61results about How to "Improve Tangling Effect" patented technology

The invention discloses a long-branched chain polyacrylamide copolymer. The structural formula of the long-branched chain polyacrylamide copolymer is shown as formula (1). An organic silicon monomer with temperature resistance and salt resistance is introduced into an acrylamide copolymer so as to improve the temperature resistance and salt resistance of polyacrylamide; the introduction of a long-branched chain organic silicon flexible chain greatly improves the entwisting capability of a polymer molecular chain so as to improve the viscoelasticity of the polymer for reducing the interface tension of a grafting copolymer solution and improve the affinity of displacing fluid and displaced fluid in practical use; and a copolymer main chain is formed by copolymerizing the organic silicon monomer, acrylamide and monomers with temperature resistance and salt resistance, such as 2-acrylamino-2-methy propanesulfonic acid, N-vinyl pyrrolidone, N,N-dimethyl acrylyl and the like, thereby ensuring the chemical stability of the main chain.

The invention relates to a blend of PPC, PBAT, PCL and PLA and a preparation method thereof. The blend consists of PPC, PBAT, PCL, PLA, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PCL, the PLA, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixing materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is greatly improved in comparison with the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

The invention discloses a high-performance uniform leather base fabric which comprises a nonwoven fabric layer and a machine-woven fabric layer, wherein the machine-woven fabric layer is composited on the nonwoven fabric layer through an acupuncture process. The nonwoven fabric layer is prepared by taking 70-100 wt % of regenerated polyester fiber and 0-30 wt % of maximized polyester short-fiber as raw materials through opening and mixing, web forming through carding, web paving, and two acupunctures; the linear density of the regenerated polyester fiber is 1.5-4D, and the fiber length is 38-76mm; and the linear density of the maximized polyester short-fiber is 1.4-3D, and the fiber length is 38-51mm. The machine-woven fabric layer is prepared by using polyester silk, the warp density is 65-85 roots / in, and the weft density is 35-50 roots / in. According to the invention, by combining a characteristic that the vertical and horizontal strength ratio of a nonwoven fabric is large and the vertical and horizontal strength ratio of a machine-woven fabric is small, the prepared leather base fabric has unique styles of the two, and performances of uniform vertical and horizontal breaking strength and elongation at break, so that the ratio of the vertical and horizontal breaking strength to the elongation at break is ensured to be within 1:1.1.

The invention discloses a high-performance polypropylene material and a preparation method thereof, wherein the high-performance polypropylene material is prepared from the following components in parts by weight: polypropylene, polyethylene, an inorganic filler, a toughening agent, an amino-terminated hyperbranched ethylenediamine triazine polymer and a processing aid through mixing, extrusion and granulation. According to the invention, the amino-terminated hyperbranched ethylenediamine triazine polymer is used as a modification auxiliary agent in blending modification of polypropylene, andbased on the special structure of the amino-terminated hyperbranched ethylenediamine triazine polymer, the rigidity and the toughness of the polypropylene material can be obviously improved.

The invention discloses a highly air permeable and highly tearing fine denier yarn spunlace novel material and a production technique thereof, which pertains to the technical field of textile materials. The novel material is produced by the following components according to weight percentage: 70 percent of highly hydrophilic polyester with the specification of 1.56dtex multiplied by 38mm and 30 percent of nylon with the specification of 1.56dtex multiplied by 38mm. The highly air permeable and highly tearing fine denier yarn spunlace novel material has good stretching strength, the ratio of MD to CD equal to 1:1, even vertical and horizontal tearing strength, good uniformity, even thickness, no fuzz, stable peeling, good winding effect, comfortable touch feeling and low formaldehyde content, and improves the simulation quality and the air permeability of a product after becoming finished leather; the product is mainly used as the base fabric of PU leather.

Disclosed is a polylactic acid-modified polycarbodiimide compound which is blended with a polylactic acid resin for imparting hydrolysis resistance thereto while improving mechanical characteristics thereof. Also disclosed are a polylactic acid resin composition containing such a polylactic acid-modified polycarbodiimide compound, and a molded article.

The invention discloses an antibacterial fabric and a preparation method thereof and belongs to the technical field of textile production. The hyperbranched polymer obtained by modifying a quaternaryammonium salt structure is used for antibacterial finishing of fabrics, on one hand, the hyperbranched polymer has high solubility, the washing resistance is improved; on the other hand, long-chain alkyl is introduced in the substitution process, the cytotoxicity is reduced, and a hydrophobic group and a hydrophilic group deeply penetrate into lipid layers and protein layers of bacterial cells respectively, so that the antibacterial performance is enhanced. After an epoxy group and a hydroxyl group of starch produce etherification action, the long-acting antibacterial property is formed, the performance of the fabric is improved, the plasticizing effect on the fiber is achieved, the antibacterial efficiency is improved, the plasticity and entanglement performance of the fiber are improved,the mechanical property and toughness of the fabric are improved, and the antibacterial efficiency is also increased. The problem is solved that an antibacterial additive in an existing antibacterialfabric is high in toxicity and has the influence on the mechanical property of the fabric itself.

The present invention discloses an environment-friendly antibacterial composite material and a manufacturing method thereof. The environment-friendly antibacterial composite material comprises regenerated polyester staple fibers of which the fineness is 2.0 D, the length is 51 mm and the content is 30-50 wt%, regenerated polyester staple fibers of which the fineness is 2.5 D, the length is 64 mm and the content is 25-40 wt%, and bamboo pulp fibers of which the fineness is 2.0 D, the length is 51 mm and the content is 25-35 wt%. A finishing liquid of the environment-friendly antibacterial composite material in a finishing process is composed of the following components of 20-30 parts by weight of a high polymer emulsion, 10-20 parts by weight of starch, 25-35 parts by weight of coarse whiting, 40-50 parts by weight of clean water, and 3-5 parts by weight of negative oxygen ion powder. Through plates commonly manufactured by the bamboo pulp fibers and negative oxygen ions, the composite material has a bacteriostatic action and also an obvious smell-removing function.

The invention discloses a foaming-grade biodegradable polyester material, and the material is characterized by being prepared from the following raw materials by weight: 88.00-99.87% of biodegradable polyester; 0.01-1.00% of an organic peroxide; 0.01-3.00% of a silane coupling agent; 0.10-5.00% of silicon dioxide particles; and 0.01-3.00% of a lubricant. The invention also provides a preparation method of the foaming-grade biodegradable polyester material. The foaming-grade biodegradable polyester material has high melt strength and excellent foamability, and can meet the process requirements of continuous extrusion foaming, kettle pressure foaming, mold pressing foaming and injection molding foaming.

The invention provides a modified cellulose spunlace non-woven fabric and a preparation method thereof, and belongs to the technical field of spunlace non-woven fabrics. The modified cellulose spunlace non-woven fabric is prepared from the following raw materials of modified cellulose, polypropylene, tetrabutyl titanate and deionized water. The modified cellulose has a structure shown in the specification, wherein n is equal to 100 to 300. The prepared modified cellulose spunlace non-woven fabric not only has good antibacterial and bacteriostatic performance, but also has certain formaldehyde purification capacity, good skin-friendly performance and good mechanical performance; after spunlace reinforcement, fibers in the non-woven fabric are displaced, interspersed, entangled and cohered to form countless flexible entanglement points, so that the non-woven fabric is reinforced, and the high-performance spunlace non-woven fabric is obtained.

The invention relates to a blend of PPC and PBAT and a preparation method thereof. The blend consists of PPC, PBAT, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixed materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is greatly improved in comparison with the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

The invention relates to a blend of PPC, PBAT, PCL, PBS and PLA and a preparation method thereof. The blend consists of PPC, PBAT, PCL, PBS, PLA, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PCL, the PBS, the PLA, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at temperature not above 35 DEG C; and extruding and granulating cold mixed materials by a screw extruder, whereinthe temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is superior to that of the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.