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Starch graft polymer and preparation method and application thereof
The invention discloses a starch graft polymer and a preparation method and application thereof. The preparation method of the starch graft polymer comprises the following steps: reacting an unsaturated monomer, water-soluble starch and water in a redox initiation system, and adjusting the pH value of the reaction solution to 7-9 by using alkali to obtain the starch graft polymer, wherein the unsaturated monomer is an unsaturated acid small monomer, or an unsaturated amide small monomer and an unsaturated acid small monomer. According to the invention, the water-soluble starch is used as a starch raw material, a gelatinization step required for preparing a conventional starch graft polymer is not needed, the preparation process is simple, and the cost is low; the starch graft polymer is easily soluble in water and is a clear and transparent aqueous solution. The starch graft polymer is used as a stabilizer of self-leveling mortar, and can prevent the self-leveling mortar from bleeding or segregating and the like so that the self-leveling mortar has better stability.
本发明公开了一种淀粉接枝聚合物及其制备方法和应用。这种淀粉接枝聚合物的制备方法，包括以下步骤：将不饱和单体、水溶性淀粉和水在氧化还原引发体系中进行反应，然后用碱将反应液的pH调至7～9，得到淀粉接枝聚合物；其中，不饱和单体为不饱和酸类小单体，或者是不饱和酰胺小单体和不饱和酸类小单体。本发明以水溶性淀粉为淀粉原料，无需常规淀粉接枝聚合物制备时所需的糊化步骤，制备过程简单，成本低；该淀粉接枝聚合物易溶于水，为澄清透明水溶液。本发明提供的淀粉接枝聚合物用作自流平砂浆的稳定剂，可防止自流平砂浆出现泌水或离析等问题，从而使自流平砂浆具有较好的稳定性。
Starch graft polymer and preparation method and application thereof
The invention discloses a starch graft polymer and a preparation method and application thereof. The preparation method of the starch graft polymer comprises the following steps: reacting an unsaturated monomer, water-soluble starch and water in a redox initiation system, and adjusting the pH value of the reaction solution to 7-9 by using alkali to obtain the starch graft polymer, wherein the unsaturated monomer is an unsaturated acid small monomer, or an unsaturated amide small monomer and an unsaturated acid small monomer. According to the invention, the water-soluble starch is used as a starch raw material, a gelatinization step required for preparing a conventional starch graft polymer is not needed, the preparation process is simple, and the cost is low; the starch graft polymer is easily soluble in water and is a clear and transparent aqueous solution. The starch graft polymer is used as a stabilizer of self-leveling mortar, and can prevent the self-leveling mortar from bleeding or segregating and the like so that the self-leveling mortar has better stability.
本发明公开了一种淀粉接枝聚合物及其制备方法和应用。这种淀粉接枝聚合物的制备方法，包括以下步骤：将不饱和单体、水溶性淀粉和水在氧化还原引发体系中进行反应，然后用碱将反应液的pH调至7～9，得到淀粉接枝聚合物；其中，不饱和单体为不饱和酸类小单体，或者是不饱和酰胺小单体和不饱和酸类小单体。本发明以水溶性淀粉为淀粉原料，无需常规淀粉接枝聚合物制备时所需的糊化步骤，制备过程简单，成本低；该淀粉接枝聚合物易溶于水，为澄清透明水溶液。本发明提供的淀粉接枝聚合物用作自流平砂浆的稳定剂，可防止自流平砂浆出现泌水或离析等问题，从而使自流平砂浆具有较好的稳定性。
Starch graft polymer and preparation method and application thereof
一种淀粉接枝聚合物及其制备方法和应用
ZHANG JUNJIE (author) / PANG HAO (author) / MAI YULIANG (author) / WEN WU (author) / LIAO BING (author)
2021-04-16
Patent
Electronic Resource
Chinese
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