30results about How to "Improve interface integration" patented technology

The invention discloses a polycrystalline diamond composite sheet. In the polycrystalline diamond composite sheet provided by the invention, a polycrystalline diamond layer is not directly combined with a hard alloy layer, but a transitional layer is added between the polycrystalline diamond layer and the hard alloy layer. The transitional layer can be a single layer or formed by multiple layers, and the compositions of the transitional layer are different from one another according to different purposes. The transitional layer is added between the polycrystalline diamond layer and the hard alloy layer, so that the interface combination condition of the polycrystalline diamond composite sheet can be improved, interfacial stress can be reduced, and the abrasion resistance and the impact-resistant toughness of the polycrystalline diamond composite sheet can be synchronously improved.

The invention discloses an in-situ fiber-forming strengthened degradable medical elastic composite material and a preparation method thereof. The composite material is prepared by premixing polyglycolic acid or poly-(L-lactic acid) and poly-(L-lactide-tao-caprolactone) by a weight ratio of 20:80 to 5:95 in an inert gas atmosphere; extruding the mixture in a plastic extruder with a screw rotation speed of 10-80 r / min; hauling the extruded mixture by a hauling machine at a hauling speed of 1-30 m / min; controlling a die diameter / a spline diameter to be 1-6; and quenching with water in a hauling process. The composite material can be fully biologically degraded, has obviously improved tensile strength, enables fused mass to have little abrasion on the inner wall of an equipment cavity in the processing process and can be used in medical fields, such as degradable catheters, elastic fascia, artificial skin, and the like.

The invention discloses a surface-modified and fiber-reinforced polyurethane composite material and a preparation method thereof. The composite material comprises the following components in parts byweight: 100 parts of compound polyether polyol, 0.3-1.5 parts of silicone oil, 0.8-1.4 parts of a catalyst, 1-3 parts of a coupling agent, 6.7-12.5 parts of a compound foaming agent, 4-9 parts of a fire retardant, 27-36 parts of isocyanate, and 12-20 parts of surface modifying palm fibers. According to the surface-modified and fiber-reinforced polyurethane composite material, the surface modifyingpalm fibers are used for preparing the fiber-reinforced polyurethane composite material; the palm fibers are high in elasticity, high in toughness, and high in breaking tenacity, so that the strengthof the polyurethane composite material is improved; the palm fibers are subjected to surface modification, so that the boundary combination condition of the fibers and a material substrate can be improved. The surface-modified and fiber-reinforced polyurethane composite material are relatively high in mechanical strength and high in fireproof and flame retarding performances.

The invention relates to a thermoplastic polymer composite material with high nail-holding force, which is prepared from raw materials including base resin and polyester-maleic anhydride graft; the polyester-maleic anhydride graft is made of polyester It is co-extruded with maleic anhydride, wherein the mass percentage of polyester is 95-99%; the base resin is the same or different from the polyester forming the graft. The invention also provides the preparation method and application of the composite material. The composite material provided by the invention has the characteristics of good compatibility with PVC, high mechanical strength, high weld angle strength, high nail holding force, high and low temperature resistance, low water absorption, energy saving and environmental protection, and recyclable utilization, and can be applied to self-reinforcement Door and window profiles, panels, etc.

The invention belongs to the field of powder titanium alloy materials, and relates to a nano material and titanium alloy composite powder preparing method, in particular to a graphene and titanium alloy composite powder ball milling preparing method. Firstly, an oxidized graphene nano sheet is added in absolute ethyl alcohol, a high-speed mechanical stirrer and an ultrasonic cell pulverizer are adopted for scattering treatment, and an oxidized graphene solution is prepared; then titanium alloy powder and the oxidized graphene solution are arranged in all-direction planet ball milling equipmentto be subjected to controlled-temperature ball milling mixing; then, obtained oxidized graphene and titanium alloy powder muddy liquid is subjected to low-speed continuous stirring till oxidized graphene and titanium alloy composite powder slurry is formed; and after drying treatment, the graphene and titanium alloy composite powder is obtained. By means of the method, good interface bonding is formed between graphene and titanium alloy powder, and dispersibility of the graphene in the titanium alloy powder is greatly improved.