93results about How to "Strong dimensional stability" patented technology

The invention relates to a preparation method of a rigid structure reinforced phenolic aerogel heat shielding material. The method includes: firstly dissolving phenolic resin in a solvent in a vacuum impregnation container to form a phenolic solution, then pressing a three-dimensional fiber structure into the phenolic resin solution, and conducting vacuum pumping on the vacuum impregnation container, after a period of time, opening a seal cover to maintain smooth air pressure with the outside and conducting standing for a period of time, then taking out the three-dimensional fiber structure and putting it into an oven to perform drying, and conducting high temperature curing to form a rigid three-dimensional fiber structure, then mixing resorcinol, furfural, ethanol and sodium hydroxide uniformly in proportion in the vacuum impregnation container to form a reactant solution, then pressing the rigid three-dimensional fiber structure into the solution, conducting vacuum pumping on the vacuum impregnation container again, maintaining the state for a period of time, then placing the vacuum impregnation container into the oven to carry out sol-gel process, and finally taking out the gel-containing three-dimensional fiber structure and performing drying, thus obtaining the rigid structure reinforced phenolic aerogel product.

The invention relates to a method for synthesizing polyimide precursor polymer resin and a method for manufacturing single-sided flexible copper-clad plates, which are applied to the technical field of microelectronics. An adhesive-free single-sided flexible copper-clad plate is obtained by the steps of: dissolving a monomer aromatic diamine in a non-proton polar solvent, stirring for dissolution, adding a silane coupling agent, stirring, adding an aromatic dianhydride monomer for polymerization to generate a polyimide precursor polymer resin solution, reacting and standing for defoaming; andcoating resin on a copper foil, pre-baking in an oven, removing the solvent, and heating in a gradient way in the high-temperature non-oxidation over (importing with nitrogen) so as to carry out complete imidization. The single-sided flexible copper-clad plate has the advantages that the heat resistance is good, the dimensional stability is strong, a substrate is thin, the peel strength is not less than 1.1kgf/cm, the polyimide resin is smooth and level after total etching, the elongation percentage is not less than 35%, the tensile strength is not less than 250MPa, the heat resistant temperature Tg of a polyimide insulation layer is not less than 328DEG C, and meanwhile, the plate has lower heat expansion coefficient, dielectric constant and water absorption rate.

The invention relates to a composite carbon-based floor and a production method of the floor; a raw wood is sliced by a vertical veneer slicer into a veneer for manufacturing a base plate, a core plate and a secondary surface veneer of a substrate and a veneer for manufacturing a surface veneer; the base plate, the core plate, the secondary surface veneer and the veneer to be carbonized are subjected to high temperature carbonization treatment, the carbonized base plate, veneer and secondary surface veneer are bonded with a surface wooden veneer or a surface carbonized veneer by glue, or the carbonized base plate, the carbonized core plate veneer and the surface carbonized veneer or the surface wooden veneer are bonded by glue, so as to obtain the floor. The composite carbon-based floor has very high weather resistance and size stability, is green, nontoxic, insect-resistant and anticorrosive, long in service life, and free from limit of amplitude width. The floor is suitable for terrestrial heat condition of cold areas and does not deform and crack. The composite carbon-based floor production method has the advantages of low material consumption, low energy consumption, low cost, and small pollution.

A high-strength refractory Al alloy with high strength, size stability and resistance to high temp (350-400 deg.C) and wearing contains proportionally Si, Cu, Ni, Mn, Mg, Ti, B, Zr, Cd, P and Al. It features that it contains the uniformly distributed Al3X particles with LI2 crystal structure and TiB2 particles with hcc crystal structure.

The invention discloses an injection molding method for a soft surface and stitch lines of an automotive door interior trimming panel. The method comprises the following three steps: 1 surface premolding; 2 finishing adding of real stitch lines to complicated shapes of curved surfaces and the like through 3D stitching on the surface; and 3 carrying out injection molding through a low-pressure injection molding mold to finish the injected automotive interior with the surface with target grains and the stitch lines. Products produced by the injection molding method are uniform in size, can be seamlessly lapped with matched parts, and are high in size stability, relatively small in internal stress, and not easy to deform; the stitch lines can be added to the curved surfaces and complicated surfaces; and the model of the automotive door interior trimming panel is beautified.

The invention discloses a preparation method of Pickering emulsion by utilizing prolamin loaded eucommia ulmoides chlorogenic acid. The unique solubility and self-assembly characteristic of prolamin are utilized, composite nanoparticles of prolamin loaded chlorogenic acid are prepared by adopting an anti-solvent method, and the Pickering emulsion is further prepared. The preparation method is simple in operation, small in the dosage of an emulsifier, low in cost, and environment-friendly; the prepared Pickering emulsion is uniform in particle size distribution, free of surfactants, low in toxicity and obvious in biological activity; alcohol-soluble nano-particles form a compact interface layer on an oil-water interface, so that the Pickering emulsion is high in stability and biocompatibility and is degradable, and polysaccharide-based particles are high in spatial stability and can resist flocculation and coagulation phenomena, so that the stability of the Pickering emulsion can be further improved, the solubility and stability of chlorogenic acid can be obviously improved, and the bioavailability of chlorogenic acid can be improved.

The invention relates to a method for manufacturing the blank body of a silicon carbide space reflecting mirror with super large size, as well as the application thereof. In the prior art, in order to obtain sufficient specific rigidity, the weight is rapidly increased when traditional optical materials, for example, optical glass is adopted for producing a large-size optical element, and the imaging quality rapidly drops, thus traditional optical materials with the optical glass as the representative is no longer suitable for the requirement on the development of space optics, and a novel product is required to replace the traditional optical materials. The method adopts the following steps: the appearance and the size of the reflecting mirror are designed optimally; the reflecting mirror with super large size is divided into small-size blank drawings; dies are manufactured and pulp is prepared through a computer and a numerical control processing apparatus; casting is carried out; the blanks are manufactured through the reactive sintering method; the blanks are processed; and then all the blanks are connected together and trimmed by adopting the braze welding method. The method is used for manufacturing the blank body of the silicon carbide space reflecting mirror with super large size.

The invention discloses a preparation method of a cross-linked polyfluorene piperidine anion exchange membrane. The method comprises the following steps: dissolving 9,9-dimethyl fluorene, N-methyl piperidone and trifluoroacetone in dichloromethane to obtain a homogeneous solution, adding trifluoroacetic acid and trifluoromethanesulfonic acid as catalysts, performing reacting for 24-36 hours at 0-10 DEG C in a nitrogen atmosphere, performing precipitating with a K2CO3 aqueous solution, and performing washing with deionized water to obtain light yellow solid polyfluorene piperidine polymer powder; dissolving the obtained polyfluorene piperidine and iodomethane in chloroform, performing heating and refluxing for 24-36 hours under a dark condition and a nitrogen atmosphere, then pouring a reaction solution into diethyl ether to precipitate, and performing washing with deionized water to obtain a quaternized polyfluorene piperidine polymer; and dissolving the obtained solution in dimethyl sulfoxide, adding a brominated amino siloxane cross-linking agent solution, performing reacting for 12-24 hours at 50-60 DEG C, adding iodomethane, performing reacting for 24-48 hours at 30-40 DEG C in a dark nitrogen atmosphere, adding ethanol, performing standing for 24-36 hours at room temperature, performing standing for 12-24 hours at 80 DEG C, standing for 3-6 hours at 100 DEG C, and performing standing for 1-3 hours at 120 DEG C to obtain the cross-linking type polyfluorene piperidine anion exchange membrane.

The invention discloses a laser cutting die processing method and particularly discloses a processing method for a laminated composite cutting die plate. The processing method comprises the steps of rotary cutting for obtaining a veneer, grinding the veneer in a beveled way, splicing the veneer in a beveled way, soaking the veneer, soaking a glass fiber cloth, drying, gluing onto PVC, assembling and thermally pressing, reconditioning and the like. Aiming at solving the problems of poor weather resistance, poor corrosion resistance, easy deformation at high temperature and the like existing in a wooden laser cutting die plate, a product obtained through the processing method disclosed by the invention comprises an upper surface layer and a lower surface layer which are both PVC thin layers, a secondary outer layer which is the bevel connection veneer, and other layers which are formed by laminating the glass fiber cloth and wooden layers in a staggered manner. The obtained product by adopting the method provided by the invention has the advantages of light weight, high strength, strong thermal stability, difficulty in deformation and the like and has significant economic benefit and market value.

The invention relates to the technical field of aluminium-plastic panels, in particular to a fireproof aluminium-plastic panel containing a nanometer flame retardant and a core material special for the fireproof aluminium-plastic panel containing the nanometer flame retardant. The core material comprises the following raw materials in parts by weight: 45-55 parts of polyethylene, 25-30 parts of polycarbonate, 15-18 parts of modified enhanced nylon, 2-3 parts of the nanometer flame retardant, 1.5-2.5 parts of modified nanometer cerium oxide, 2-6 parts of a synergist, 3-8 parts of a compatilizerand 1-2 parts of a lubricant. The core material has excellent flame-retardant and fireproof performance, the mobility is high, a core layer can be easily produced through extrusion molding and injection molding, and the core layer produced by using the core material is high in strength and excellent in hardness, resists bending, is not liable to deform, and is excellent in weather resistance; andby adopting the nanometer flame retardant, through combined action of the nanometer flame retardant and the synergist, the core material can have the excellent flame retardant and fireproof performance, and not only can the synergist have an flame-retardant effect, but also a powder state of the synergist can promote the dispersity of materials, so that the rheological property of the core material in the subsequent technologies is improved.

The invention discloses a woodiness function gradient laminate for a high size-stability structure and a manufacturing method of the woodiness function gradient laminate for the high size-stability structure. The woodiness function gradient laminate is characterized in that fast-growing woodiness recombination units serve as core layers, high-strength woodiness recombination units or bamboo recombination units serve as outer layers, inorganic solutions soaked by the units on the adjacent layers are in contact and are hot-pressed to produce gel, and the woodiness function gradient laminate is formed. The woodiness function gradient laminate has the advantages that use materials are structural woods or low-quality man-made forest small-diameter grade woods or branch woods or leftover materials or bamboo woods, the product structure is reasonable and designable, the material use rate is high, the product cost is low, the mechanical strength is high, the size stability is high, the service life is long, the product is anticorrosion and capable of preventing insects, and has the functionality such as inflaming retarding, and the woodiness function gradient laminate can be used as building wall materials, a floorboard or a roof board; the surfaces of the materials are covered with a whole chemical woodiness single plate to serve as the surface layer and the secondary surface layer, the attractive appearance decoration effect can be achieved, and the woodiness function gradient laminate can be completely used for replacing traditional woodiness laminate materials such as a plywood and laminated veneer lumber and can be used as furniture and home decoration materials.

The invention discloses precision casting concocted wax. The concocted wax is prepared from, by weight, 38-42 parts of microcrystalline wax, 18-25 parts of paraffin, 10-12 parts of candelilla wax, 20-24 parts of polystyrene, 16-25 parts of stearic acid, 25-32 parts of ethylene-ethyl acetate copolymer, 9-12 parts of 1,3-oxaazacyclohexane, 10-15 parts of octadecanoic acid, 14-22 parts of calcium stearate, 8-10 parts of sodium dodecyl benzene sulfonate, 12-20 parts of rosin resin, 20-32 parts of ethylene-vinyl acetate copolymer, 18-30 parts of pure monomer resin and 5-6 parts of compatilizer. Compared with the prior art, the precision casting concocted wax has the advantages that a preparing method is simple and reasonable in process, the softening point of the prepared casting concocted wax is within the ideal range so that the concocted wax can be easy to demold in the casting process, and production efficiency is high; the prepared casting concocted wax is low in linear shrinking percentage and subsidence rate, the size stability of the product is high, and a casting is high in surface smoothness and high in quality.

The invention discloses cross laminated timber combining fast growing timber material characteristics and meeting building structure requirements and a preparation method thereof, and belongs to the field of timber structures. A laminated board of the cross laminated timber comprises a fast growing timber laminated board with cracks, the fast growing timber laminated board is a whole cracked board, and lengths of all laminated boards of the cross laminated timber are consistent in the horizontal direction. In the preparation method, adjacent layers formed by the fast growing timber laminated board or fast growing timber laminated board combination are assembled and configured in a manner that wood textures are perpendicular to each other in the thickness direction of laminated wood. According to the cross laminated timber combining the fast growing timber material characteristics and meeting the building structure requirements and the preparation method thereof, the material characteristics that the fast growing timber is soft in material and prone to be made into the laminated board with the cracks in a rotary cutting mode are fully utilized, structural stock lumber is replaced for preparing the cross laminated timber, the utilization of the fast growing timber in the field of building structures is expanded, the material cost of a conventional component is greatly reduced, the component preparation process is simplified, the production period is shortened, and the problem that adverse effects on the mechanical property, durability and fireproof performance of the component are caused through gaps in laminated boards of a structural material cross laminated timber component is solved.

The invention relates to a tool for manufacturing a foot mould, which is characterized in that the tool comprises a first mould (3) and a second mould (4), wherein the first mould (3) comprises a first cavity (1) and a second cavity (2), the second mould (4) comprises a third cavity (5) and a fourth cavity (6), and each of the first mould (3) and the second mould (4) is in a foot sole similar shape. Simultaneously, the invention further provides a method for manufacturing the foot mould by applying the tool for manufacturing the foot mould. The tool for manufacturing the foot mould is simple in assembly, simple and convenient in measurement method and capable of manufacturing one exclusive personal foot mould for a user according to the foot shape of the user, and further an exclusive shoe last for the user can be manufactured, and hand-made customized shoes consistent with the size of the feet of the user and human engineering can be manufactured, so that user satisfaction is improved.

The invention relates to the field of wood modification treatment for wood floor, and in particular to a wood impermeable flame retarding modification treatment agent for wood floor. The modification agent is prepared from the following raw materials in parts by weight: 0.1-0.2 part of calcium sulfate, 0.01-0.02 parts of naphthalene sodium acetate, 4-5 parts of methylene binaphthalene sulfonic acid, 0.1-0.2 part of guaiacol, 10-12 parts of cellulose ether, 35-38 parts of diammonium hydrogen phosphate, 0.1-0.2 part of methyl sodium silicate, 350-400 parts of water and 6-8 parts of additives. The raw materials of the modification treatment agent are environment-friendly, easy to obtain, simple in production and low in cost; effective components including calcium sulfate, naphthalene sodium acetate, guaiacol and cellulose ether permeate into the wood, then are uniformly dispersed and adhered, and are filled into seams of the wood material, thus the compactness of tissue is improved, the impermeability of the wood material is greatly improved, the withstanding resistance to the ambient environment is relatively high, the size stability is good, the effective components are not easy to lose, and the modification effect is long-lasting; the wood floor made of the modified wood material is long-lasting, durable, waterproof, flame-retarding, good in security and high in market competitiveness.

The invention discloses a basalt fiber-enhanced wood-plastic composite material which is prepared from the following components: PVC resin, polyvinyl chloride resin particles, basalt fibers, sulfo-dipropionic acid dilaurate ester, zinc naphthenate, zinc stearate, aminopropyl triethyl silane, wood fibers, a vermiculite power, pentaerythritol and a plasticizer. Under the synergetic cooperation action of the basalt fibers, the vermiculite power, the wood fibers and the plasticizer, the mechanical property of the basalt fiber-enhanced wood-plastic composite material is greatly improved.

The invention discloses a preparation method of stereoscopic low-carbon fur spun wool. The preparation method comprises the following steps of: production of a finished color stripe, spinning of spun yarns, weaving and settling, wherein production of the finished color stripe comprises the following steps of: pre-treatment of wool and prolivon fiber Paster, respective dyeing of the wool and the prolivon fiber Paster, back washing, drying, silver mixing, first needle, second needle, recombing, can gilling and finisher gilling to obtain a finished stripe; spinning of the spun yarns comprises the following steps of: silver mixing, first needle, second needle, third needle, fourth needle, roving, combined spinning plus winding machines, doubling and two-for-one twisting; weaving comprises the following steps of production of a card, yarn drum placement and weaving with a circular knitting machine; and settling comprises the following steps of: wool washing with liquid flow, wet blank sizing, brushing and shearing, and burning and steaming. According to the method disclosed by the invention, the fur spun wool prepared by the method has the advantages of full bone feel, strong size stability, strong third dimension of a wool surface of a product, good glossiness, difficulty in deformation, strong recovery property, dual character of formal clothes and leisure fabric of the product, and wide application range.

The invention provides a heat conduction multifunctional composite artificial board for a floor-heating floor substrate and a manufacture method thereof. The heat conduction multifunctional compositeartificial board comprises a surface layer substrate, a glue layer, a heating layer and an intermediate substrate. The heating layer is a carbon-based film, at least one carbon-based film is correspondingly arranged on the upper side and the lower side of the intermediate substrate, and heat-conducting layers are arranged on the side faces of the periphery of the heat conduction multifunctional composite artificial board for the floor-heating floor substrate. The heat-conducting layers are formed by coating heat-conducting paint. According to the heat conduction multifunctional composite artificial board, the heat-conducting layers can form rapid heat-conducting channels and enhance the heat-conducting performance; at the same time, after the implanted carbon-based film and bonding materials are fused and solidified, the mechanical and mechanical properties such as structural stability, bonding strength, bending strength and impact resistance can be effectively enhanced; and at the same time, because the implanted carbon-based film has good conductivity, the good antistatic and electromagnetic radiation shielding properties are achieved. The manufacture method can effectively improve the heat-conducting property and dimensional stability while improving the manufacture efficiency, and the large-scale production is facilitated.

A provided preparation method for milk protein composite fiber comprises the following steps: pre-treatment on cotton fiber, preparation of a reduction milk protein solution of cotton fiber, and preparation of milk protein composite fiber. The preparation method for the milk protein composite fiber is easily available in raw materials, compact in reaction steps, easily controllable in process and strong in technology maneuverability and repeatability. The invention also provides the milk protein composite fiber which comprises cotton fiber at the core and milk protein at the external surface of cotton fiber, and application of the milk protein composite fiber as a clothes material. When a garment made from the provided composite fiber is worn on a body, milk protein directly contacts skin, the skin-friendly property is better than that of conventional plant fiber, and also the garment has gloss of silk and is strong in sweat absorbing property, good in dimension stability and low in cost. According to the application of the milk protein composite fiber, the milk protein composite fiber is applicable to prepare intimate apparels, such as bras, underpants, small vests and summer clothes.