33 results about "Scratch hardness" patented technology

A window for a display device including a plastic substrate including a poly(imide-amide) copolymer and a hard-coating layer disposed on at least one side of the plastic substrate, wherein the plastic substrate has pencil scratch hardness of greater than or equal to about 3H under a vertical load of about 1 kilogram according to ASTM D3363 and a yellow index (YI) of less than or equal to 3 according to ASTM E313.

This invention relates to Richter hardness basic device, which comprises the following: base socket on the workbench; impact part with tungsten carbide ball head; guiding cylinder to control the impact part radium direction; impact part lift clamper structure; control device; speed test device and data collection device, wherein the impact part gets energy form the gravity and the speed test device adopts the laser Doppler speed test system.

The invention discloses an automotive waterborne floating-coat coating and a preparation method thereof. The automotive waterborne floating-coat coating is characterized by comprising a component A and a component B, wherein the component A comprises the following components in percentage by weight: 15%-35% of polyester resin, 25%-35% of epoxy resin, 15%-25% of a pigment, 3%-5% of talcum powder, 15%-25% of calcium carbonate, 0.1%-0.5% of a polyurethane defoaming agent, 0.3%-0.8% of etherified amino resin, 0.1%-0.5% of a fumed silica anti-settling agent, 0.1%-0.5% of a flatting agent, 0.5%-1.5% of a wetting agent, 1%-2% of a flash-rust inhibitor and the balance of deionized water; and the component B is a closed waterborne isocyanate curing agent. After an electro-deposition coating plate is coated with the automotive waterborne floating-coat coating and dried, a paint film presents an excellent smooth form, a paint film stripping phenomenon is not observed during adhesiveness testing of the paint film, and the hardness, tested by virtue of a pencil scratch hardness method, of the paint film is an level F or above.

The invention provides a resin laminate having relatively high surface hardness and high transparency. The resin laminate has a hard resin layer and a substrate layer. The hard resin layer is formed by a curing resin composition with multi-functional (methyl)acryloyl monomers as an essential ingredient, has a three-dimensional cross-linking structure and a thickness of 25 [mu]m-250[mu]m. The substrate layer is formed by a monolayer thermoplastic resin or two or more layers of a multi-layer thermoplastic resin. An independent tensile elasticity modulus of the hard resin layer is 2.000-4,000 MPa; and a total light transmittance is over 90%. Besides, a ratio (t1/t2) of a total thickness (t1) of the substrate layer to the thickness (t2) of the hard resin layer is 0.25-10; and a scratch hardness of the resin laminate is over 40 g.

A coating composition is taught which 1) is essentially free of matting agents, 2) includes a two-package curing type acrylic urethane base resin that can form a coating film, which has a surface scratch hardness of 2H and a predetermined light transmittancy, and 3) includes 0.1% to 1.5% by weight of transparent particles having an average particle size of 5 μm to 30 μm. The coating film formed by the coating composition has a surface scratch resistance by means of the two-package curing type acrylic urethane, and is prevented from regular reflections generating images therearound by means of the transparent particles having an average particle size of 5 μm to 30 μm.

The invention relates to a scratch hardness test method. The test method comprises specific steps as follows: (1), a to-be-tested sample is cleaned and dried; (2), the to-be-tested sample is fixed on a base of a tester, a contact probe provided with a pressure head is fixed on a fixture of the tester, the direction of the contact probe is adjusted, and accordingly, the pressure head is perpendicular to the surface of the to-be-tested sample; (3), pressure P and a scratch speed of the pressure head on the surface of the to-be-tested sample are set through the tester; (4), a power supply is switched on, and a scratch test is performed; (5), after the scratch test ends, widths of 3-5 scratches on the surface of the to-be-tested sample are measured, and the average value W of the widths of the scratches is taken; (6), a scratch hardness value is calculated according to the average value W of the scratch widths and the pressure P. Compared with the prior art, the test method is simple and convenient to operate; the spherical pressure head is adopted for the test, difficulty for scratch measurement and errors of calculation of scratch hardness values can be reduced, the test accuracy is high, and the scratch hardness test method is economical and practical and has good universality.

A distributor or transfer roller is provided for printing machines, in particular for offset printing machines. The roller has at least a substantially rigid core and a cover made of a polymeric material applied on and permanently fixed to the core. The cover is applied directly on the core or on a hard-elastic intermediate layer having a hardness of ≧10 Shore D, optionally by an adhesion promoting layer. The cover is at least substantially made of a fluorinated polymer and has a hardness of ≧15 Shore D and/or a scratch hardness according to ISO 15184 of 6B or harder. The polymeric material can be a duroplastic material, a fluorinated polyurethane resin, polyester resin, epoxy resin, acrylate resin and/or polyether resin, a highly cross-linked non-elastic fluoropolymer, a fluorothermoplastic, a polymeric non-elastic fluorosilicone, or a fluoropolymer lacquer.

The invention discloses bright sinking ink which comprises the following raw materials in percentage by mass: 25-45% of a sinking agent, 15-20% of a brightening agent, 1-3% of a dispersing agent and 30-70% of a solvent. Tests show that the bright sinking ink meets technical index requirements of a national standard GB/T 4100-2006 Ceramic Tile and national standards GB6566-2010 Radioactive Nuclide Limit for Building Material, HJ/T 297-2006 Technical Requirement for Environmental Labeling Products Ceramics Tiles and EN 101: 1992 Vitreous and Porcelain Enamels-Determination of Surface Scratch Hardness According to the Mohs Scale, and meanwhile has excellent sinking effects and good surface gloss.

Provided is a flexible wiring board having high durability. The present invention provides a flexible wiring board including a flexible substrate and a conductive film formed on the flexible substrate. The conductive film contains a conductive powder and a curd product of a heat curable resin. The conductive film has pencil hardness of at least 2H, based on a pencil scratch hardness test in accordance with JIS K5600 5-4 (1999). The conductive film has adhesiveness of at least 95/100 by a 100 squares cross-cut test in accordance with JIS K5400 (1990).

The invention provides a resin laminate having relatively high surface hardness and high transparency. The resin laminate has a hard resin layer and a substrate layer. The hard resin layer is formed by a curing resin composition with multi-functional(methyl)acryloyl monomers as an essential ingredient, has a three-dimensional cross-linking structure and a thickness of 25 [mu]m-250[mu]m. The substrate layer is formed by a monolayer thermoplastic resin or two or more layers of a multi-layer thermoplastic resin. An independent tensile elasticity modulus of the hard resin layer is 2.000-4,000 MPa; and a total light transmittance is over 90%. Besides, a ratio (t1/t2) of a total thickness (t1) of the substrate layer to the thickness (t2) of the hard resin layer is 0.25-10; and a Bierbaum scratch hardness of the resin laminate is 20 kg/mm<2>-700 kg/mm<2>.

The present invention is a kind of utensil with ink pigment layer painted onto one single or three coatings and its coating forming process. The utensil has raised scratch hardness, raised wear resistance, raised production efficiency, raised cooking performance and improved appearance. Onto the single ceramic coating or the three coatings, ink pigment is sprayed to form discontinuous spots and irregular uneven patterns.

A printing sheet that is capable of imparting a feeling of depth and a three-dimensional feeling to a printed image, and is capable of withstanding a strong stress at the time of applying a makeup onto the printed image. The printing sheet comprises a base sheet and an inorganic solid layer provided on the base sheet, a surface of the inorganic solid layer having a scratch hardness of not less than H as measured by the pencil hardness test specified under the JIS K 5600-5-4 and, further, the surface of the inorganic solid layer being a rough surface having an arithmetic mean roughness (Ra) specified under the JIS B 0601-2001 of 4 to 10 μm and a mean length (RSm) of elements specified under the JIS B 0601-2001 of 50 to 150 μm.

The invention relates to a composition for making a drilling fluid a non-invasive drilling fluid, the composition comprising: a first component comprising particles having a scratch hardness above 2 Mohs; and a second component comprising particles selected from the group of frag-mented seeds of Tamarindus indica, comminuted bark from Litsea glutinosa, or comminuted Ocimum tenuiflorum. The invention further relates to a non-invasive drilling fluid comprising the composition, and a method for drilling a wellbore.

The invention discloses an organic carrier for aluminum paste on back of a solar crystalline silicon cell and a preparation method of the organic carrier. The organic carrier comprises the following components in percentage by mass: 86-90.4% of an organic solvent, 3.2-5% of a surfactant, 2-4.5% of ethyecellulose, 1-7% of cellulose acetate butyrate and 3.4-5% of phenolic aldehyde or aldehyde resin,totaling 100%. The aluminum paste prepared by using the organic carrier disclosed by the invention has excellent thixotropy, the aluminum paste standing for a long time is not layered or settled, hasexcellent bearing capacity on powder, has a uniform coating property during printing, is stable in continuous printing, and has excellent bonding strength and scratch hardness after drying. The sintered crystalline silicon cell has small deformation, the adhesive force at the overlap joint of the back aluminum paste and back silver paste is excellent, the adhesive force between the back aluminumpaste and the crystalline silicon cell is excellent, and whitening and cracking phenomena do not occur on the edge.

The invention provides a liquid heating container comprising a container body, a heating assembly and a coating; the container body has a contain cavity used for containing liquid; the heating assembly is used for heating up the liquid in the contain cavity; the coating is formed on the inner wall of the container body, the coating surface scratch hardness is h, and the heat conduction coefficient is [lambda]. The ratio between coating surface scratch hardness h and the heat conduction coefficient [lambda] is between 0.1(m.k).H/W and 45(m.k).H/W, thus ensuring the coating to be wear resistant and durable; the coating is good in heat conduction effect, thus improving the product heating efficiency.

The invention discloses a ceramic filter purifying material which comprises main materials and auxiliary materials. The main materials are kaolin, the mixing amount of the kaolin is 20%-80% in weight percentage, the auxiliary materials comprise tourmaline, radium stones, rare earth, crystal quartz, clay, powdered borax, foaming agents, catalysts, cocoanut active charcoal, titanium oxide and zirconium oxide, and total mixing amount of the auxiliary materials is 20%-80% in weight percentage, filtering holes with irregular hole diameters are uniformly formed in the inside and the outer surface of the ceramic filter purifying material, the diameter of each filtering hole ranges from 0.01 micrometer (10 nanometers) to 500 micrometers (0.5 millimeter), the volume of each filtering hole is 0.02-1.5cm<3>/g, surface scratch hardness reaches grade 6, compression-resistant hardness is 100-170kg/cm<2>, the weight is 0.09-0.21g/cm<3>, the hole diameter of one side is large, and the hole diameter of the opposite side is small, so that a conical structure is formed. The preparation method of the materials includes the steps: grinding the main materials and the auxiliary materials, screening the grinded mixture by the aid of a 100-150-mesh sieve, and grinding parts of materials to form particles with the diameter ranging from 1 to 3 micrometers; firing and simultaneously mixing the mixture at the temperature ranging from 60 DEG C to 80 DEG C; performing pressing formation; firing clay at the temperature ranging from 800 DEG C to 1300 DEG C to form ceramic products. The ceramic filter purifying material is high in hardness, environmentally friendly, healthy and reusable.