70results about How to "Balance rigidity" patented technology

The invention discloses nano calcium carbonate polypropylene composite material. The composite material comprises 100 portions of polypropylene resin, 1 to 15 portions of nano calcium carbonate, 1 to 20 portions of elastomer, and 0.1 to 1 portion of stabilizing agent. The composite material is prepared by method of melt compounding by adopting an internal mixer or double screw extruder. Good rigidity is kept when the toughness of the composite is obviously improved; the composite has good cold impact resistance performance, and is applicable to injection moulding production of automobile parts, i.e. bumper, mudguard, etc.

The invention discloses a composite nanometer material and making method of polyhexamethylene adipamide (nylon 66), which comprises the following parts: 100wt% nylon 66, 5-20wt% elastic body and 5-30wt% inorganic nanometer particle, wherein these materials are blended to fuse and squeeze under 260-280 deg. c. The invention balances the rigidity, flexibility and fire resistance and size stability, which expands the applying domain of nylon 66.

The invention discloses a multi-phase copolymer polypropylene in-reactor alloy and a preparation method thereof. In the method, a compound catalyst which is prepared by combining a Ziegler-Natta catalyst and a metallocene catalyst is adopted; propylene polymerization and ethylene/alpha-olefin copolymerization which are sequentially performed are catalyzed by the components of the two catalysts together; thus a polypropylene resin phase which is mainly prepared under the action of the Ziegler-Natta catalyst is uniformly mixed with an ethylene/alpha-olefin random copolymer rubber phase which is mainly prepared under the action of the metallocene catalyst in a polymerizer; and in the method, the ethylene/alpha-olefin block copolymer which is generated under the action of the Ziegler-Natta catalyst can be utilized as a compatilizer between the resin phase and the rubber phase, so that dispersion stability of the two phases (the resin phase and the rubber phase) is guaranteed, and balance between rigidity and toughness of the material is effectively realized.

The invention relates to modified bisphenol A-type epoxy resin and a preparation method thereof; the modified bisphenol A-type epoxy resin disclosed by the invention is a product obtained by reacting bisphenol epoxy resin and octadecanedicarboxylic acid under the effect of special catalyst; a carbon chain in a special structure is led into an epoxy resin molecule structure through the addition reaction of the modified bisphenol A-type epoxy resin and an epoxy group; the preparation method comprises the following steps: mixing epoxy resin and the octadecanedicarboxylic acid evenly; then, stirring a mixture under the protection of nitrogen while heating the mixture to 95-100 degrees centigrade; adding catalyst; keeping the reaction time of a reactant within 1.5-5 hours at a temperature when the temperature of the reactant reaches to 130-170 degrees centigrade; cooling the reactant; and discharging the reactant. According to the invention, the modified bisphenol A-type epoxy resin and the preparation method thereof have advantages of low reaction temperature, fast reaction speed, high yield, light color of the modified bisphenol A-type epoxy resin and good rigidity, toughness and chemistry resistance of modified curing epoxy resin.

The invention discloses a flexible solar cell module and a preparation method and application thereof. The flexible solar cell module comprises upper skin, a first packaging adhesive film, a flexible solar cell array, a second packaging adhesive film, a supporting member, a third packaging adhesive film, and lower skin in a hot-pressing packaging in order from up to down, and the supporting member is a polymethacrylimide foam board. The preparation method comprises the steps of stacking the upper skin, the first packaging adhesive film, the flexible solar cell array, the second packaging adhesive film, the supporting member, the third packaging adhesive film, and the lower skin in order from up to down, and performing lamination. The flexible solar cell module is advantaged by low surface density, good bending and flexibility, suitability for being attached to airfoil curved surface, good reliability, no packaging problems such as warping, fragmentation, etc., and wide application in spacecrafts such as solar unmanned aerial vehicles, etc.

A three-element composition is prepared from polypropene (PP) (72-91 wt%), POE or MPOE (1-13) and BaSO4 (7-20) through mixing, stirring, kneading and extruding out. Its advantages are high impact strength, high toughness, high P/C ratio, high resistance to thermal or ultraviolet ageing, and low cost.

The invention belongs to the technical field of plastics modification, and particularly relates to a PP (propylene) composite material capable of replacing ABS (Acrylonitrile Ethylene Styrene) and a preparation method of the PP composite material. The PP composite material mainly comprises the following components in percentage by weight: 60-80 percent of PP resin, 5-25 percent of talc powder, 5-15 percent of crystal whisker, 0.5-2 percent of a sensitizer and 0.1-0.3 percent of a nucleating agent. The preparation method comprises the steps of mixing, extruding and pelleting. The composite material provided by the invention has the characteristics of high flow, high rigidity, high modulus, low shrinkage, low buckling deformation and the like, and is capable of effectively reducing the material cost and generating larger economic benefit.

The invention relates to the technical field of degradable materials, in particular to a high-content-rice husk fiber-filled PBAT-based composite material. The composite material comprises the following components: in parts by weight, 90-110 parts of rice husk powder, 35-90 parts of PBAT, 10-25 parts of PLA, 2-5 parts of a super dispersant, 5-20 parts of a compatibilizer, 1-4 parts of a heat stabilizer and 2-4 parts of a lubricant. The raw materials are mixed and stirred in a high-speed mixer at 120 DEG C, and then crushing, extrusion and injection moulding are performed. The rice husk powderas agricultural processing waste has rich raw material sources, low price and biodegradability at the same time, the rice husk powder is adopted as filler of the degradable polymer PBAT, and the rigidity and toughness of the composite material can be balanced well under the action of the processing aids; and the method has simple operation and low production cost, and is beneficial to industrial production of PBAT degradable composite materials.

The invention discloses a railway freight transport open wagon vertical column and a preparation method thereof. The wagon vertical column is prepared by composite material, flexibilizer, filler and bulking agent in the mass ratio of 100:(3 to 15):(0.1 to 10):(0.1 to 5), wherein the composite material is prepared from the following constituents in part by weight: 60 to 80 parts of nylon resin, 20 to 40 parts of reinforced fiber, 0.1 to 5 parts of coupling agent, 0.5 to 3 parts of nucleating agent, 0.2 to 3 parts of heat stabilizer, 0.3 to 1.5 parts of antioxygen, and 0.5 to 1.5 parts of lubricant. The novel wagon vertical column is in a square matrix shape (rounded) according to strength calculation, ANSYS software analysis, isotropy requirements and convenience in use: the section size is 45*45mm, the wall thickness is 6mm, and the outer fillet is 10 mm. The wagon vertical column has sufficient impact strength and bending strength, good weather resistance, balanced blasting stress, good comprehensive performance indexes of rigidity, flexibility and balance, and has the advantages of capability of recycling and the like.

The invention discloses a microcellular-foamed high-strength polypropylene composite material. The composite material is prepared from, by weight, 100 parts of polypropylene, 0.001-0.01 part of organic peroxide, 10-15 parts of K resin, 1-5 parts of an inorganic foaming agent coated with organic macromolecules, 5-15 parts of talcum powder and 1-5 parts of auxiliaries, wherein the auxiliaries comprise a surfactant, a foaming stabilizing agent and a thermal stabilizing agent, and the particle size of the talcum powder ranges from 100 mesh to 5,000 mesh. According to the microcellular-foamed high-strength polypropylene composite material, the raw materials adopted in the formula are easy to obtain and low in cost, especially the foaming agent NaHCO3 is economical and environmentally friendly, and the microcellular-foamed polypropylene material which is used for an automobile, has injection molding grade closed holes and is uniform in foam hole distribution, high in foaming rate and excellent in physical and mechanical properties can be prepared through cooperation of the foaming agent NaHCO3 and other components.

The invention discloses a high-weather-resistant high-tenacity reinforced polypropylene material for a post insulator and a preparation method of the reinforced polypropylene material. According to the key point of the technical scheme, the reinforced polypropylene material contains the following components in percentage by weight: 41%-70% of random copolymerization polypropylene, 5%-10% of a compatilizer, 0.5%-2% of a compound weather-resistant agent, 0.3%-1% of a lubrication dispersing agent, 0.4%-1% of an antioxidant, 20%-40% of glass fibers and 2%-5% of a toner. The high-weather-resistanthigh-tenacity reinforced polypropylene material for the post insulator has the advantages that the weather resistance and the tenacity are high, the retention rate of mechanical performance under a photothermal oxygen aging condition is high, the color stability is good, and the like.

The invention discloses polyester resin for epoxy resin-cured precoated anticorrosive powder coating. The polyester resin comprises the following components in percent by mass: 30-50% of polyalcohol, 5-35% of furan dicarboxylic acid, 5-25% of naphthalic acid, 5-40% of polyacid, 5-20% of an acidolysis agent, 0.04-0.15% of a catalyst and 0.01-1.0% of a curing accelerant; melt polymerization is performed on the components to obtain the polyester resin with the acid value of 65-100mgKOH/g, the viscosity of 2500-5000mPa.s, the number average molecular weight of 2000-4000 and the glass transition temperature of 55-75 DEGC. The invention further discloses a preparation method of the polyester resin. The polyester resin contains cyclic ether and naphthalene ring structures, and has excellent corrosion resistance, bending resistance and other properties; after being cured by epoxy resin E-12, the polyester resin is particularly suitable for the precoated anticorrosive powder coating; the prepared powder coating is fully applicable to a process flow of an anti-corrosive component which is coated first and then moulded, and other requirements; the conventional processing efficiency can be greatly improved; a coating film is high in hardness and outstanding in toughness.

The invention discloses a wear-resisting and high-rigidity polycarbonate lens. The wear-resisting and high-rigidity polycarbonate lens comprises a polycarbonate substrate and a coating which covers the surface of the polycarbonate substrate, wherein the coating is prepared from the following raw materials: a silicon resin pre-polymer, polyurethane, epoxy resin, hydroxyethyl methylacrylate, polyester polyol, aluminum acetylacetonate, dibutyltin dilaurate, tetrabutylammonium hydroxide, methylhexahydrophthalic anhydride, 2-methylimidazole, bicyclic amidine, a solvent, a silane coupling agent andan auxiliary agent. The wear-resisting and high-rigidity polycarbonate lens provided by the invention has good wear resistance, high surface rigidity, excellent heat-resisting performance and long service life.

The invention provides a reinforcing material for a PVC plastic panel and a preparation for the reinforcing material for the PVC plastic panel. The reinforcing material for the PVC plastic panel is prepared from the following raw materials in parts by weight: 10-30 parts of ethylene propylene rubber, 20-40 parts of nitrile rubber, 1.5-3 parts of a vulcanizing agent, 1.2-3 parts of an accelerant, 10-20 parts of silicone rubber, 1-2 parts of acrylic acid, 10-15 parts of methyl methacrylate, 10-20 parts of ethyl acrylate, 5-15 parts of butyl acrylate, 5-8 parts of styrene, 0.8-1 part of an antioxidant and 0.5-1 part of an ultraviolet absorber. The reinforcing material for the PVC plastic panel can be applied to PVC panels for furniture and PVC panels for decoration as well as PVC plastic building templates. By adding the reinforcing material into the PVC panel, the strength of the PVC panel can be improved, so that the PVC panel is good in dimensional stability and high in mechanical property. In addition, aging resistance and wear resistance of the PVC panel can be further improved, and the recycling number of times can be increased.