol) were mixed and heated to 190°C, maintaining the reaction temperature and stirring for 3h. After the reaction was completed, cool to room temperature and let stand to separate layers, separate the upper layer, wash with water, neutralize, extract with ethyl acetate, and then distill under reduced pressure to obtain lycic acid monoglyceride. Glycerol monoglyceride (abbreviated as GTO), hydrogen peroxide, acetic acid and p-toluenesulfonic acid monohydrate (molar ratio: n(GTO):n(H 2 o 2 ):n(CH 3 COOH):n(TsOH)=2:1:1.5:0.1) for epoxidation reaction, the epoxidation temperature is 55°C, and the reaction time is 5h. After the reaction is over, let stand to separate and separate the oil phase , washed with water, neutralized, extracted with ethyl acetate, and distilled under reduced pressure to obtain epoxidized oleic acid monoglyceride.

[005...

Embodiment 2

[0055] Glycerin: tung oil in molar ratio=8:1 and catalyst sodium methoxide (accounting for 0.75% of the total mass of tung oil and glycerol) were mixed and heated to 190°C, maintaining the reaction temperature and stirring for 3h. After the reaction was completed, cool to room temperature and let stand to separate layers, separate the upper layer, wash with water, neutralize, extract with ethyl acetate, and then distill under reduced pressure to obtain lycic acid monoglyceride. Glycerol monoglyceride, hydrogen peroxide, acetic acid and p-toluenesulfonic acid monohydrate (molar ratio: n(GTO):n(H 2 o 2 ):n(CH 3 COOH):n(TsOH)=2:1:1.5:0.1) for epoxidation reaction, the epoxidation temperature is 55°C, and the reaction time is 5h. After the reaction is over, let stand to separate and separate the oil phase , washed with water, neutralized, extracted with ethyl acetate, and distilled under reduced pressure to obtain epoxidized oleic acid monoglyceride.

[0056] Epoxy lycic acid m...

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Abstract

A silicon-containing flame-retardant tung oil-based polyol and its preparation method and application, wherein tung oil is subjected to alcoholysis reaction to obtain tung oil monoglyceride, and tung oil monoglyceride is obtained after epoxidation of tung oil monoglyceride , and finally utilize the ring-opening reaction of the epoxy group to introduce the flame-retardant structure containing 3-aminopropyltriethoxysilane into the structure of the oleic acid monoglyceride to obtain the target product. The thermal decomposition products of rigid polyurethane foam prepared from the silicon-containing flame-retardant tung oil-based polyol of the present invention are mainly carbon dioxide, water vapor and silicon dioxide, so it is a low-toxic polyurethane rigid foam.

Description

technical field [0001] The invention belongs to the technical field of structural vegetable oil-based flame-retardant polyols, and in particular relates to a silicon-containing flame-retardant tung oil-based polyol and its preparation method and application. Background technique [0002] With the increase of high-rise buildings in our country, the demand for building wall insulation materials is increasing. Polyurethane rigid foam has been widely used as an insulation material for building walls due to its excellent insulation properties, good thermal insulation properties, and relatively low price. The main raw materials used to produce rigid polyurethane foam include isocyanate, polyol and other additives. The upstream raw materials of traditional polyols mostly come from resources such as oil and natural gas, but with the energy shortage crisis and people's increasing awareness of environmental protection, the development and utilization of renewable resources to manufac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18C08G18/67C08J9/14C08G101/00
CPCC07F7/1892C08G18/678C08J9/146C08J2203/142C08G2110/0025
Inventor 张猛周威贾普友周永红
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY