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77 results about "Tree resin" patented technology

Shape memory functional material with gutta percha and method for preparing same

The invention relates to a shape memory functional material containing gutta-percha and a method for making the same. The functional material is technically characterized in that the compositions in mass portion are: 10 to 50 portions of gutta-percha, 10 to 60 portions of rubber, 10 to 30 portions of polyethylene, 0.5 to 3 portions of accelerating agent containing sulfur, 1 to 3 portions of antideteriorant, 1 to 5 portions of zinc oxide, 0 to 2 portions of magnesia, 1 to 5 portions of sulfur, 1 to 3 percent of dicumyl peroxide, 10 to 70 portions of siliceous reinforcing agent and 1 to 10 portions of stearine. The invention provides the shape memory functional material containing gutta-percha and the method for making the same and can be applied to produce the products such as an orthopedic external fixation material, a prosthetic limb sleeve, a sports protection tool and a health beauty appliance. A medical gutta-percha plate replaces plaster to serve as the orthopedic external fixation material because the gutta-percha plate is sanitary, light and convenient and radiotransparent X, has convenient and simple operation, high quality and low price, and is more popular compared with other imported macromolecule materials for replacing plaster; the shape memory functional material can be made into a film stuck with the metal perfectly because the material has good radar wave-transparent performance, thereby synthesizing a radar wave-transparent material for sealing a pore radar waveguide antenna and contributing to the development of the war industry.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

High-temperature salt-resistant fluid loss additive modified gum resin for drilling fluids

The invention discloses a high-temperature salt-resistant fluid loss additive modified gum resin for drilling fluids, wherein the resin is prepared from the following raw materials: 220-240 parts of clear water, 30-40 parts of sodium methylallyl sulfonate, 10-15 parts of N,N-dimethylacrylamide, 0.5-1.0 part of a temperature-resistant monomer, 20-30 parts of methacryloyloxyethyl trimethyl ammoniumchloride, 3-5 parts of a chelating agent, 0.5-1.0 part of an initiator, 25-35 parts of a gum resin, 8-10 parts of a 40% sodium hydroxide solution, 5-10 parts of propylene oxide and 10-20 parts of an additive, wherein the temperature-resistant monomer is 4-vinyl guaiacol, the chelating agent is sodium citrate, the additive is polyvinyl alcohol powder, and the initiator is a combination of an azo initiator and a redox initiator. According to the invention, the high-temperature salt-resistant fluid loss additive modified gum resin has good temperature resistance, good salt resistance and environmental protection performance, solves the problems of poor temperature resistance, poor salt resistance, high production cost and complex process of the fluid loss additive in the existing drilling process, has strong biodegradability, and effectively reduces the pollution to reservoirs and environments.
Owner:石家庄华莱鼎盛科技有限公司

Cutting knife for collecting natural rubber and cutting method of cutting knife

The invention provides a cutting knife for collecting natural rubber and a cutting method of the cutting knife. The cutting knife for collecting natural rubber are arranged on a rubber tree, wherein aY-shaped slot is formed in the rubber tree, the cutting knife includes a fixing component, a No. 1 arc chute, a telescopic rod, a second arc chute, an adjustment mechanism, a cutting assembly, a connecting plate, a connecting base and an insertion rod. According to the cutting knife for collecting natural rubber and the cutting method, through mutual cooperation of the Y-shaped slot, the fixing component, the No. 1 arc chute, the telescopic rod, the No. 2 arc chute, the adjustment mechanism, the cutting assembly, the connecting plate, the connecting base and the insertion rod, a Y-shaped wound can be formed in the surface of the rubber tree, and when the Y-shaped wound is compared with traditional arc wounds, the distance between overflowing gum at the highest point of the wound and a collection vessel at the lowest point is much shorter through the Y-shaped wound, so that the collection efficiency is improved, solidification, caused by long-time contact with the outside, of the gum is prevented, and negative effects on the flow of the gum at other positions are avoided.
Owner:诸暨市竟程智能科技有限公司

Intramode injection molding thin film switch

The invention relates to an intramode injection molding thin film switch. The thin film switch comprises a conductive circuit layer, wherein the conductive circuit layer is positioned at the lowest bottom of the injection molding thin film switch; the conductive circuit layer is a flexible circuit board; an injection molding composite layer is arranged on the lower surface of the flexible circuitboard; one side, far from the injection molding composite layer, of the thin film switch is attached to a concave die of an intramode injection molding die by adopting a method of combining the thin film switch with a finished product; meanwhile, a to-be-attached finished product of the thin film switch is attached to a convex die of the intramode injection molding die; and combination between thethin film switch and the finished product is realized by enabling gum to flow to the formed space between the thin film switch and the finished product so as to finally obtain an injection molding sample. The intramode injection molding thin film switch has the beneficial effects of simplifying the production procedures, lowering cost, bringing convenience to combination with the finish product,enabling the thin film switch and the finished product to be formed in an integrated body through the injection molding process, simplifying process, and achieving high production efficiency and highproduct durability.
Owner:WUHAN UNIV OF TECH

Bacillus velezensis SF305 with antagonistic effect on hevea brasiliensis and application of bacillus velezensis SF305

The invention relates to a bacillus velezensis SF305 strain and an application of the bacillus velezensis SF305 strain. The preservation number of the bacillus velezensis SF305 is CCTCC NO: M 2022129, the bacillus velezensis SF305 has a remarkable inhibition effect on hevea brasiliensis, a good biocontrol resource is provided for prevention and treatment of the hevea brasiliensis red root disease, and the bacillus velezensis SF305 has good application potential in prevention and treatment of the hevea brasiliensis root disease. Meanwhile, the bacillus velezensis SF305 disclosed by the invention has relatively good bacteriostatic activity on phytopathogens such as colletotrichum gloeosporioides of rubber trees, colletotrichum oxysporum of rubber trees, pyricularia oryzae, fusarium oxysporum of cucumbers, phytophthora capsici, botrytis cinerea, xanthomonas oryzae pv. Oryzae, xanthomonas oryzae pv. Oryzicola and the like, and also can promote crop growth, increase the fresh weight of crops and increase the yield of the crops. The strain has the application prospects of disease prevention and growth promotion, and also lays a foundation for research and development of novel microbial agents for diseases such as rubber anthracnose, rice bacterial leaf blight, streak and rice blast.
Owner:RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI +1
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