203 results about "Plastics industry" patented technology

The invention discloses a composite core material vacuum insulation panel and a preparation method thereof and relates to a vacuum insulation panel. The invention provides the composite core material vacuum insulation panel which utilizes a large number of scraps of rigid foam plastics in the existing rigid phenolic foam plastic industry, the rigid polyurethane foam plastic industry and the like and can significantly improve the comprehensive utilization rate of the rigid foam plastics, improve the environment and promote the recycling of materials, and the preparation method thereof. The composite core material vacuum insulation panel comprises a composite core material, a getter and a closed packaging bag. The composite core material vacuum insulation panel can be prepared by adopting the wet method or the dry method.

The invention relates to a high tenacity epoxy vinyl ester resin and the compounding method that takes open loop esterification reaction by using organic monad unsaturation carboxylic acid on the technology base, induces organic saturation dyadic carboxylic acid and end carboxy liquid nitrile butadiene rubber soft radical to improve the tenacity of the resin. The broken specific elongation 8-16%, impact intension is 20-30KJ/m². It could satisfy the special need in fiberglass-reinforced plastics industry. The invention is simple structure, no tree wastes, and has good stability.

The invention discloses a method for preparing a functional polymer material, and belongs to the field of fiber material and plastic processing. The invention aims at solving the shortcomings of low efficiency and high cost of carrying out functionalization on traditional polymer materials by blending and surface chemical grafting. The method disclosed by the invention comprises the following steps: acting an alternating electric field on functional material particles to be physically embedded on the surface of an extruded base material of the polymer material, carrying out chemical crosslinking and physical blending on a crosslinking group and the surface of the base material of the polymer material, and blowing cold air to the base material of the polymer material for curing or blowing cold air to the base material of the polymer material for curing after stretching to obtain the functional polymer material. The selection range of functional substances in the method disclosed by the invention is very wide, the utilization rate is high, the effect is good, the dosage is small, the preparation procedure of the material is short, and the efficiency is high, so that the method can be widely used in the fields of the textile and garment industry, plastic industry, environmental management, drug extraction and the like.

The invention provides a method for preparing masterbatch with high powder content. The method comprises the following steps: various raw materials are prepared, a Banbury mixer is kept at constant temperature, all the carriers and 50-80 percent of or all powder components, lubricant, dispersing agent and coupling agent are placed in the Banbury mixer for kneading; after the remained functional components are placed in the Banbury mixer for kneading, the Banbury mixer barn is turned over; the materials are decanted into the feeding hopper of a single screw extruder through a transporting receptacle; by the forced feeding of the feeding hopper, the single screw extruder is used to obtain functional masterbatch with high powder content. The method is capable of solving the problem that feeding is difficult during direct production of high powder when blending modified plastics system is filled, and the problem of difficult processing in the modified plastics industry; the masterbatch with high powder content can also meet the requirements of downstream products, and used to produce injection-moulded or extruded products.

The invention belongs to the environment protective field, which relates to a magnetic biological carrier used for processing wastewater. The invention comprises 7 to 21 wt percent magnetic particle and 79 to 93 wt percent high molecular polymer; the magnetic particle comprises ferroferric oxide, metallic iron powder, and magnetite; and the high molecular polymer comprises polyethylene, polypropylene, polystyrene and powder rubber. After being stirred and fully mixed, the high molecular polymer particle and the magnetic particle are delivered into an extruder, and the high molecular polymer particle and the magnetic particle are fully mixed, extruded and sheared through fusing under the effect of the extruder, to form the high molecular polymer particle containing the magnetic particle. Then the high molecular polymer particle is ground and screened, finally a magnetic carrier is immersed into a surface active agent, and therefore the magnetic biological carrier is obtained. When the magnetic biological carrier provided by the invention is used to the water treatment, the treatment effect is good, the preparation method is simple, the required reagents and materials are easy to be found, the magnetic biological carrier can be reused, the principles of the extrusion molding and the mixing in the plastic industry are used for reference, and the magnetic biological carrier has the advantages that the controllability is high, the production cycle is short, and the industrialized production is easy to be realized. In addition, the production cost is reduced while the used product resource is circularly utilized by using the used high molecular polymer.

A method of warming food dispensable from an aerosol dispenser. The aerosol dispenser is made from materials which can go into a single recycling stream having a single class of materials, as defined by the Society of the Plastics Industry, and particularly may exclusively comprise Class 1 materials suitable for eating in a microwave oven. Consumer products, such as food, contained in the aerosol dispenser may be heated in a microwave oven prior to dispensing. Upon dispensing, food retains residual heat, and is suitable for eating or further cooking. Other heated products in the aerosol dispenser may be comfortably applied to the skin, used as air freshener, used for cleaning, etc. The aerosol dispenser may have indicia indicating the aerosol dispenser is suitable for microwave heating. The aerosol dispenser can have indicia indicating the aerosol dispenser is suitable for heating in a microwave oven. The indicia may be thermochromic, indiciating when a desired temperature has been reached. The aerosol dispenser can have a safety valve, to safely relieve product and/or propellant pressure upon overpressurization in a microwave oven. The safety valve may be single use or reusable.

The invention provides a spherical and radial magnesium carbonate and a preparation method thereof. The method comprises the following steps: taking soluble magnesium salts and soluble carbonate as raw materials, taking surface active substances as additives, controlling reaction temperature at 15-75 DEG C in an aqueous solution system, keeping reaction for 2-20min; letting precipitate after the reaction stand for 1-6 days, washing and drying to obtain the spherical and radial magnesium carbonate product with intact crystal, little impurity in the crystal and high purity. The method is characterized by adding the surface active substances in preparation, which obviously improves shape and performance of the magnesium carbonate product, thus the magnesium carbonate product is easily filtered, better dispersed, and not easily conglobed. The magnesium carbonate product can be taken as an additive in industries such as plastics industry and rubber industry, and also can be taken as a raw material for preparing high-purity magnesia and other magnesium salts.

The present invention relates to purification equipment capable of effectively treating dense smoke and dust. The purification equipment comprises a combustion chamber, a large particle dust removing chamber, water grooves, a flue, an induced fan and a purification chamber, wherein the bottoms of the combustion chamber, the large particle dust removing chamber and the purification chamber are provided with the water grooves, a funnel-shaped dry dust removing tank is arranged inside the large particle dust removing chamber, a water tank is arranged on the one purification chamber side corresponding to the flue, the top of the purification chamber is provided with a plurality of filtration screens, separation plates are arranged between the adjacent filtration screens and on the bottom of the purification chamber, both sides of the filtration screen are provided with a mist-like spraying port, and the purification chamber position on the far end of the flue is provided with a gas discharge channel. According to the present invention, the technical difficult problem that a lot of flue dust produced during filtration screen combustion can not be treated so as to cause adverse effects to the surrounding environment and produce heavy interference for normal production in the conventional plastic industry is overcome, and the dry dust removing and wet dust removing combined manner is adopted to completely filter the produced flue dust, wherein the purification rate can be more than 95%.

The present invention relates to a process for preparing hydromagnesite in an aqueous environment. The invention further relates to such hydromagnesite having a specific platy-like morphology in combination with a specific average particle size and to their use as minerals, fillers and pigments in the paper, paint, rubber and plastics industries and to the use as flame-retardant.

The demolding agent is prepared with silicone grease 5-20 weight portions, silica rubber 10-60 weight portions, higher fatty acid salt 20-120 weight portions and paraffin 30-90 weight portions and through dissolving in gasoline solvent inside a reaction container, heating at 50-120 deg.c, and reflux stirring to form homogeneous demolding agent solution. The demolding agent may be sued in producing glass fiber reinforced epoxy plastic composite material in electronic industry, plastic industry, rubber industry, etc. and has the features of good demolding effect, no corrosion, no toxicity, high heat resistance and long shelf life.

The invention discloses a special polyethylene coloring masterbatch for a white thin film. The special polyethylene coloring masterbatch is prepared from the following raw materials in parts by weight: 20-38 parts of resin, 5-10 parts of polyethylene wax, 0.5-1.5 parts of white oil, 0.5-1.5 parts of zinc stearate, 10-35 parts of titanium dioxide and 25-40 parts of ground calcium carbonate; the resin is a mixture of low-density high pressure polyethylene and linear low-density polyethylene in the ratio of (5-8):3. A preparation method of the special polyethylene coloring masterbatch comprises the steps of weighing the raw materials, namely the mixed resin, titanium dioxide, ground calcium carbonate, polyethylene wax, zinc stearate and white oil, orderly adding the raw materials to a high-speed mixer and mixing thoroughly; after finishing mixing, transferring the mixture to a twin-screw extruder for melt extrusion, and then cooling, drying and pelleting, and finally, packaging. The special polyethylene coloring masterbatch is applied to the plastic industry, and is good in dispersity, high in heat resistance and low in production cost, and meanwhile, capable of improving the mechanical properties and the printing performance of the thin film products, and has outstanding price and quality advantages.

The invention relates to a method for producing a dry mineral pigment containing a product formed in situ by the multiple reaction of a calcium carbonate with the reaction product or products of said carbonate with at least one medium-strength to high-strength H3O<+> ion donor; with the reaction product or products of said carbonate with gaseous CO<2> formed in situ and/or from an external supply; and with at least one compound of formula R-X. The invention also relates to the mineral pigment obtained by said method, and to the applications thereof in the paint and/or plastics industries.

The invention provides a heat transfer release agent, a preparation method thereof and an oil injection operation-free use method thereof. The formula of the heat transfer release agent comprises a curing agent and a component which comprises a polyester resin, silicone oil, a defoamer, a leveling agent and a diluent according to certain weight percentages. The preparation method comprises the following steps: 1, stirring and uniformly mixing the diluent and the polyester resin; 2, stirring and uniformly mixing the defoamer, the silicone oil and the leveling agent; 2, and blending and uniformly mixing the component obtained in step 1 and the component obtained in step 2 to obtain the heat transfer release agent. In the use method, the thickness of the coating release layer is not less than 6mum, and the transferred release layer can be used as a protection layer; and by testing, the hardness can reach 2-3H, so a vanish baking effect is reached, and the oil injection operation is omitted, thereby the heat transfer release agent can be widely applied to the plastic industry.

The invention discloses a coating applied to a thread forming tap. The coating comprises a transition layer, a functional layer and a self-lubricating layer which are arranged on a substrate of the tap from inside to outside, wherein the transition layer is a ceramic-phase nanocrystal structure of at least one simple substance, nitride, carbide or nitrogen carbide in transition metal Ti, Cr and Zr with the thickness of 200-250nm; the main functional layer is a ceramic-phase nanocrystal structure compound layer formed by alternating TiAlCrN and CrN coatings with the thicknesses of 2-3 micrometers; and the self-lubricating layer is WC (wolfram carbide)/C with the thickness of 2 micrometers. The coating applied to the thread forming tap can allow the tap to have better wear resistance, adhesiveness resistance, high-temperature oxidation resistance and self-lubricating exclusiveness, so that the service life of the tap for titanium alloy processing is prolonged, the production cost is lowered, and the coating can be applied to various taps widely used in electronic and plastic industries.

The invention provides a bromized aliphatic olefin/vinyl aromatic copolymer flame retardant which serves as a common flame retardant which substitutes HBCD and is used in the plastic industry. The bromized aliphatic olefin component of the bromized aliphatic olefin/vinyl aromatic copolymer flame retardant at least contains a bromized olefin monomer; the bromized vinyl aromatic component comprises 2-bromostyryl, 4-bromostyryl, 2,4-dibromostyryl, 6-bromostyryl and 2,4,6-tribromostyryl. Meanwhile, the invention further relates to a preparation method of the bromized aliphatic olefin/vinyl aromatic copolymer flame retardant.

A method of warming food dispensable from an aerosol dispenser. The aerosol dispenser is made from materials which can go into a single recycling stream having a single class of materials, as defined by the Society of the Plastics Industry, and particularly may exclusively comprise Class 1 materials suitable for eating in a microwave oven. Consumer products, such as food, contained in the aerosol dispenser may be heated in a microwave oven prior to dispensing. Upon dispensing, food retains residual heat, and is suitable for eating or further cooking. Other heated products in the aerosol dispenser may be comfortably applied to the skin, used as air freshener, used for cleaning, etc. The aerosol dispenser may have indicia indicating the aerosol dispenser is suitable for microwave heating. The aerosol dispenser can have indicia indicating the aerosol dispenser is suitable for heating in a microwave oven. The indicia may be thermochromic, indicating when a desired temperature has been reached. The aerosol dispenser can have a safety valve, to safely relieve product and/or propellant pressure upon overpressurization in a microwave oven. The safety valve may be single use or reusable.

The invention discloses a high-whiteness and high-performance composite titanium dioxide and a preparation method thereof, and particularly relates to a high brightness composite titanium dioxide preparation method capable of significantly enhancing the hiding power of the composite titanium dioxide. The specific process is realized by the following steps: grinding, carbonization reaction coating, ball milling, modification and the like. The invention provides the composite titanium dioxide with the surface covered with a long carbon chain anionic surfactant, the composite titanium dioxide powder surface is provided with (-C15-20 H30-40) long chain groups and alcohol groups possible to produce by coupling agent hydrolysis, auto-polymerization groups are formed by condensation reaction, so that a high surface activity material is grafted on the composite titanium dioxide surface. The active ultrafine composite titanium dioxide prepared by the invention can be used in plastics industry, especially in PVC (polyvinyl chloride) profiles, PVC pinch plate s and the plastics of the like.

A preparation method of dicarboxylic dihydric alcohol ester plasticizer includes the steps of conducting esterification reaction for 0.5-48 h with monobasic acid and dihydric alcohol as the raw materials under the catalysis effect at a temperature of 100-250 DEG C, and conducting reduced pressure distillation to obtain the dicarboxylic dihydric alcohol ester product. Dicarboxylic dihydric alcohol ester is non-toxic plasticizer and can replace phthalic acid ester to be used for the field of plastic industry, rubber industry and the like. The product prepared through the method is high in yield, easy to separate and friendly to the environment and has good application prospects.

The invention relates to the technical field of chemical-material mixing equipment and particularly relates to a vacuumizing mixing machine. The vacuumizing mixing machine comprises a rack, wherein the lower part of the rack is provided with a mixing chamber; the upper part of the rack is provided with a pressing device; the mixing chamber is connected with a mixing device; a vacuumizing device for vacuumizing the mixing chamber is arranged above the mixing chamber. The vacuumizing mixing machine has the advantages that the mixing chamber can be automatically vacuumized in a working process, so that harmful gases in the mixing chamber are prevented from being exhausted to the outside and further causing pollution, chemical materials in the mixing chamber are prevented from being oxidized by outside air, and high-quality products can be produced; the vacuumizing mixing machine is of great significance in low-carbon development of the rubber and plastic industry and reduction of the energy consumption; the production efficiency and the quality of rubber products are guaranteed, and the vacuumizing mixing machine has an important strategic interest in building the modern high-quality, high-efficiency, energy-saving and emission-reducing type enterprises and establishing the environment-friendly society.

This invention is about an industrial continuous cracking device of plastics. The technical program of this invention is as following: it includes the outer cylinder and the internal cylinder, and the two sides of the internal cylinder are connected with the outer cylinder; at least one of the outer cylinder and the internal cylinder is set with heating mechanism, and the helical ribbon is fixed in the inside of the outer cylinder wall; the transport mechanism is fixed in the internal cylinder, with its direction contrary to the outer cylinder's the feeding direction. The structures of this invention are simple, and it can reduce the possessive space. Furthermore, when cycling in the cylinder, the solid heat carrier has no heat energy loss, and that can substantially reduce the operation cost of the equipment.

The invention provides high-strength high-toughness polypropylene regenerated particles, prepared from the following materials by weight percent: 40-60 percent of waste polypropylene, 5-15 percent ofpolyolefin resin, 5-10 percent of elastomer, 10-20 percent of inorganic rigid particle and coupling agent, 5-20 percent of enhancer, 1-10 percent of bulking agent, 0.1-1 percent of nucleating agent and 0.5-1 percent of other aids. The invention also provides specific production process parameters and a preparation method of the polypropylene regenerated particles; the preparation method comprisesthe steps of firstly adopting a high-speed mixer to evenly mix the proportioned materials, and then preparing the polypropylene regenerated particles by the shear plasticizing action of a twin-screw extruder. The waste polypropylene is taken as a main raw material to prepare high-performance recycled polypropylene, the technological content of the waste polypropylene is effectively improved, the waste polypropylene is recycled, both the resource shortage problem and the environment problem are solved, and certain guiding significance is achieved for the development of recycled plastics industry.