Rosin polyester polyol for flame-retardant rigid polyurethane foam plastic and preparation method and application thereof

A rigid polyurethane and foam technology, applied in the chemical modification of natural resins, etc., can solve the problems of corrosiveness, high price and instability of foaming equipment, and achieve good compressive strength, low cost, high thermal stability and resistance. flammable effect

Inactive Publication Date: 2010-11-24
广西鼎弘树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the homopolymer and the copolymer of polyethylene, vinylidene chloride are unstable, emit poisonous HCl gas in foaming process, have corrosivity to foaming equipment; Acrylonitrile mixed monomers are copolymerized to prepare flame-retardant polyols. The polyurethane foams produced by it have certain flame-retardant properties, but tribromostyrene is difficult to synthesize, expensive, and contains

Method used

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  • Rosin polyester polyol for flame-retardant rigid polyurethane foam plastic and preparation method and application thereof
  • Rosin polyester polyol for flame-retardant rigid polyurethane foam plastic and preparation method and application thereof
  • Rosin polyester polyol for flame-retardant rigid polyurethane foam plastic and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0054] The preparation formula and performance test results of flame-retardant rosin-based rigid polyurethane foam are shown in the attached table. Combination polyol and isocyanate are used as main raw materials. When foaming, it is formulated at a ratio of NCO / OH molar ratio of 1.2 to 2.5, and it is produced by conventional methods in combination with common additives. The specific operation is as follows: first stir and disperse the combined polyol evenly at high speed, then mix with isocyanate and stir at high speed for 20-30s at a speed of 3000-3500r / min, pour it into a mold, and cure for 48h.

[0055] The isocyanate can be selected from: toluene diisocyanate, xylene diisocyanate, polymethyl polyphenyl polyisocyanate (PAPI), preferably PAPI, the trade name is: Bayer's Desmodur N, 44V20L, 44V10L, etc.; Huntsman's Superace5005, 2085, etc.; DOW’s PAPI27; BASF’s MR200; Yantai Wanhua’s PM2010, etc. When foaming, the molar ratio of isocyanate and combined polyol is 1.2-2.5 accord...

Embodiment 1

[0058] Combine 40 parts of acrylpimaric acid, 10 parts of polyol (n 1 =1), 0.2 parts by mass of p-toluenesulfonic acid, add a 250mL three-necked flask, heat and increase, control the head temperature not to exceed 102 ℃, continue to increase the temperature to 220 ℃, and then continue to react at 220-240 ℃ for 5-9 hours, when the acid When the value is 10-20mg / g, reduce the temperature to 180℃, vacuum, gradually increase the vacuum degree to 95kPa, vacuumize for about 1-2h, then take a sample to measure the acid value, when the acid value is ≤3mg / g, the temperature is reduced to 100℃, Discharge to obtain flame-retardant rosin polyester polyol. Then, according to the preparation formula of the rigid polyurethane foam in Table 1, the combined polyol was obtained, stirred evenly at high speed, then mixed with isocyanate and stirred at high speed for 20-30s at a rotation speed of 3000-3500r / min, poured into a mold, and cured for 48h.

Embodiment 2

[0060] Combine 40 parts maleepimaric acid and 40 parts polyol (n 1 =3), 0.1 parts by mass of zinc oxide, add a 250mL three-necked flask, heat up, control the head temperature not to exceed 102 ℃, continue to increase the temperature to 220 ℃, and then continue to react at 220-240 ℃ for 5-9h, when the acid value is at At 10-20mg / g, reduce the temperature to 180℃, vacuum, gradually increase the vacuum degree to 95kPa, vacuum for about 1-2h, then take a sample to measure the acid value, when the acid value is less than or equal to 3mg / g, cool to 100℃, discharge The flame-retardant rosin polyester polyol is obtained. Then, according to the preparation formula of the rigid polyurethane foam in Table 1, the combined polyol was obtained, stirred evenly at high speed, then mixed with isocyanate and stirred at high speed for 20-30s at a rotation speed of 3000-3500r / min, poured into a mold, and cured for 48h.

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Abstract

The invention discloses rosin polyester polyol for flame-retardant rigid polyurethane foam plastic and a preparation method and application thereof. The flame-retardant rosin polyester polyol is prepared by performing esterification reaction on rosin binary acid or rosin ternary acid and small-molecular flame-retardant polyol. The prepared flame-retardant rosin polyester polyol and general polyether glycol and an isocyanate compound are foamed to obtain the flame-retardant rosin-based rigid polyurethane foam plastic in the presence of other auxiliary agents. As the flame-retardant rosin polyester polyol contains a rosin phenanthrene ring rigid structure and a certain amount of flame-retardant nitrogen and phosphorus elements, when the flame-retardant rosin polyester polyol is used in the flame-retardant rigid polyurethane foam plastic, the flame-retardant rigid polyurethane foam plastic has higher thermal stability and flame retardancy and high compressive strength, has an oxygen index of 28 to 31 percent and is applicable to building, heat preservation and special occasions.

Description

Technical field [0001] The invention relates to a preparation process of a flame-retardant rosin-based rigid polyurethane foam, and mainly relates to the structure and a preparation method of a flame-retardant rosin polyester polyol, and a flame-retardant rosin polyester polyol for preparing rigid polyurethane foam method. Background technique [0002] Polyurethane foam is currently the best thermal insulation material in the world. Because developed countries such as Europe and the United States attach great importance to building energy conservation, rigid polyurethane foam has been widely used in building roofs, walls, ceilings, floors, doors and windows in these countries. Wait. However, polyurethane foam has a low density and a large specific surface area. Compared with non-foam materials, it is easier to burn, burning and decomposing to produce a lot of toxic smoke. It will burn and decompose when exposed to fire. When burning, it releases a large amount of heat and produ...

Claims

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Application Information

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IPC IPC(8): C08G63/692C09F1/04C08G18/68C08L75/06C08G101/00
Inventor 周永红张猛胡立红
Owner 广西鼎弘树脂有限公司
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