Concept: A kind of non-ionic starch prepared by the etherification reaction of propylene oxide and starch under alkaline conditions, also known as starch ether. The raw material is tapioca starch. Among them, the hydroxypropyl content is 25%, which is anti-thixotropic. Because of its low viscosity, high hydrophilicity, good fluidity, weak retrogradation and high stability, it is widely used in the construction and decoration industry, such as construction dry powder, plaster, joint adhesive and other neutral And alkaline composite materials, improve the internal structure of the material, and have good compatibility with the additives in it, so that the product is more resistant to dry cracking, anti-sag, and improves workability and construction performance.
Appearance: white powder
characteristic:
1. Very good rapid thickening ability: medium viscosity, high water retention;
2. The dosage is small, and a very low dosage can achieve a high effect;
3. Improve the anti-sag ability of the material itself;
4. It has good lubricity, which can improve the operating performance of the material and make the operation smoother.
Standard packing: 25kg
use:
Modified starch ether is used in construction, mainly for thickening and anti-sagging, and cellulose ether is mainly for water retention, so starch ether is used together with cellulose ether;
It can thicken and retain water, forming complementary advantages (according to the formula, reduce the amount of HPMC by about 30% and replace it with starch ether to increase product performance)
Through the test, it is considered that it is a better choice to add a high-volume lubricant to the exterior wall putty in the environment of high temperature in summer. The lubricant belongs to the polymer compound, and the rheological lubricant is mainly aimed at improving the construction performance in the cement-based system. Open time and consistent performance. Increases the workability and sag resistance of mortars, plasters, renders, plasters and adhesives and prevents delamination of self-leveling cement. The reason for water retention is that there are a large number of hydrophilic functional groups on its molecular chain. In the case of repeated scraping and coating, it will not lose water, has outstanding water retention performance, and has thickening and thixotropy at the same time, making the construction smoother and can partially replace cellulose, but its price is only cellulose ether, and its dosage is 0.5kg-1kg , is a very cost-effective material, if used together with cellulose ether, lignocellulose, and redispersible latex powder, the effect will be better.