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Rice straw-polyurethane/rock wool composite partition board and preparation method thereof

A technology of rice straw and composite partition wall, which is applied in the direction of coating, inorganic raw material rayon, lignin coating, etc., can solve the problems of poor fire resistance, high density, and difficulty in improving the quality of partition boards.

Inactive Publication Date: 2018-03-09
ANHUI EMINENT BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing partition boards often have the defects of high density and poor fire resistance, which makes it difficult to improve the quality of partition boards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] The invention provides a method for preparing a rice straw-polyurethane / rock wool composite partition board, comprising:

[0013] 1) The rice straw is crushed and broomified to obtain straw fiber, and then the straw fiber, yellow dextrin, foaming agent, polyurethane, triethylenediamine, dimethylsiloxane, tributyltin, ethylene glycol Carrying out a foaming reaction to produce a foam;

[0014] 2) Dolomite, basalt, attapulgite, nano-talc powder, white carbon black, and urea are melted, drawn, and cooled to obtain foamed rock wool fibers, and then the foamed rock wool fibers are solidified through an adhesive, Compress to make rock wool core;

[0015] 3) Coating the foam on the surface of the rock wool board core, and then cooling to prepare the rice straw-polyurethane / rock wool composite partition wall board.

[0016] In step 1) of the present invention, the consumption of each material can be selected in a wide range, but in order to make the composite partition wall pa...

Embodiment 1

[0028] 1) The rice straw is crushed and broomified to obtain straw fiber, and then the straw fiber, yellow dextrin, foaming agent (composed of sodium bicarbonate and azodicarbonamide with a weight ratio of 1:1.2), polyurethane , triethylenediamine, dimethylsiloxane, tributyltin, and ethylene glycol in accordance with the weight ratio of 100:13:10:70:3:10:1.3:22 for foaming reaction (foaming temperature is 230°C , the foaming time is 4h) to obtain foam;

[0029] 2) Melt dolomite, basalt, attapulgite, nano-talc powder, white carbon black, and urea in a weight ratio of 100:110:58:22:12:35 (melting temperature is 1680°C, melting time is 3h) , wire drawing, and cooling to obtain foamed rock wool fibers (0.5mm in diameter), and then the foamed rock wool fibers are cured at 195°C through adhesives (phenolic resin and / or epoxy resin), and then solidified at 5MPa Compress to make rock wool board core (the content of binder is 15% by weight);

[0030] 3) Coat the foam on the surface o...

Embodiment 2

[0032] 1) The rice straw is crushed and broomified to obtain straw fiber, and then the straw fiber, yellow dextrin, foaming agent (composed of sodium bicarbonate and azodicarbonamide with a weight ratio of 1:1), polyurethane , triethylenediamine, dimethylsiloxane, tributyltin, and ethylene glycol in accordance with the weight ratio of 100:10:8:66:2:8:1:18 for foaming reaction (foaming temperature is 220°C , the foaming time is 3h) to obtain foam;

[0033] 2) Melt dolomite, basalt, attapulgite, nano-talc powder, white carbon black, and urea in a weight ratio of 100:100:55:17:8:33 (melting temperature is 1660°C, melting time is 2h) , wire drawing, and cooling to obtain foamed rock wool fibers (0.3mm in diameter), and then the foamed rock wool fibers are cured at 190°C through adhesives (phenolic resin and / or epoxy resin), and then solidified at 4MPa Compress to make rock wool board core (the content of binder is 12% by weight);

[0034] 3) Coat the foam on the surface of the r...

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Abstract

The invention discloses a rice straw-polyurethane / rock wool composite partition board and a preparation method thereof. The preparation method comprises the following steps: 1) breaking rice straws, brooming to obtain straw fibers, and then carrying out foaming reaction on the straw fibers, yellow dextrin, a foaming agent, polyurethane, triethylenediamine, dimethyl siloxane, tributyltin and ethylene glycol, so as to obtain a foamed object; 2) carrying out melting, wire drawing and cooling on dolomite, basalt, attapulgite, nano talcum powder, white carbon black and urea, so as to obtain foamedrock wool fibers, and then solidifying and compressing the foamed rock wool fibers by virtue of a bonding agent, so as to obtain a rock wool board core; and 3) coating the foamed object on the surfaceof the rock wool board core, and then cooling, so as to obtain the rice straw-polyurethane / rock wool composite partition board. The composite partition board has excellent light weight and fireproofeffects, and the preparation method has the advantages of simple working procedures and available raw materials.

Description

technical field [0001] The invention relates to a partition board, in particular to a rice straw-polyurethane / rock wool composite partition board and a preparation method thereof. Background technique [0002] Partition wall board is a kind of board commonly used in existing construction projects. It not only plays the role of partitioning space, but also the ideal partition board also needs to meet the requirements of moisture resistance, earthquake resistance, fire resistance, fire insulation, small footprint, good strength, and convenient construction. Etc. However, the existing partition boards often have the defects of high density and poor fire resistance, which makes it difficult to improve the quality of the partition boards. Contents of the invention [0003] The purpose of the present invention is to provide a rice straw-polyurethane / rock wool composite partition board and its preparation method. The composite partition board has excellent light weight and fire-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D197/02C09D7/63D01F9/08C08J9/08C08J9/10C08J7/04C08L63/00C08L61/06C08K7/26
CPCC08J7/04C08J9/0023C08J9/0028C08J9/0042C08J9/0052C08J9/0061C08J9/08C08J9/103C08J2203/02C08J2203/04C08J2203/18C08J2361/06C08J2363/00C08J2397/02C08J2405/16C08J2461/06C08J2463/00C08J2497/02C08K7/26C08L61/06C08L63/00C09D197/02D01F9/08C08L5/16C08L75/04C08K5/00C08K5/17C08K5/54C08K5/57C08K5/053
Inventor 万贤虎
Owner ANHUI EMINENT BUILDING MATERIALS TECH
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