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.

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 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.