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

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 provides foamable polyolefin and polystyrene blend particles and a preparation method thereof. The foamable polyolefin and polystyrene blend particles are prepared from components in parts by weight as follows: 30-90 parts of styrene polymer resin, 10-60 parts of low-density polyethylene resin, 2-20 parts of polyolefin elastomers, 0-15 parts of a phase solubilizer, 0-3 parts of an initiating agent, 0-10 parts of reactive monomers, 0.5-5 parts of a nucleating agent and 5-20 parts of a foaming agent. Various mold goods can be prepared from the foamable polyolefin and polystyrene blend particles through thermal forming or rubber molding, and a product is high in compression strength, energy absorptivity and strength and excellent in toughness, shock resistance, bending resistance and thermal insulation performance; the foamable polyolefin and polystyrene blend particles are free of plasticizers and VOC (volatile organic compound) and can be used as buffer devices, packaging materials, automotive interior parts, thermal insulation materials and the like.

The invention belongs to the technical field of new material tire preparation, and relates to a preparation method of a graphene functional aviation tire. The technological process comprises the following five steps: preparing modified graphene, preparing compound tread rubber and sidewall rubber, preparing compound tread and sidewall, preparing a compound green tire and preparing an aviation tire. Based on specific functional characteristics of graphene material, on the basis of the modified graphene and a basic recipe of an aircraft tire in the prior art, 0.1 to 15 weight parts of modified graphene is added into the tread rubber and sidewall rubber separately, a plastic mixing and calendaring process is adopted, mould pressing bonding forming is carried out under high-temperature conditions with functional layers such as an air impervious liner, a buffer layer and a cord fabric according to a tire manufacturing basic technology, and finally the aviation tire is compositely prepared and obtained through subsequent fabrication processing of vulcanization; the technology is simple and practicable, the conventional production equipment is fundamentally utilized, large-scale technical transformation is not needed, the preparation method is applicable for the preparation of various types of aviation tires, and the preparation method is convenient for popularization and application.

The invention relates to a production method for microfiber leather. The production method comprises the following steps that firstly, composite fibers are spun; secondly, non-woven fabric is made; thirdly, the non-woven fabric is shaped; fourthly, a polyurethane resin working solution with high solid content and high viscosity is prepared; fifthly, a polyurethane resin working solution is smeared; sixthly, a polyurethane resin working solution with low solid content and low viscosity is prepared; seventhly, soaking and continuous rolling are carried out with the polyurethane resin working solution; eighthly, polyurethane is solidified; ninthly, methylbenzene decrement treatment is carried out. Compared with the prior art, the microfiber leather has the advantages of being good in hand touch and drape effect and high in air and water vapor permeability.

Superfine fiber fabric comprises a base portion and a surface portion. The base portion is composed of fixed island type sea-island filament or / and common filament; the surface portion is composed ofshort fibers. The fabric has a non-woven structure in which the base portion and the surface portion are mutually complexed. The invention relates to a manufacturing process of the superfine fiber fabric, wherein the fixed island-type sea-island filament or / and an ordinary filament of the base portion thereof are knitted by a weft knitting, warp knitting or weaving process, and then a napping layer is formed on the surface of the superfine fiber fabric by a napping treatment; the napping layer is covered by the short fiber; the non-woven structure is formed by the non-woven complex technologybetween the short fibers and the napping layer on the surface of the matrix; after immersion, drying, shedding, dyeing and post-treatment, the superfine fiber fabric is obtained. The superfine fiber fabric fills in the blank of needle punched non-woven fabrics with thickness less than 0.5 mm, and has very good two-color effect and high-grade beauty.

The invention provides a production process of PU transfer coating leather, belonging to the technical field of PU leather. The production process comprises the following steps: (1) preparing pulp; (2) unreeling paper; (3) coating primarily; (4) drying primarily; (5) cooling primarily; (6) coating secondarily; (7) drying secondarily; (8) cooling secondarily; (9) laminating; (10) pressing; (11) drying thirdly; (12) cooling thirdly; (13) stripping; (14) reeling; (15) tearing edge, trimming and checking out; (16) carrying out surface treatment; and (17) washing and drying. The PU transfer coating leather can achieve the good tensile strength and tearing strength under a condition that the bottom surface of the PU transfer coating leather is not composited with one-side fleece, the production cost is greatly reduced and the production efficiency is improved.

The invention discloses an R&D (research and development) and production method of waterborne solvent-free polyurethane superfine fiber emulational leather. The leather is prepared by the following steps: bonding a waterborne polyurethane resin surface material and a middle material (bonding layers) and solvent-free polyurethane resin (A and B), and bonding an obtained layer and microfiber base with different thicknesses in a half-dry manner. According to the method, various difficulties in production of microfiber-related products and various problems in production technologies due to the limitation caused by the traditional out-dated production line and the traditional production technique and raw materials can be solved; a product produced by the method is smooth in surface without deadcrinkles, soft and elastic in hand feeling and extremely strong in dermic feeling and can meet the requirements of users and merchants on the product, so that the grade and the additional value of the product can be improved, and the foundation is laid for industrial upgrading and transformation of enterprises.

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 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, which 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 in automobile and electromechanical industry field, can be acted as thin walled complicated structural product due to the high rigidness, and is an environment protective product that can substitute the present halogenous fire retardants, which is energy conservative and environment protective and is an ideal product for the current engineering plastics modification industry.

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 invention relates to a physical index optimizing system for recycling DMAC (dimethylacetamide), which belongs to the technical field of spandex production. The physical index optimizing system for recycling DMAC comprises a dehydrating tower, a coarse solvent tank, a refining tower, a distillation still supplying tank and a recovery tower, wherein the dehydrating tower is connected with a feed pipe, the bottom of the dehydrating tower is communicated to the middle of the refining tower through the coarse solvent tank, and the bottom of the refining tower is communicated with the bottom of the recovery tower through the distillation still supplying tank; a preheater is connected to the middle of the dehydrating tower, and a No.1 condenser and a No.1 chiller are connected to the top of the dehydrating tower; a No.2 condenser and a No.2 chiller are connected to the top of the refining tower; a No.3 condenser is arranged on the top of the recovery tower, a No.3 condensate receiving tank is arranged on the No.3 condenser, and a No.3 vacuum pump is arranged on the top of the No.3 condenser. By adopting the physical index optimizing system to recycle DMAC in the process of spandex production, normal operation of a DMAC distillation system is guaranteed, and the yield and physical indexes of the recycled DMAC are greatly increased.

The invention discloses a carpet or automobile trim leftover material recycling technology and a prepared lyophobic floor tile. The carpet or automobile trim leftover material recycling technology comprises the following steps that firstly, leftover materials are crushed; secondly, the leftover materials are heated to be partially melted, a plastomer is formed, and solid particles are prepared; thirdly, the small particles prepared in the second step are taken, preparing materials are added in the small particles, and mixing is uniform; and fourthly, products obtained after mixing in the thirdstep are poured into a die, pressurizing and hardening are conducted, and a finished product is obtained through demoulding. The technology input is low, benefits are high, and the application rangeis wide. The prepared lyophobic floor tile is good in water permeating effect, has elasticity, prevents skidding, and is environment-friendly, free of odor and suitable for outdoor footpaths.

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 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 discloses a surface treatment device on a light conveying belt production line. The surface treatment device comprises a rack; and conveying structures located on the two sides of the rack, wherein each conveying structure comprises a first conveying roller, a second conveying roller and a third conveying roller, a first mounting seat is fixedly arranged below one side of the rack, the first conveying rollers are rotationally arranged in the first mounting seat, a second mounting seat is fixedly arranged at the position, above the first conveying rollers, of the side face of the rack, the second conveying rollers are rotationally arranged in the second mounting seat, a third mounting seat is fixedly arranged above the other side of the rack, and the third conveying rollers are rotationally arranged in the third mounting seat. A surface treating agent is uniformly transferred to the surface of a light conveying belt through a specially-made patterned roller, so that a layer of uniform special material film can be formed on the surface of the light conveying belt, and the physical property index of the light conveying belt is increased.

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 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.

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.