Organic silicon modified vegetable oil-based polyol, preparation method thereof and application thereof

A vegetable oil-based, organosilicon technology, applied in the field of polyurethane foam, can solve the problems of increasing production cost and reducing the physical properties of polyurethane foam, and achieves the effects of high thermal stability, strong reactivity and good mechanical properties

Inactive Publication Date: 2020-04-03
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding high doses of inorganic flame retardants not only increases production costs, but also reduces the physical properties of polyurethane foam

Method used

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  • Organic silicon modified vegetable oil-based polyol, preparation method thereof and application thereof
  • Organic silicon modified vegetable oil-based polyol, preparation method thereof and application thereof
  • Organic silicon modified vegetable oil-based polyol, preparation method thereof and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0040] The preparation formula and performance test results of the polyurethane foam are shown in Table 1 and Table 2. The main raw materials are compound polyols and isocyanates.

[0041] The specific operation is as follows: Mix the compound polyol and the auxiliary under the condition of rapid stirring to make it uniform, and then stir with the isocyanate under the condition of rapid stirring for 20~30s, the rotation speed is 2000~2500r / min, pour it into the mold, and mature it. 12h.

[0042] The isocyanate is polymethyl polyphenyl polyisocyanate (PAPI), and the trade name is PM-200 of Yantai Wanhua Polyurethane Co., Ltd.

[0043] In the present invention, silicon dioxide is coated with ammonium molybdate to form a silicon dioxide microcapsule flame retardant to form a silicon-nitrogen-molybdenum flame retardant system. At the same time, using tung oil as raw material, through transesterification reaction, epoxidation reaction and ring-opening reaction, a silicone-modifie...

Embodiment 1

[0046] Epoxidized eleostearic acid monoglyceride and N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane in molar ratio n 环氧基团 : n N-(β-氨乙基)-γ-氨丙基甲基二甲氧基硅烷 =7:3 mixing, heating to 70°C, and reacting for 2 h under nitrogen protection to obtain organosilicon modified tung oil-based polyol. According to the formula shown in Table 1, 100 parts by mass of polyether polyol PPG4110 and additives are mixed uniformly, and then stirred with 118 parts by mass of isocyanate for 20-30 s at a rotational speed of 2000-2500 r / min, poured into a mold, and heated at 60° C. aged for 12h in a blast drying oven.

Embodiment 2

[0048] Epoxidized eleostearic acid monoglyceride and N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane in molar ratio n 环氧基团 : n N-(β-氨乙基)-γ-氨丙基甲基二甲氧基硅烷 = 7:3 mixing, heating to 70°C, and reacting for 2 h under nitrogen protection to obtain organosilicon-modified tung oil-based polyol. According to the formula shown in Table 1, firstly combine 25 parts by mass of N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane-modified tung oil-based polyol with 75 parts by mass of polyether polyol Alcohol PPG4110 and additives are mixed evenly, and then stirred with 118 parts by mass of isocyanate for 20 to 30 s at a speed of 2000 to 2500 r / min, poured into a mold, and matured in a blast drying oven at 60°C for 12 hours.

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Abstract

The invention discloses organic silicon modified vegetable oil-based polyol, a preparation method thereof and application thereof. The method comprises the steps of mixing N-(beta-aminoethyl)-gamma-aminopropylmethyldimethoxysilane, and epoxy eleostearic acid monoglyceride with an epoxy value of 3% according to a molar ratio of epoxy groups to N-(beta-aminoethyl)-gamma-aminopropylmethyldimethoxysilane of 2: 1 to 3: 1, and carrying out a ring-opening reaction to obtain the organic silicon modified vegetable oil-based polyol. The polyol replaces part of polyether polyol and is uniformly stirred with a silicon dioxide microcapsule flame retardant to prepare compound polyol, the compound polyol is used for preparing polyurethane foam, the prepared polyurethane foam has good mechanical properties, thermal stability and flame retardance, and the limit oxygen index can reach 23.5%.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam, and in particular relates to an organosilicon-modified vegetable oil-based polyol and a preparation method and application thereof. Background technique [0002] Polyurethane (PU) is a class of compounds with polyurethane structure prepared from polyols and polyisocyanates as the main raw materials. It is widely used in coatings, adhesives, elastomers, foams and other materials. The raw materials for the production of traditional polyurethane mainly come from non-renewable petrochemical resources. At the same time, due to the continuous rise of crude oil prices and the increasingly serious global problems such as the greenhouse effect and environmental pollution, the use of renewable resources to replace petrochemical resources for the preparation of polyurethane materials has caused scientific research. This is also one of the future development trends. [0003] As a renewable resourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/38C08K9/02C08K3/36C08K3/28C08J9/14C07F7/18C08G101/00
CPCC08G18/6666C08G18/48C08G18/3893C08K9/02C08K3/36C08K3/28C08J9/146C07F7/1804C07F7/1892C08J2203/142C08G2101/00C08G18/4825C08G18/6696C08G18/246C08G18/7664C08J2375/04C08K9/10C08K5/0066C08L75/04
Inventor 张猛周威周永红郝树杰贾普友
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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