182results about How to "Not prone to scratches" patented technology

The invention discloses an aqueous grinding fluid applied to super precision grinding of hard and brittle materials and an application method thereof. The grinding liquid contains chelant 0.1-5, a pH value regulator 5-15, a suspending agent 0.2-5, a dispersion stabilizer 0.5-10, a lubricant 5-20, an antirusting agent 0.5-5, fungicide 0-2, a defoamer 0-2 and deionized water compensating the balance of total amount of 100 parts. Under an alkali condition, the aqueous grinding fluid applied to super precision grinding of hard and brittle materials is beneficial for grinding materials with various sizes, has good suspension property and dispersion stability; when the aqueous grinding fluid is used for super precision grinding of various different hard and brittle materials, especially high-hardness materials, scratches, etching pits and other defects are not produced easily; and the grinding speed is high, the subsequent cleaning is convenient; and the aqueous grinding fluid has excellent lubricating property and antirusting property when in matched use with the grinding materials, and the mixing liquid is uniform in color and has no sediment in 48 h. When the aqueous grinding fluid is used for grinding a wafer on a grinding machine, the ground wafer is subjected to water-added ultrasonic washing, and the wafer has good surface smooth finish, no scales, etching pits and other defects, and the surface roughness can be within 2 microns.

The invention discloses roasting type alkyd amino special steel drum paint and a preparation method thereof, and relates to the paint industry; alkyd resin, preformed gel and amino thinner are added into a container to be stirred at high speed; titanium dioxide is added in; the obtained paint paste is ground and dispersed by the pouring tray of the sander with dispersing and grinding grain size of below 15mm, and then poured into the large basin of the container; and then butanol, xylene, epoxy resin, n-butanol etherified melamine resin, adhesion promoting resin, interface activator and agent are added into to be stirred evenly, so as to obtain the qualified product of the invention finally.

The invention relates to a scratch resistant environmental low-smoke halogen-free flame resistant sheath material for a special optical cable. The sheath material comprises the following components by weight percent: 15-25% of ethylene-vinyl acetate copolymer, 5-10% of polyethylene, 5-10% of polyethylene elastomer, 45-60% of flame retardant, 5-10% of compatilizer, 0.5-2% of antiwear agent, 0.5-1.0% of lubricant and 0.1-0.5% of antioxidant. The material of the invention has no halogen, low pollution to the environment, good flame resistant performance, low smoke caused by burning and low irritation to human. The outer sheath of the cable prepared by the sheath material of the invention has excellent surface abrasion resistance and scratch resistant so that the surface of the outer sheath is not easy to scratch during construction and used processes and can maintain good appearance quality.

The invention belongs to a fast-curing casting resin for bathroom accessories and a preparing method and a using method thereof. In the fast-curing casting resin for the bathroom accessories, o-phenyl type unsaturated polyester resin is used as a matrix resin; and the fast-curing casting resin comprises the following materials in percentage by weight: 18 to 22 percent of o-phenyl type unsaturated polyester resin, 28 to 32 percent of 200-mesh calcium carbonate, 22 to 26 percent of 300-mesh calcium carbonate, 14 to 18 percent of quartz sand and 15 to 10 percent of white micro-bead. A small amount of additive is also added into the formula, and the additive comprises an accelerating agent, a low contraction agent and a curing agent, wherein the addition of the accelerating agent is 0.2 to 0.8 percent of the weight of the o-phenyl type unsaturated polyester resin, the addition of the low contraction agent is 1 to 1.1 percent of the weight of the o-phenyl type unsaturated polyester resin, and the addition of the curing agent is 1.6 to 2.2 percent of the weight of the o-phenyl type unsaturated polyester resin. The demolded semi-finished product of the casting resin does not need the steps of pressing and re-curing, so the energy consumption is greatly reduced. Meanwhile, the surface of the semi-finished product is hardly scratched, and at least 50 percent of labor can be saved.

The invention relates to a multi-purpose bone harvesting device, and aims to solve the problems such as poor effect of bone harvesting of the existing bone harvester. The device comprises a cylindrical body, a positioning rod and a bone harvesting shovel body, wherein the end part of the front end of the cylindrical body is provided with a plurality of serrate bodies which are circumferentially distributed; the rear end of the cylindrical body is provided with a torsion mechanism; the cylindrical body is provided with a central passage which axially runs through and in which the positioning rod and the bone harvesting shovel body can be inserted respectively; the front end of the positioning rod is provided with a positioning conical tip which is exposed out of the front end of the cylindrical body when the positioning rod is inserted into the central passage; the rear end of the positioning rod is provided with a stress part for bearing an external acting force; the bone harvesting shovel body comprises a rod body and a shovel head which is arranged at the front end of the rod body and is provided with a bone storage part. The device has the advantages that the sawing effect is good, the bone harvester can be positioned, skidding phenomenon is not caused easily during sawing, the surface of ilium is not scratched easily, the bone harvesting effect is good, the sawed bone can be quickly cut off from the ilium body and taken out, and multiple bone harvesting processes are realized without drawing out the cylindrical body.

The invention relates to the technical field of materials, particularly to a high-toughness and high-hardness composite material and a preparation method thereof, wherein the high-toughness and high-hardness composite material comprises the following raw materials by weight: 80-90 parts of polycarbonate, 20-35 parts of polymethyl methacrylate, 15-20 parts of a reinforcing filler, 15-30 parts of atoughening modifier, 5-8 parts of a lubricant, 5-10 parts of a compatibilizer, and 3-7 parts of a coupling agent, wherein the reinforcing filler is a mixture of hollow glass microspheres and nanometerboron fibers, and the toughening modifier is a mixture of a styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride, such that the toughness and the hardnessof the PC-PMMA composite material can be simultaneously increased, the impact resistance and the tensile strength of the PC-PMMA composite material can be increased, the wear resistance is good, the scratch is not easily generated on surface of the product, the fluidity is high, and the processing molding is easy.

The invention provides a high-strength and high-toughness ceramic material, which is prepared from the following raw materials: zirconite, kaoline, a fibrous material, silicon carbide, titanium dioxide, a composite admixture, aluminum nitride, calcium carbonate, a toughening agent, a foam stabilizer, acetate and a cosolvent. The high-strength and high-toughness ceramic material provided by the invention has good bending strength, fracture toughness and impact resistance, and is excellent in thermal stability and corrosion resistance; the high-strength and high-toughness ceramic material also has excellent high temperature resistance and thermal shock resistance, so that alumina titanate ceramics can be used in practical applications; therefore, the high-strength and high-toughness ceramic material can be widely applied to industrial production.

The invention relates to an anti-scrape rolling guide groove. The groove comprises a rolling body device and a slide guide groove, wherein the slide guide groove is formed in the side of the rolling body device; the rolling body device comprises a lower guide roller base; a lower guide roll is arranged in the lower guide roller base; a left guide roll base and a right guide roll base are arranged behind the lower guide roller base; and the left side and the right side of the left guide roll and the right guide roll are respectively provided with a left guide roll and a right guide roll. The guide groove is of a box body structure and is provided with a guide roll rolling body, when a rolling component passes through the interior of the guide groove, the guide rolls play a role of clamping the rolling component, and the rolling component is not easy to vibrate and is high in stability. The groove is suitable for rolling a high-added value linear product and can protect the surface of the rolling component, the phenomena of scraping steel and sticking steel are avoided, and the surface of the rolling component is not scraped. The anti-scrape rolling guide groove is obvious in effect, high in practicability, simple in structure, simple and convenient in operation and low in cost, and the operation efficiency is improved.

The invention relates to a three-component alloy plating material for coated steel products with high corrosion resistance and the manufacturing method thereof. The three-component alloy is composed of Zn, Al, Si or a rare earth element. The plating material further contains a trace element as additive, wherein the trace element is selected from Fe, B, Pb, Mn, Ca, Cu, Sb, Sn, Ni, Bi, Ti, or a combination thereof; and the total amount of the trace element is below 0.5 percent. The manufacturing method is also disclosed, which comprises compounding the components at the given ratio, smelting in a smelting furnace at a smelting temperature of 750-800 DEG C, stirring in a non-contact manner, refining, slagging off, and casting to obtain an alloy ingot. The inventive coated steel product has high corrosion resistance, excellent fatigue resistance and strong ability of binding with matrix metals; and is widely used in the industries of household electronic appliances, construction materials and automobiles.

The invention relates to a modified material of a color profile material, in particular to an ASA (acrylonitrile-styrene-acrylate) modified material, which solves the problems that: because of the scratches and the strias, the chromatic aberration and matt surface are always generated during the preparation of color profile material by ASA resin. According to the mass ratio, the ASA modified material comprises: 40 to 60 portions ASA resin, 0.15 to 0.25 portions light stabilizer, 0.15 to 0.25 portion ultraviolet adsorbent, 4 to 5 portions dispersing agent, 4 to 5 portions lubricant, 5 to 15 portions reinforcer, 5 to 15 portions upgrading nucleating agent, 0.1 to 0.3 portions coupling agent and 1 to 5 portions color pigment. The modified material of a color profile material has the advantages that: based on the performance of good color pigment, rich colors and favorable weatherability of the prior art, the ASA modified material prepared has higher toughness, rigidity and intensity; meanwhile, ASA modified material can be exposed in the conditions with ultraviolet, wet air, rain, lighting and ozone for long time; furthermore, the color profile material prepared has uniform colors, favorable glossiness of the surface without chromatic aberration.

The invention discloses an LED display screen, which is provided with a lamp face. A protection resin layer and an elastic resin layer are sequentially arranged on the lamp face of the LED display screen, and the protection resin layer is located between the elastic resin layer and the lamp face. According to the LED display screen, the properties such as water prevention, dust prevention and impact prevention of the lamp face of the LED display screen can be improved through the protection resin layer, the properties of scratching resistance and edge breakage resistance of the protection resin layer can further be improved through the elastic resin layer, and thus the lamp face of the LED display screen is not prone to the phenomena of scratching and edge breakage; by arranging the protection resin layer and the elastic resin layer simultaneously and meanwhile retaining an original protection resin layer to protect lamp beads against being damaged by external force, the problems of scratching, edge breakage and the like of the surface of a current glue filling LED display screen can be effectively solved; and meanwhile, the high-toughness elastic resin layer on the outermost layerfurther has certain elasticity, external impact can be effectively buffered, and thus the lamp face of the LED display screen is good in impact-resistance strength.

The making process of rod body for fishing rod includes winding one polymer material layer without superposing outside one compound material layer; spraying one extinction material layer to the surface of the polymer material layer; winding one layer of combining material of smelting point lower than that of the polymer material layer with partial superposing to the extinction material layer; sintering to form rod body core in complex layered structure; removing the rod body core from one mandrel and peeling off the combining material layer to form the rod body for fishing rod.

The invention relates to a high-toughness and impact-resistant resin eyeglass and a preparation method thereof; the resin eyeglass comprises the raw materials in parts by weight: 20-25 parts of dimethyl 1,4-benzenedicarboxylate, 20-25 parts of dimethyl 1,3-benzenedicarboxylate, 3-5 parts of allyl alcohol, 12-15 parts of an allyl ether phenolic resin, 12-15 parts of pentaerythritol tetrakis(2-mercaptoacetate), 8-10 parts of hexamethylene-1,6-diisocyanate, 8-10 parts of bismaleimide, 1.5-3 parts of a wear-resisting agent, 0.5-1.5 parts of a catalyst, and 0.5-1.5 parts of an internal mold release agent. While the resin eyeglass is ensured to have excellent refractive index, the chemical resistance is allowed to be greatly improved, the toughness and impact resistance of the prepared resin eyeglass can be greatly improved, scratches and a breaking phenomenon are not easily generated, and the service life is facilitated to be greatly extended.

The invention relates to ABS (Acrylonitrile Butadiene Styrene) modified resin with high hardness, flame retardance and antistatic property. The ABS modified resin comprises the following components of ABS resin, aromatic polyimide fibers, diazo diphenylamine paraformaldehyde condensation product, a polyisocyanate block, silicone-modified polyurethane resin, 6-ethyoxyl-2,2,4-trimethyl-1,2-dihydroquinoline, styryl pyridine dimethyl sulfate salts, isobutyraldehyde, a curing agent, dimethoxy dipropylene glycol, polyvinyl butanol, an antistatic agent, zinc ferrite, 4-tert-Butylcyclohexanone, cyclododecanone, barium sulfate, 1,2,3,4-cyclopentanetetracarboxylic acid and deionized water. The ABS modified resin disclosed by the invention has the characteristics of high hardness, flame retardance and antistatic property.

The invention discloses a nano-material modified thermal insulation interior wall coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 30-50 parts of acrylic emulsion, 2-4 parts of titanium dioxide, 3-5 parts of an enhancement solution, 0.3-0.5 part of a defoaming agent, 0.5-2 parts of a dispersing agent, 1-3 parts of a film-forming agent and 20-30 parts of water. The enhancement solution is prepared in the preparation process, the enhancement solution can also have a large amount of long-chain alkyl, the long-chain alkyl has a good hydrophobic effect, after the coating forms a coating film, the surface of the coating film has a good hydrophobic effect, meanwhile, the coating film is more convenient to clean, meanwhile, the coating film contains macromolecular chains and has good corrosion resistance, the internal rotation barrier energy of the molecular chain is low, and the molecular chain segment is easy to rotate, so that the toughness of the dried coating film is higher, the coating film is not easy to scratch, and the attractiveness of the coating film is ensured.

The invention discloses a novel environmentally-friendly wood-plastic floor material and a preparation method thereof, and relates to the technical field of coatings. The material comprises, by weight, 15-25 parts of polyacrylic resin, 12-20 parts of polyamide resin, 20-35 parts of vegetable fibers, 8-13 parts of ceramic fibers, 5-12 parts of seashell powder, 7-15 parts of diatomaceous earth, 4-10parts of glass beads, 5-12 parts of expanded perlite, 10-18 parts of silica gel particles, 4-9 parts of nanometer titanium dioxide, 3-7 parts of nanometer magnesium oxide, 2-5 parts of nanometer molybdenum oxide, 2-5 parts of nanometer titanium nitride, 3-7 parts of peppermint essential oil, 4-7 parts of activated carbon, 5-10 parts of a plant regulator, 1.3-2.5 parts of a foaming agent, 2.4-3.8parts of a flame retardant, 1.4-2.6 parts of a plasticizer, 1.8-3.2 parts of an anti-aging agent and 30-45 parts of a 25 wt% ethanol solution. The material has the advantages of good aging resistance,no formaldehyde substances, greenness and environmental protection.

The invention provides a high-hardness and high-toughness metal ceramic composition and a preparation method thereof. The high-hardness and high-toughness metal ceramic composition comprises the following raw material components in percentage by weight: 40-70 percent of titanium carbide, 10-30 percent of tungsten carbide, 1-5 percent of tantalous carbide, 3-5 percent of chromium carbide, 10-20 percent of cobalt and 5-10 percent of molybdenum. The preparation method of the high-hardness and high-toughness metal ceramic composition comprises the following steps of: 1, providing raw materials; 2, performing ball milling and stirring on each raw material component to obtain powder particles; 3, molding under a high pressure; 4, removing an adhesive and degreasing; and 5, sintering in vacuum at a high temperature. The high-hardness and high-toughness metal ceramic composition is prepared by adopting titanium carbide, tungsten carbide, tantalous carbide, chromium carbide, cobalt and molybdenum, has high hardness, high toughness and high corrosion resistance, is prevented from being broken and scratched, and is non-irritant to human bodies.