4 results about "Hydroxyethyl methyl cellulose" patented technology

The application discloses modified cellulose ether and a preparation method thereof, and relates to the technical field of building materials. The modified cellulose ether is prepared from hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose ether, air entraining agent and other additives, and specific modified starch ether. The modified starch ether is prepared from starch as a matrix through two-step reactions of grafting a hydroxyl monomer and etherification of a hydroxypropyl monomer. The modified cellulose ether has synergistic effects of various components, relies on the unique molecular structure of the modified starch ether, greatly improves water retention performance, construction workability and plasticity retention capacity, and has better water retention rate, scraping feeling and open time than pure hydroxypropyl methyl cellulose. Different monomer types and ratios have a significant influence on core performance, and the modified cellulose ether can fully play the roles of thickening, anti-sagging and anti-slippage and has excellent water retention rate in building mortar and other materials.

The application relates to the technical field of water-based paint functional additives, in particular to modified hydroxyethyl methyl cellulose ether suitable for water-based paint and a preparation method and application thereof. The modified hydroxyethyl methyl cellulose ether comprises the following components in percentage by weight: 90-95% of surface treatment type hydroxyethyl methyl cellulose ether; 5-10% of admixture; the admixture comprises the following components in parts by weight: 20-35 parts of N-trimethyl chitosan citrate; 30-45 parts of trehalose grafted polyoxyethylene-polyoxypropylene block copolymer; and 20-40 parts of dodecyl hydrophobically modified branched starch. The application overcomes the performance defects of conventional HEMC through a simple and efficient modification mode, makes the comprehensive performance of the HEMC reach the same level of mainstream HEC, meanwhile, the cost advantage of the HEMC is retained, and the large-scale application of the HEMC in a water-based paint system is realized.

The application relates to the technical field of road building and filling materials, and mainly relates to an rubber-plastic micro-powder fluidized solid waste light soil and a preparation method thereof.The rubber-plastic micro-powder fluidized solid waste light soil comprises the following components: (1) solid material; the solid material comprises solid waste cementing material and rubber-plastic micro-powder; the solid waste cementing material comprises the following raw materials according to weight fractions: solid waste base material 40-60 parts, hydraulic cementing material 50-60 parts, additive 0.3-3 parts and hydroxyethyl methyl cellulose 0.03-0.05 parts; the volume content of the rubber-plastic micro-powder in the solid material is 10%-70%; (2) water; the weight ratio of the water to the solid material is 0.5-0.7:1.The prepared rubber-plastic micro-powder fluidized solid waste light soil can realize comprehensive utilization and recycling of the solid waste base material and rubber-plastic material, and has good compression resistance and fatigue resistance after hardening, and has good comprehensive performance, and can effectively meet the requirements of road building and filling as a light material.