51results about How to "Grafting is firm" patented technology

The invention discloses a preparation method of dye-absorption fibers. The preparation method of the dye-absorption fibers comprises the steps that a cationic cellulose ether aqueous solution with the concentration of 5g / L-100g / L is prepared, an alkali compound is added to the cationic cellulose ether aqueous solution to adjust the pH value to be 11-13, viscose is put into the cationic cellulose ether aqueous solution to be reacted for 15-60 minutes at the temperature of 80-100 DEG C, and poly quaternary ammonium salt viscose is obtained; the poly quaternary ammonium salt viscose is taken out and dried, and then the dye-absorption fibers are obtained. The invention further provides a preparation method of dye-absorption non-woven cloth. The preparation method of the dye-absorption non-woven cloth comprises the steps that the dye-absorption fibers are provided; lapping is carried out on the dye-absorption fibers; net fixation is carried out on the dye-absorption fibers after lapping, and the cloth is obtained. By means of the preparation method of the dye-absorption fibers and the preparation method of the dye-absorption non-woven cloth, dye-absorption non-woven cloth with high absorption force and tearing resistance can be prepared.

The invention relates to a non-woven fiber material for medical and health protection and its production process. The non-woven fiber material is a modified polypropylene fiber; the modified polypropylene fiber is made of surface-functional coral powder. Propylene modification is obtained, and the mass ratio of surface functional coral powder to polypropylene is 1:15 to 35; the preparation method of the surface functional coral powder is as follows: step 1, firstly, coral sand is polished into coral fine powder, and then The coral fine powder is subjected to amino treatment to obtain a coral powder amino-treated product; step 2, using the coral powder amino-treated product to perform grafting reaction with luteolin to obtain a surface-functional coral powder. The invention prepares and synthesizes a modified polypropylene fiber with strong hygroscopicity and antibacterial property by hydrophilically modifying the hydrophobic polypropylene fiber.

The invention provides a method for preparing hydrophobic silica by virtue of fumed silica. The method comprises the following steps: performing a reaction between fumed silica and vinyl silicone oilto prepare silicon dioxide containing vinyl; mixing silicon dioxide with a mixture of methyl silicone oil and a Karstedt catalyst; adding tetramethyldisiloxane to react to obtain modified silicon dioxide; and finally, adding alpha-olefin to react, so as to obtain hydrophobic silica. According to the method, the treatment of hydroxy on the surface of fumed silica is relatively thorough; long-chainalkyl is grafted to the surface of fumed silica, so that the grafting rate is high, obtained long-chain alkyl surface-modified silicon dioxide has good hydrophobicity and hydrophobic stability and further has good consistency with organic matters (including materials mainly containing carbon chains).