35results about How to "Effective toughening" patented technology

The invention belongs to the technical field of composite materials, and provides a heat and humidity resistant PEEK composite material and a preparation method thereof, the heat and humidity resistant PEEK composite material comprises the following raw materials by weight: 85-110 parts of PEEK; 5 to 15 parts of polytetrafluoroethylene; 5 to 15 parts of carbon fiber; 5 to 10 parts of modified montmorillonite; 0.5 to 2 parts of a compatilizer; and 0.1 to 0.5 part of an antioxidant. The preparation method comprises the following steps: putting PEEK and polytetrafluoroethylene into a drying oven for drying, then adding the dried PEEK and polytetrafluoroethylene, carbon fibers, modified montmorillonite and an antioxidant into a high-speed mixer for mixing, and uniformly mixing to obtain a mixture; the preparation method comprises the following steps: mixing the raw materials, adding the mixture into a double-screw extruder, extruding and granulating, cooling, and drying to finally prepare the PEEK composite material, while maintaining excellent friction resistance and mechanical properties, the heat and humidity resistance is obviously improved, and the PEEK composite material has a wide application value.

The invention relates to light carbon fiber concrete for a building outer wall and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following components in parts by weight: 300 to 320 parts of ordinary Portland cement, 460 to 480 parts of fine aggregate, 940 to 980 parts of coarse aggregate, 35 to 40 parts of glass beads, 10 to 13.5 parts of modified carbon fibers, 5.5 to 6.8 parts of a water reducing agent and 115 to 125 parts of water, a surface modifier integrating dispersing, coagulation accelerating and toughening is grafted on the surface of the modified carbon fiber through coupling, when the modified carbon fiber is applied to lightweight concrete, effective regulation and control on a fiber-cement matrix interface are realized through the synergistic effect of a surface organic structure, and excellent comprehensive performance with high strength and high toughness is obtained.

The invention relates to the technical field of reinforcing and toughening of high polymer materials, and particularly discloses a high polymer grafted surface thorn-type mesoporous silica nano composite particle as well as a preparation method and application of the high polymer grafted surface thorn-type mesoporous silica nano composite particle. The nano composite particle is specifically characterized in that an inner core is a silicon dioxide nano particle with a center diverging mesoporous structure and a spiny surface; the outer layer is a polymer grafted on the surface of the inorganic core; mesoporous silicon dioxide nanoparticles with spikes on the surface, an amino silane coupling agent, a polymerization initiator and a polymerization monomer are used as raw materials, and the particle size of inorganic core particles and the grafting length of outer-layer macromolecules can be regulated and controlled in the synthesis process. The nano composite particles with the structure are used as polymer filler, the light transmission performance is similar to that of pure macromolecules, and the mechanical property is superior to that of pure inorganic nano particles; compared with traditional nanoparticles grafted with macromolecules, the light transmittance, rigidity and obdurability are comprehensively improved. The nano composite particle can keep excellent light transmission while effectively strengthening and toughening a high-light-transmission polymer matrix.