32results about How to "High thixotropy" patented technology

The invention relates to an acrylate structural adhesive being resistant against solvent scrubbing, which includes a component A and a component B; the component A is composed of: an acrylate monomer,methacrylic acid, toughening rubber, toughening filler, an accelerant, a stabilizer and a coupling agent; the component B is composed of: an oxidizing agent, epoxy resin, a plasticizer, filler and pigments. The component A and the component B are uniformly stirred according to the volume ratio of 10:1 to produce the acrylate structural adhesive. The acrylate structural adhesive is resistant against solvent scrubbing, is high in thixotropy and is good in infiltrability on an adhesion interface. In addition, after solidification, an adhesive layer is good in toughness and is high in adhesion force between anodised alumina, Al/Mg alloy, an electrophoresis ED layer, ABS/PC and the like plastic alloy, etc.

The invention belongs to the technical field of construction materials, and particularly relates to a low-temperature repairing material for a high-speed rail base concrete in a severe cold region and application of the concrete low-temperature repairing material. The low-temperature repairing material comprises the following components: 425 ordinary Portland cement, 425 sulphoaluminate cement, 725 sulphoaluminate cement, a waterproof admixture, rubber powder, an aggregate, a water reducer, a construction improver, a water-retaining agent, an early strength agent, a nano multifunctional water repellent agent, and PP (polypropylene) fiber. The low-temperature repairing material for the high-speed rail base concrete in the severe cold region, provided by the invention, has a repairing construction time meeting a skylight time requirement of a high-speed rail, has compression strength after completion of hydration matching with that of the base concrete, is high in tensile bond strength with the base concrete, is slightly expanded and strong in anti-freezing circulation capability at -40 DEG C, can avoid secondary detachment, and well meets requirements on the low-temperature repairing material for the high-speed rail base concrete in the severe cold region.

The invention discloses a high-toughness and high-strength gypsum product and a preparation method thereof. The high-toughness and high-strength gypsum product is prepared from the following components in parts by weight: 70-80 parts of gypsum powder, 15-20 parts of filler, 0.2-0.5 part of dispersing agent, 0.1-0.2 part of defoaming agent, 2-5 parts of dispersible latex powder, 5-10 parts of gypsum whisker and 1-5 parts of glass short fiber (or 0.1-0.5 part of chemical fiber short fiber). The high-toughness and high-strength gypsum product is high in strength: the 28d flexural strength is up to 20Mpa at most, and the 28d compressive strength is up to 180Mpa at most; and the surface hardness is up to 6H. The toughness is good: the maximum bending toughness is tested to be 68mm by adopting an MEW-40 wood universal testing machine. The technical problems that the traditional gypsum product is low in strength and poor in toughness are solved.

The invention relates to anti-cracking mortar powder for thin plastering and leveling of inner walls and a preparation method of the anti-cracking mortar powder. The anti-cracking mortar powder for thin plastering and leveling of inner walls is prepared from the following raw materials: in parts by weight, 17-25 parts of a cementing material, 0-10 parts of active filler, 0-5 parts of inert filler,70-75 parts of aggregate, 0.1-0.2 part of a water-retaining thickener, 0-0.8 part of an adhesive, 0-0.5 part of a binder, 0.2-0.3 part of a water-conducting thickener, 0.05-0.15 part of crack-resistant fiber, 0-0.5 part of a slipping agent and 0-0.1 part of a thixotropic agent. The mortar powder has good water resistance, high strength, no easy cracking, no indoor environmental pollution and goodworkability.

The invention relates to a quick-setting two-component polyurethane structural adhesive as well as a preparation method and application thereof. The component A in the double-component polyurethane structural adhesive is prepared from castor oil, autocatalytic polyol, tackifying resin, a coupling agent, a catalyst, filler, a molecular sieve and silicon dioxide, and the component B is prepared fromtoughened polyol, a plasticizer, isocyanate, glass beads, filler, a molecular sieve and silicon dioxide. The bi-component polyurethane structure not only has enough operation time, but also can be quickly cured, is high in bonding strength and universality, does not flow during vertical surface sizing, can meet the sizing process of various complex structures, and is very suitable for quick bonding and positioning of automotive upholstery.

The invention provides a heatproof oil-resistant phenolic epoxy static anticorrosive paint and a preparation method thereof, belonging to the field of paints. The paint comprises a component A and a component B. The component A comprises, by mass, 15 to 21% of a phenolic epoxy resin, 2 to 8% of a modified resin, 0.1 to 0.3% of an antifoaming agent, 0.2 to 0.5% of a coupling agent, 0.5 to 0.7% of a thixotropic agent, 12 to 17% of conductive mica powder, 7 to 12% of ferrophosphorous powder, 1 to 5% of titanium dioxide, 10 to 17% of talcum powder, 12 to 18% of feldspar powder and 15 to 20% of a solvent. The component B comprises, by mass, 65 to 75% of a curing agent and 25 to 35% of a solvent. The paint has effectively improved heat resistance and can resist a temperature as high as 200 DEG C; the paint has an excellent anticorrosive effect and excellent tolerance to acid, alkali, salt, oil and chemicals and is capable of enhancing an anti-rust effect and effectively reducing cost while providing conductive performance.

The invention relates to multipurpose convenient cement. The multipurpose convenient cement is composed of the following raw materials in parts by weight: 20-50 parts of cement, 41.9-66.65 parts of dry sand, 2-10 parts of calcium carbonate, 0.1-0.5 part of cellulose ether, 0.5-4.5 parts of redispersible latex powder, 0.05-0.1 part of an anti-skid auxiliary agent, and 0.1-0.5 part of starch ether. The product is prepared by screening natural sand, washing with water and sending to a baking rotary furnace to baking the natural sand to form dry sand, then pouring the above raw materials into an electric dry mixer according to the above ratios, stirring, after 10 min, conveying the uniformly-stirred raw materials into a material storage tank and packaging by a packager. The cement is environment-friendly, and has the fluidity, the volume density, the water retention property, the water-adsorption gas content, the plastic cracking property, the dry shrinkage, the compressive strength, the rupture strength, the adhesive strength, the flexibility, the impact resistance and the like all substantially better than those of common cement dry-mixed products.

The invention aims to provide special ultrathin-layer masonry mortar for sintered building blocks made of regenerated fine powder containing red bricks. The special ultrathin-layer masonry mortar comprises the following components in parts by weight: 250-430 parts of cement, 195-375 parts of regenerated fine powder containing red bricks, 300-525 parts of fine sand, 6-10 parts of redispersible latex powder, 1.5-2 parts of hydroxypropyl methyl cellulose ether, 0.2-1.05 parts of water reducing agent and 0.3-0.5 part of wood fiber. According to the ultrathin-layer masonry mortar, all components utilize red brick-containing recycled fine powder, sorting and powder removal are not needed in the processing process of red brick-containing construction waste, the production process is low-carbon and environment-friendly, the cost is low, and the utilization problem of the sand powder mixture which is most difficult to utilize in the construction waste recycling process is successfully solved. The regenerated fine powder is adopted to partially replace natural fine sand, the mortar joint thickness of the obtained ultrathin-layer masonry mortar is not larger than 2 mm, and the ultrathin-layermasonry mortar has the advantages of being high in activity, high in water-retaining property, good in construction performance, capable of insulating heat and saving energy, environmentally friendlyand the like.

The invention provides a method for producing ceramic tile bonding mortar by using black casting sand. The method comprises the following steps: crushing the agglomerated black casting sand into sandgranules through a crusher, then removing iron through a magnetic separator, then sending the iron-removed sand granules to a high-frequency vibrator so as to remove adhesive films on the surface of the black casting sand granules, sending the black casting sand obtained in the previous step to a drum screen for screening so as to select black casting sand fine powder, black casting sand fine sandand black casting sand medium sand, mixing, in parts by weight, the black casting sand fine powder, a mineral activator, redispersible emulsion powder, hydroxyethyl methyl cellulose and a polycarboxylic acid superplasticizer at a ratio, performing uniform stirring, then transferring the mixture into a grinding device for activation and grinding so as to obtain ceramic tile adhesive additives, mixing, in parts by weight, the ceramic tile adhesive additives, cement and the black casting sand fine sand at a ratio, and performing even stirring so as to obtain the ceramic tile bonding mortar. Theblack casting sand has complete utilization, is applied to production of the ceramic tile bonding mortar, and has significant economic, environmental and social benefits.