4718 results about "Calcium stearate" patented technology

This invention relates generally to the production and use of inorganic-conditioning agent complexes for the controlled release of compounds including medicinals. Advantageously, the inorganic used is calcium sulfate and the conditioning agent is calcium stearate.

Compounds and compositions comprising specific metal salts of bicyclo[2.2.1 ]heptane dicarboxylate salts in order to provide highly desirable properties within polyolefin articles are provided. The inventive salts and derivatives thereof are useful as nucleating and / or clarifying agents for such polyolefin, provide excellent crystallization temperatures, stiffness, and calcium stearate compatibility within target polyolefin. Also, such compounds exhibit very low hygroscopicity and therefore excellent shelf stability as powdered or granular formulations. Polyolefin additive compositions and methods of producing polyolefin with such compounds are also contemplated within this invention.

The invention discloses an antioxidant and ultravioresistant polypropylene woven bag raw material. The polypropylene woven bag raw material is added with anti-oxidant B215, anti-oxidant 1010, auxiliary anti-oxidant DLTP (dilauryl thiodipropionate) or DSTP (distearyl thiodipropionate), ultraviolet absorber UV531, light stabilizer GW-480, stearic acid, calcium stearate, calcium carbonate, mono-alkoxy titanate coupling agent YDH-101, and zinc stearate in powdered polypropylene, and then subjected to wiredrawing treatment in a drawing machine. Compared with the prior art, the raw material provided by the invention has advantages of good antioxidant and ultravioresistant properties, the raw material is particularly suitable for being used as woven bag raw materials, especially for being used as the raw material for manufacturing container bags.

The invention discloses a powdery calcium-zinc complex heat stabilizer, which comprises the following components in weight ratio: 20-30 parts of zinc stearate, 15-25 parts of calcium stearate, 4-8 parts of epoxy compound, 15-25 parts of beta-diketone, 2-6 parts of antioxidant, 10-15 parts of polyatomic alcohol, 12-16 parts of inorganic assistant and 10-15 parts of lubricant. The powdery calcium-zinc complex heat stabilizer disclosed by the invention is capable of effectively delaying the generation of zinc-burning phenomenon of a system and improving the initial-stage and long-term heat stability of polyvinyl chloride (PVC), and moreover, the system has a good lubrication component, thus, the dispersion property and the processing property of the system in resin can be improved, thereby being beneficial to reducing energy consumption.

The invention discloses a special material of polyvinyl chloride for electric isolated sleeve, comprising polyvinyl chloride, stabilizing agent, modifying agent for processing, shock resistance modifying agent, plasticizer, stearic acid, calcium stearate, polyethylene (PE) wax, pigment and 6000 mesh inorganic materials powder. The preparation method is as below: combine the measured 6000 mesh inorganic materials powder and the stearic acid first and then add shock resistance modifying agent to modify the inorganic materials powder. The combined material is granulated by an extruder for reservation. Then mix the measured material evenly by the high mixing machine to form the special powder material for polyvinyl chloride insulated sleeve or granulate the special powder material for polyvinyl chloride insulated sleeve by the extruder to form the special granule for polyvinyl chloride insulated sleeve which is later molded by the plastic extruding machine to form insulated electric sleeve with various specifications. The invention has the advantages of sound dispersion and compatibility, better product quality and lower cost.

The invention relates to a gypsum and calcium oxide melt inclusion expansion clinker, a concrete expansion agent, and a preparation method and application thereof, belonging to the field of construction materials. The expansion clinker provided by the invention is prepared by mixed grinding and high-temperature burning of limestone, gypsum and aluminum oxide and / or aluminum sulfate. The concrete expansion agent is prepared by grinding the expansion clinker together with a calcium sulphoaluminate cement clinker, calcium stearate or / and triethanolamine until the specific surface area is 140-400 m<2> / kg. According to the invention, the expansion clinker has high restrained expansion rate and high clinker weathering resistance; the concrete expansion agent has the functions of cracking resistance, seepage resistance, shrinkage compensation and the like, and has the advantage of long product shelf life (up to 6 months). The concrete expansion agent can be used for cracking resistance and seepage resistance of a common concrete structure, and can greatly enhance the durability of the concrete.

Compositions comprising specific disodium hexahydrophthalate(HHPA) salts in combination with acid scavengers (such as organic calcium salts or dihydrotalcite complexes) that provide highly desirable and effective nucleating properties within polymer articles (such as polyolefins) are provided. Surprisingly, such a combination of HHPA salt and acid scavenger provides high crystallization temperatures, low haze, and / or high flexural modulus to the finished polymer product. Other sodium salt polymer nucleators (such as sodium benzoate) deleteriously react with calcium organic salt acid scavengers such that characteristically high crystallization temperatures are drastically reduced when in combination with calcium salts (such as calcium stearate). Also, sodium benzoate when combined with dihydrotalcite acid scavengers produce extremely high haze levels in the finished target polymer article, whereas the inventive compositions surprisingly reduce haze. The finished polymer articles comprising such an inventive composition are also contemplated within this invention.

The invention discloses a thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and a preparation method thereof. The thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables comprises the following components in parts by weight: 60-80 parts of EVA (ethylene-vinyl acetate), 20-30 parts of HDPE (high-density polyethylene), 10-15 parts of EPDM (ethylene-propylene-diene monomer), 15-25 parts of compatiblizing agent, 100-150 parts of halogen-free flame retardant, 0.5-1 part of antioxidant 1035, 0.5-1 part of antioxidant DSTP, 1-2 parts of ethylene bis stearamide, 3-5 parts of DCP (dicumyl peroxide), 2-4 parts of zinc oxide, 1-2 parts of calcium stearate, 10-20 parts of dimethyl methyl phosphonate, 30-40 parts of nano kaolin, 2-3 parts of stearic acid and 0.5-1 part of isopropyl tri(dioctylpyrophosphate)titanate. The sheath material disclosed by the invention has the advantages of excellent physical and mechanical properties, excellent flame retardancy, favorable high / low temperature resistance, favorable oil resistance, favorable solvent resistance, favorable wear resistance, favorable ozone resistance, favorable aging resistance, high flexibility, crack resistance and the like, is very durable, environment-friendly and pollution-free, and can completely satisfy the requirements for modern power cables.

The invention relates to a ceiling sheet, in particular to an environmental-friendly lead-free PVC ceiling sheet and a manufacturing method and applications thereof. The environmental-friendly lead-free PVC ceiling sheet is obtained by blending the following components according to parts by weight and then extruding to mould: 50-100 parts of PVC resin SG-5, 15-50 parts of nano calcium carbonate, 3-10 parts of calcium zinc stabilizer, 1-3 parts of rutile titanium dioxide, 1-3 parts of CPE impact modifier, 1.5-5 parts of ACR enhancer, 0.2-0.8 part of stearic acid, 0.3-1.0 part of calcium stearate, and 0.2-0.4 part of PE wax. The PVC ceiling sheet is used as a novel environmental-friendly lead-free material of which the lead content is less than or equal to 200PPM, and is applicable to non-toxic places with high environmental requirements such as hospitals, operating rooms, baby rooms, food plants, and the like. The invention also discloses the manufacturing method of the ceiling sheet and ceiling gusset plates manufactured by the sheet.

The invention discloses a valve sealing gasket sizing material, which is prepared from the following raw materials in parts by weight: 20-30 parts of fluorosilicone rubber, 50-60 parts of hydrogenated nitrile-butadiene rubber, 15-25 parts of chlorosulfonated polyethylene rubber TS-320 (TOSOH, Japan), 2-3 parts of gamma-methacryloxypropyltrimethoxysilane, 1-2 parts of diphenyl silandiol, 14-16 parts of modified tree ash, 2-3 parts of ferrocene, 0.2-0.6 part of dicumyl peroxide (DCP), 20-30 parts of high-abrasion resistant carbon black N330, 20-25 parts of precipitated white carbon black, 5-7 parts of light calcium carbonate, 2-4 parts of zinc oxide, 1-3 parts of calcium stearate, 1-3 parts of aluminium oxide, 5-8 parts of dolomite, 13-15 parts of modified iron tailing powder, 0.1-0.3 part of accelerating agent MBTS, 1-2 parts of sulphur, 1-2 parts of anti-aging agent RD, 1-2 parts of anti-aging agent MB, 1-2 parts of benzimidazole-2-thiol, 1-3 parts of methyltrimethoxy silane, and 2-3 parts of paraffin. The sizing material of the rubber has excellent high and low temperature-resistant, oil-proof, solvent-resistant and chemical-resistant performance, and at the same time is good in mechanical property and low in cost.

The invention discloses a novel environment-friendly type PVC heat stabilizer comprising 1,3-dimethyl-6-Aminouracil as a main stabilizing agent. The novel environment-friendly type PVC heat stabilizer comprises the following ingredients: 1-5weight parts of 1,3-dimethyl-6-Aminouracil, 10-100 weight parts of epoxy soybean oil, 3-10 weight parts of calcium stearate, 3-10 weight parts of zine stearate, and 2-15 weight parts of organic auxiliary agent. According to the invention, the heat stabilizer disclosed herein significantly raises the stability of PVC materials in the processing process; and compared with traditional stabilizing agents, the heat stabilizer disclosed herein contains no heavy metal, and is an environment-friendly efficient novel heat stabilizer.

The invention discloses high-strength core-preparing precoated sand comprising the following components by weight percent: 4.8%-14.7% of iron sand, 1.65%-1.76% of mixed resin, 0.18%-0.24% of methenamine, 0.07%-0.11% of calcium stearate, 0.34%-0.54% of water and the balance of silica sand. The preparation process comprises the following steps of: adding basic roughing sand to a sand mixing machine after the basic roughing sand is heated to be 125-135 DEG C; adding the mixed resin accounting for 1.7%-1.8% of the weight of the basic roughing sand to the sand mixing machine for mixing and grinding; when the sand temperature in the sand mixing machine is reduced to be 102-108 DEG C, adding a methenamine solution for continuously mixing and grinding; and when the sand temperature in the sand mixing machine is reduced to be 70-75 DEG C, adding the calcium stearate, and screening and cooling after mixing and grinding so as to obtain finished sand. With the adoption of the preparation process, formation of N2 is effectively controlled, restraint to defects of subcutaneous blowholes is up to more than 96%, the barrier in the prior art is broken through, and the formation of nitrogen holes is truly prevented.

The invention discloses an anti-folding stress whitening resistant polypropylene (PP) material and a preparation method thereof. The material is prepared from the following raw materials in part by weight: 55 to 75 parts of co-polypropylene, 5 to 20 parts of POE Lc670, 10 to 30 parts of stress whitening resistant master batch, 0.05 to 0.15 part of white mineral oil, 0.1 to 0.3 part of hindered phenol antioxidant 1010, 0.1 to 0.3 part of phosphite ester antioxidant 1680 and 0.1 to 0.3 part of calcium stearate. The stress whitening resistant master batch comprises the following components in part by weight: 40 to 65 parts of EPDM or EPR or POE, 30 to 50 parts of nano active light CaCO3, and 0.5 to 2 parts of sodium polyethylene with low molecular weight. The polypropylene (PP) material is prepared by using a double-screw extruder with 9 temperature control areas according to the specific process conditions. The material has the advantages of good repeated bending resistance and stress whitening resistance, simple preparation process and low preparation cost.

The invention relates to a manufacturing method of sintering permanent magnetism ferrite by dry-pressing molding. The method comprises following working procedures: crushing process, the preparation process of dry pressing the magnetic powder, dry pressing process and sinter process. The organic dispersant added in the crushing process is one or a plurality among polyethylene glycol, calcium stearate and calcium gluconate, and the content of the organic dispersant is 0.1wtpercent-1.5wtpercent; the bond added in the he preparation process of dry pressing the magnetic powder is one or a plurality among PVA, polyethylene glycol, camphor and stearate, and the content of the bond is 0.1wtpercent-1.5wtpercent. 1. The manufacturing method of sintering permanent magnetism ferrite by dry-pressing molding of the invention has the advantages of that the productivity effect is high, the molding mould is simple and the automation molding is easy to be realized; the surface of the molded finished product is lubricous and even, the fettling is not needed, and the workload of the post processing is decreased greatly; 2. The manufacturing method of sintering permanent magnetism ferrite by dry-pressing molding of the invention adopts the unique preparation technique of dry pressing the magnetic powder, and the orientation in the process of magnetic field press is relatively good, and the high Br and high HCJ dry-pressing sintering permanent magnetism ferrite is easy to be gained; 3. The manufacturing method of sintering permanent magnetism ferrite by dry-pressing molding of the invention adopts the pre-sintering material with a better performance of ion substitutional main prescription, and a dry-pressing anisotropic sintering permanent magnetism ferrite with a better magnetism performance can be achieved.

The invention discloses high-pressure self-packing leather cup rubber for a packer. The high-pressure self-packing leather cup rubber is prepared from the following raw materials in parts by weight: 30-40 parts of nitrile rubber, 20-30 parts of isoprene rubber, 20-40 parts of ethylene propylene terpolymer 5962 (LANXESS Deutschland), 10-15 parts of fluorosilicone rubber, 3-5 parts of natural rubber, 30-40 parts of high abrasion furnace black N330, 10-15 parts of modified white carbon black, 3-4 parts of antimony trioxide, 8-10 parts of modified wood ash, 4-6 parts of attapulgite, 4-6 parts of meerschaum, 9-11 parts of modified iron tailing slag powder, 0.5-1 part of stearic acid, 0.5-1 part of isocyanate, 0.2-0.4 part of accelerant DM, 0.3-0.6 part of accelerant BZ, 1-2 parts of calcium stearate, 2-4 parts of zinc oxide, 0.2-0.4 part of ferrocene, 1-2 parts of polyethylene wax, 1-2 parts of antioxidant DSTP, 1-2 parts of anti-aging agent, 2-3 parts of coupling agent DL-151 and 16-18 parts of epoxy linseed oil. The rubber disclosed by the invention has excellent ozone resistance, excellent low temperature resistance and heat resistance and is large in operating temperature range and environment-friendly in process, so that the rubber can be used for preparing various packing materials.

The invention discloses a thermoplastic elastomer composition which is plasticated by the following main components by weight: 100 parts of polyurethane thermoplastic elastomers, 30-150 parts of polyvinyl chloride thermoplastic elastomers, 25-50 parts of styrene elastomers, 0-30 parts of blend and 4-8 parts of auxiliaries, wherein the auxiliary is any one or more of a composite rare-earth stabilizer, zinc stearate, calcium stearate, stearic acid or polyethylene wax; and the blend is butyronitrile N18. The invention selects the thermoplastic elastomers with similar polarity and complementary properties to be synthesized and used and selects compatilizers to organically combine several best molecules with different structures, so that the generated novel thermoplastic elastomer has superior performance and appropriate price, can meet the requirements of market products and has wide application range because the product has the technical advantages of excellent oil resistance, resistance to low temperature of minus 35 DEG C, acid-alkali resistance, aging resistance and lower proportion than the vulcanized products with the same price.

The invention relates to a wood plastic composite, in particular to a high-intensity wood plastic composite board and a fabrication method thereof. The method for fabricating the high-intensity wood plastic composite board comprises the following steps: treating nano titanium dioxide with silane coupling agent to obtain modified nano titanium dioxide; mechanically stirring the modified nano titanium dioxide, plastic particles, maleic anhydride grafted plastic particles, calcium stearate and the like, and extruding and pelleting all the materials to obtain modified plastic particles; mechanically stirring the modified plastic particles, wood flour, terpene resin, chopped glass fiber, white oil, antioxidant and the like, and extruding, melt-blending and pelleting all the materials to obtain high-intensity wood plastic composite particles; and finally extruding the high-intensity wood plastic composite particles with a machine to mold the high-intensity wood plastic composite board. The high-intensity wood plastic composite board has extremely wide application range, and is applied to the fields such as transportation, construction, decoration, ornament, municipal works, garden and park, packaging and the like. The high-intensity wood plastic composite board has the advantages of reproducibility, low cost and higher mechanical properties such as static bending strength and the like, thereby being an ideal material for replacing wood. Compared with traditional wood plastic composites, the high-intensity wood plastic composite board has longer service life, and is a novel upgrade product of the present wood plastic composites.

The invention discloses a Zn-Ca compound stabilizer, comprising the following components in parts by weight: 28-35 parts of zinc stearate, 8-11 parts of calcium stearate, 18-32 parts of hydrotalcite, 14-22 parts of polyalcohol, 4.5-10.5 parts of Stearoylbenzoylmethane, 3.6-12 parts of external lubricant, 3.8-9.8 parts of internal lubricant and 1.0-5 parts of antioxidant. Compared with the prior art, the invention has the following characteristics of long continuous production period and good production stability; realization of toxicity and environmental protection without containing heavy metals, such as Ba, Cd, Pb and the like in the components; and avoidance of discoloration at the time of switching mercaptan organic tin without containing heavy metals, such as Ba, Cd, Pb and the like.

The invention discloses a production technology of a precoated sand for a selective laser sintering and quick molding technology. The formula of the precoated sand comprises the following components: crude sands, a binding agent, a curing agent, a lubricant, and an addictive; wherein the crude sands are selected from a foundry sand with a particle size of 100 to 200 meshes, the binding agent is selected from a PF-1904 thermoplastic solid phenolic resin whose melting point is from 80 to 90 DEG C, the curing agent is selected from white or colorless crystal urotropine powder, the lubricant is selected from white calcium stearate powder, and the addictive is selected from silane colorless transparent liquid coupling agent KH-550. The production technology of the precoated sand for the selective laser sintering and quick molding technology adopts a fine and round foundry sand, selects a resin with a low melting point, reduces the addition amount of the resin, strictly controls the temperature when the binding agent and the curing agent are added, and adds a proper amount of addictive so as to manufacture a high strength and low gas evolution precoated sand, which is suitable for the selective laser sintering and quick molding technology.

A rubber composition for a tire comprising a rubber component containing at least one of a natural rubber and an epoxidized natural rubber, not less than 15 parts by mass of silica based on 100 parts by mass of the rubber component, and not less than 0.5 part by mass of calcium stearate based on 100 parts by mass of the rubber component, a tire member made using the rubber composition for a tire, and a tire made using the tire member.

The invention discloses a capacitor thin film containing modified nano-titanium dioxide and a preparation method thereof. The capacitor thin film comprises the following raw materials in parts by weight: 57-65 of metallocene polypropylene resin, 25-30 of LLDPE (Linear low density polyethylene) resin, 10-15 of low-density polyethylene, 10-15 of homo-polypropylene, 3-5 of epoxy linseed oil, 2-3 of polyvinyl alcohol, 1-2 of aluminum hydroxide, 1-2 of polyisobutylene, 8-12 of diatomite, 1-2 of ferrocene, 0.5-1.5 of poly-4-methyl-1-amylene, 7-9 of modified nano-titanium dioxide, 1.5-2.5 of cross-linking agent TAC, 0.2-0.4 of expoxy butyl oleate, 0.8-1.2 of epoxidation triglyceride, 3-5 of calcium stearate and 0.5-0.7 of modified trees ash. The preparation method disclosed by the invention is simple; and simultaneously, the diatomite, the modified nano-titanium dioxide and the modified trees ash are added to the raw materials so that the barrier property and air tightness of the thin film are improved, and the thin film has good resistance to pressure and impact resistance and simultaneously has the characteristics of high heat-seal strength and good heat sealing property.

The invention discloses an ASA / PVC co-extrusion ultra-weather resisting colorful rainwater pipeline special for outdoor rainwater drainage. The traditional VPC rainwater pipelines are white, and are hard to be harmonized with the appearance of a building or be applied to western high altitude areas. The pipeline consists of an internal layer and an external layer, and is characterized in that the external layer is made of an ASA modified material, and comprises the following compositions: acrylonitrile, styrene, acrylic rubber terpolymer, complex pigment, chlorinated polyethylene, stearic acid, calcium stearate, nanometer calcium carbonate, compounded lubricant, titanium pigment, UV absorbent and antioxidizer; the internal layer is prepared by the following compositions: polyvinyl chloride, chlorinated polyethylene, calcium stearate, titanium pigment, organic stabilizer and PE wax. The external layer made of the ASA material has ultra-weather resistance and multiple colors to meet the requirement on the colorful pipeline in the market currently; and the internal layer greatly improves the toughness of the pipeline.

The invention discloses a three-layer noise reduction drainage pipe, which comprises a drainage pipe body, wherein the drainage pipe body is a three-layer co-extrusion composite pipe formed by an impact-resistance outer layer, a noise reduction middle layer and an impact-resistance inner layer through co-extrusion. The noise reduction middle layer is a sound-absorbing middle layer or a sound insulation middle layer made of expandable polyvinyl chloride composition materials. The above layers are prepared with the following materials. The impact-resistance outer layer is made of polyvinyl chloride resin, chlorinated polyethylene, dibasic lead phosphite, tribasic lead sulfate, calcium stearate, lead stearate, paraffin, PVC processing and modifying agent, active light calcium carbonate, titanium dioxide and dioctyl phthalate. The sound-absorbing middle layer is made of polyvinyl chloride resin, chlorinated polyethylene, lead salt stabilizer, calcium stearate, stearic acid, paraffin, dioctyl phthalate, active light calcium carbonate and barium sulfate. The sound insulation middle layer is made of polyvinyl chloride resin, methacrylic ester polymer and inorganic foaming agent. Compared with the outer layer, the impact-resistance inner layer comprises the same components with the outer layer, except that PVC is adopted instead of polyvinyl chloride resin. The noise of the drainage pipe can be effectively reduced and the intensity of the drainage pipe is enhanced.

The invention discloses PET (polyethylene glycol terephthalate) fiber / teflon fiber composite sound absorbing cotton, which is prepared from the following ingredients in parts by weight: 70 to 80 parts of PET fibers, 40 to 50 parts of teflon fibers, 10 to 15 parts of emulsifying agents OP-30, 5 to 10 parts of peregal O-20, 80 to 100 parts of PP (propene polymer), 30 to 40 parts of HIPS (high impact polystyrene), 15 to 20 parts of activated clay, 10 to 15 parts of modified kieselguhr, 2 to 3 parts of stearic acid, 5 to 8 parts of dioctyl adipate, 4 to 6 parts of cresyl diphenyl phosphate, 2 to 3 parts of liquid paraffin, 1 to 2 parts of 3-aminopropyltrimethoxysilane, 2 to 3 parts of calcium stearate, 1 to 2 parts of barium stearate, 0.5 to 1.5 parts of anti-aging agents RD and 1 to 2 parts of antioxidants DLTP (dilauryl thiodipropionate). The sound absorbing cotton prepared by the invention has the advantages that the appearance evenness is good, the thickness is uniform, the hand feeling is soft, the product bonding degree is good, the tensile performance is high, the sound absorbing performance is excellent, the flame retardant effect is good, and the like.

The invention relates to a composite heat stabilizer for hydrophobic nano-hydrotalcite PVC, comprising the following raw materials according to the mass percent: 30-50 of calcium stearate, 10-20 of zinc stearate, 10-30 of hydrophobic nano-hydrotalcite, 5-15 of lubricant, 4-7 of surface modifier and 5-15 of auxiliary heat stabilizer. With the method of coprecipitation, the hydrophobic nano-hydrotalcite is added with eunatrol to prepare hydrophobic nano-hydrotalcite including Mg and Al with the mol ratio of 2-3:1. The nano-hydrotalcite prepared by the invention has good hydrophobic nature. Good compatibility with a PVC basal body can be achieved if the nano-hydrotalcite is used in a composite heat stabilizer for PVC. Advantages of difficult precipitation and good stabilizing effect can be achieved when the nano-hydrotalcite is used as a stabilizer for plastic processing of PVC, and the like. The addition of the hydrophobic nano-hydrotalcite can reduce the balance torque, improve the processing property and reduce the cost. The preparation method causes no pollution and has low energy consumption.

The invention relates to a medical multifunctional polyvinyl chloride composite material which consists of polyvinyl chloride (PVC) resin powder, a nano modified material, a plasticizer, a stabilizer and a lubricant. In the formula, every 100 portions of PVC resin powder is added with 0.5 portion to 3 portions of nano modified material, 20 portions to 40 portions of phthalic acid ester, 10 portions to 30 portions of trimellitate, 10 portions to 30 portions of citrate, 5 portions to 10 portions of epoxidized soybean oil (ESO), 0.5 portion to 1 portion of calcium stearate (CaSt), 0.5 portion to 1 portion of zinc stearate (ZnSt) and 0.1 portion to 0.5 portion of silicon oil according to portions by weight. The nano modified material is nano silver-supported zinc oxide or nano silver-supported titanium dioxide and has the main effects of having anti-bacterial function and being capable of improving the physical properties of resins. The composite material has reasonable formula, stable performance, simple technology, nano antibacterial function and low dissolution performance of the plasticizer, and can be used for producing various medical apparatuses.

The invention discloses a high weather-proof, multiple-effect, environmentally-friendly PVC composite heat stabilizer which is composed of the following raw materials in percentage by weight: 20-40% of calcium stearate, 15-25% of zinc stearate, 10-30% of hydrophobicity nano-hydrotalcite, 1-1.5% of hyperdispersant, 5-15% of lubricating agent, 4-7% of surface modifier and 5-15% of assistant heat stabilizer, wherein, hydrophobicity nano-hydrotalcite is prepared with a coprecipitation method by adding sodium oleate, and the molar ratio of Mg to AL in hydrophobicity nano-hydrotalcite is 2-3:1; the hyperdispersant is copolymer of maleic anhydride-sodium allyl sulfonate-crylic acid polyethylene glycol monoester. The nano-hydrotalcite prepared by the invention has better hydrophobic property and favorable compatibility with PVC matrix. Hydrophobicity nano-hydrotalcite and hyperdispersant are added to lower balancing torque, improve handling characteristics and weather resistance and lower cost. The preparation method of the invention has no pollution and low energy consumption.

This invention relates to antistatic biaxially oriented polypropylene (BOPP) combination, using polypropylene as material and including opening agent, smoothness agent, antistatic agent, antioxidant, processing and heat stabilizer, wherein the antistatic agent is glycerin fatty acid ester or two ester, polyethylene glycol ester, amides and / or ethyl amines, the anti-adhesion agent is a series of silicon dioxide inorganic matters or crosslinked polysiloxane particles, the opening agent is the synthesized silicon dioxide or silicates, calcium stearate, the smoothness agent is oleic acid amide, erucic acid amide and / or silicone, and the primary and secondary antioxidants are phosphite stabilizing agent and hindered amine antioxidant. The preparation method includes adding antistatic agent, etc. additives in granulation part, and adding them into PP, mixing, and melting and granulating to obtain the BOPP antistatic resin, or pre-preparing antistatic anti-adhesion smoothness masterbatch by various components. This invention keeps the original performances of BOPP with a lower volume of auxiliaries, and obtain good performances of antistatic property, anti-adhesion, and smoothness.

The invention provides a water resistible and breathable plastic film with a drying function. The plastic film is prepared from the following raw materials in parts by weight: 40-80 parts of macromolecule plastic, 20-60 parts of an adsorbent and 1-5 parts of an auxiliary material, wherein the macromolecule plastic is at least one of polyethylene, polypropylene, thermoplastic elastomer and the like; the adsorbent is selected at least one of silica gel, montmorillonite, bentonite, molecular sieve, calcium carbonate, titanium dioxide and the like; the auxiliary material is selected from at least one of macromolecule wax, modified polyphthalamide, calcium stearate and the like. The plastic film adopts a plastic film (bidirectional or unidirectional) tension technique, and the adsorbent with the drying function is added into the raw material formula for manufacturing a water resistible and breathable film, so that a material has a certain moisture absorption function under the condition that the air permeability of the material is not affected.