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Natural rubber emulsion modified bamboo particle/magnesium oxychloride composite material and preparation method thereof

A technology of natural rubber latex and composite material, applied in the field of composite material preparation, can solve the problems of synthetic polymer material being difficult to decompose, environmental pollution, unable to take into account multiple properties at the same time, etc., to improve mechanical properties and water resistance, delay initial setting The effect of time and mechanical properties improvement

Active Publication Date: 2022-07-15
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional method can only enhance one of them to a certain extent, and cannot take into account the comprehensive improvement of multiple properties at the same time, and these synthetic polymer materials are not easy to decompose, which will cause pollution to the environment

Method used

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  • Natural rubber emulsion modified bamboo particle/magnesium oxychloride composite material and preparation method thereof
  • Natural rubber emulsion modified bamboo particle/magnesium oxychloride composite material and preparation method thereof
  • Natural rubber emulsion modified bamboo particle/magnesium oxychloride composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A preparation method of natural rubber emulsion modified bamboo scraps / magnesium oxychloride composite material of the present invention, the amount of raw materials added is in parts by mass, comprising the following steps:

[0038] (1) Screening 70-mesh bamboo scraps and drying to a moisture content of 10%.

[0039] (2) adding 0.1 part of sodium lauryl sulfate to 1.8 parts of natural rubber latex, stirring evenly, and leaving for 5 days to fully react to obtain a modified natural rubber latex.

[0040] (3) Under normal temperature and pressure, 240.35 parts of magnesium chloride, 300.78 parts of magnesium sulfate and 468 parts of water are made into brine.

[0041] (4) 600.75 parts of magnesium oxide and 160.28 parts of dried bamboo scraps were added to brine and stirred evenly to obtain slurry A.

[0042] (5) Add 1.9 parts of the modified natural rubber latex into slurry A and stir rapidly at a rotational speed of 900 r / min for 300 seconds to obtain slurry B.

[0043...

Embodiment 2

[0045] A preparation method of natural rubber emulsion modified bamboo scraps / magnesium oxychloride composite material of the present invention, the amount of raw materials added is in parts by mass, comprising the following steps:

[0046] (1) Screening 70-mesh bamboo scraps and drying to a moisture content of 10%.

[0047] (2) adding 0.2 part of sodium lauryl sulfate to 3.6 parts of natural rubber latex, stirring evenly, and leaving for 5 days to fully react to obtain a modified natural rubber latex.

[0048] (3) Under normal temperature and pressure, 240.35 parts of magnesium chloride, 300.78 parts of magnesium sulfate and 468 parts of water are made into brine.

[0049] (4) 600.75 parts of magnesium oxide and 160.28 parts of dried bamboo scraps were added to brine and stirred evenly to obtain slurry A.

[0050] (5) Add 3.8 parts of modified natural rubber latex into slurry A, stir evenly, stir rapidly, and stir for 300 seconds at a rotational speed of 900 r / min to obtain ...

Embodiment 3

[0053] A preparation method of natural rubber emulsion modified bamboo scraps / magnesium oxychloride composite material of the present invention, the amount of raw materials added is in parts by mass, comprising the following steps:

[0054] (1) Screening 70-mesh bamboo scraps and drying to a moisture content of 10%.

[0055] (2) Add 0.3 parts of sodium lauryl sulfate to 5.4 parts of natural rubber latex, stir evenly, and leave for 5 days to fully react to obtain a modified natural rubber latex.

[0056] (3) Under normal temperature and pressure, 240.35 parts of magnesium chloride, 300.78 parts of magnesium sulfate and 468 parts of water are made into brine.

[0057] (4) 600.75 parts of magnesium oxide and 160.28 parts of dried bamboo scraps were added to brine and stirred evenly to obtain slurry A.

[0058] (5) Add 5.7 parts of the modified natural rubber latex into slurry A and stir rapidly at a rotational speed of 900 r / min for 300 seconds to obtain slurry B.

[0059] (6) ...

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Abstract

The invention discloses a natural rubber emulsion modified bamboo particle / magnesium oxychloride composite material and a preparation method thereof.The preparation method comprises the steps that bamboo particles are sieved and dried, lauryl sodium sulfate is added into natural rubber emulsion to be modified, magnesium chloride, magnesium sulfate and water are mixed to be prepared into saline water, magnesium oxide and the dried bamboo particles are added into the saline water to be stirred, and the natural rubber emulsion modified bamboo particle / magnesium oxychloride composite material is obtained. And adding the modified natural rubber latex into the slurry A, stirring to obtain slurry B, pouring the slurry B into a mold, curing, standing, curing, and demolding to obtain the natural rubber latex modified bamboo particle / magnesium oxychloride composite material. The natural rubber emulsion modified bamboo particle / magnesium oxychloride composite material disclosed by the invention is good in mechanical strength and water resistance, and the preparation method is simple in process, green, environment-friendly and low in cost.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a method for enhancing the mechanical properties and water resistance of a plant fiber / magnesium oxychloride composite material by natural rubber emulsion, in particular to a natural rubber emulsion modified bamboo scrap / magnesium oxychloride composite material and its preparation method. Background technique [0002] Bamboo scrap / magnesium oxychloride composite material is a composite material prepared from magnesium oxychloride cementitious material as the main coagulation material, bamboo scrap as the filling material, and adding a certain proportion of admixtures and additives. This composite material is popular for its low energy consumption, rapid setting and excellent wear resistance. However, in humid environments or environments with more rainy climates, bamboo scraps / magnesium oxychloride composites have shortcomings such as large mass loss, poor w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B111/27
CPCC04B28/32C04B2111/27C04B2111/00025C04B2111/00017C04B2111/00224C04B2201/50C04B24/34C04B18/265C04B24/16Y02W30/91
Inventor 左迎峰孙宝荣李萍吴义强李新功郑龙
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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