Thickener is an important part of pigment printing compound, which can thicken the color paste, promote adhesion, and has emulsifying effect, which can improve the coloring amount and brightness of pigment printing fabric and make the fabric obtain well-defined patterns. Acrylate polymer, commonly used in coating printing thickener, has high viscosity, good stability, strong thickening ability and is not easy to mildew at low solid content. Widely used in electrostatic flocking adhesive, pigment printing adhesive and water-based coating thickener.
Acrylate emulsion for coatings
Coating finishing is a branch of textile finishing. Through coating, the fabric has special properties. The acrylate coating agent with 40% solid content has good water pressure resistance and air permeability. It has been widely used in coating finishing of polyester-cotton windbreaker, polyester-cotton and nylon sweater fabrics, and it has flame retardant effect after adding flame retardant. Latex polymerized by ethyl acrylate, butyl acrylate and N- hydroxymethyl acrylamide can be made into foam coating agent after adding other additives, which can be used to cover curtains and cushion fabrics. 90 parts of butyl acrylate, 5 parts of acrylic acid, 10 part of 2- methoxyethyl acrylate and 160 part of water were mixed with 0. 15 part of dodecyl mercaptan, 3 parts of emulsifier and 5 parts of 2%K2S2O8 aqueous solution, and polymerized at 79℃ for 3 hours under the protection of nitrogen to prepare polymer emulsion. When in use, the fabric coating agent 50, the water 30, the thickener 4 and the defoaming agent are evenly mixed in a proper proportion, and the pH value of the coating agent is adjusted to 9- 10 with a proper amount of ammonia water.
Textile warp sizing
Size Acrylate size is composed of homopolymer or polymer with acrylic acid, methacrylic acid and its esters as the main body and a small amount of partially saponified acrylic acid and (meth) linoleic acid ester. The size film formed by self-crosslinking acrylate emulsion has good wear resistance, high strength, good toughness, good water resistance and strong adhesion to nylon and polyester. Polyacrylate size is the main size for sizing synthetic fibers and filaments. At first, acrylic acid, acrylic acid and salt were used as * * * polymers, but now hard monomers such as methyl methacrylate have been added to improve the glass transition temperature of * * * polymers. The preparation method of methyl ester slurry is emulsion polymerization of acrylic acid, ethyl ester and acrylic acid in proportion, in which benzoyl peroxide is used as initiator and the dosage is 65438 0%. React at 80℃ in the presence of nonionic surfactant (1%), and neutralize the product with ammonia water. The acrylic acid content should be controlled at about 12%, and the solid content of the finished product is 14%.