61results about How to "Reduce plasticizing temperature" patented technology

A process formula die carving includes compositions as the follows, 100 kg polyvinyl chloride in paste state, 80-100 kg dicapryl phthalate, 1-5 kg cadmium stearate, 1-5 g barium stearate, 0.5-2 kg bisphenol A and 0.01-1 kg dyestuff. The advantage of the present invention is using paste state polyvinyl chloride as main body, suspending each composition in dicapryl phthalate uniformly, plasticizing in not high temp and having excellent antidegradability.

The invention discloses environment-friendly low-temperature curing PVC plastisol and a preparation method thereof. The environment-friendly low-temperature curing PVC plastisol uses PVC paste resin, chloride vinyl acetate copolymerized paste resin, a plasticizer, a heat stabilizer, an adhesion promoter, BPU-Si, filler, a thixotropic agent, CaO, a viscosity reducer and the like as raw materials. The tensile strength of the prepared PVC plastisol can be up to 6-8 MPa, and the elongation at break can be up to 210%-270%. The adopted plasticizer is the novel environment-friendly plasticizer and has the advantages of being biodegradable, low in volatility, high in plastifying effect and the like. Under the synergistic effect of end-capped polyurethane and an adhesion promoter, the plastifying temperature (120-130 DEG C) of the plastisol can be effectively reduced, and the mechanical properties, elasticity and adhesion of the PVC plastisol are remarkably improved.

The invention relates to foaming sound-proof type acrylic resin car-bottom protection plastisol and the preparation process thereof. The foaming sound-proof type acrylic resin car-bottom protection plastisol comprises components with following percentage by weight, 4-8% volatile solvent, 20-40% plasticizing agent, 20-35% acrylic polymer, 5-20% polyurethane resin, 0.2-1.5% foaming agent, 0.2-1.5% thixotropic agent and 15-45% filling. The preparation process comprises mixing raw materials under controlled temperature, stirring, grinding with a three roll mill, stirring under -0.05-0.1MPa, screening and obtaining finished products. The plastisol of the invention has excellent sound-proof effect, less construction usage, safe construction condition and low cost.

The invention relates to a close type polyurethane prepolymer used for preparing low temperature plasticizing PVC plastisol, which can improve the adhesion of the PVC plastisol on an electrophoresis paint plate and simultaneously reduce the plasticizing temperature of the PVC plastisol so as to reduce energy consumption. The polyurethane prepolymer is characterized in that: the polyurethane prepolymer is polymerized by polyisocyanate and a polyhydroxy compound with the generation terminal group of the semi-prepolymer of - NCO and a sealant is applied to blocking the semi-prepolymer so as to obtain the close type polyurethane prepolymer. The preparation method is as follows: 50 portions to 500 portions of a diluent are added into a three-necked reactor, stirred and heated to 75 DEG C to 80 DEG C, then 100 portions to 400 portions of polyisocyanate are added, 250 portions to 800 portions of the polyhydroxy compound are added slowly, reaction lasts for 3 hours to 4 hours, then 10 portions to 200 portions of the sealant and 0 portion to 2 portions of a catalyst are added slowly and the reaction lasts for 2 hours and 3 hours.

The invention provides low temperature plasticized polyvinyl chloride plastisol. The low temperature plasticized polyvinyl chloride plastisol comprises, by weight, 20-70 parts of PVC paste resin, 20-50 parts of vinyl chloride-vinyl acetate copolymer paste resin, 2-20 parts of mixed resin, 10-80 parts of an ionic liquid, 10-80 parts of a plasticizer, 1-3 parts of a heat stabilizer, 0.1-1 part of an adhesion promoter, 5-40 parts of a filler, 0.1-2 parts of a thixotropic agent and 0-10 parts of a diluent. The low temperature plasticized polyvinyl chloride plastisol effectively reduces a plastisol plasticizing temperature to 120-130 DEG C, utilizes the nontoxic and nonvolatile ionic liquid so that environment protection and operation personnel safety are guaranteed, and can be prepared through simple processes without a special additional technology.

The invention discloses a PVC injection molding material and a PVC injection molding method capable of forming a high-light mirror surface effect on the surface of a product. The PVC injection moldingmaterial comprises the components in percentage by weight: 30-50% of PVC resin, 15-25% of dioctyl terephthalate, 18.5-38% of calcium carbonate, 2-8% of stabilizer and 1.5-2% of methyl methacrylate and acrylonitrile copolymers. The injection molding method comprises the steps: firstly, uniformly stirring the components; heating the components to be in a molten state; closing a mold; carrying out filling, carrying out injection molding by an injection molding machine, wherein the injection molding pressure at the first stage is 15-30Bar, the flow at the first stage is 15-35mm / s, the injection molding time at the first stage is 2-5s, the injection molding pressure at the second stage is 15-30Bar, the flow at the second stage is 20-40mm / s, the injection molding time at the second stage is 1-3s, the injection molding pressure at the third stage is 10-25Bar, the flow at the third stage is 10-25mm / s, and the injection molding time at the third stage is 2-4s; maintaining the pressure; carrying out cooling; and carrying out demolding. By using the injection molding method disclosed by the invention, a high-light mirror surface effect can be formed on the surface of the product, the requirement of a terminal client to the appearance of the product can be met, and meanwhile, the competitiveness of the product on the market can be improved.

The invention provides a high-temperature-resistant PVC enhanced hose which comprises an inner tube and an outer tube. The inner tube or the outer tube is prepared from, by mass, 100 parts of PVC, 1.5-3 parts of heat stabilizer, 20-35 parts of trioctyl trimellitate, 5-15 parts of polyester plasticizer, 2-3 parts of toughening modification agent, 10-20 parts of calcium carbonate filler, 1-3 parts of antioxidant and one part or less of toner. Correspondingly, the invention further provides a preparation method of the high-temperature-resistant PVC enhanced hose. The prepared high-temperature-resistant PVC enhanced hose is excellent in heat stability, breaking tenacity and tensile strength; compared with PVC resin in the prior art, the high-temperature-resistant PVC enhanced hose is excellent in performance, nontoxic and environmentally friendly, meets the requirements of national laws and regulations and industrial standards, and has the quite considerable application market.

A process formula die carving includes compositions as the follows, 100 kg polyvinyl chloride in paste state, 80-100 kg dicapryl phthalate, 1-5 kg cadmium stearate, 1-5 g barium stearate, 0.5-2 kg bisphenol A and 0.01-1 kg dyestuff. The advantage of the present invention is using paste state polyvinyl chloride as main body, suspending each composition in dicapryl phthalate uniformly, plasticizing in not high temp and having excellent antidegradability.

A preparation method of vinyl chloride-vinyl acetate copolymer blended resin. Add vinyl chloride, vinyl acetate, initiator, sizing agent, pH stabilizer, dispersant, auxiliary dispersant and water into the polymerization kettle, react at a temperature of 40-70°C for 3-8 hours, and then add terminator , the aqueous suspension of vinyl chloride-vinyl acetate copolymer blended resin can be obtained, and then purified by conventional methods to remove unreacted vinyl chloride monomer and vinyl acetate monomer, centrifugal dehydration and drying to obtain the finished product . The invention is easy to operate and simple in equipment, and the prepared vinyl chloride-vinyl acetate resin has a compact particle structure, fine and uniform particles, concentrated distribution and low oil absorption rate, can greatly reduce the plasticizing temperature, and improve the storage stability of the plastisol, Improve the flow thixotropy of the paste. Can be widely used in artificial leather, floor leather, wallpaper and other adhesives, marine coatings, steel plate coatings, automotive sealants, anti-rust coatings, and anti-stone impact coatings for automotive chassis.

The invention discloses a foaming waste low-temperature cracking extruding machine and an extrusion method, and belongs to the field of waste plasticizing extrusion. The foaming waste low-temperaturecracking extrusion method comprises the steps that a, a foaming waste cracking extrusion system is established, the foaming waste cracking extrusion system comprises a driving mechanism, an extrusionmechanism, and a feeding mechanism, and the feeding mechanism is connected with the extrusion mechanism; the extrusion mechanism comprises an extrusion screw and a screw barrel, the screw barrel is provided with a heating part, and the driving mechanism is connected with the extrusion screw in a transmission mode; and the extrusion screw comprises a connecting section, a feeding compression section, a crushing section, and a grinding section; b, the screw barrel is preheated by the heating part; c. the extrusion screw is driven through the driving mechanism to idle at a speed of no more than 40r / min; rotation speed of the extrusion screw is increased, preliminary feeding is conducted, and at the same time, the driving mechanism provides a low-temperature of 165 to 190 degrees; d, after discharging is normal, the extrusion screw rotates at a speed of 40 r / min to 50 r / min and keeps feeding; and e, discharged materials are collected. According to the foaming waste low-temperature crackingextruding machine and the extrusion method, low-temperature plasticizing extrusion is realized, waste recycling utilization rate is high, and effects of energy saving and environmental protection areachieved.

The invention discloses a piece of wallpaper containing a compound modified acrylic resin emulsion coating and being capable of shielding electromagnetic radiation. The cellulose acetate copolymerized modified water-based acrylic resin emulsion is served as a resin adhesive applied to a coating sizing agent of the wallpaper, so that the performance is stable, no chronic volatile toxic compound, such as, formaldehyde, and the like, is contained, the formed coating is smooth and elastic, and the wallpaper has the functions of water resistance, dirt resistance, bacterial resistance, and the like; the plasticizing temperature of the wallpaper is 120-150 DEG C lower than the plasticizing temperature of the traditional PVC thickener; the nanometer nickel-containing superfine aluminum silicate-polylactic acid porous fiber has excellent dispersibility and suspension property and has the effects of reinforcing, extinction, weather resistance, electromagnetic radiation shielding, and the like; the use property of the wallpaper is effectively improved.