Abstract: A micro-nano structure-based super-hydrophobic fabric and a preparation method therefor are disclosed. A brand-new method of combining carbene polymerization covalent grafting with solid surface self-assembly is used for the first time to prepare a modified fabric having super-hydrophobic and self-cleaning functions, by taking an aliphatic diazo compound and an aromatic diazo compound as monomers for carbene copolymerization to graft a fluorine-containing and phenyl-containing block copolymer having a single-carbon repeating unit onto the surface of a fabric by means of a covalent bond. A carbene polymer is crystallized under the induction of the surface of a fiber to drive self-assembly to construct a hierarchical roughened structure having a micro-nano composite structure on the surface of the fabric, and a secondary structure is a nano-scale mastoid-shaped structure imitating a lotus leaf surface.

Abstract: Disclosed are an aniline anhydride, a preparation method therefor, and a polyaminoacid graft chain. In the presence of an acid binding agent, an addition-elimination reaction is carried out between N-phenyl amino acid and Boc anhydride to obtain N-phenyl-Boc-glycine; and under a nitrogen atmosphere, the N-phenyl-Boc-glycine is subject to cyclization to obtain the aniline anhydride. The polyaminoacid graft chain can be obtained using the aniline anhydride disclosed by means of chemical grafting and thus be covalently bonded with fiber. The fastness is high, the wearability of fabric is not affected, and the problem of low fastness of water-repellent fabric obtained by coating is solved. The polyaminoacid graft chain is biocompatible, naturally degradable and environmentally friendly, and is consistent with the current trend of developing green chemicals.

Abstract: A method of preparing a fluorinated polycaprolactone membrane includes the following steps: (1) reacting a polycaprolactone with an aminoalcohol compound to prepare a hydroxyl-terminated polycaprolactone; (2) reacting the hydroxyl-terminated polycaprolactone with an anhydride to prepare a carboxyl-terminated polycaprolactone; (3) reacting an ethylene glycol bromoisobutyrate with a fluorinated acrylate to prepare a hydroxyl-terminated fluoro-acrylate polymer; (4) reacting the carboxyl-terminated polycaprolactone with the hydroxyl-terminated fluoro-acrylate polymer to prepare a fluorinated polycaprolactone; (5) at room temperature, dissolving the fluorinated polycaprolactone in an organic solvent to prepare a solution; then naturally drying the solution at room temperature to prepare the fluorinated polycaprolactone membrane.

Abstract: An amino group is grafted to a fiber surface, the ring-opening polymerization of aniline acid anhydride is initiated by the amino group on the fiber surface to form a graft chain, and a water-repellent fabric the fiber surface of which is modified by polyamino acid is prepared. The fabric treatment uses an amino group pre-grafted on a fiber surface as an initiator in the liquid phase, and initiates (substitutes), by means of ring-opening polymerization (ROP), aniline acid anhydride to complete graft polymerization on the fiber surface. The production conditions are mild, the preparation process of the product is simple, and operation is safe. In the disclosed water-repellent fabric obtained by chemical grafting, a functional protective layer on the fiber surface is covalently bonded to the fiber, thereby having excellent fastness without affecting the wearability of the fabric, thus the problem of a water-repellent fabric having poor fastness is solved.

Abstract: Disclosed are a water-repellent fabric and a preparation method therefor. A short carbon chain fluoroalkyl alcohol with different fluorine atom numbers used as a starter is firstly treated with an acylation reagent to generate a short carbon chain fluoroalkyl bromoacetate, and is then synthesized with N,N-bis(p-toluenesulfonyl) hydrazine to form a short carbon chain fluoroalkyl diazoacetate monomer, a fabric is respectively treated with an acylation reagent and N,N?-dimethylbenzenesulfonyl hydrazide in sequence to prepare a diazotized fabric having grafting sites on the surface thereof, and finally, a fluorine-containing polymer having a single carbon repeating unit is grafted to the surface of the fabric via a covalent bond by means of carbene polymerization, and thus a hydrophobic modified fabric is prepared. The entire reaction is carried out at a low temperature/room temperature, the operation is simple, and the process is environmentally friendly.

Abstract: Provided is a fluorosilicone resin and a preparation method thereof. Using pentafluorostyrene as raw material, pentafluorophenethyldimethylchlorosilane is prepared by a hydrosilylation reaction. By means of a polycondensation reaction of the pentafluorophenethyldimethylchlorosilane, trimethylchlorosilane and tetraethyl orthosilicate, a pentafluorophenyl silicone resin is prepared. The preparation method adopts a two-step polycondensation process, which overcomes the disadvantages of a large difference in hydrolysis reactivity between pentafluorophenyldimethylchlorosilane and a copolymerized trialkyl-chlorosilane, and achieves a high yield. The obtained pentafluorophenyl silicone resin has the advantages of superior heat resistance, simple preparation process, low equipment requirements, high availability of raw material, and suitability for mass production. The heat-resistant fluorosilicone resin can be applied in a polymer material, such as a heat-resistant adhesive.

Abstract: A method of preparing a fluorinated polycaprolactone membrane includes the following steps: (1) reacting a polycaprolactone with an aminoalcohol compound to prepare a hydroxyl-terminated polycaprolactone; (2) reacting the hydroxyl-terminated polycaprolactone with an anhydride to prepare a carboxyl-terminated polycaprolactone; (3) reacting an ethylene glycol bromoisobutyrate with a fluorinated acrylate to prepare a hydroxyl-terminated fluoro-acrylate polymer; (4) reacting the carboxyl-terminated polycaprolactone with the hydroxyl-terminated fluoro-acrylate polymer to prepare a fluorinated polycaprolactone; (5) at room temperature, dissolving the fluorinated polycaprolactone in an organic solvent to prepare a solution; then naturally drying the solution at room temperature to prepare the fluorinated polycaprolactone membrane.

Abstract: Provided is a fluorosilicone resin and a preparation method thereof. Using pentafluorostyrene as raw material, pentafluorophenethyldimethylchlorosilane is prepared by a hydrosilylation reaction. By means of a polycondensation reaction of the pentafluorophenethyldimethylchlorosilane, trimethylchlorosilane and tetraethyl orthosilicate, a pentafluorophenyl silicone resin is prepared. The preparation method adopts a two-step polycondensation process, which overcomes the disadvantages of a large difference in hydrolysis reactivity between pentafluorophenyldimethylchlorosilane and a copolymerized trialkyl-chlorosilane, and achieves a high yield. The obtained pentafluorophenyl silicone resin has the advantages of superior heat resistance, simple preparation process, low equipment requirements, high availability of raw material, and suitability for mass production. The heat-resistant fluorosilicone resin can be applied in a polymer material, such as a heat-resistant adhesive.