62results about How to "Reduce stress cracking" patented technology

Plastic aerosol container having a thermally crystallized neck finish configured to receive an aerosol valve assembly and an expanded strain oriented aerosol container body integral with the neck finish. A junction between the thermally crystallized neck finish and the strain oriented container body defines a pull point at which strain orientation begins.

The invention belongs to the technical field of refractory materials and particularly relates to a nanocarbon reinforced low-carbon magnesia carbon brick and a preparation method of the nanocarbon reinforced low-carbon magnesia carbon brick. The nanocarbon content of the nanocarbon reinforced low-carbon magnesia carbon brick is 2-4%, and is 50% of the carbon content of the current mainstream magnesia carbon brick. The sintering performance, the antioxygenic property and the thermal shock performance of the magnesia carbon brick are not reduced and are even better than those of the existing magnesia carbon brick. The required total carbon is reduced by a half, the material cost is reduced, and the service life of the magnesia carbon brick is also prolonged; and in addition, the preparationcost is low, the process is simple, and the magnesia carbon brick is suitable of industrial application and large-scale promotion.

A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt, a heat source that heats a treatment strip and the belt seam region, and a pressure applicator that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat source can be an infrared laser or an infrared lamp. Optics form a heat spot or a heat line on the strip and seam region, and a pressure wheel traverses the seam region after heating to compress the strip and seam and bond a thermoplastic polymer of the strip to the seam region of the belt.

The invention discloses a high-strength wear-resistant paint which is prepared from the following raw materials in parts by weight: 20-30 parts of tetraethoxysilane, 15-25 parts of methyl trimethoxysilane, 15-20 parts of calcium naphthenate, 3-5 parts of silica sol, 10-15 parts of crystallized silicon oxide, 7-13 parts of graphite powder and 15-20 parts of auxiliary material, wherein the particle size of the silica sol is 4-9 nm, the particle size of the crystallized silicon oxide is 25-35 mu m, the weight ratio of the silica sol to the crystallized silicon oxide is 2:(5-6), and the weight ratio of the tetraethoxysilane to methyl trimethoxysilane is (1-2):1. The high-strength wear-resistant paint is excellent in crocking resistance, good in adhesion property with a substrate, and lower in cost.

A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt and a heat and pressure source that heats a treatment strip and the belt seam region and that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat and pressure source can be a heated pressure bar engaging the entire seam region or a heated pressure wheel traversing the seam region of the entire belt width.

The invention provides a decorative expansive-type waterborne styrene-acrylic emulsion-containing fireproof and heat-insulating coating. The decorative expansive-type waterborne styrene-acrylic emulsion-containing fireproof and heat-insulating coating comprises the following raw material components in parts by weight: 20-30 parts of a styrene-acrylic emulsion, 2-4 parts of hollow glass microbeads,8-12 parts of titanium dioxide, 20-30 parts of ammonium polyphosphate, 8-12 parts of tripolycyanamide, 5-8 parts of pentaerythritol, 0.2-0.5 part of a silane coupling agent, 3-6 parts of a dispersingagent, 2-4 parts of a thickening agent, 0.2-0.5 part of a defoaming agent, 1.0-2.5 parts of a film-forming aid, 0.1-0.3 part of a wetting agent, 0.2-0.5 part of an OP-10 emulsifying agent and 20-30 of deionized water.

The invention discloses an aqueous metal anticorrosive, rustproof and thermal insulation coating, which is prepared from the following raw materials: nanometer tungsten trioxide dispersion, ammonium carbonate, hollow glass microbeads, a silicone defoaming agent, iron oxide red, zinc phosphate , aluminum tripolyphosphate, silicon benzene emulsion, aluminum tripolyphosphate, mica powder, titanium dioxide, talc, an anionic wetting agent, a dispersant, a film forming aid, a thickener, an antifreeze agent, deionized water, a coupling agent, an anti-settling agent and a nonionic hydrophobically modified polyurethane block copolymer. The coating disclosed by the invention not only has good salt water resistance, acid resistance, alkali resistance, neutral salt spray resistance and high adhesion,but also has the advantages of good reflectivity, heat insulation, environmental protection, decoration, corrosion resistance and rust resistance properties.

The invention discloses root puncture resistant filler for a waterproof roll and a production method thereof. The root puncture resistant filler is prepared by adding 10-95 percent by weight of calcium carbonate powder, 10-85 percent by weight of talcum powder, 2-50 percent by weight of wollastonite powder, 1-30 percent by weight of glass microsphere and 2-30 percent by weight of zinc oxide powder into a dry method ball miller, fully mixing for 2-3 hours and bagging. By being mixed with the glass microsphere, calcium carbonate and several other components, the compound filler can effectively improve the tension strength, the ductility and the tear strength of various waterproof rolls and reduce the maintenance frequency and the maintenance expense of the roof waterproof operation, and has higher social and economic benefits.

The invention discloses a preparation method of a liquid-proof coating adopting a gradient increasing structure, belongs to the technical field of plasma chemical vapor deposition. The preparation method comprises the following steps: firstly, putting a base material into a reaction chamber of a plasma chamber, continuously vacuumizing the reaction chamber till the vacuum degree of the reaction chamber is 10-200 millitorrs, and inflating an inert gas or nitrogen gas; secondly, inflating first monomer steam, second monomer steam and third monomer steam at the same time; starting plasma discharge, and performing chemical vapor deposition; after discharge, turning off a plasma power supply, stopping inflation of the first monomer steam, the second monomer steam and the third monomer steam, continuously vacuumizing, inflating atmosphere till an atmospheric pressure after the vacuum degree of the reaction chamber is kept at 10-200 millitorrs for 1-5 min, and then taking out the base material. Through inflation of the first monomer steam, the second monomer steam and the third monomer steam at the same time, and through control over increase in the flows of the first monomer steam, the second monomer steam and the third monomer steam at different speeds, the prepared coating has gradient changing structural toughness and hardness, can reduce stress cracking and deformation, and has a relatively high barrier protection performance.

The invention relates to a ceramic grouting forming method and a mold thereof, and belongs to the technical field of material forming. An elastic material layer and a filtering film layer are sequentially laid on the inner surface of a porous panel, and after mold closing, pressurized grouting and pressure maintaining are conducted on a mold through a grouting opening; after pressure maintaining is completed, a grouting valve is closed, and drying, demolding and sintering are conducted. In the pressurized grouting and pressure maintaining process, the elastic material layer in the mold is pressed to elastically deform, and the elastic material layer rebounds after pressure is removed; inward compression force is evenly provided for a grouting blank, and uniform distribution and uniform density of the grouting blank are achieved; and therefore the blank is prevented from being layered or cracked. In the drying process, the elastic material can retain a part of moisture, the surface and the center of the blank are in a humidity balance state in the drying process, and the stress cracking phenomenon caused by different humidities of the surface and interior of the blank is reduced.

The invention discloses a water-based sound-absorbing heat-insulating fireproof coating and a preparation method thereof. The invention belongs to the technical field of indoor coatings. The coating is prepared from the following components in parts by mass: 20-35 parts of deionized water, 0.2-0.5 parts of a thickening agent A, 0.1-0.3 parts of a thickening agent B, 0.1-0.3 parts of a wetting agent, 0.3-0.8 parts of a dispersing agent, 0.4-0.6 parts of a defoamer, 3-5 parts of a coalescing agent, 0.1-0.3 parts of a pH value stabilizer, 1-2 parts of an anti-freezing agent, 20-30 parts of VAE emulsion, 10-15 parts of titanium dioxide, 5-10 parts of perlite, 15-20 parts of porous powder quartz, 0.6-1.2 parts of a leveling agent and 0.2-0.5 parts of a bactericidal mildew preventive. The product is non-toxic, harmless, low in cost, free of environmental pollution, high in covering power and excellent in heat insulation, sound absorption and fire prevention effects.