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Method for producing building material by using polystyrene/cotton straw/gypsum

A technology of cotton stalks and polystyrene, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of toxic substances, safety hazards, impacts of climate change, etc., and achieve the goal of highlighting technological progress Effect

Inactive Publication Date: 2012-11-14
XINJIANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of energy-saving standards, the building envelope mainly adopts external thermal insulation, and the thermal insulation materials used mainly include molded polystyrene foam (EPS), extruded polystyrene foam (XPS), rubber powder polymer Benzene particles and polyurethane rigid foam materials, these materials only have a single thermal insulation performance, and their fire resistance, compression resistance, and crack resistance are poor. Affected by climate change, they are likely to cause safety hazards, and they will produce toxic substances when burned, which is difficult to Meet fire protection and environmental protection requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 100 parts of construction gypsum, 3 parts of cotton straw scraps, 1.5 parts of polystyrene granules, 36 parts of blast furnace slag, 24 parts of steel slag, 70 parts of water, and 0.1 part of retarder; among them, the length of cotton straw scraps is 5 mm, and the width is 2.0 mm. ; The particle size of blast furnace slag and steel slag is 4mm; the particle size of polystyrene particles is 4mm, and the bulk density is 20kg / m 3 , 7-day compressive strength 1.5MPa, bulk density 840kg / m 3 ; During production, first put cotton straw scraps, slag and steel slag in a mixer and stir for 45 seconds, then add gypsum and continue stirring for 40 seconds, after adding water and pre-treated polystyrene particles, add retarder and stir for 90 seconds, The finished composite building material is obtained; the polystyrene particles need to be pretreated: first put 95 parts of acrylate emulsion and 50 parts of water in a container, mix well, add polystyrene particles, and take out...

Embodiment 2

[0018] Take 100 parts of construction gypsum, 1 part of cotton straw scraps, 2.5 parts of polystyrene granules, 36 parts of blast furnace slag, 24 parts of steel slag, 60 parts of water, and 0.1 part of retarder; among them, the length of cotton straw scraps is 5 mm, and the width is 2.0 mm. ; The particle size of slag and steel slag is 4.5mm; the particle size of polystyrene particles is 4.5mm, and the bulk density is 20kg / m 3 , 7-day compressive strength 2.2MPa, apparent density 850kg / m 3 ; During production, first put the cotton straw scraps, slag and steel slag in the mixer and stir for 55S, then add gypsum and continue stirring for 45S, after adding water and pre-treated polystyrene particles, add retarder and stir for 80S , to obtain the finished composite building material; wherein the polystyrene particles need to be pretreated: first put 95 parts of acrylate emulsion and 50 parts of water in a container, mix well, add polystyrene particles, and take out the polystyren...

Embodiment 3

[0020] Take 100 parts of cement, 1 part of cotton straw scraps, 2.5 parts of polyphenylene particles, 36 parts of blast furnace slag, 24 parts of steel slag, and 50 parts of water; the length of cotton straw scraps is 5mm, and the width is 2.0mm; the particle size of slag and steel slag is 3.8mm ; Polystyrene particle size 3.8mm, bulk density 18kg / m 3 , 7-day compressive strength 9.0MPa, apparent density 1040kg / m 3 ; During production, firstly put the cotton stalk fragments, slag and steel slag in the mixer and stir for 50 seconds, then add cement and continue to stir for 48 seconds, after adding water and pre-treated polystyrene particles, stir for 70 seconds to obtain the finished compound Building materials; the polystyrene particles need to be pretreated: first put 95 parts of acrylate emulsion and 50 parts of water in a container, mix well, add polystyrene particles, stir for 2 minutes, take out the polystyrene particles and then add use.

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Abstract

The invention provides a method for producing a building material by using polystyrene / cotton straw / gypsum. The building material is prepared from the following components in parts by weight: 90-110 parts of building gypsum or cement or 100 parts of gypsum and 10-20 parts of cement, 1-10 parts of cotton straw crushed aggregate, 1-12 parts of polystyrene particles, 40-70 parts of blast furnace slag or steel slag or 20-40 parts of slag and 20-30 parts of steel slag, 50-80 parts of water or 0.1-0.5 parts of retarder. The production method comprises the steps of firstly stirring cotton straw crushed aggregate, slag or steel slag or slag and steel slag in a stirrer for 45-60s, then adding gypsum or cement or gypsum and cement, continuously stirring for 30-60s, adding water and polystyrene particles, adding retarder according to the requirement, and stirring for 60-90s to obtain the finished product of composite building material.

Description

technical field [0001] The invention relates to an environment-friendly new building material technology, in particular to a method for producing and processing composite building materials using polystyrene particles, cotton straw scraps, cement or gypsum as a matrix. Background technique [0002] With the continuous improvement of energy-saving standards, the building envelope mainly adopts external thermal insulation, and the thermal insulation materials used mainly include molded polystyrene foam (EPS), extruded polystyrene foam (XPS), rubber powder polystyrene, etc. Benzene particles and polyurethane rigid foam materials, these materials only have a single heat insulation performance, and their fire resistance, compression resistance, and crack resistance are poor. Affected by climate change, they are likely to cause safety hazards, and they will produce toxic substances when burned, which is difficult to Meet the requirements of fire protection and environmental protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/24C04B16/08
CPCY02W30/91
Inventor 冯勇何金春罗立权晋强
Owner XINJIANG AGRI UNIV
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