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Pregelatinized starch with excellent thixotropic smoothness, and preparation method thereof

A pre-gelatinized starch and smooth technology, applied in the direction of filling slurry, etc., can solve the problems of poor thixotropic smoothness, laborious scraping, sticky hand feeling, etc., achieve good thixotropy and smoothness, and reduce material consumption , Improve the effect of construction speed

Active Publication Date: 2021-06-11
广东龙湖科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a pregelatinized starch with good thixotropic smoothness, aiming to solve the problems of poor thixotropic smoothness of pregelatinized starch, sticky hand feeling and laborious scraping when used in putty

Method used

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  • Pregelatinized starch with excellent thixotropic smoothness, and preparation method thereof
  • Pregelatinized starch with excellent thixotropic smoothness, and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0029] A pregelatinized starch with good thixotropic smoothness, comprising the following components in parts by mass:

[0030] 100 parts of starch, 1 part of lithium magnesium silicate, 0.02 parts of sodium pyrophosphate, 0.3 parts of surfactant, and 15 parts of water.

[0031] Wherein, the surfactant is sodium α-alkenyl sulfonate and cocamidopropyl betaine with a mass ratio of 95:5.

[0032] The preparation method of the good pregelatinized starch of this thixotropic smoothness is as follows:

[0033] 1) Dissolve lithium magnesium silicate in water, add sodium pyrophosphate, stir and disperse for 240 minutes, so that the lithium magnesium silicate is fully activated and dissociated;

[0034] 2), add a surfactant to the obtained in step 1), and disperse for 30 minutes to obtain a lithium magnesium silicate solution;

[0035] 3), adding the lithium magnesium silicate solution obtained in step 2) into the starch, stirring and dispersing for 60 minutes, and then standing for 1...

Embodiment 2

[0039] The difference with embodiment 1 is:

[0040] The pregelatinized starch with good thixotropic smoothness of the present embodiment comprises the composition of the following parts by mass:

[0041] 100 parts of starch, 0.5 part of lithium magnesium silicate, 0.01 part of sodium pyrophosphate, 0.1 part of surfactant, and 5 parts of water.

[0042] The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0044] The difference with embodiment 1 is:

[0045] The pregelatinized starch with good thixotropic smoothness of the present embodiment comprises the composition of the following parts by mass:

[0046] 100 parts of starch, 1.2 parts of lithium magnesium silicate, 0.03 parts of sodium pyrophosphate, 0.5 parts of surfactant, and 10 parts of water.

[0047] The rest are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to the technical field of building materials, and concretely relates to a pregelatinized starch with excellent thixotropic smoothness, and a preparation method thereof. The pregelatinized starch with excellent thixotropic smoothness comprises, by mass, 100 parts of starch, 0.5-1.5 parts of magnesium lithium silicate, 0.01-0.05 part of sodium pyrophosphate, 0.1-1 part of a surfactant and 5-25 parts of water. Compared with like products in the prior art, the pregelatinized starch has the advantages that the problems that when the pregelatinized starch is used for putty at present, the hand feeling is slightly sticky, and batch scraping is strenuous are solved, the construction speed is increased, and the material consumption per unit area is reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a pregelatinized starch with good thixotropic smoothness and a preparation method thereof. Background technique [0002] Starch is a natural polymer that exists in crops such as potatoes, corn, rice, and cassava. It is a renewable resource. The deep processing of starch can not only expand the utilization rate of starch, but also fully develop starch resources, which is conducive to economic growth. And agricultural technology progress also plays a very important role, with significant economic and social benefits. [0003] Generally, starch is modified by physical and chemical means, and can be prepared into starch adhesives with various properties, which are widely used in textile, papermaking, medicine, food, packaging, building materials and other industries. Among them, pregelatinized starch is mainly used as an adhesive for building materials. At present, the p...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08K3/34C08K5/42C08K5/20C08B30/14C09D5/34
CPCC08K3/34C08K5/42C08K5/20C08B30/14C09D5/34C08L3/02
Inventor 郑利文张乐洪永顺
Owner 广东龙湖科技股份有限公司
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