138 results about "Processing aid" patented technology

The invention relates to the technical field of composite films, and provides a PE film, a preparation method thereof and application of the PE film in metal powder packaging. The PE film comprises an outer layer, a middle layer and an inner layer which are sequentially arranged, preparation raw materials of the outer layer comprise low-density polyethylene, linear low-density polyethylene, metallocene medium-density polyethylene and a processing aid, and preparation raw materials of the middle layer comprise low-density polyethylene, linear low-density polyethylene, high-density polyethylene and a processing aid. And the inner layer is prepared from the following raw materials: low-density polyethylene, an antistatic agent and a processing aid. When the PE film is used for packaging metal powder, the effect that the metal powder does not adhere to a bag can be achieved, the phenomenon that a seal is not firm due to the fact that metal adheres to the seal is avoided, meanwhile, waste of the metal powder is avoided, and the PE film has wide application prospects.

The invention belongs to the technical field of composite processing aids, and particularly relates to a processing aid for a tensile CPVC (chlorinated polyvinyl chloride) board and a preparation process thereof, and the preparation process comprises the following steps: dispersing glass fibers in a KH-550 hydrolysate for stirring reaction, dispersing in a bisphenol A epoxy resin solution for stirring reaction after washing and drying, dispersing in an ODI (Olefin Diisocyanate) solution for stirring reaction after washing and drying, and drying to obtain the tensile CPVC board. After washing, dispersing in a GMA solution for stirring reaction, and washing and drying to obtain modified glass fibers; and dispersing the modified glass fiber in the dispersion liquid, adding an initiator and BA, heating, stirring for reaction, adding an initiator and MMA, stirring for reaction, washing and drying to obtain the processing aid. When a CPVC plate prepared by blending the processing aid and CPVC is used in a high-temperature and high-humidity environment, high tensile strength and impact strength can be kept for a long time.

The invention provides a PVC (polyvinyl chloride) plate for a refrigerator back plate, which is prepared from the following raw materials: 50 to 75 parts of PVC resin, 5 to 20 parts of chlorinated polyvinyl chloride, 5 to 15 parts of phosphorus-nitrogen flame retardant, 5 to 20 parts of inorganic flame retardant, 3 to 10 parts of mica powder, 3 to 10 parts of plasticizer, 0.2 to 3 parts of heat stabilizer, 0.2 to 3 parts of lubricant, 0.2 to 3 parts of coupling agent, 0.3 to 3 parts of nucleating agent, 0.5 to 1 part of antioxidant and 2 to 10 parts of processing aid. The phosphorus-nitrogen flame retardant is one or a combination of melamine polyphosphate, ammonium polyphosphate and phosphazene flame retardants; the inorganic flame retardant is one or a combination of aluminum hydroxide, magnesium hydroxide and antimony trioxide. The composition of the flame retardant in the PVC board is regulated and controlled, and the flame retardant property of the refrigerator back board can be greatly improved by compounding the phosphorus-nitrogen intumescent flame retardant and the inorganic flame retardant, so that the flame retardant property of the refrigerator back board reaches the 5VA grade and meets the industrial standard.

The invention relates to the technical field of high polymer materials, in particular to a high-fatigue-resistance TPEE air fiber mat and a preparation method thereof.The high-fatigue-resistance TPEE air fiber mat is prepared from, by weight, 80-90 parts of TPEE, 1-5 parts of processing agent and 0.05-0.1 part of initiator. The TPEE air fiber mat prepared by the invention has good mechanical property, antibacterial property and high fatigue resistance.

The invention provides a polyolefin melt extrusion method based on internal source gas-assisted lubrication and a fluoride-free processing aid for realizing the method, and belongs to the technical field of plastic molding processing. According to the invention, during polyolefin melt extrusion processing molding, gas is introduced into a polyolefin melt in situ and is dissolved in the polyolefin melt under the action of pressure provided by equipment, and melt flow is assisted through plasticization and other mechanisms; gas dissolved in the tail section of melt extrusion processing equipment and a molding die area is instantly released and diffused between a melt and the inner surface of the equipment, so that the melt flow is efficiently assisted, the melt fracture is slowed down, the die expansion and die material accumulation are reduced, the energy consumption is effectively reduced while the processing speed and efficiency are improved, and the performance of a plastic product is not changed; the auxiliary agent does not contain any fluorine-containing substance, does not generate fluorine-containing chemical residues, can play a role when the addition amount is relatively low, and can replace a traditional fluorine-containing polymer processing auxiliary agent.

The invention provides a method for improving interfacial compatibility of PE (polyethylene) and PS (polystyrene), and belongs to the technical field of HI PS production. The method comprises the following steps: preparing compatilizer premixed master batches of a hydrogenated styrene-butadiene block copolymer and a styrene-butadiene-styrene block copolymer, and determining an optimal compatilizer dosage by adopting an interfacial tension prediction model; a multi-stage melt blending process is adopted to realize segmented addition and step-by-step mixing of components, inorganic powder and a processing aid are added to form a composite aid system to regulate crystallization behavior and improve thermal stability, and process parameters such as temperature and rotating speed of a twin-screw extruder are controlled to promote dispersion orientation of a compatilizer on an interface. And optimal cooling parameters are determined through a graded cooling temperature optimization experiment and iterative optimization of a shortest path algorithm to realize matching of polyethylene crystallization and a polystyrene curing process, so that the technical problem of unstable mechanical properties of an alloy material caused by poor interfacial compatibility of polyethylene and polystyrene is solved.

The invention is suitable for the technical field of heat shrink films, and provides a polyolefin cross-linked heat shrink film for fresh food packaging and a preparation method thereof.The heat shrink film is prepared from co-polypropylene, polyethylene, metallocene polypropylene, ethylene-octylene copolymer and a processing assistant.The invention further provides the preparation method of the heat shrink film. A five-layer or more-layer co-extrusion three-bubble method synchronous stretching production process is adopted, electron beam irradiation crosslinking is adopted, and the polyolefin crosslinking heat shrinkage film for fresh food packaging provided by the invention adopts a method of blending modification of low-softening-point elastomers such as metallocene polypropylene and POE, so that the shrinkage stress and initial shrinkage temperature of the film are reduced; a three-bubble method production process is adopted, the performance of the film is improved, crystal overgrowth is inhibited through a rapid cooling process, transparency and shrinkage uniformity are improved, and the mechanical property and thermal shrinkage of the film are improved through electron beam irradiation crosslinking.

The invention relates to the field of medicines and functional foods, in particular to a preparation method of a nanoscale curcumin suspension, the curcumin suspension and application. The preparation method of the nanoscale curcumin suspension comprises the following steps: (1) adding phospholipid and polyglycerol ester into warm water, and carrying out high-speed shearing and uniform dispersion to obtain a mixed solution A; (2) weighing curcumin, adding the curcumin into the mixed solution A, and performing high-speed shearing and uniform dispersion to obtain a mixed solution B; and (3) grinding the mixed solution B in a sand mill to obtain the curcumin suspension, wherein the particle size of the curcumin is 100-200 nm. The curcumin prepared by the preparation method of the curcumin suspension has the characteristics of high loading capacity, high stability and high safety, and solves the problems that in the prior art, the curcumin is low in loading capacity and poor in safety, dissolving equipment is needed during use, and processing aids such as organic solvents are used during processing; the application range of the curcumin is greatly expanded; the preparation convenience is improved.

The invention discloses a high-impact-resistance plate and a preparation method thereof, and relates to the technical field of preparation of stone-plastic plates. The raw materials comprise the following components in parts by mass: 100-120 parts of a vinyl chloride-butadiene-styrene-acrylonitrile copolymer, 50-150 parts of calcium powder, 15-35 parts of a plasticizer, 0.2-0.8 part of an antioxidant, 1.5-5 parts of a stabilizer and 5-15 parts of a processing aid. The preparation method comprises the steps of mixing, banburying, open milling, calendering and cooling traction discharging. According to the invention, the influence of the raw material formula ratio of the stone-plastic plate on the impact resistance of the plate is explored, and a proper processing mode is matched, so that the stone-plastic plate prepared by taking the ABS copolymer and the calcium powder as main raw materials has better impact resistance.

The invention relates to the technical field of composite membranes, and provides a PE gasket membrane, a composite membrane, a preparation method and application. The PE gasket film comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from low-density polyethylene, metallocene low-density polyethylene and a processing aid, and the middle layer is prepared from low-density polyethylene, high-density polyethylene and a processing aid. The preparation raw materials of the inner layer comprise low-density polyethylene, metallocene low-density polyethylene and a processing aid. The PE gasket film provided by the invention has few crystal point impurities, is safer and more sanitary, can avoid deterioration of contents caused by heat-sealing air leakage, is easy to die-cut, does not have a wiredrawing phenomenon during slicing, and can meet the use requirements of high-end bottled beverages, medicine bottles and the like.

A processing aid for an extrudable food composition includes from about 60% to about 99% by weight of at least one edible emulsifier and from about 1% to about 40% by weight of a short chain carboxylic acid. The extrudable food composition may include from about 80% to about 90% by weight of a raw material; from about 1% to about 18% by weight added moisture; from about 0.1% to about 3% of a processing aid, wherein the processing aid includes at least one edible emulsifier and at least one short chain carboxylic acid. The raw material is selected from one or more of corn meal, whole grain corn meal, rice, whole grain flour, rice pea, brown rice, wheat flour, whole wheat flour, pea flour, black bean, pinto bean flour, potato flour, and mixtures thereof.

The invention discloses enzymolysis highland barley flour and a preparation process thereof, the enzymolysis highland barley flour is composed of highland barley, an enzyme preparation and an acidity regulator or processing aid, the mass fraction of the enzyme preparation is 0.05%-0.5% of the mass fraction of the highland barley, and the mass fraction of the acidity regulator or processing aid is 0.05%-0.5% of the mass fraction of the highland barley; under the action of a grinding technology, an enzymolysis technology and the like, the highland barley flavor is kept good, the mouthfeel is fine and smooth, the highland barley beverage with good sensory quality can be produced by matching with other materials, when the highland barley beverage is redissolved with normal-temperature water according to the material-water ratio of 1: 6, the powder is dissolved quickly and stably, the solution system is stable, and no obvious precipitate exists after long-time standing.

The present application relates to a kind of toughened heat-resistant full biodegradable polylactic acid packaging material and its preparation method.Polylactic acid, PBAT, corn starch, stearic acid starch ester, mannitol, epoxy-terminated PBAT-PLA block oligomer, PDLA grafted white carbon black and processing aid are dried, premixed plasticized, melt reaction blending, extruded and granulated and formed, to obtain packaging material.Epoxy-terminated PBAT-PLA block oligomer improves interface compatibility and toughening, PDLA grafted white carbon black promotes crystallization and stereocomplex crystal formation, and both synergistically improve material toughness, impact resistance, heat resistance and hot water dimensional stability.

The invention relates to the technical field of waterproof plates, and provides a tear-resistant waterproof plate and a preparation method thereof. The tear-resistant waterproof board is prepared from the following raw materials in parts by weight: 30 to 35 parts of ethylene-vinyl acetate copolymer, 60 to 80 parts of tear-resistant master batch, 0.5 to 1.5 parts of first antioxidant and 3 to 4 parts of compatilizer, the tear-resistant master batch comprises the following raw material components in parts by weight: 20-30 parts of high-density polyethylene, 40-50 parts of linear low-density polyethylene, 1-3 parts of a processing aid and 0.5-1 part of a second antioxidant, and the processing aid comprises fluoro-dimer p-xylene and poly-alpha-methylstyrene. By means of the technical scheme, the problem that in the prior art, waterproof plates are insufficient in tear resistance is solved.

The invention discloses a preparation method of PVC (polyvinyl chloride) single leather capable of releasing marine aroma, which comprises the following steps: preparing a PVC paste material which comprises a first component consisting of PVC, a second component consisting of a plasticizer and a stabilizer and a third component consisting of a filler, a processing aid and a functional aid, the three components are uniformly mixed in a stirring manner to form the PVC paste; the preparation method comprises the following steps: curing spices, adding the spices into microcapsules, adding the microcapsules in a PVC paste preparation process, uniformly mixing in a stirring manner, and standing for 3-6 hours in a sealed manner for use; and then the PVC single leather with the marine aroma is produced through a coating process. The invention provides a simple and efficient process mode for preparing the marine aroma type PVC single leather, special equipment is not needed for production, additional auxiliaries are not needed, the marine aroma type PVC single leather can be applied to automotive interiors, pungent smell of traditional PVC single leather products is effectively shielded, and the acceptance of customers is high.

The invention relates to the technical field of dairy product processing, in particular to a dairy product capable of controlling carbohydrates and a preparation method thereof, the preparation method comprises the following steps: 1) separating raw milk to obtain skimmed milk and single cream; 2) diverting the skimmed milk into a first skimmed milk stream and a second skimmed milk stream; 3) performing ultrafiltration concentration on the first skimmed milk flow to obtain ultrafiltration concentrated skimmed milk; 4) performing nanofiltration concentration on the second skimmed milk flow to obtain nanofiltration concentrated skimmed milk; and 5) mixing the ultra-filtered and concentrated skimmed milk obtained in the step 3) and the nano-filtered and concentrated skimmed milk obtained in the step 4) to obtain the dairy product for controlling carbohydrates. According to the invention, no processing aid is used, and the low-sodium high-calcium dairy product can be prepared on the premise of controlling carbohydrates only through combined use of processes, so that the health demand and the taste demand of consumers are both considered.

A packaging paper for sharp-edged objects and / or objects having unevenly arranged, protruding, substantially non-deformable elevations on at least one of the surfaces of the object, consisting of kraft pulp as the main constituent and fillers, starch, sizing agent and additional process aids. The packaging paper containing at least 95% primary pulp having a length-weighted average fiber length of at least 2.0 mm and cationic starch and other process aids. The packaging paper has an elongation at break in the machine direction (MD) according to ISO 1924-3:2005 of at least 6.0%, a puncture energy index according to DIN EN 14477:2004 at a test speed of 10.0 mm / min, measured on any side of the packaging paper, in the range of 30 to 75 mJ·m2 / kg and a kappa number according to ISO 302:2015 of between 35 and 38.

The invention discloses a solid beer-flavor effervescent tablet and a preparation method thereof. The solid beer-flavor effervescent tablet comprises an acid source, an alkali source, a beer-flavor matrix, a sweetening agent, a filling agent, a nutrition enhancer and a processing aid, wherein the acid source comprises anhydrous citric acid, and the alkali source comprises sodium bicarbonate; the beer flavor matrix comprises malt flour, a humulus lupulus extract and a flavor enhancer, and the flavor enhancer comprises flavor essence and concentrated guava juice; the nutrition enhancer comprises vitamin B, mineral salt and an amino acid composition. According to the invention, rich and pure beer flavor and rich, fine and lasting foam can be generated after the beer is disintegrated in water, and the beer has good portability and long shelf life, and has a nutrition supplementing function.

The utility model provides a plastic particle mixing and proportioning device which comprises a mixing tank, batching mechanisms are symmetrically and fixedly arranged on the two sides of the top of the mixing tank, each batching mechanism comprises a batching barrel, the batching barrels are fixedly arranged on the two sides of the top of the mixing tank, and lifting adjustment can be conducted on a lifting plate through a hand wheel and an adjusting screw. The bottom space of the lifting plate can be conveniently adjusted according to two pairs of carbon black color master batches and processing aids, stirring mechanisms such as a servo motor and a stirring paddle drive a poke rod to extrude a baffle, so that the baffle is separated from a lower discharge port, sheath materials can be conveniently dispersed and added into the mixing tank through an arc-shaped cover and a conical cover, and the mixing efficiency is improved. The mixing and proportioning efficiency of polyethylene and carbon black color master batches or processing aids is improved, so that the processing efficiency of the cable sheath is improved, and the practicability is high.

The invention discloses a high-breathability deoxidizer packaging material and a manufacturing method, and belongs to the technical field of deoxidizer packaging materials, the high-breathability deoxidizer packaging material comprises an inner layer, a middle layer and an outer layer, the coating film is prepared from the following raw materials in parts by weight: 60 to 90 parts of polylactic acid, 10 to 30 parts of polycaprolactone, 10 to 20 parts of nano silicon dioxide, 5 to 15 parts of polyvinyl alcohol, 5 to 10 parts of modified starch, 3 to 8 parts of compatilizer and 2 to 5 parts of processing aid. According to the invention, through blending of polylactic acid and polycaprolactone, the flexibility and degradability of the material are improved, the addition of nano-silica and polyvinyl alcohol forms a microporous structure, the oxygen permeability is significantly improved, the introduction of the compatilizer enhances the interface bonding force among the components, and the mechanical properties and film-forming uniformity of the material are improved; the packaging material prepared by the invention not only has good air permeability and high strength, but also has the advantages of degradability, environmental protection and the like, and is suitable for the packaging requirements of various deoxidizing agents.

The application discloses a polypropylene composite material and a preparation method and application thereof, and belongs to the technical field of high polymer materials. The polypropylene composite material with high impact strength, high transparency and excellent low-temperature toughness is prepared by using the first polypropylene with a certain melt index, the second polypropylene, a polypropylene-based elastomer toughening agent and a processing aid. The properties of the obtained polypropylene composite material are close to the level of transparent ABS material, and the polypropylene composite material has the advantages of low cost and food-grade application, is suitable for fields such as household appliances, medical devices and commodity packaging, and has a good market application prospect.

The application belongs to the technical field of composite processing aids, and particularly relates to a processing aid for tensile CPVC plate and a preparation process thereof, which comprises the following steps: dispersing glass fibers in a KH-550 hydrolysate, stirring and reacting, washing and drying, dispersing in a bisphenol A type epoxy resin solution, stirring and reacting, washing and drying, dispersing in an ODI solution, stirring and reacting, washing and drying, dispersing in a GMA solution, stirring and reacting, washing and drying, and obtaining modified glass fibers; dispersing the modified glass fibers in a dispersion liquid, adding initiators and BA, heating, stirring and reacting, adding initiators and MMA, stirring and reacting, washing and drying, and obtaining the processing aid. The CPVC plate prepared by blending the processing aid with CPVC can maintain high tensile strength and impact strength for a long time when used in a high-temperature and high-humidity environment.

The application discloses a kind of polymer hollow fiber membrane and its preparation method and application, and the raw material of preparation polymer hollow fiber membrane includes solid polymer resin, phase separation aid, structure regulator and processing aid.The application carries out innovative design to film-forming formula and thermally induced phase separation extrusion spinning process, by full solid component compounding, combined with full water-soluble membrane structure adjustment, can be prepared to obtain polymer hollow fiber membrane with surface separation layer pore structure and internal double continuous pore structure, its pore size distribution is narrow, small molecule dissolution rate is low in use process, with excellent anti-burst pressure, anti-tensile fracture force, tensile elongation and separation performance, especially suitable for medical, food and other life health and diet health industry.

The application discloses a damping modifier, a noise-reducing damping ABS material and a preparation method thereof, and comprises the following components: 80-95 parts by weight of ABS, 5-20 parts by weight of a damping modifier and 0-3 parts by weight of a processing aid. The material has excellent mechanical properties, a high damping coefficient and excellent noise reduction effect.

The invention relates to the technical field of metallocene polyethylene materials, in particular to an FFS heavy packaging film and a preparation method thereof. The problems of balance contradiction between rigidity and impact resistance of a traditional product and narrow heat-sealing window are solved. A finished product is prepared from modified metallocene polyethylene, POE grafted zinc salt ionomer, core-shell structure toughening particles, linear low-density polyethylene, functional filler and a processing aid. Polarization and ionization modification of metallocene polyethylene and POE are achieved through reactive extrusion, and the puncture resistance of the material is improved through the physical cross-linking effect of ion clusters and the multi-stage toughening effect of core-shell particles; and meanwhile, by virtue of the cooperation of the thermal reversibility of the ionomer and a specific film blowing process, the initial temperature of heat sealing is reduced, and the sealing safety problem in a dust environment is solved.

The present invention discloses a recyclable high-strength antibacterial polyethylene bubble film and a preparation method thereof. The present invention uses ethylene-acrylic acid random copolymer as a compatibilizer, and is synergistically modified with inorganic fillers to prepare a high-strength high-density polyethylene outer protective film. The low-density polyethylene bubble film is synergistically modified by using metallocene low-density polyethylene and ethylene-α-olefin elastomer. All polyethylene-based materials are used, and the organic combination of different molecular chain structures is utilized to improve the comprehensive mechanical properties of the bubble film and facilitate recycling and reuse. The bubble film is functionally modified with a bio-based extract as an antibacterial agent and an antioxidant, and the antibacterial effect is lasting and effective. All processing aids used are non-toxic and harmless materials. The recyclable high-strength antibacterial bubble film prepared can be widely used in fields such as medicine and food packaging.

The utility model relates to the technical field of PVC (polyvinyl chloride) additive packaging, and discloses a packaging device for PVC processing additive production, which comprises a main body mechanism and a movable transmission mechanism, the movable transmission mechanism is positioned at the lower end of the main body mechanism, and the main body mechanism comprises an electric appliance storage box, a movable circular shaft, an access door and a door handle. The movable circular shaft is movably installed at the front end of the left end of the electric appliance storage box, the access door is movably installed at the right end of the movable circular shaft, the door handle is fixedly installed at the right end of the access door, the main body mechanism further comprises a packaging assembly and a controller, and the packaging assembly is fixedly installed at the upper end of the electric appliance storage box. The controller is fixedly installed at the right end of the electric appliance storage box, and the packaging assembly comprises a storage box, a box door, a handle groove and a packaging conveyor. According to the packaging device for production of the PVC processing agent, through the use of the packaging assembly, the PVC processing agent is packaged more easily and conveniently, the packaging effect of the PVC processing agent is better, and one-time forming packaging is firmer and more stable.

The invention relates to the field of technical schemes, in particular to a swelling agent for removing a cured addition type high-temperature vulcanized silica gel thin layer and a preparation method of the swelling agent. The solvent comprises the following raw materials in percentage by weight: 50-90% of a main solvent; 13-60% of an auxiliary solvent; 3-10% of a cosolvent; 0.1-1% of an active promoter; the balance is a processing aid; the activity promoting material is an active agent containing fatty alcohol polyoxyethylene ether; the main solvent is petroleum ether; the auxiliary solvent is composed of 120 # solvent oil and light paraffin oil; the cosolvent is an alcohol solvent; the sum of the weight percentages of the main solvent, the auxiliary solvent, the cosolvent, the activity accelerant and the processing aid is equal to 100%, and the obtained swelling agent has better stability and has a better removal effect when being used for removing a cured addition type high-temperature vulcanized silica gel thin layer.

The present disclosure generally relates to a formulation for producing a processing aid, such as a demolding agent or release agent, as used in particular in the production of rubber mixtures and other polymers as processing aids. More particularly, the present disclosure relates to a formulation for producing a processing aid which is produced in a more environmentally friendly manner than known processing aids, or at least can be produced in this manner, in particular using preferably at least 20% renewable raw materials. Furthermore, the present disclosure relates to a method for producing a processing aid and to the processing aid itself.