Research On Preparation And Application Of Water-Based Silicone

With the more and more requirement of clothing and home decoration of people, the single silicone finishing agent has been unable to meet the demands of people, complex silicone finishing agent become the focus of the current research. First, the silicone resinis used as finishing agents in textile industry. It can endow very good water resistance and washability to the fabric treated by silicone resin. However, the treated product was difficult to maintain excellent softness and feeling. Second, the silicone resin used as a floor tile finishing agents in terms of home decoration. It can endow a good waterproof and antifouling properties of the tile. Besides, the excellent feeling and gloss has become a pursuit. In view of this, the research contents of this paper are shown as follows:(1)The methyl silicone resin emulsion (PTMS) was synthesized through the base-catalyzed emulsion polymerization of MTES.The structure was characterized by IR. The synthetic conditionswere optimized, and the physical and chemical properties of the PTMS were tested. The complex of methyl silicone resin emulsion(PTMS) and hydrogen/amino silicone emulsion (PHAS) were applied in the surface treatment of the fabric and the performance of their applications were studied, the fabric fiber surface film morphology was observed using scanning electron microscopy (SEM). The results showed that, the best condition of emulsion polymerization was optimized, the amount of emulsifier was 8%, the amount of catalyst was 0.7%, reaction temperature was 50?, reaction time was 5h. The average particle size of the PTMS was 23.2nm, the value of Zeta potential was +48.6mV. The finishing of fabric fiber surface became smooth using the complex of MTES and PHAS. The softness, flexibility and water resistance were improved, the whiteness remained basically unchanged, and washing for 10 times,its waterproof almost unchanged. When adjusting the ratio of raw materials m(PTMS):m(PHAS) to 5:3, the dosage of emulsion to 9g/L, baking temperature to 150?, finishingbaking time to 30s and the pH of PTMS to 6.(2)In the presence of Pt catalyst, a kind of long-chain alkylpolyether modified epoxy silicone oil (PCA) was synthesized fromhydrogen silicone oil(PHMS), allyl epoxy polyether (AEH) and 1-hexadecene (C16) by hydrosilylation reaction and then reacted with polyether amine(D23o),to prepare a long-chain alkyl polyether/aminosilicon (PCAD). The chemical structure was characterized by IR and 1HNMR. The synthetic conditions were optimized, and the physical and chemical properties of the emulsion were tested. The results showed that, the best condition of hydrosilylation reactionwas optimized, the ratio of raw materials n(Si-H):n(C=C) was 1:1.1,reaction time was 2h, the amount of catalyst was 0.004%, the amount of isopropyl alcohol solvent was 30%. The conditions of ringopening reaction was that, n(epoxy group): n(polyether amine) wasl:1.08, reaction temperature was 80?, reaction time was 5h. The average particle size of PCAD emulsion was 83.7nm, the value of Zeta potential was +13.8mV. The PCAD emulsions and polyether-modified methyl silicone resin emulsion (Pe-PTMS),finished fabric together., the softness and waterproproperty were improved, the whiteness of fabric remained basically unchanged. When the Pe-PTMS mass concentration was 3%, the ratio of raw materials n(C]6):n(AEH) was 8:2 and the curing temperature was 150?.(3)The vinyl/methyl silicone resin emulsion (MVTES) was s-ynthesized through the emulsion polymerization of MTES and VTES. The structure was characterized by IR?1H-NMR and XRD. The stable silicon-containing wax emulsion (PWCAD) was prepared from paraffin and long-chain alkyl polyether/amino silicon (PCAD) by mechanical emulsification method. The particle size and the physical and chemical properties of MVTES and PWCAD were tested, and the emulsification process of PWCAD was optimized. The results showed that, the optimum of emulsifying process was that, emulsifier dosage was 20%(w), emulsifying temperature was 80?, emulsifying time was 35min and stirring speed was 700r/min. The average particle size of MVTES was 17.85nm, the average particle size of PWCAD was 175.41nm. The complex of MVTES?PHDS?PWCAD and KH-550 were used as organic silicone coating agent applied on the surface of the tile. The effects of mass ratio MVTES and PHDS, the amount of PWCAD, the amount of solid content of the coating agent and the dosage of catalyst KH-550 on the waterproof and antifouling properties and others of floor tiles were investigated. The results show that, the coated of tiles surface became smooth of a wax feeling and gloss, the waterproof and antifouling properties were improved. When the mass ratio MVTES and PHDS was 7:3, the amount of PWCAD was 10%, the amount of solid content of the coating agent was 12%, the amount of catalyst was 2.5%.