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Method for preparing polymer modified plant fibre cement composite material

A cement composite material and high polymer modification technology, applied in solid waste management, climate sustainability, sustainable waste treatment, etc., can solve the problems of low flexural strength and low elastic modulus

Inactive Publication Date: 2010-07-14
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of low flexural strength and low elastic modulus in existing plant fiber cement composite materials, and provides a preparation method of high polymer modified plant fiber cement composite materials

Method used

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  • Method for preparing polymer modified plant fibre cement composite material

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specific Embodiment approach 1

[0008] Specific Embodiment 1: The high polymer modified plant fiber cement composite material of this embodiment is prepared as follows: 1. Preparation of auxiliary agent: under the conditions of 60-90°C and a stirring speed of 5-100r / min, the Sodium carboxymethyl cellulose is dissolved in water to form a carboxymethyl cellulose aqueous solution with a mass concentration of 2% to 12%, and an inert gas is introduced into the reactor to evacuate the air, and the inert gas protection is maintained, and then carboxymethyl cellulose is added. Potassium persulfate of 1 / 30~1 / 15 of the weight of plain sodium, after potassium persulfate is completely dissolved, then add methyl methacrylate of 1 / 5~2 times the weight of sodium carboxymethyl cellulose to react for 1.5~3.5 hours, Obtain carboxymethyl cellulose-methyl methacrylate graft high polymer emulsion; Two, the carboxymethyl cellulose-methyl methacrylate graft high polymer emulsion that step 1 makes is diluted with water to solid cont...

specific Embodiment approach 2

[0009] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step 2, the carboxymethyl cellulose-methyl methacrylate graft high polymer emulsion that step 1 is made is diluted with water to a solid content of 0.3-0.9% diluent is ready for use. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0010] Specific embodiment three: the difference between this embodiment and specific embodiment one is: in step 2, the carboxymethyl cellulose-methyl methacrylate graft high polymer emulsion that step 1 is made is diluted with water to a solid content of The 0.6% diluent is used for later use. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention relates to a preparation method of high polymer modified vegetable fiber cement compound material, which solves the problem that the prior vegetable fiber cement compound material has the advantages of small antiflex intensity and low elasticity coefficient. The high polymer modified vegetable fiber cement compound material is prepared as follows: firstly, the high polymer assistantis prepared; secondly, the high polymer assistant is diluted; thirdly, the blending is done; fourthly, the shaping and the maintenance refer to the obtainment of the high polymer modified vegetable fiber cement compound material. The high polymer modified vegetable fiber cement compound material of the invention has the advantages of big antiflex intensity, high elasticity coefficient and small density.

Description

technical field [0001] The invention relates to a preparation method of plant fiber cement composite material. Background technique [0002] The plant fiber cement composite material is a composite material made of Portland cement as the main cementing material, plant fiber as the reinforcing material, and certain chemical additives are added under certain process conditions. Plant fiber cement composite materials are widely used because of their low density, low thermal conductivity and good sound insulation performance. [0003] However, the existing plant fiber cement composite materials have the disadvantages of low flexural strength and low elastic modulus. Contents of the invention [0004] The invention aims to solve the problems of low flexural strength and low elastic modulus in existing plant fiber cement composite materials, and provides a preparation method of high polymer modified plant fiber cement composite materials. [0005] The high polymer modified pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/24C04B24/24C04B20/10
CPCC04B24/2641C04B24/383C04B2103/0059C04B28/02Y02W30/91C04B18/24C04B40/0071C04B40/02
Inventor 韩福芹王清文邵博
Owner NORTHEAST FORESTRY UNIVERSITY