36results about How to "Increased Vicat softening point" patented technology

A nano-class polylactic acid-montmorillonie composition is prepared from polylactic acid, organically modified montmorillonite with different interlayer gaps, compatibilizer and antioxidizing agent through fusing and mixing polylactic acid with said montmorillonite to obtain mother material, and fusing and mixing the mother material with polylactic acid. Its advantages are high mechanical performance, resistance to high temp and biodegradability.

The invention relates to TPU (thermoplastic polyurethane) elastomer composition with high crystallization capacity. The composition is characterized by being prepared from 100 parts by weight of TPU elastomers and 0.1-20 parts by weight of layered inorganic compounds, wherein preferably, the layered inorganic compounds are modified layered inorganic compounds treated with an organic ion intercalation modifier, and the dosage of the organic ion intercalation modifier is 10wt%-60wt%, preferably, 30wt%-50wt%, of the modified layered inorganic compounds. The crystallization peak temperature of theTPU composition with high crystallization capacity can be increased by 10 DEG C or more, and degree of crystallinity is increased by 10% or higher.

The invention provides an adhesive for an anticorrosive paint for deep-sea oil-gas delivery steel tube outer walls and a preparation method thereof. The adhesive is prepared from the following raw materials in percentage by mass: 55-70% of polypropylene, 20-30% of functional polyolefin, 2-6% of reactive monomer, 1-3% of graphene, 2-5% of nano CaCO3, 0.1-0.6% of initiator, 0.4-0.8% of nucleating agent and 0.1-1.5% of antioxidant. The preparation method comprises the following steps: mixing the raw materials, stirring uniformly, putting in a double screw extruder, carrying out compounding and plastifying, drawing, cooling with water, airing, granulating, extruding for granulation, and packaging to obtain the adhesive. The adhesive has excellent mechanical properties, higher low-temperature impact resistance and wide application range.

The invention discloses an insulating flame-retardant MPP power cable tube and a preparation method thereof. According to the insulating flame-retardant MPP power cable tube and the preparation method thereof, isotactic polypropylene is high in crystallinity, and the prepared insulating flame-retardant MPP power cable tube has the characteristics of high vicat softening point, high modulus and low-temperature brittleness by adding the isotactic polypropylene; by adding ultra-high molecular weight polyethylene, the wear resistance of the prepared insulating flame-retardant MPP cable tube is good, and according to GB/T 8802-2001 measurement, the Vicat softening point of the prepared insulating flame-retardant MPP cable tube is 160-168 DEG C; meanwhile, the invention discloses cutting equipment, the cutting equipment can convey multiple strands of cable tubes at the same time; meanwhile, limiting rollers are matched with conveying, then conveying of the cable tubes with different diameters can be met; and meanwhile, the situation that multiple strands of cable tubes are mutually wound during conveying is avoided.

The invention discloses a heat-resistant insulating MPP cable tube and a preparation method thereof, the prepared heat-resistant insulating MPP cable tube has the characteristics of high Vicat softening point, high modulus and low-temperature brittleness by adding isotactic polypropylene, and the prepared heat-resistant insulating MPP cable tube has good wear resistance by adding ultra-high molecular weight polyethylene. According to measurement of GB/T 8802-2001, the Vicat softening point of the prepared heat-resistant insulating MPP cable tube is 154-163 DEG C. Meanwhile, the invention discloses extrusion cooling equipment which is provided with a plurality of circulating channels, so that circulating cooling of a plurality of cable tubes can be met at the same time, the cooling efficiency of the cable tubes is high, the extrusion cooling equipment can complete cooling of the bottom cable tube while cutting, conveying and cutting the top cable tube, and the production efficiency of the cable tube is greatly improved.

The invention provides a markrolon/modified polyester blending rolling base material and a preparation method thereof. The markrolon/modified polyester blending rolling base material comprises the following components by weight percent: 55-65% of makrolon, 15-20% of modified polyester, 4-8% of modified copolyesters additive, 3-5% of compatilizer 4051, 4-7% of titanium white, 2-6% of calcium carbonate and 0.01-0.1% of pigment. The vicat softening point of the invention can be 115 DEG C+/-2 (50-5kg of vicat A), the tensile strength is larger than 45Mpa, the tensile yield strength is larger than 750KJ/m<2>; and the invention meets the rolling technology requirement by improving the formula lubrication systems, can meet the requirement of the processes such as material application, card making technology of smart card base materials and the like.

The invention belongs to a method for preparing a heat-resisting polylactic acid nanocomposite through irradiation modification. The heat-resisting polylactic acid nanocomposite comprises polylactic acid, modified montmorillonite, PE (Poly Ethylene) wax, antioxidant, and polyfunctional monomer. Extruding granulation is carried out through a double-screw, then forming is realized through mould pressing or other methods, and finally a formed workpiece is placed in nitrogen atmosphere and is irradiated by electron beams at room temperature. The obtained product has excellent heat resistance.

The invention belongs to the technical field of high polymer materials and relates to a flame retardant enhanced PET material having a high glowing filament temperature and a preparation method of the material. The material is prepared from the following components in parts by weight: 45-72 parts of PET, 10-30 parts of glass fibers, 0.3-0.6 part of lubricant, 0.3-0.6 part of antioxidant, 0.2-0.7 part of nucleating agent, 15-20 parts of flame retardant and 3-5 parts of flexibilizer. The material has the characteristics of high strength, good flame retardancy, high glowing filament temperature, high temperature resistance, easy molding and the like, and has a wide application prospect in the household appliance industry.

The invention provides a high-crystallinity modified PGA material and a preparation method thereof. The modified PGA material is prepared from the following raw materials in parts by weight: 70-80 parts of polyglycolic acid resin, 5-15 parts of filler, 4-25 parts of plasticizer and 0.5-1 part of nucleating agent. The plasticizer is a mixture of polyvinyl alcohol and glycerol in a mass ratio of 1:(1.8-2.3), the molecular weight of polyvinyl alcohol is 300-500g/mol, and the alcoholysis degree is greater than or equal to 98%; the nucleating agent is selected from one or more of talcum powder, inositol and sebacic acid dimethylphenyl hydrazide; and the filler is selected from one or more of nano montmorillonite, nano calcium carbonate and edible starch. The polyglycolic acid resin is modified by adopting the plasticizer, the nucleating agent and the filler, so that the modified PGA material has relatively high crystallization property and can be used for preparing a high-heat-resistance product. The Vicat softening temperature is 205 to 210 DEG C; the semi-crystallization time is 5-15 seconds; and the relative crystallinity is 45-47%.

The invention discloses a calendering base material for a bank double-interface intelligent card and a preparation method of the calendering base material for a bank double-interface intelligent card. The calendering base material for a bank double-interface intelligent card is prepared from the following components in weight percentage: 49-53% of polyvinyl chloride resin, 20-25% of vinyl chloride-vinyl acetate copolymer resin, 7-8% of methyl methacrylate-butadiene-styrene copolymer, 2-3% of butyltin mercaptide, 0.5-0.7% of internal lubricant, 0.5-0.7% of external lubricant and 10-13% of active titanium dioxide. The double-interface intelligent card calendering base material considers the high-temperature laminating adhesion force of an internal chip and a rear coil card matrix, high-temperature resistance of the chip and the coil and the rigid-flexible characteristic of an external chip card matrix, and an equipment condition for producing the calendaring base material for a bank double-interface intelligent card (contact type and non-contact type) is realized.

The invention discloses an ABS (Acrylonitrile Butadiene Styrene) calendered substrate and a preparation method thereof. The ABS calendered substrate contains acrylonitrile-styrene copolymer and acrylonitrile-butadiene-styrene copolymer, wherein the acrylonitrile-styrene copolymer accounts for 69% by weight and the acrylonitrile-butadiene-styrene copolymer accounts for 29% by weight. The blend in the invention has the characteristics of environmental protection, good rigidity, impact resistance of ABS, high vicat softening point, easy processing, high surface quality, less bubble and excellent printing performance, and is suitable for making environmental-friendly and high heat-resistant cards of mobile phone SIM cards, television charging cards, oiling charging cards, and the like.

The invention discloses a novel heat-resistant PVC profile and a preparation method thereof.The novel heat-resistant PVC profile is composed of PVC resin powder and auxiliaries, the auxiliaries are composed of a heat-resistant modifier, a stabilizer, calcium carbonate, a flexibilizer, a processing modifier, titanium dioxide and a lubricant, and the heat-resistant agent is a styrene-butenoic acid-acrylonitrile copolymer; the PVC profile has the advantages that the Vicat softening point can be obviously improved by adding the heat-resistant agent styrene butenoic acid-acrylonitrile copolymer, and on the basis of obviously improving the heat resistance of the PVC profile, the impact strength and the tensile strength can be kept slightly changed, and the overall performance is excellent.

The invention relates to a salt drainage concealed conduit containing chitosan oligosaccharide. The salt drainage concealed conduit is characterized by being prepared from chitosan oligosaccharide. The invention further provides a preparation method of the salt drainage concealed conduit containing chitosan oligosaccharide. The preparation method is characterized by including a mixing step; according to the mixing step, the mixing temperature ranges from 220 DEG C to 223 DEG C, the mixing rotating speed ranges from 650 r/min to 670 r/min, and the mixing time ranges from 30 min to 40 min. The IZOD impact strength of the prepared salt drainage concealed conduit ranges from 18.1% to 21.2%; the elongation at break of the prepared salt drainage concealed conduit ranges from 218% to 235%; the tensile strength of the prepared salt drainage concealed conduit ranges from 237% to 253%; the heat deflection temperature of the prepared salt drainage concealed conduit ranges from 181 DEG C to 192 DEGC.

The invention provides a salt-removing pipe containing a high-strength water-permeable layer. The salt-removing pipe comprises a concealed pipe and the water-permeable layer, wherein the external surface of the concealed pipe is wound with a nylon mesh. The invention further provides an application of the salt-removing pipe containing the high-strength water-permeable layer in salt removing of saline-alkaline land. According to the salt-removing pipe and the application thereof, the concealed pipe is high in flexural strength, large in flexural modulus and high in Vicat softening point, wherein the flexural strength is 52MPa to 61MPa, the flexural modulus is 50MPa to 59MPa, and the Vicat softening point is 160 DEG C to 170 DEG C; the growth speed of plants planted in the saline-alkaline land which is subjected to salt-removing amendment by using the salt-removing pipe provided by the invention is increased greatly; the plants planted in the saline-alkaline land which is subjected to salt-removing amendment by using the salt-removing pipe provided by the invention are high in survival rate and high in disease resistance; and taking cedar for example, the survival rate of transplanted cedars can reach 95.8% to 99.0%, and the disease resistance to common diseases of the cedars is high.

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-heat-resistance electroplating-free PC/ASA alloy material for a vehicle heat dissipation grid. The material comprises following components in parts by weight: 30 to 60 parts of PC resin, 5 to 20 parts of ASA rubber powder, 30 to 60 parts of SAN resin, 5 to 10 parts of PBT resin, 1 to 6 partsof PMMA resin, 0.3 to 1 part of an antioxidant, 0.3 to 1 part of an ultraviolet absorbent, 5 to 15 parts of a heat-resistant agent, 1 to 5 parts of a compatilizer and 1 to 3 parts of metal powder. Based on a common PC/ASA formula, PBT resin and PMMA resin are added, the influence of water absorption of the material on the material appearance is reduced; meanwhile, a heat-resistant agent and a compound compatilizer are added to jointly improve the heat resistance and weather resistance of the modified material, and metal powder with a proper particle size is added, so that the surface of the product has special metallic luster, spraying or electroplating is not needed, and the material is environmentally friendly, safe, capable of meeting the high appearance requirement of a vehicle heat dissipation grid and wide in application range.

The invention discloses an environment-friendly vicat high-impact low-temperature-resistant vulcanization-pollution-resistant electric conduit and a preparation method thereof. The electric conduit is prepared from CPVC resin, HPVC resin, PVC resin, a filler, a calcium-zinc stabilizer, CPE, ABS, an anti-aging agent, an external lubricant, an internal lubricant and a pigment according to a certain proportion. The preparation method comprises the following steps: uniformly mixing the raw materials, adding the uniformly mixed raw materials into a double-screw extruder, setting the temperature of a machine barrel to be 160-200 DEG C, the temperature of a confluence core to be 150-155 DEG C, the temperature of a template to be 160-190 DEG C and the temperature of a mouth mold to be 160-190 DEG C, adding the pigment red through a stepping machine of the double-screw extruder, carrying out extrusion molding, and then carrying out cooling and shaping to obtain the environment-friendly high-vicat high-impact-resistance low-temperature-resistance vulcanization-pollution-resistance electric conduit. The electric conduit is high in vicat softening point, low in pipe ring stiffness at high temperature and good in impact resistance at low temperature. The preparation method of the electric conduit is simple, convenient to operate and low in preparation cost.