3results about How to "Excellent fastness" patented technology

This invention belongs to the field of textile technology and relates to a polyester warp-knitted fabric with a nylon-like feel, its preparation method, and its application. The polyester warp-knitted fabric with a nylon-like feel is obtained through a knitting process and a dyeing and finishing process. The knitting process uses polyester combined with spandex and a warp-knitting padding design to optimize the yarn interlacing state, making the fabric soft and delicate to the touch. The dyeing and finishing process includes refining, first drying, pre-setting, alkali reduction, dyeing, second drying, and final setting. By controlling the reduction rate in the alkali reduction step, the polyester fabric can be given a soft and smooth feel and delicate luster similar to nylon. At the same time, it can overcome the functional limitations of real nylon, integrating cooling sensation, moisture absorption and quick drying, softness and skin-friendliness, good drape, wear resistance, breathability and non-suffocation, and wrinkle resistance and easy care into one.

The invention belongs to the technical field of concrete, and particularly relates to a mud-resistant polycarboxylate superplasticizer and a preparation method thereof. The mud-resistant polycarboxylate superplasticizer is prepared from a zwitterionic monomer, an unsaturated functional monomer containing a primary amine group, an unsaturated polyether macromonomer, an unsaturated acid monomer, formaldehyde, pyrogallic phenol, a chain transfer agent, an initiator, a reducing agent and deionized water. Wherein the zwitterionic monomer is carboxyl betaine methacrylate, and the unsaturated functional monomer containing the primary amine group is 2-aminoethyl methacrylate hydrochloride. The product has the characteristics that the silt content is gt; and in a severe aggregate environment with the content of 5%, extremely high effective adsorption capacity can be maintained only by low mixing amount, and the sensitivity of the concrete to the silt content of sand and gravel is remarkably reduced.

This invention belongs to the field of concrete technology, specifically relating to an anti-mud polycarboxylate superplasticizer and its preparation method. The anti-mud polycarboxylate superplasticizer is made from zwitterionic monomers, unsaturated functional monomers containing primary amine groups, unsaturated polyether macromonomers, unsaturated acid monomers, formaldehyde, pyrogalactosyl, chain transfer agents, initiators, reducing agents, and deionized water; wherein the zwitterionic monomer is carboxybetaine methacrylate, and the unsaturated functional monomer containing primary amine groups is 2-aminoethyl methacrylate hydrochloride. The product of this invention maintains extremely high effective adsorption capacity with only a low dosage in harsh aggregate environments with a mud content >5%, significantly reducing the sensitivity of concrete to the mud content of sand and gravel.