32results about How to "No reduction in physical properties" patented technology

The invention relates to a waterproof and moisture-permeable coating agent composition, wherein, a certain amount of microporous lignocellulose fine powder is added into the coating agent with waterproof function, so that the coating agent has moisture permeable performance. The waterproof and moisture-permeable coating agent composition which is used as the coating agent for non-woven fabric, knitted fabric or woven fabric can be made into coated fabric and synthetic leather with waterproof and moisture permeable performances. Compared with the prior at, the invention has the advantages that: 1. the raw material is easy to be added, the process is available with high adaptability, no need to add new equipment; 2. on the premise that the waterproof performance is not decreased, the amount of moisture permeated is increased obviously and the anti-adhesion is improved; 3. the coated fabric and superfine fiber and artificial cover synthetic leather made by the invention has the advantages of fine moisture permeability, high resistance to water pressure and that the physical performance does not decrease.

The invention discloses a room-temperature moisture-curable single-component flame-retardant polyurethane sealant and a preparation method thereof. The sealant is prepared from the following raw materials in parts by weight: 30-55 parts of liquid polyether type polyurethane pre-polymer base stock, 10-30 parts of flame-retardant plasticizer, 0.1-1 part of silane coupling agent, 15-30 parts of flame-retardant powder, 10-30 parts of filler, 0.01-0.05 part of catalyst and 0.2-3 parts of methyl benzenesulfonyl isocyanate, wherein the liquid polyether type polyurethane pre-polymer base stock is prepared from the following raw materials in parts by weight: 32.8-57.64 parts of common polyether glycol, 28.82-54.67 parts of flame-retardant polyether glycol, 12.51-13.53 parts of polyisocyanates, and 0.01 part of catalyst. The room-temperature moisture-curable single-component flame-retardant polyurethane sealant is excellent in physical performance, thixotropic property and flame-retardant performance, and convenient for construction.

The invention relates to an enhanced conductive nylon material and a preparation method thereof. The enhanced conductive nylon material comprises the following raw materials in percentage by weight: 40 to 70 percent of nylon, 10 to 40 percent of glass fibers, 10 to 40 percent of metal powder, 0.1 to 5 percent of coupling agent, 0.1 to 0.5 percent of antioxidant and 0.5 to 5 percent of silicone oil. The invention provides a method for thermoplastic conductive plastics by attaching the metal powder to the glass fibers twice and mixing the glass fibers, the metal powder and plastics for pelleting by utilizing the characteristics of easy machining and dispersion of the glass fibers in the plastics, and the prepared thermoplastic conductive plastics have the characteristics of simple and convenient production process, uniform dispersion of the metal powder, small addition amount, controlled conductivity and smooth surfaces of products.

A flame resistant synthetic resin composition is characterized in that 1-40 parts by mass of at least one of organophosphorus compounds represented by the following general formula (1): (wherein R<1> represents an alkyl group, an aralkyl group or the like) is blended per 100 parts by mass of a synthetic resin.

The invention relates to the field of medical instruments, in particular to a biodegradable polymer support storing method. The method includes packaging the biodegradable polymer support and one or both of deoxidizer and desiccant in a sealed manner through an airtight package bag, then performing radiation sterilization, and accordingly improving stability of the biodegradable polymer support is improved.

The invention discloses a motor car of a 100% low-floor tramcar and an assembly method of the motor car. The motor car comprises a few of large components, such as a top rack, a side wall, a bottom rack, an end wall, an upper hinge component and a cab, wherein the components adopt a riveting mode instead of a traditional welding mode. A car body component adopts a modular design, the components are riveted, each component has good production independence, maintenance universality and interchangeability, and each component can synchronously develop production. Riveting is free of a heat effect, or even coating can be carried out before general assembly, so that the production efficiency is greatly improved, other components of the car body adopt an aluminum profile welding structure except for that the components with large stress adopt a steel structure, the total weight of the car body is greatly relieved in comparison with an all-steel structure, and the lightweight purpose is achieved.

The invention provides a method for preparing high-resilience flame-retardant polymer polyol. The flame-retardant polymer polyol product is obtained by preparation processes of selecting and matching of a flame retardant and polymerization reaction. The polymer polyol prepared by the method provided by the invention is low in cost and viscosity, a product prepared from the polymer polyol has a flame resistance, low smoke emission, no generation of toxic gases during burning and no reduction in the physical properties of the product. The method is suitable for preparing high-resilience flame-retardant polymer polyol.

The invention discloses a thermoplastic polyester elastomer composition. The thermoplastic polyester elastomer composition consists of a polyester rigid segment section, a soft segment section derived by polycaprolactone dibasic alcohol, 0.1-1.5wt% of nucleating agent and 0.1-2wt% of antioxidant, wherein the rigid segment section consists of repetitive units derived by at least one alkylene glycol and at least one aromatic dicarboxylic acid; the weight ratio of the rigid segment section to the soft segment section is 60:(40-90):10; the nucleating agent is talcum powder with the particle size of 0.01-20 microns. The invention also discloses a secondary spring of the thermoplastic polyester elastomer composition used for manufacturing transport cars. According to the secondary spring, strict requirements of high dynamic load, low compression set, durability and comfort level on the transport cars are met, and the processing cost of the secondary spring is effectively reduced. The thermoplastic polyester elastomer composition is mainly used as a high-strength damping element for bearing dynamic fatigue, such as buffering and damping elements and bridge damping blocks in transportation means such as cars.

It is an object of the invention to provide a method for producing an optical element having a multi-layered antireflection film formed on a synthetic resin substrate, in which the antireflection film formed has good heat resistance, and its heat resistance lowers little with time. The method makes it possible to form high-refraction layers within a shorter period of time, not detracting from the good physical properties intrinsic to the layers. At least one high-refraction layer of the multi-layered anti-reflection film contains niobium oxide, zirconium oxide, yttrium oxide, and optionally aluminum oxide.

The invention discloses a halogen-free nano composite flame retardant and a preparation method thereof. According to the method, the halogen-free nano composite flame retardant is prepared by coating magnesium hydroxide, zinc hydroxystannate and polyphosphazene layer by layer. Through compounding of magnesium hydroxide and zinc hydroxystannate, the flame retardation effect of the material is improved. Through synergism of polyphosphazene, a compact isolation protection layer is generated on the surface of the material, contact between combustibles and flames is isolated, carbon dioxide, ammonia gas and other nonflammable gases are released, and the oxygen content is reduced. The composite flame retardant nano structure with a large specific surface area improves the carbon residue amount during material combustion, a compact carbon layer plays a barrier role, and the compound halogen-free nano flame retardant can greatly improve the flame retardant property of the material.

The invention relates to the technical field of a cleaning agent and specifically provides a cleaning agent for an aluminum fin and a cleaning method. The invention aims to promote the smoothness of an aluminum section bar. In order to achieve the aim, the cleaning agent provided by the invention comprises the following raw materials in parts by weight: 18-28 parts of a corrosion inhibitor, 15-45 parts of inorganic salt, 5-15 parts of an accelerant, 5-12 parts of a slime release agent, 1-5 parts of a brightener and 30-60 parts of water. According to the cleaning method for the aluminum fin, provided by the invention, the cleaning agent is adopted for cleaning the aluminum fin; the cleaning agent is diluted, sprayed and brushed onto the surface of the aluminum fin so as to achieve the cleaning aim or the aluminum fin is soaked in the diluted cleaning agent so as to achieve the cleaning aim; the brightener is adopted for forming a protecting film on the surface of the aluminum fin, so that the surface of the de-scaled aluminum fin is clean and bright, and the physical performance and secondary processing performance of the aluminum fin are not reduced; and under the dual functions of the corrosion inhibitor and the slime release agent, the corrosion resistance of the aluminum fin is promoted, the cleaning time is shortened, and the cleaning is completed within 3min-5min.

As to the conductive roll 10 equipped with a core bar 2 and an conductive elastic layer 1 on the surface side of the core bar 2, electrostatic capacity at 100Hz is set to <=50pF, and electric resistance at the applied voltage 1000V is set to >=10<5>[Omega] and <=10<9>[Omega]. Electrostatic capacity C(L) at the low frequency Hz(L) of AC and electrostatic capacity C(H) at the high frequency Hz(H) of AC are set to relation 0<(C(L)-C(H)) / (log10Hz(H)-log10Hz(L))<10. The conductive roll has excellent electric characteristic and capable of surely restraining toner scattering.

The invention discloses a motor car of a 100% low-floor tramcar and an assembly method of the motor car. The motor car comprises a few of large components, such as a top rack, a side wall, a bottom rack, an end wall, an upper hinge component and a cab, wherein the components adopt a riveting mode instead of a traditional welding mode. A car body component adopts a modular design, the components are riveted, each component has good production independence, maintenance universality and interchangeability, and each component can synchronously develop production. Riveting is free of a heat effect, or even coating can be carried out before general assembly, so that the production efficiency is greatly improved, other components of the car body adopt an aluminum profile welding structure except for that the components with large stress adopt a steel structure, the total weight of the car body is greatly relieved in comparison with an all-steel structure, and the lightweight purpose is achieved.

The invention relates to a brightening agent, especially to a plastic brightening agent. The plastic brightening agent comprises, by mass, 10 to 20 parts of waterborne polyurethane, 40 to 60 parts of paraffin, 30 to 50 parts of N,N'-ethylidenebisoleamide, 20 to 40 parts of N,N'-ethylenebisoleamide, 5 to 10 parts of polyoxyethylene amide, 12 to 18 parts of a cosolvent and 150 to 180 parts of a solvent. The plastic brightening agent provided by the invention has a high molecular weight and a melting point of 200 DEG C; and the plastic brightening agent can form a film on the surface of a plastic product so as to improve the brightness and smoothness of the surface of the plastic product. Compared with conventional plastic brightening agents, the plastic brightening agent provided by the invention has the following advantages: 1, brightening efficiency is high and long-lasting, and the plastic brightening agent cannot be easily wiped and forms the film on the surface of the plastic product; 2, the plastic product is not reduced in its physical properties and secondary processability; 3, the plastic brightening agent has excellent thermal and chemical stability and is not decomposed and not volatile during processing; 4, the plastic brightening agent does not corrode equipment or contaminate products; and 5, the plastic brightening agent is nontoxic.

The invention discloses a thermoplastic polyester elastomer composition. The thermoplastic polyester elastomer composition comprises a polyester-polyester block copolymer and an auxiliary agent. The polyester-polyester block copolymer comprises a hard chain segment and a soft chain segment. The hard chain segment comprises repeating units derived from at least one alkylene glycol and at least onearomatic dicarboxylic acid. The soft chain segment is derived from polycaprolactone diol. The invention discloses a method for preparing an auxiliary spring for a transporting vehicle from the polyester elastomer composition. Through improvement of the composition of the thermoplastic polyester elastomer, the physical properties of the thermoplastic polyester elastomer in high and low temperatureenvironments are improved. The auxiliary spring prepared from the thermoplastic polyester elastomer can well meet the harsh requirements on high dynamic load, low compression permanent deformation, durability and comfort of a transporting vehicle.

The invention discloses a low-VOC and high-solid-content water-based paint based on acrylic resin and a preparation method thereof, and the water-based paint prepared by adopting the formula provided by the invention still keeps excellent properties in the aspects of adhesive force, acid and alkali resistance and the like on the premise of reducing viscosity, increasing solid content and having relatively low VOC.

Polyurethane sealant for construction, including: polyurethane prepolymer, phosphonate flame retardant plasticizer, flame retardant synergist, plasticizer, thixotropic agent, filler, light stabilizer, antioxidant, catalyst A, silane Adhesion promoter, moisture scavenger. The present invention achieves flame retardancy on the skeleton structure of the sealant, and achieves good flame retardancy without reducing the physical properties, thixotropic properties, and constructability of the product.

The invention discloses a processing method of a glass bottle for cosmetics, and belongs to the technical field of glass bottle processing. The method comprises the following steps: material preparing: crushing quartz sand and cullet; cleaning: cleaning the cullet with a cleaning solution, then washing with water to remove the cleaning solution attached to the cullet, and then drying the cullet toobtain purified cullet; material mixing: weighing quartz sand, the cullet, limestone, borax and soda ash according to a ratio, and uniformly mixing to obtain a pre-mixture; melting: preparing the pre-mixture into a molten state, uniformly stirring, adding a glass defoamer, and uniformly stirring to obtain molten glass; mold passing: transferring the molten glass into a forming mold to prepare a glass bottle blank; bottle blowing: carrying out bottle blowing on the glass bottle blank to obtain a preformed glass bottle; and molding: cooling the preformed glass bottle to obtain the glass bottlefor cosmetics. According to the invention, the glass bottle has the advantage of environmental protection, and the prepared glass bottle has good mechanical shock resistance.

The invention relates to a waterproof and moisture-permeable coating agent composition, wherein, a certain amount of microporous lignocellulose fine powder is added into the coating agent with waterproof function, so that the coating agent has moisture permeable performance. The waterproof and moisture-permeable coating agent composition which is used as the coating agent for non-woven fabric, knitted fabric or woven fabric can be made into coated fabric and synthetic leather with waterproof and moisture permeable performances. Compared with the prior at, the invention has the advantages that: 1. the raw material is easy to be added, the process is available with high adaptability, no need to add new equipment; 2. on the premise that the waterproof performance is not decreased, the amountof moisture permeated is increased obviously and the anti-adhesion is improved; 3. the coated fabric and superfine fiber and artificial cover synthetic leather made by the invention has the advantages of fine moisture permeability, high resistance to water pressure and that the physical performance does not decrease.

A process for producing a polyimide which comprises subjecting a diamine and a tetracarboxylic dianhydride to imidization in a solvent comprising 50 to 100 wt.% composition consisting of a nitrogenous cyclic compound represented by the following chemical formula (1) and a phenol represented by the following chemical formula (2) in an equimolar proportion. (In the formula (1), X represents -CH2- or -N(CH3)-. In the formula (2), R1 and R2 may be same or different and each represents -H, -OH, -CH3, -C2H7, -C3H7, -C2H9, -C5H11, -C6H13, -C7H15, -C8H17, -C9H19, -C10H21, -OCH3, -O(C6H5), -NO2, -Cl, -Br, or -F.).

The invention relates to a BOPP film with low carbon dioxide emission and a preparation method thereof. The BOPP film comprises an upper surface layer, a core layer and a lower surface layer which are sequentially arranged, and the upper surface layer and the lower surface layer comprise the following components in parts by weight: 91-98 parts of homo-polypropylene, 1-5 parts of an anti-blocking agent and 1-4 parts of a carbon dioxide reducing agent master batch; the core layer comprises the following components in parts by weight: 90-98 parts of homo-polypropylene, 0.5-3 parts of an antistatic agent, 0.5-3 parts of a slip agent and 1-4 parts of a carbon dioxide reducing agent master batch; the carbon dioxide reducing agent in the carbon dioxide reducing agent master batch is a nano-scale carbonization catalyst liposome, and the nano-scale carbonization catalyst liposome is a spherical carrier preparation formed by encapsulating a carbonization catalyst in a single-layer phospholipid capsule. According to the BOPP film, on the basis that the original physical performance is not reduced and the good appearance is kept, carbon dioxide emission can be reduced when the BOPP film is used for waste incineration in subsequent treatment, and the preparation method does not need special production equipment and is easy to operate and low in cost.

The invention discloses a water-retention treating agent for latex fiber boards, a preparation process of the water-retention treating agent and a water-retention method. The water-retention treating agent for latex fiber boards is characterized by comprising, by the total mass fraction of 100%, 0.35-0.70% of a moisture absorbent, 0.30-0.60% of a deliquescing agent, 0.35-0.70% of an adhesive and 98.0-99.0% of water. The water-retention treating agent for latex fiber boards can permeate latex fiber boards effectively under high temperature conditions and under the action of pressure, so that moisture of latex fiber boards can be increased, and even if the environment humidity changes, the balanced moisture of latex fiber boards can also be in the normal state and is not changed obviously with environments. By the aid of the water-retention treating agent for latex fiber boards, 10.0% of the long fiber usage amount can be reduced, simultaneously, physical properties of materials are not reduced, and overall indicators of products can meet product quality requirements and can meet machining performance requirements and usage performance requirements of products, so that costs are reduced, and benefit can be increased.

The invention relates to an enhanced conductive nylon material and a preparation method thereof. The enhanced conductive nylon material comprises the following raw materials in percentage by weight: 40 to 70 percent of nylon, 10 to 40 percent of glass fibers, 10 to 40 percent of metal powder, 0.1 to 5 percent of coupling agent, 0.1 to 0.5 percent of antioxidant and 0.5 to 5 percent of silicone oil. The invention provides a method for thermoplastic conductive plastics by attaching the metal powder to the glass fibers twice and mixing the glass fibers, the metal powder and plastics for pelleting by utilizing the characteristics of easy machining and dispersion of the glass fibers in the plastics, and the prepared thermoplastic conductive plastics have the characteristics of simple and convenient production process, uniform dispersion of the metal powder, small addition amount, controlled conductivity and smooth surfaces of products.

The invention discloses a preparation method of an attapulgite modified bio-based polyurethane foam insulation material. The preparation method comprises the steps of compounding propanediol obtained by liquefying cellulosic biomass and attapulgite to obtain compound propanediol, and compounding modified attapulgite obtained through acid modification and organic modification and isocyanate to obtain compound isocyanate; mixing propanediol or compound propanediol, a foam stabilizer, a foaming agent and a catalyst uniformly to obtain a viscous mixture; quickly adding isocyanate or compound isocyanate to the viscous mixture in a stirring state, and aging the product at a certain temperature for a while after complete foaming and curing, thus obtaining a rigid polyurethane foam insulation material with a flame retardant function. The preparation method has the characteristics of simple process, low production cost, no need for special equipment, easiness in implementation of industrialization and the like. The polyurethane foam insulation material is a rigid foamed plastic with good flame retardance.

The present invention relates to a steel wire having an excellent straightness quality and a method for manufacturing same. The steel wire having an excellent straightness quality comprises a wire which goes through, after going through a wire drawing step, a heating step in which the wire is heated in a state where tension is applied thereto, and then goes through a cooling step, wherein when thewire is wound around a winding part having a diameter larger than the diameter of the wire during a predetermined period and then the linearity of the wire configured to have length of 400 mm is measured, the linearity of the wire is 30 mm or less. A method for manufacturing a steel wire having an excellent straightness quality comprises a wire preparing step, a heating step, a cooling step, anda linearity measuring step.

The invention discloses a low-VOC, high-solid-content water-based paint based on acrylic resin and a preparation method thereof. The water-based paint prepared by using the formula of the invention can reduce viscosity, increase solid content and have relatively low VOC. It still maintains excellent performance in terms of adhesion, acid and alkali resistance.

The invention proposes a method for preparing a flame-retardant polymer polyol for high resilience. After the preparation process of flame retardant selection and matching and polymerization reaction, it becomes a flame retardant polymer polyol product. The polymer polyol prepared by the method of the invention has low cost and low viscosity, and its products have flame retardancy, low smoke emission, no toxic gas is emitted during combustion, and the physical properties of the products are not reduced. It is suitable for use in the preparation of flame-retardant polymer polyols for high resilience.

The invention discloses a room-temperature moisture-curable single-component flame-retardant polyurethane sealant and a preparation method thereof. The sealant is prepared from the following raw materials in parts by weight: 30-55 parts of liquid polyether type polyurethane pre-polymer base stock, 10-30 parts of flame-retardant plasticizer, 0.1-1 part of silane coupling agent, 15-30 parts of flame-retardant powder, 10-30 parts of filler, 0.01-0.05 part of catalyst and 0.2-3 parts of methyl benzenesulfonyl isocyanate, wherein the liquid polyether type polyurethane pre-polymer base stock is prepared from the following raw materials in parts by weight: 32.8-57.64 parts of common polyether glycol, 28.82-54.67 parts of flame-retardant polyether glycol, 12.51-13.53 parts of polyisocyanates, and 0.01 part of catalyst. The room-temperature moisture-curable single-component flame-retardant polyurethane sealant is excellent in physical performance, thixotropic property and flame-retardant performance, and convenient for construction.