38results about How to "Strong interface interaction" patented technology

The invention discloses a polyvinyl chloride toughened and reinforced masterbatch, which is made of the following raw materials in weight percentage: 5%-40% of thermoplastic elastomer, 5%-40% of modified kaolin, and 0%-20% of processing aid , and the balance is polyvinyl chloride. The invention also discloses the preparation method and application of the master batch. The polyvinyl chloride toughened and reinforced masterbatch of the present invention adopts polyurethane thermoplastic elastomer as raw material, combined with modified kaolin, there is good interfacial interaction between modified kaolin, polyurethane thermoplastic elastomer and matrix resin, and can effectively transfer stress, thereby Significantly improve the impact strength and tensile properties of polyvinyl chloride, add the masterbatch to polyvinyl chloride, and process it to prepare high-strength and high-toughness polyvinyl chloride nanocomposites, and the tensile strength of the prepared polyvinyl chloride nanocomposites Up to 53.1MPa or more, the elongation at break is over 220%, and the notched impact strength is over 12.3kJ / m2.

The invention discloses a flexible high-strength MXene-based electromagnetic shielding composite film, comprising a conductive layer Ti 3 C 2 T x MXene / silver nanowires and aramid nanofibers with polymer reinforcement, Ti 3 C 2 T x The mass fraction of MXene / silver nanowire conductive layer is 10-80%; Ti 3 C 2 T x The mass ratio of MXene to silver nanowires is 10:0.5˜10:1.5. The invention also discloses a method for preparing a flexible and high-strength MXene-based electromagnetic shielding composite film. The composite film prepared by the invention has excellent flexibility and mechanical properties, good electrical conductivity and broadband high electromagnetic shielding efficiency, and can meet the requirements of aerospace, aerospace, Applications in military engineering, artificial intelligence, and flexible wearable electronics.

A transparent hydrophobic wear-resistant coating and a preparation method therefor. The transparent hydrophobic wear-resistant coating is composed of an epoxy resin layer and a low-surface-energy fluorine-containing layer which are arranged in sequence from top to bottom. The preparation method therefor comprises: (1) blending epoxy resin and a curing agent into an organic solvent, and carrying out ultrasonic treatment to obtain a coating solution, the total content of the epoxy resin and the curing agent being 0.001-5wt%; by adopting a dip-coating method for a substrate material, uniformly adhering the coating solution to the surface of the substrate material, and taking out and curing to obtain the epoxy resin layer; and (2) preparing the low-surface-energy fluorine-containing layer: coating the epoxy resin layer with the fluorine-containing solution, and drying to obtain the transparent hydrophobic wear-resistant coating. The coating is equivalent to glass in transparency, the surface contact angle is 102° or above, and the hydrophobicity of the coating is controllable; the coating has excellent mechanical strength and bonding property and is convenient for large-scale industrial production.

The invention provides a high-strength and high-thermal-conduction nylon composite material and a preparation method thereof. The nylon composite material is composed of the following raw materials in parts by weight: 100 parts of nylon resin, 5-30 parts of carbon fiber, 10-30 parts of heat-conducting filler, dispersed 0.1-5 parts of anti-oxidant, 0.1-5 parts of antioxidant; the nylon resin is composed of 5-30% graphene nylon masterbatch and 70-95% pure nylon resin; the surface of the carbon fiber is grafted with carbon nanotubes; The invention pretreats high thermal conductivity fillers such as graphene and carbon nanotubes before melt blending, so that the fillers are well dispersed and a thermal conduction path can be constructed at a low content, thereby significantly improving the thermal conductivity of the composite material, and through the matrix Adding carbon fiber to the material improves the overall mechanical properties of the material, improves the dimensional stability, and reduces the water absorption of nylon.

The invention discloses a cyanate resin raw material composition and cyanate resin and a cyanate resin metal composite material and a preparation method thereof. The cyanate resin raw material composition comprises, based on 100 parts by weight, 40-89.5 parts by weight of cyanate monomer material, 10-50 parts by weight of short glass fiber, 0.01-0.1 part by weight of catalyst, and 0.2-10 parts byweight of liquid promoter, wherein the short glass fiber contains a boron element, and on the basis of 100 parts by weight of the short glass fiber, the content of the boron element is 15 parts by weight or above based on B2O3. The use of the cyanate resin raw material composition is beneficial for increasing the bonding force between a resin material and a metal material in the resin metal composite material.

The invention provides a method for preparing environmentally-friendly plastic wood and relates to a method for preparing plastic wood. The method solves the problems of high monomer volatility and low monomer conversion rate in the conventional preparation method of the plastic wood. The method comprises the following steps of: I, mixing an organic monomer, an initiator and a polymerization promoter uniformly to obtain impregnation liquid; II, adding wood and the impregnation liquid into a reaction tank and vacuumizing the reaction tank; III, performing pressurization by introducing air; IV,wrapping the wood with aluminium foil, placing the wood at normal temperature and under normal pressure, and then heating the wood to obtain the environmentally-friendly plastic wood. The environmentally-friendly plastic wood prepared by the method has the advantages of high monomer conversion rate of 75 to 88 percent, no volatility and no peculiar smell during later application, compressive strength parallel to grain of 90 to 120 MPa, swelling-resistant rate of 40 to 52 percent after being soaked continuously for 200 hours, high size stability, weight loss rate of 7 to 14 percent after beingsubjected to fungal erosion for 12 weeks and high corrosion resistance. The environmentally-friendly plastic wood can serve as building and interior decoration materials.

The invention discloses a preparation method of a high-toughness and high-strength carbon nanotube / epoxy resin composite material, which belongs to the field of polymer composite materials. The method is to use block copolymer-epoxy-terminated polyether polysiloxane as a dispersant for carbon nanotubes, and to coat the surface of epoxy-terminated polyether polysiloxane to make carbon nanotubes The tubes are uniformly dispersed in the epoxy resin, at the same time, the organosilicon and polyether flexible chain structure in its block structure and the carbon nanotubes synergistically toughen the epoxy resin to prepare a high toughness, high strength carbon nanotube / epoxy resin composite material. The preparation process of the invention has no organic solvent, is green and environment-friendly, has simple operation and moderate conditions, can be applied to epoxy resins of conventional grades on the market, and meets the needs of large-scale production. The high toughness, high strength and excellent comprehensive performance of the carbon nanotube / epoxy resin composite material make it have great market application value in the fields of machinery industry, building materials, electronic appliances, aerospace and the like.

The invention discloses a preparation method of a high-performance nylon nanocomposite material, which comprises the following steps: using self-made nano silicon dioxide as a filler, first designing a nano-SiO 2 The polyamino acid molecular chains with similar chemical structure characteristics to nylon are grafted on the surface of the ball, and it is expected to play the dual network structure of the particle physical network and the entanglement network of the grafted molecular chains and the matrix molecular chains at the same time, so as to realize the nanoparticle in the polymer matrix. Uniform dispersion in the medium and good interfacial interaction between nanoparticles and matrix materials. Then the macromolecularly modified SiO 2 Add it to nylon for melt blending, so as to develop a new type of high-performance nylon nanocomposite material with wide application prospects.