31results about How to "Improve the physical index" patented technology

The invention provides a production process of PU film leather, which belongs to the technical field of PU leather. It includes the following steps: (1) preparing slurry; (2) splicing and unwinding; (3) primary coating; (4) primary drying; (5) primary cooling; (6) secondary coating; (7) ) secondary drying; (8) secondary cooling; (9) bonding; (10) pressing; (11) three drying; (12) three cooling; (13) stripping; (14) coiling; ( 15) Inspection of edge tearing and trimming; (16) Surface treatment; (17) Washing and drying. The invention realizes that the PU film leather can achieve good tensile strength and tear strength under the condition that the bottom surface is not compounded with single-face cashmere, greatly reduces the production cost, and improves the production efficiency.

A superfine fiber fabric, comprising a base part and a surface part, the base part is composed of fixed island type sea-island filaments or / and ordinary filaments, the surface part is composed of short fibers, and the fabric is the base part and the surface Partially intertwined nonwoven structure. A manufacturing process of superfine fiber fabrics, the island-fixed island-in-the-sea filaments or / and ordinary filaments of the base part are weft-knitted, warp-knitted or woven, and then a napping layer is formed on the surface through napping treatment. Lay short fibers on the layer, and use non-woven complexing technology to form a complex non-woven structure between short fibers and the brushed layer on the surface of the substrate, and then obtain superfine fiber fabrics through impregnation, drying, fiber opening, dyeing and post-treatment. The ultra-fine fiber fabric fills the gap in the finished product specifications of the needle-punched non-woven fabric with a thickness of less than 0.5mm, and has a very good two-color effect, high-grade and beautiful.

The soft nanometer montmorillonite-polyurethane foam plastic consists of nanometer montmorillonite 5-40 wt% and polyether polyol 60-95 wt%. The preparation process includes mixing nanometer montmorillonite and polyether polyol in some container; adding catalyst, foaming agent and foam homogenizing agent successively, and mixing to constitute composite polyether; adding isocyanate with NCO index of 1-1.2 via stirring at 4000-5000 rpm for 7-15 sec, curing at 70-120 deg.c for 10-15 min and reaction with isocyanate, and other steps. The soft nanometer montmorillonite-polyurethane foam plastic is soft, has high rebound elasticity, good wet ageing performance and ideal deformation curve, and may be used in replacing soft foamed polyether for fitting with grafted polyether. The preparation process has less environmental pollution.

The invention relates to a wet-process spunlace composite material and a manufacturing method which can fundamentally solve the low strength of common wet-process spunlace nonwoven materials and the large difference in longitudinal and transverse strength. The wet-process spunlace composite material has a double-layer structure. The upper layer is a wet-laid fiber net, and the lower layer is a woven fabric. Advantages: It solves the problem of low strength and large difference in longitudinal and transverse strength of ordinary wet-process spunlace nonwoven materials, improves product physical properties, broadens product application fields, and plays an important role in the promotion and application of wet-process spunlace nonwovens technology significance.

The invention relates to the utilization technology of solid waste phosphogypsum in phosphorus chemical industry, in particular to a phosphogypsum ball and a preparation method and an application thereof. The phosphogypsum ball provided by the invention is composed of the following raw materials in parts by weight: 82-95 parts of phosphorous gypsum, 3-10 parts of alkaline additives and 2-8 parts of gelling agent, wherein the phosphorous gypsum is a mixture of dihydrate gypsum and semi-hydrated gypsum, and the weight ratio of the dihydrate gypsum to the semi-hydrated gypsum is (85-95): (5-15). The water content of the phosphogypsum ball prepared by the preparation method is less than 10wt%, the SO3 content is more than 40wt%, the pH is larger than 7, the P2O5 content is less than 0.1wt%, the compressive strength of particles is more than 50 N, the particle diameters and the particles of the phosphogypsum ball are uniform, the strength is moderate, and the phosphogypsum ball is convenient to transport and can replace natural dihydrate gypsum oranhydrite to serve as a retarder in cement production.

The invention relates to a leather sole, and concretely relates to an injection molded leather sole and a making method thereof. The injection molded leather sole comprises plastic styrene butadiene rubber, hydrogenated styrene-butadiene-styrene segmented copolymer, ethylene-butylene copolymer, ethylene propylene diene monomer, white carbon black, talcum powder, naphthenic rubber oil, stearic acid, zinc stearate, zinc oxide, PEG4000, polysiloxane resin and dicumyl peroxide. The method comprises the following steps: mixing raw materials except dicumyl peroxide, carrying out first stage internal mixing, adding dicumyl peroxide when the temperature reaches 110-113DEG C, carrying out second stage internal mixing to obtain a well mixed mixture when the temperature rises to 115-118DEG C, thinning twice, and granulating; standing, injection the obtained material into a shoe die, and molding under the following conditions: the temperature of the is 178-182DEG C, and the vulcanizing time is 230-270s; and carrying out cooling molding on the above obtained sole to obtain the injection molded leather sole.

The present invention relates to a modified phosphogypsum brick and its use as cement retarder. Said modified phosphogysum brick comprises 80-95 wt% of phosphogypsum, 2-15 wt% of reinforcing agent and 3-10 wt% of modifiying agent. Said material mixture (100 wt%) is undergone the processes of forming and naturally-drying to obtain the invented product. The water content of said modified phosphogypsum brick is less than 10 wt%, SO3 is greater than 35 wt%, pH is greater than 7, P2O5 is less than 0.1 wt%. Said modified phosphogypsum brick is convenient for storage and transportation, can be used as cement retarder for production of cement instead of natural gypsum, and can reduce cement cost and raise cement property.

The invention discloses a production process of colored spunlace non-woven wiping cloth and belongs to the technical field of textile processing. The production process is characterized by including: using polyester silk superfine fiber as raw material, opening, carding to form web, spunlacing and splitting, dyeing and finishing to obtain the non-woven wiping cloth. The non-woven wiping cloth produced by the method has various colors, is good in softness, high in water absorbing performance and dirt absorbing performance, and good in wiping effect.

A process for recycling carpet or automobile interior scraps and the prepared hydrophobic floor tiles, comprising the following steps: 1) crushing the scraps; 2) heating the scraps until they are partially melted to form a plastic body and make solid particles; 3) taking step 2 ) to the small granules prepared in ), add preparation materials to it, and mix evenly; 4) Pour the mixed product in step 3) into a mold, harden under pressure, and demould to obtain a finished product. The process investment of the invention is small, the benefit is high, and the application range is wide. The hydrophobic floor tiles prepared by the invention have good water permeability, elasticity, non-slip, environmental protection, odorless and are suitable for outdoor walkways.

The invention discloses a surface treatment device on a light conveyor belt production line, comprising: a frame; a conveying structure, the conveying structure is located on both sides of the frame, and the conveying structure includes a first conveying roller, a second conveying roller and The third conveying roller, the bottom of one side of the frame is fixedly provided with a first mounting seat, the first mounting seat is rotatably provided with a first conveying roller, and the side of the frame is fixed above the first conveying roller A second mounting seat is provided, and a second conveying roller is rotatably arranged in the second mounting seat, and a third mounting seat is fixedly arranged above the other side of the frame, and a first Three conveyor rollers. The invention evenly transfers the surface treatment agent to the surface of the light-duty conveyor belt through a special patterned roller, which can form a layer of uniform special material film on the surface of the light-duty conveyor belt, and improve the physical index of the light-duty conveyor belt.

The invention discloses a hot air circulating system for an air knife of a two-way stretching membrane for extruding and casting. The hot air circulating system is an integral system including a high-pressure centrifugal ventilator with variable frequency control, a gas filter, a conveying air duct, a gas heater, the air knife, a hot oil temperature control station and a hot air temperature pressure control unit, wherein the high-pressure centrifugal ventilator with variable frequency control is connected with the gas filter; the gas filter is connected with one end of a hot air jacket of the gas heater through a connection pipe, and the other end of the gas heater is connected with the air knife through the conveying air duct. According to the hot air circulating system disclosed by the invention, an air source is clean gas with adjustable temperature, and the air blown from the air knife is hot air with controllable temperature and pressure. Due to the action of the air knife, besides that the membrane can be better attached to a cold roll so as to reduce the pinch phenomenon at two ends of a casting film, the cooling speed of a flux and the temperature of the membrane can also be controlled; the crystal types and the crystallinity required by a user are ensured, and advantages are provided for the next stretching orientation, an intergranular structure and other special requirements.