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A high-strength flame-retardant polyphenyl resin and its application in the preparation of thermal insulation boards

A polyphenyl resin, high-strength technology, applied to high-strength flame-retardant polyphenyl resin and its application in the preparation of thermal insulation boards, can solve the problems of weak load-bearing capacity, reduced flame retardant performance of thermal insulation boards, low strength and the like , to achieve the effect of improving strength and toughness, improving strength and strength

Active Publication Date: 2022-01-14
南通杰西卡新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The thermal insulation board is prepared by foaming polymer resin and has a cell structure, which makes the thermal insulation board have high heat insulation and sound absorption performance. It is widely used in building wall insulation, but the existing thermal insulation board has low strength. The load-bearing capacity is weak, and the existing high-strength insulation boards are usually made of polystyrene resin, and the strength of polystyrene itself is low, which affects the overall strength of the foam board, thereby affecting its load-bearing performance, and the polystyrene insulation board The material is brittle and easily damaged and cracked
[0003] Because the insulation board is usually fixed on the wall, it is easy to burn when it catches fire. In the prior art, the flame retardant is usually added directly in the process of polymer foaming to prepare the insulation board, because the flame retardant is difficult to mix with the polymer. Tolerance, and dispersion through physical action, it is easy to cause uneven dispersion of flame retardants, which in turn reduces the overall flame retardancy of the prepared insulation board

Method used

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  • A high-strength flame-retardant polyphenyl resin and its application in the preparation of thermal insulation boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The specific preparation process of high-strength flame-retardant polyphenyl resin is as follows:

[0035] Step 1: α-allyl glyceryl ether and phosphorus oxychloride are added to the reaction tank at the same time according to the ratio of the amount of substances in the ratio of 1:1.16, wherein the tail end of the condenser tube provided in the reaction tank is passed into the sodium hydroxide The solution is used to absorb the generated hydrogen chloride gas, and the temperature is raised to 50°C for reflux reaction for 4 hours, and then the product is subjected to rotary evaporation to remove the unreacted phosphorus oxychloride in it to obtain allyl phosphoric acid, which is subjected to infrared IR analysis , at 543cm -1 The infrared absorption peak of the P-Cl bond appears at 1028cm -1 The infrared absorption peak of the P-O-C bond appeared at 3018cm -1 The stretching vibration peak of the C=C double bond appears at ;

[0036] Step 2: After continuously blowing ...

Embodiment 2

[0043] The concrete preparation process of polyphenyl resin is as follows:

[0044] Step 1: Weigh 1 mol of bismanii brown, add it to water and stir to dissolve, then add 4.35 mol of 4-vinylphenol and 9.4g of phosphoric acid to it, heat up to 220°C for reflux reaction for 5 hours, remove unreacted 4-vinylphenol under reduced pressure, After cooling, add sodium hydroxide solution with a mass concentration of 8%, stir until crystals are precipitated, then filter after standing overnight, wash with ethanol and dry to obtain unsaturated alkaline brown;

[0045] Step 2: Add 1 mol of unsaturated basic brown, 4.3 mol of iodobenzene, 6.8 g of copper powder, 0.12 mol of potassium carbonate and 3 L of nitrobenzene into the reaction tank at the same time, raise the temperature to 170°C for 24 hours under reflux, and then dissolve the product with dichloro Methane is extracted, followed by vacuum distillation to remove the solvent, and the obtained product is sequentially washed with water...

Embodiment 3

[0048] The specific preparation process of the high-strength flame-retardant polyphenyl resin is the same as in Example 1, and the Bismarck brown used in Example 1 is replaced by p-phenylenediamine.

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Abstract

The invention discloses a high-strength flame-retardant polyphenyl resin and its application in the preparation of insulation boards, wherein the specific preparation process of the high-strength flame-retardant polyphenyl resin is as follows: the phosphate-based polyphenyl reaction monomer and the solvent DMSO are simultaneously Add to the reaction tank and stir to dissolve, then add sodium persulfate to it, heat up to 90-95°C for reflux reaction for 1-1.5h, then heat up to 100-110°C for reflux reaction for 4-5h, then filter, wash and dry to obtain high strength Flame retardant polyphenyl resin. The insulation board is based on high-strength high-strength flame-retardant polyphenyl resin. By adding modified glass fiber, the modified glass fiber and high-strength flame-retardant polyphenyl resin are uniformly compounded through chemical bonds, so that the modified glass The fibers are evenly introduced into the insulation board, which improves the strength of the insulation board, and at the same time, the strength of the insulation board is further improved due to the high strength of the matrix resin itself.

Description

technical field [0001] The invention belongs to the field of insulation board preparation, and relates to a high-strength flame-retardant polyphenyl resin and its application in the preparation of insulation boards. Background technique [0002] The thermal insulation board is prepared by foaming polymer resin and has a cell structure, which makes the thermal insulation board have high heat insulation and sound absorption performance. It is widely used in building wall insulation, but the existing thermal insulation board has low strength. The load-bearing capacity is weak, and the existing high-strength insulation boards are usually made of polystyrene resin, and the strength of polystyrene itself is low, which affects the overall strength of the foam board, thereby affecting its load-bearing performance, and the polystyrene insulation board The material is brittle and easily damaged and cracked. [0003] Because the insulation board is usually fixed on the wall, it is eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F130/02C08L43/02C08L51/04C08K5/098C08K5/523C08J9/14
CPCC08F130/02C08J9/141C08J2343/02C08J2451/04C08J2203/14C08J2203/182C08K5/098C08K5/523
Inventor 周玉李晓
Owner 南通杰西卡新型材料有限公司
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