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67results about How to "No whitening" patented technology

Water exterior wall paint and its preparing process

InactiveCN101121841AOvercome crackingOvercome blisteringEmulsion paintsComposite filmPliability
The invention relates to a water fluorocarbon paint for external-wall painting, comprising solvent (water), water fluorocarbon latex, filler, composite film-forming auxiliary agent, disperser, moistening agent, leveling agent, thickening agent and germicidal agent. In the paint, solvent (water) covers 5 to 15 percent, water fluorocarbon latex covers 40 to 70 percent, composite film-forming auxiliary agent covers 5 to 14 percent, rutile titanium pigment covers 10 to 25 percent, talc powder covers 5 to 10 percent, disperser covers 0.1 to 0.5 percent, moistening agent covers 0.001 to 0.003 percent, leveling agent covers 0.004 to 0.01 percent, thickening agent covers 1 to 1.8 percent, and antifoaming agent covers 0.01 to 0.05 percent. The invention provides an efficient novel water fluorocarbon paint for external-wall painting by changing fillers and increasing the dose of composite film-forming auxiliary agent. The preparation process is simple, the paint is free of dehiscence, spurging and whitening; the painted wall-surface is smooth, and the light and color are well reserved; the paint has sound flexibility, weathering resistance, corrosion resistance, heat/cold resistance, acid/alkali resistance and better film-forming performance; the paint is environment-friendly, low-cost and construction friendly; and the prospect of development is very bright.
Owner:JIANGSU UNIV OF SCI & TECH

Bright and injection-molding wood plastic composite and method for preparing the same

The invention discloses a bright and injection-molding wood plastic composite and method for preparing the same and belongs to a wood plastic composite and a method for preparing the same. The wood plastic composite comprises the following components in percentage by mass: 50 to 70 percent of renewable PP or HDPE, 30 to 50 percent of wood powder, 5.0 to 10.0 percent of nanometer absorbent, 5.0 to 10.0 percent of surfactant, 1.0 to 2.0 percent of super lubricant, 1.0 to 2.0 percent of titanate coupling agent, 0.5 to 5.0 percent of polyethylene wax, 2.0 to 5.0 percent of stearic acid or stearate, and 5.0 to 15 percent of maleic anhydride-grafted PE or PP grafted with a molecular weight of between 5,000 and 30,000. The wood powder and the nanometer absorbent are mixed at a high rotation speed of 1,500 to 2,500 r / m for 10 to 15 minutes, then the titanate coupling agent is added and mixed at a high rotation speed of 1,500 to 2,500 r / m for 5 to 6 minutes, and finally other components are added to be mixed at a rotation speed of 1,500 to 2,500 r / m for 20 to 30 minutes and then mixed at a rotation speed of 300 to 600 r / m for 5 to 10 minutes so as to obtain the premix. The premix is extruded and pelletized by an extruder to obtain the bright and plastic injection wood plastic composite. The wood plastic composite has the advantages of high surface glossiness, excellent high-temperature flow performance, high strength and toughness, low cost and the like, can widely substitute plastics and is used for production of products with complex shapes.
Owner:JIANGSU HENGFAMU PLASTIC SCI & TECH

Method for processing nylon internal polygon and special cutter thereof

The present invention relates to a method for processing a nylon internal polygon. All surfaces of an internal polygonal hole are orderly cut by common machine processing equipment and a special cutter. The cutting output of a part is from 0.02mm to 0.05mm during the cutting. After one face is cut, an indexing head is rotated for 360 degrees per Newton, the next face of the part is cut, and the other faces of the polygon are processed in the mode. The cutter is a straight handle type or a conic handle type, the width of a cutting edge is equal to the side length of the internal polygon, and a chip removal angle is arranged between the front cutter face and the rear cutter face of the cutter. A front cutter angle (3) is from 8 degrees to 12 degrees. The front angle (4) of a rear cutter angle is from 6 degrees to 10 degrees, and the rear angle (5) is from 9 degrees to 15 degrees. When a part of the internal polygon processed by the method is cut to the internal square root part, the phenomena of whitening part, chip adherence to the cutter, fracture failure, etc due to large cutting quantity and heated materials are avoided. The surfaces of internal square hole are smooth. The present invention has the advantages of high operability, high practicability, low manufacture cost and good product quality.
Owner:XIAN AIRCRAFT IND GROUP

Anti-corrosion and anti-abrasion coating for power generator blade and preparation method thereof

The invention discloses an anti-corrosion and anti-abrasion coating for a power generator blade and a preparation method thereof. The anti-corrosion and anti-abrasion coating is prepared from the following components in parts by weight: 30 to 40 parts of epoxy resin, 12 to 20 parts of organic silicon resin, 5 to 10 parts of graphite powder, 3 to 7 parts of mica powder, 4 to 8 parts of hydroxy propyl methyl cellulose, 5 to 12 parts of nanometer silicon dioxide, 7 to 16 parts of anti-abrasion filler, 1 to 5 parts of preservative, 1 to 3 parts of curing agent, 0.4 to 1.4 parts of flattening agent, 0.2 to 0.6 part of dispersant, and 20 to 30 parts of solvent. The anti-corrosion and anti-abrasion coating has the advantages that the anti-corrosion and high temperature-resistant properties are realized; the anti-abrasion property is good, the adhering strength is excellent, the dielectric property is good, the size stability of the product is good, the hardness is high, the flexibility is better, and the stability to alkaline and most of solvents is realized; the anti-corrosion, air-blocking and water-blocking properties are good, the service life is long, and the problems of foaming, cracking, whitening, delaminating and the like are solved.
Owner:HEFEI SHANGQIANG ELECTRIC TECH CO LTD

Preparation and application of polyurea extinction microspheres with light scattering characteristic

The invention discloses preparation and application of polyurea extinction microspheres with light scattering characteristics, and the preparation of the extinction microspheres comprises the following raw material components in parts by weight: 100 parts of an acetonitrile/water mixed solvent, 1-10 parts of a monomer, 0.1-1 part of a hydrophilic monomer and 0.1-4 parts of a surface roughening agent, the polyurea microspheres with different particle sizes and surface roughness are prepared in a water/acetonitrile system through a precipitation polymerization method, the polyurea microspheres are used as a water-based coating matting auxiliary agent, the particle sizes and the surface roughness of the polyurea microspheres are controlled by adjusting the dosage of MPDSA-Na, the dosage of IPDI, the dosage of SiO2 and the like, and then the glossiness of the coating is adjusted. The polyurea microspheres and waterborne polyurethane are compounded to be used for coating surface glossiness treatment, the glossiness of the surfaces of coatings such as synthetic leather can be remarkably reduced, the particle size distribution ranges from 1 micrometer to 2 micrometers, and the polyurea microspheres high in surface roughness have a better matting effect. Therefore, the polyurea extinction microsphere with the light scattering characteristic has a wide application prospect in coatings of automotive trim leather and furniture decorative leather.
Owner:SICHUAN UNIV

Wear-resistant and scratch-resistant coating and preparation method thereof

The invention discloses a wear-resistant and scratch-resistant coating and a preparation method thereof, and belongs to the technical field of wear-resistant coatings. According to the wear-resistantand scratch-resistant coating and the preparation method thereof, the wear-resistant and scratch-resistant coating is formed by uniformly coating a wear-resistant and scratch-resistant coating on a composite film and curing the wear-resistant and scratch-resistant coating, the wear-resistant and scratch-resistant coating is prepared from the following components: polyvinyl acetal modified phenolicresin, polyacrylic acid vinyl ester emulsion, composite rare earth, nano aluminum powder, nano calcium oxide, ceramic powder, a flame retardant and the like. The wear-resistant and scratch-resistantcoating disclosed by the invention has excellent bonding strength; the wear-resistant and scratch-resistant coating has the advantages of favorable dielectric properties, favorable product dimensionalstability, high hardness, favorable flexibility, high stability for alkali and most solvents, favorable corrosion resistance, favorable gas resistance, favorable water resistance, favorable flame retardancy and the like, and has long service life, and the wear-resistant and scratch-resistant coating obtained by coating the wear-resistant and scratch-resistant coating can not have the problems ofblistering, cracking, whitening, delaminating and the like. The preparation method is simple, and large-batch and large-scale production is easy to carry out.
Owner:YIXING YULONG PLASTIC PACKAGE PROD
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