33results about How to "Increase stretch" patented technology

The invention discloses a meteorologic balloon and a production method thereof. The raw materials consist of a solid raw material, an oily raw material and a gluey raw material; the solid raw material comprises the following components by weight: 0 to 0.30 portion of potassium hydroxide, 0 to 0.15 portion of casein, 0 to 0.10 portion of peregal O, 1.00 to 3 portions of sulfur, 1.00 to 2 portions of N-phenyl-2-naphthylamine, 1.00 to 2 portions of N-phenyl-N'-isopropyl-ursol, 1.50 to 3 portions of ethyl-phenyl-zinc dithiocarbamate, 0.20 to 5 portions of zinc oxide, and 5 to 30 portions of chloroprene polymer; the oily raw material is dioctyl sebacate, and the weight rate of the dioctyl sebacate is 5.00 to 10.0 portions; and the gluey raw material is centrifugally-concentrated natural latex, and the adding amount of the centrifugal concentrated natural latex is 100 portions. The weight of the meteorologic balloon is 1,600 to 1,700 grams, the length of the balloon body is 3.05 to 3.55 meters, the width of the ball handle is 10 to 11 centimeters, and the length of the ball handle is 12 to 16 centimeters. The meteorologic balloon can adapt to the requirement of probing high-altitude meteorological elements of more than 35,000 meters, has the advantages of good aging resistance, high blastoff height, long balloon service time and the like, and can effectively overcome the morning-evening difference.

The invention discloses a preparation method of environmentally friendly building adhesive. The method comprises the steps that 1), gum acacia and shell lac are poured into an agitating pan, heating agitation processing is conducted under the condition of compression to obtain viscous liquid; 2), terpene resin, glycerol ester of rosin, turpentine, aluminium silicate powder, white carbon black andthe like are poured into an agitation tank to perform agitation processing to obtain a mixture; 3), emulsion obtained in step 2) is poured into the viscous liquid obtained in step 1), agitation is constantly performed until the material is cooled down to room temperature, ethanol is added, and emulsifying agitation processing is conducted to obtain the adhesive. According to the method, the residual formaldehyde content of the environmentally friendly building adhesive is extremely low, the health of human is not affected, which is beneficial to the protection of the environment.

The invention relates to a high-performance plastic bag, and belongs to the field of plastic bag manufacturing. Raw materials for producing the high-performance plastic bag comprise polyolefin, polypropylene compatilizer, nano holmium oxide, low density polyethylene and acrylic resin. The high-performance plastic bag comprises, by weight percentage, 10-30% of the polyolefin, 10-15% of the polypropylene compatilizer, 10-15% of the nano holmium oxide, 20-40% of the low density polyethylene and 20-30% of the acrylic resin. According to the high-performance plastic bag, due to the fact that the raw materials such as the polypropylene compatilizer and the nano holmium oxide are added, and the tensile strength of the plastic bag is improved; meanwhile, when the high-performance plastic bag is used at a low temperature, breakage of the plastic bag is avoided, the flexibility can be better, and daily use is convenient.

The invention discloses environment-friendly styrene-acrylic emulsion paint. The paint is prepared from the components in parts by weight as follows; 20-50 parts of styrene, 10-40 parts of methyl acrylate, 5-20 parts of epoxy resin, 5-10 parts of polyolefin elastomers, 10-15 parts of hydroxyethyl cellulose, 1-5 parts of sodium bicarbonate, 5-8 parts of closed cell perlite, 5-8 parts of talc powder, 1-8 parts of an antibacterial agent, 8-15 parts of an emulsifier and 15-25 parts of water. The paint adopts simple and reasonable composition, is non-toxic and odorless, has the clean and smooth surface and good water resistance, cannot fall off easily and is applicable to painting of internal walls, and a paint coat is dried quickly; besides, the paint is antibacterial, anti-mildew, washable, wear-resistant and long in service life; the paint cannot fall off easily, cannot pulverize and decolorize and is excellent in fouling resistance and weather resistance and convenient to use; meanwhile, a paint film is smooth and compact, and the thermal insulation effect is good. The invention further discloses a preparation method of the environment-friendly styrene-acrylic emulsion paint. The method is simple and safe in process and high in operability.

The invention discloses a supercritical fluid auxiliary melt differential electrostatic spinning device which is composed of a feeding system, a supercritical fluid supply system, a fluid mixing system, a pressure relief system, a spinning system and a winding roller. The pressure relief system is composed of a melt outlet valve, a pressure relief kettle, a pressure reducing valve and a stirring device, the spinning system is composed of a nozzle, an electrode plate, an electrode plate support and a high-voltage electrostatic power source, and the collecting roller is located behind the electrode plate and receives fibers generated by the nozzle. According to the device, the supercritical fluid and the melt are stirred and mixed in the high-pressure stirring kettle through the multiple sets of blades to form a uniform blend, the viscosity of the melt is reduced through the supercritical fluid, bubbles wrapped by the melt are broken, the melt at the broken position is differentiated into fibers, and the blend has a large pressure difference with the external environment, so that the melt is dispersed in the melt, and the melt is dispersed in the melt. The stretching degree of the fiber can be greatly improved, the diameter of the fiber is reduced, and uniform and stable preparation of the nanofiber is realized.

The invention discloses a high-strength fiber reinforced composite material connecting piece and a formula and manufacturing process thereof. The connecting piece comprises an anchor fiber rod and aninjection molding intermediate body; a dovetail groove or a locking groove is formed in the anchor fiber rod; the injection molding intermediate body wraps the middle section of the anchor fiber rod;and a screw thread is disposed in the injection molding intermediate body. By changing the structures of the anchor fiber rod and the injection molding intermediate body, the contact area of the connecting piece and concrete can be greatly increased, and thus the drawing force is enhanced. The drawing force of the connecting piece can reach 15-20 kN; by changing the cross section shape of the anchor fiber rod, the stretching and bending degrees of the composite material are greatly improved; and the stretching strength of the connecting piece can reach 900-1100 MPa, and the bending strength ofthe connecting piece can reach 1000-1200 MPa.

The invention discloses a crab feed and a preparation method thereof, and belongs to the field of feeds. According to the crab feed disclosed by the invention, nutrient substances of protein nutrientsand oil and fat nutrients are added, so that in the growth process of crabs, nutrition requirements are met; active agents are added, so that the digestive and absorption of the nutrient substances by the crabs is promoted, pathogenic microorganisms are restrained, and the attack rate of the crabs is reduced; transferring and accumulation of fat can be promoted by phosphatide substances in the proteins, so the absorption and utilization of unsaturated fatty acid are promoted, and the crabs have high nutrient values and good immunocompetence; the feed is easy to disperse in water, nutrient substances in the feed are easy to oxidize, and the obtained crab feed is packaged, so that the efficiency that the feed is eaten by the crabs in water can be improved, and the oxidizing damage of the nutrient substances is also avoided; through adoption of the preparation method disclosed by the invention, the problems caused by a conventional feed that the crabs are high in number of diseases, lowin survival rate, and low in reproduction speed; and the yield of the crabs is not increased, so that the breeding benefit is seriously influenced are solved.

The invention provides an automatic mechanical arm belt wheel transmission mechanism, and relates to the technical field of mechanical transmission structures. The problems that automatic air collection type cooling of a belt cannot be automatically realized in the transmission process through structural improvement, and other structures cannot be linked to realize automatic cooling during working through structural improvement are solved. The automatic mechanical arm belt wheel transmission mechanism comprises a base body; a first transmission structure, a second transmission structure, a third transmission structure and an auxiliary structure are rotationally connected to the base body; a through hole A is obliquely formed, and the inclination angle is -45 degrees, so that heat dissipation of a belt A can be realized when air is sprayed from the through the through hole A, and the through hole A formed at -45 degrees can reduce the resistance during rotation of a fourth rotating shaft and the friction force on the belt A; the inclination angle of through holes B is 45 degrees, and the through holes B formed in the annular array form an air collecting structure of the fourth rotating shaft, so that automatic air collection can be performed through the through holes B when the fourth rotating shaft rotates.