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

The invention relates to non-woven product manufacturing equipment, in particular to a component of a needle machine, and discloses an automatic-rotating felting needle. The automatic-rotating felting needle comprises a needle body (1) and a needle rod (2). Hooks (3) are arranged on the needle body (1) at intervals. The needle body (1) and the needle rod (2) are arranged separately. A blind hole (4) is formed at one end of a non-bent handle of the needle rod (2), and the needle body (1) is inserted into the blind hole (4) to rotate relative to the blind hole. The felting needle rotates when penetrating fiber nets, so that twining force and cohesive force among fibers are greatly increased, the fibers are twined firmly and are not easy to layer due to high releasing force, length of a production line is shortened, production efficiency is improved, and service life of the felting needle is prolonged.

The invention discloses extrusion equipment for fusion and granulation of recovered glass fiber-reinforced plastic. According to the technical scheme, the extrusion equipment for fusion and granulation of recovered glass fiber-reinforced plastic comprises a double-screw extruder and a single-screw extruder which are connected in sequence; the double-screw extruder comprises a first-order cylinder with a heating function, a first-order feeding port used for feeding is formed in the front portion of the first-order cylinder, a filter screen is arranged on the rear portion of the first-order cylinder and used for filtering fused polymers, and a mixing unit is further arranged in the position, close to the filter screen, of the interior of the first-order cylinder; and the single-screw extruder comprises a second-order cylinder with a heating function, a second-order feeding port is formed in the front portion of the second-order cylinder and used for collecting short glass fibers and the polymers filtered by the filter screen, an extruder head is arranged on the rear portion of the second-order cylinder, and an ultrasonic vibration mechanism used for promoting the glass fibers and the polymers to be mixed is arranged on the extruder head. According to the extrusion equipment for fusion and granulation of recovered glass fiber-reinforced plastic, the cut short glass fibers are effectively protected, and the physical index of products is effectively increased.

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 heat transfer printing trademark with a cracking effect and a production process thereof. The heat transfer printing trademark with the cracking effect includes a PET film,a release layer, a surface protection layer, a cracking resin layer, a white glue layer, a sublimation prevention layer and a hot melt glue layer which are successively arranged from bottom to top, and the cracking resin layer comprises the following raw materials of a cracking resin, a dry high wear-resisting resin, acetic ether, organic color paste, a color showing agent, a polyether defoaming agent and an organic silicon leveling agent. According to the heat transfer printing trademark with the cracking effect and the production process thereof, the cracking resin layer is mainly composed of the cracking resin and the dry high wear-resisting resin, when the cracking resin layer is heated to a certain degree, macromolecule chains in the cracking resin composition breaks, a cracking pattern is formed, and thus the heat transfer printing trademark has the cracking effect; and by adjusting the ratio between the cracking resin and the dry high wear-resisting resin, the cracking pattern formed by the cracking resin layer is fine and smooth, the effect is obvious, and the bonding fastness between upper and lower layers is good.

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 DMAC recycling physical property index optimization system, which belongs to the technical field of spandex production. Including dehydration tower, crude solvent tank, refining tower, distillation tank supply tank and recovery tower, the dehydration tower is connected to the feed pipe, the bottom of the dehydration tower is connected to the middle of the refining tower through the crude solvent tank, and the bottom of the refining tower is connected to the recovery tank through the distillation tank supply tank The bottom of the tower is connected; the middle part of the dehydration tower is connected to a preheater, and the top is connected to a condenser one and a cryocooler one; the top of the refining tower is connected to a condenser two and a cryocooler two; the top of the recovery tower is provided with a condenser three , the condenser three is provided with a condensate receiving tank three, and the top of the condenser three is provided with a vacuum pump three. Adopting the invention to recover DMAC in the spandex production process not only ensures the normal operation of the DMAC rectification system, but also greatly improves the yield and physical property index of the recovered DMAC.

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 relates to a heat transfer printing trademark with stress discoloration effect and a production process thereof. The thermal transfer trademark having a stress-discoloration effect, comprises a PET film arranged in order from bottom to top, release layer, surface protection layer, stress chromotropic layer, Chromophore layer, white glue layer, Anti-sublimation lay and hot melt adhesive layer, the stress chromotropic layer comprises the following raw materials in parts by weight: stress chromotropic resin, dry process resin, organic color paste, defoamer, Polyether Defoamer, silicone leveling agent, the thermal transfer trademark with stress discoloration effect produced by the invention is realized by using the principle of stress whitening, When it is stretched, pushed up, bent, folded and other external forces, the deformation of the film will show color change, and with the change of deformation gradient, the color shows a light to dark gradient characteristics, givinga natural, soft feeling, once the external force is eliminated, the color of the trademark surface will naturally recover as before.

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.

The invention relates to a nano intensified-nylon-6 composite, which is prepared by blending the following major materials according to different percentages, melting and extruding the materials under the temperature of 215 DEG C to 250 DEG C: 50 percent to 70 percent of nylon slices, 25 percent to 30 percent of glass fiber, 0.05 percent to 0.1 percent of antioxidant I, 0.05 percent to 0.1 percent of antioxidant II, 1 percent to 1.5 percent of lubricant, 0.5 percent to 1 percent of nano material and 0.25 percent to 1 percent of coupling agent; the invention needs no compatilizer and tackifier, greatly reduces the cost, solves the problem that the glass fiber of the engineering plastics is exposed during the injection molding process, improves the appearance quality of the products and enhances the physical indexes of the products to a certain degree, thus changing the situation that some domestic manufacturers depend on the imported nylon. The composite of the invention can be used for the automobile and electromechanical industry fields, can be acted as a thin-walled complicated structural product due to the high rigidness, and is an environment protective product that can substitute the present halogenous fire retardants due to the fire resistance, which is energy conservative and environment protective and is an ideal product for the current engineering plastic modificationindustry.