41results about How to "High flexural modulus of elasticity" patented technology

The invention discloses a PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and a preparation method thereof and belongs to the field of high molecular composite materials. The wood-plastic composite material is prepared from one or more of plant fibers, lignin, sulfate, PVC, a thermal stabilizer, a lubricant, a plasticizer, an anti-impact modifier, a coupling agent, a foaming agent and a foaming regulator, and is extruded and processed through a screw rod. Compared with the prior art, the lignin and the sulfate are added into the wood-plastic composite material at the same time, the flowability is improved and the mutual effect between molecules is improved, so that the filling amount of the plant fibers is improved, and the mechanical property, thermal stability property, and anti-ultraviolet, anti-ageing and bacterium corrosion resisting properties of the wood-plastic composite material are improved.

The invention relates to a wet and dry dual-purpose mould pressing fiber-glass reinforced plastics methane tank as well as the production method and the facility thereof, and is characterized in that dry ferment and wet ferment performed in a same fermentation tank is realized, air production can be improved by the dry ferment in winter, the discharging and the feeding are performed conveniently by the wet ferment in summer, the production method adopts positive or vibration, vacuum and pressure continuous mould pressing methods, and the production facility adopts a compacting tool set and a vibration-type vacuum hydraulic machine. Compared with the prior art, the production facility of the invention reduces 90 percents of investment cost, reduces 85 percents of energy consumption, reduces 5 percents of product cost on the precondition of same capacity; in addition, on the basis, the flexural modulus are improved by 1.5 times and 2 times respectively compared with the flexural modulus of the prior mould pressing fiber-glass reinforced plastics and the hand lay-up fiber-glass reinforced plastics; therefore, the safety factor is increased, the safety operation of the methane tank is ensured, the service life is prolonged, so as to facilitate the commercialization of the fiber-glass reinforced plastics methane tank and the technology improvement of the mould pressing fiber-glass reinforced plastics industry, and be suitable for the popularization in China.

The invention relates to a formula for enhancing mold corrosion resistance of a wheat straw / PP (polypropylene) wood-plastic composite material by using antimicrobial agents. A filling material wheat straw modified by a coupling agent KH550 and a matrix PP are subjected to compounding and hot pressing to prepare the wheat straw / PP wood-plastic composite material with or without three antimicrobial agents (zinc borate, chlorothalonil and SD-36M); and five mold corrosion experiments are performed on the wheat straw / PP wood-plastic composite material with or without the antimicrobial agents to analyze the improvement action of the antimicrobial agents on the corrosion resistance of the wheat straw / PP composite material and obtain the optimal addition amounts of the antimicrobial agents. The result indicates that the zinc borate and chlorothalonil have favorable improvement action on the corrosion resistance of the wheat straw / PP composite material, and the improvement action of the SD-36M is small; the optimal addition amounts of the zinc borate and chlorothalonil are respectively 1% and 1.25%; and the wheat straw / PP composite material has favorable comprehensive properties after mold corrosion.

This invention provides a talc-containing polypropylene resin composition using in-line compounding, which can solve a problem that, when the degree of compression is reduced to eliminate white points derived from poor dispersion of an inorganic filler, the amount of introduced air is increased, leading to adverse effect of productivity particularly in the case of a large kneader, and a process for producing the same. The polypropylene resin composition comprises degassing compressed talc (A) and a polypropylene resin (B). The degassing compressed talc has a bulk specific gravity of 0.3 to 1.0 and a degree of compression of 3.1 to 7.0 and is produced by degassing compression of talc having an average particle diameter of 0.1 to 12 mum and a bulk specific gravity of 0.1 to 0.5. In this degassing compressed talc, the proportion of a fraction having a size of not less than 1,000 mum as sieved by a rotap method is not more than 15% by weight.

Provided is an adhesion improver for carbon-fiber-reinforced polyolefin-based resin compositions which improves the mechanical properties including bending strength and bending modulus. The adhesion improver is for use in carbon-fiber-reinforced resin compositions which comprise carbon fibers and a polyolefin-based resin, and is characterized by comprising an acid-modified polyolefin-based resin unit and an epoxy resin unit, the acid-modified polyolefin-based resin unit and the epoxy resin unit having been bonded to each other by an ester structure and the epoxy resin unit containing a secondary hydroxy group.

The invention relates to the technical field of building materials, in particular to a high-strength building wallboard. The high-strength building wallboard comprises a roof (1); a first PVC board (2) adheres to the lower portion of the roof (1), and an upper fixing frame (3) is mounted on the lower portion of the first PVC board (2); a second PVC board (5) vertically adheres to the lower portionof the upper fixing frame (3), and a cross beam board (4) adheres to the other face, corresponding to the face adhering to the upper fixing frame (3), of the second PVC board (5); a self-tapping screw (6) is fixed to an upper wallboard frame (7) which is fixedly connected with the cross beam board (4) through the self-tapping screw (6); and a building wallboard body (9) is clamped between the upper wallboard frame (7) and a lower wallboard frame (11), and a heat conduction pipe (10) is mounted in the center of the building wallboard body (9). According to the high-strength building wallboard,two outlets and two inlets which constitute the heat conduction pipe (10) are formed in the two side faces of the double-layer wallboard, the contact area of the heat conduction pipe and the double-layer wallboard is increased, and the double-inlet double-outlet effect is achieved through the heat conduction pipe, so that the indoor environment keeps balanced.

The invention relates to a composite floor and a preparation equipment group thereof, and belongs to the technical field of co-extrusion foam boards. The composite floor comprises a core body, the core body is an integrally-formed platy piece made of foaming materials, and the composite floor further comprises a reinforcing layer arranged in the core body and a protective layer arranged on the surface of the core body. The preparation equipment group comprises a mold, a core material extrusion device, a reinforcing layer material conveying device, a protective layer material extrusion device,a cooling device and a traction device. The composite floor has excellent bending elastic modulus performance, and the equipment cost, the preparation energy consumption and the occupied space of equipment of the composite floor can be effectively reduced through the equipment group.

The invention discloses multifunctional waste PET and polypropylene in-site fiber-forming composite material prepared from a multi-component compatiblizing and toughening agent. The multi-component controllable reactive compatiblizing and toughening agent is prepared from polypropylene, an elastomer 1, an elastomer 2, a difunctional group reactive monomer, a second monomer and a peroxide initiator. Then, multifunctional waste PET is prepared from an antioxidant and the prepared multi-component controllable reactive compatiblizing and toughening agent and waste PET; and finally, the in-site fiber-forming composite material is prepared by compounding the prepared multifunctional waste PET with polypropylene. The in-site fiber-forming composite material prepared by the technical scheme of the invention has obviously improved toughness (the notch impact strength of a cantilever beam) and rigidity (tensile yield stress and bending elastic modulus) in comparison with the raw material polypropylene and has relatively good reproducibility of mechanical performance; meanwhile, the invention also changes a great amount of waste which mainly refers to waste PET domestically generated every year into resources, thereby having remarkable economic and social benefits.

The invention discloses application of active silica fume as rubber and white carbon black which is an engineering plastic additive. Based on researches of the invention, silica fume collected by using smoke and dust separation and purification power complete equipment has a smaller granularity of 0.10-0.255mu m and an active index higher than 120%, achieves the activity of natural cinerite and materialization indexes similar to fumed silica (white carbon black), but has cost far lower than that of the white carbon black produced specifically. In addition, proved by the experiments of Shanghai Rubber Industry Institute, after the white carbon black in natural rubber and regenerated rubber is replaced by the active silica fume, the elongation, tear resistance and death resistance of the rubber can be improved greatly and the quality of the rubber can be guaranteed. The active silica fume can replace the function of the white carbon black in the rubber and engineering plastics, can replace powdery mineral filler ground by the traditional mechanical power, improve the cost performance of materials, and reduce the cost of materials.

Belonging to the technical field of plastic products, the invention discloses a glaze-imitating colored plastic glazed tile and a preparation method thereof. The glazed tile comprises an upper layer and a lower layer, the upper layer comprises the following raw materials by mass percentage: 65-75% of AS resin, 15-30% of an AS resin modifier, 2.5-3.5% of a coloring pigment I, and 0.5-5% of an assistant I; the lower layer comprises the following raw materials by mass percentage: 50-60% of PVC resin, 30-40% of nano-active CaCO3, 3.5-5% of an additive II, and 0-3.5% of a coloring pigment II; the AS resin modifier is at least one of ASA resin and acrylic ester; the coloring pigment I is a transparent pigment; and the nano-active CaCO3 crystalline form is a cubic crystal form. The glazed tile provided by the invention has good appearance effect and glaze-imitating effect, and the weatherability, impact resistance and environmental friendliness are all superior to clay glazed tiles in the prior art.

The invention relates to a poplar sheet material surface layer reinforcement method and belongs to the technical field of sheet material reinforcement. The poplar sheet material surface layer reinforcement method comprises the following steps of 1, sheet material preparation, 2, surface polishing, 3, surface layer softening, 4, surface layer compression and 5, stabilization treatment. Raw poplar is divided into sheet materials having a certain thickness by sawing, the sheet materials are subjected to surface polishing, the sheet materials subjected to surface polishing are subjected to softening treatment, the softened sheet materials are fast put into a compressor, the sheet materials are subjected to surface layer compression, and the compression-molded sheet materials are subjected to stabilization treatment. The poplar sheet material surface layer reinforcement method has the advantages that 1, only a surface layer having the thickness of 2-3mm is compressed, a sheet material yield is high, and resources are saved, 2, optimal properties are obtained in shortest time by a lowest cost, and 3, the poplar sheet material surface layer reinforcement method opens a novel approach for poplar value-added application and high-efficiency utilization.

The invention discloses a continuous-fiber-reinforced wood plastic and a preparation method thereof. The preparation method comprises the following steps: long fiber surface modification, granulation and extrusion. The long fibers subjected to surface modification are used for reinforcing the wood plastic material, so that the wood plastic material has favorable compatibility. The addition position of the long fibers is beyond the shearing position of the screw, so the long fibers do not have the action of shearing force in the extrusion forming technique and can not be destroyed, thereby forming continuous fiber distribution in the obtained wood plastic. By reasonably selecting the weight parts of the components, the bending strength, elastic modulus in bending, shock strength and other mechanical properties of the end product are obviously enhanced.

The invention discloses a flame-retardant PVC (polyvinyl chloride) profile for doors and windows and a production method thereof. The flame-retardant PVC profile comprises, by weight, 55-60 parts of PVC waste, 13-17 parts of wood flour, 15-18 parts of light calcium carbonate, 0.38-0.54 part of titanium dioxide, 6.4-8.3 parts of CPE impact modifier, 0.72-0.96 part of organic tin stabilizer, 0.35-0.42 part of metallic soap stabilizer, 0.9-1.2 parts of fatty alcohol lubricant and 1.3-2.5 parts of flame retardant. The PVC profile is good in flame retardant effect, can reach 2.1mmV1 level in vertical flammability and good in heat resistance. Meanwhile, the PVC profile has excellent impact resistance, bending deformation resistance and tensile impact resistance.

The invention discloses a preparation method of a glass fabric-sandwiched epoxy board. The preparation method comprises the following steps: S1, carrying out sizing permeation on mica paper and glass fabric by using organic silica gel water; and S2, carrying out paper receiving, weight balancing, glass fabric clamping and plate stacking, plate tearing, pressing and plate shearing, so as to prepare the glass fabric clamping epoxy plate. The bending elastic modulus of the produced glass fiber cloth product is improved in the aspect of performance, and the glass fiber cloth product is not prone to breakage and good in toughness.