103results about How to "Improve nail holding power" patented technology

The present invention discloses a hot-pressing carbonization strengthening method of timbers, which includes drying, planing, hot-pressing carbonization, cooling and other steps. The present invention applies a hot press as a timber-carbonizing device, and the timbers under the state of compression are processed by hot-pressing carbonization. The present invention is characterized in that the investment on carbonization devices is less, the carbonization process is simple, the production is safe, the production efficiency is high, the consumption of heat energy is little, and the production cost is low; moreover, the thickness of the carbonized timbers is not limited, the defects of the timbers, such as deformation, cracking, stiker stain, color difference, knot fall-off, etc., do not occur in the process of production, so the quality of products is high; not only is the size stability and noncorrodibility of the carbonized timbers improved, but also the density and mechanical property of the timbers is increased.

The invention discloses a multilayer composite plate for building templates and brick pallets, which is prepared from magnesium cement gel added with a reinforcing material and a filler, and comprises surface layers (1) and sandwich layers (2); the surface layers (1) or/and the sandwich layers (2) comprise the filler or/ and the reinforcing material with even content or gradient change; the number of the sandwich layers (2) is totally between 1 and 5; and the reinforcing material is arranged between adjacent sandwich layers (2). The invention also comprises a preparation process for the multilayer composite plate, which comprises that: production equipment with the capacity of stirring and preparing materials at multiple positions and rolling at multiple positions orderly rolls the surface layers (1) or/and the sandwich layers (2) on a subplate (3); and the reinforcing material is used as a reinforced structure between adjacent surface layers (1) or/and sandwich layers (2). The products corresponding to the invention have the characteristics of strong applicability, good technical effect and suitability for mechanical continuous production, and have predictable great economic and social values.

The invention relates to a method for manufacturing medium-density fiberboards, and belongs to the technical field of manufacture of fiberboards. The method includes proportionally cutting root-wood and brushwood to obtain 60X30X5mm wood chips; carrying out cleaning, cooking, hot-grinding and drying procedures for the wood chips to obtain fibers; proportionally and sufficiently mixing the fibers with sanding powder and sawdust-shaped edge strip and corner materials to obtain mixtures; and carrying out gluing, paving and hot-pressing procedures for the mixtures to manufacture finished medium-density fiberboard products. The method has the advantages that the manufacturing cost of the medium-density fiberboards is reduced to a certain extent; problems that sanding dust which is generated in existing fiberboard manufacturing procedures and edge strip and corner materials which are generated during blank plate cutting are discarded as rejected materials, environments are polluted, the manufacturing cost is increased and limited forest resources are wasted are solved; and the fiberboards manufactured by the method are stable in internal structure, low in deformation and good in physical and mechanical performance.

The invention belongs to the field of board machining and particularly relates to a production process of a high-grade fir melamine ecological board. The process particularly includes the following steps of poplar middle plate selection, poplar middle plate splicing, fir core veneer selection, fir core veneer sanding, fir core veneer slotting, core veneer gluing, infrared ray board arrangement for forming a blank, cold pressing, core cutting, hot pressing, putty application, maintenance, sanding, semi-checking, secondary putty application, secondary sanding, gluing and veneering, base board cold pressing, base board edge cutting, base board hot pressing, base board putty application, base board fixed-thickness sanding, base board edge sawing, base board inspection, repairing, melamine impregnated paper hot pressing and finished product inspection, packaging and warehousing of finished products. The production process has the advantages that fir core veneers are adopted, the hardness, nail-holding ability and static bending strength of the board is improved; eucalyptus middle plates are replaced with poplar middle plates, and the defects that the surface of the finished products is stained and carbonized caused by multiple burrs and scabs on the surfaces of the gum wood are reduced effectively.

The invention relates to the technical field of composite artificial boards and discloses fireproof marine-grade plywood. The fireproof marine-grade plywood comprises a flame-retardant veneer, high-strength glass fiber meshes, flame-retardant solid wood core veneers and a flame-retardant bottom board, wherein the flame-retardant veneer is arranged on the uppermost layer, the flame-retardant bottom board is arranged on the bottommost layer, and one layer of high-strength glass fiber mesh, the three layers of flame-retardant solid wood core veneers and one layer of high-strength glass fiber mesh are sequentially arranged between the flame-retardant veneer and the flame-retardant bottom board from top to bottom; the layers are bonded through modified macromolecular WBP flame-retardant and waterproof glue. The fireproof marine-grade plywood has the functions of being resistant to fire, inflaming, water, moisture, insects and ants and absorbing sounds and shock, saves the energy, protects the environment and is high in strength.

The invention discloses a compression molding fibre-reinforced straw plastic combined cabinet slab which is prepared from the following raw materials according to parts by weight: 0.2-0.6 part of modified crop straw fibre or straw fibre wood powder thereof, 0.1-0.2 part of PET or nylon waste silk, 0.05-0.2 part of melamine, 0.05-0.2 part of modified talcum powder, 0.01-0.05 part of chemical assistant and 0.3-0.6 part of polyolefin thermoplastic resin. The invention also discloses a preparation method thereof. The cabinet slab of the invention is formaldehyde-free environment-protection material and has wood texture and handling characteristics, and the machinery mechanics strength thereof exceeds that of good-quality solid-wood slabs; and in addition, the cabinet slab does not adsorb water and has the functions of low coefficient of thermal expansion, moisture prevention, mildew prevention, aging prevention, combustion prevention, reuse and the like and is an ideal cabinet slab wood replacing material.

The invention belongs to the field of board machining and provides a novel solid ecological bamboo board and a production process thereof. The novel solid ecological bamboo board comprises a cedarwood board core, middle boards, bamboo fiber boards and melamine impregnated paper. The upper surface and the lower surface of the cedarwood board core are covered with the middle boards through gluing and integrally pressed to form a board blank; the melamine impregnated paper is stuck to the bamboo fiber boards in a pressed mode to integrally form surface-layer substrates; the upper surface and the lower surface of the board blank are gelatinized and coated with the surface-layer substrates and integrally formed through hot pressing to obtain a finished product. The novel solid ecological bamboo board and the production process thereof have the advantages that 1, a novel assembly structure is adopted, and the hardness, nail-holding ability, static bending strength and surface evenness of the board are greatly improved; and 2, the bamboo fiber boards are adopted for the surface-layer substrates, the fracturing resistance and the thermocycling resistance of melamine ecological boards are greatly improved, and thus the melamine ecological board can meet the all-weather all-region using requirement; besides, the finished product is low in formaldehyde content, economical, environmentally friendly, and the advantages of water resistance, mould resistance, inflaming retarding, moth resistance and the like are achieved at the same time.

The invention relates to a modified fast growing wood impregnating agent and impregnation high-temperature integrated treatment method. The method comprises the following steps: (1) preparing a modified urea-formaldehyde resin impregnating agent; (2) preparing the fast growing wood and treating at a preparation stage; (3) absolutely drying at a high temperature; (4) performing the impregnation and high-temperature integrated treatment; (5) aging, maintaining, inspecting and warehousing. The modified fast growing wood impregnating agent and impregnation high-temperature integrated treatment method has the advantages that: (1) a modified impregnating agent is made into a suspension by adding a nano material on the basis of the conventional urea-formaldehyde resin impregnating agent and ultrasonically stirring, the modification effect of the modified impregnating agent on the aspects such as hardness, abrasion resistance, size stability and the like is better than that of the conventional urea-formaldehyde resin impregnating agent, and the preparation process is simple, moderate in conditions and convenient to operate; (2) the physical and mechanical properties of the fast growing wood such as poplar and cedar can be well improved; the wide application of the fast growing wood can be realized, the consumption of top-grade wood can be reduced, the wood application range can be enlarged, the additional value and technical content of the fast growing wood can be increased, and the optimal application of poor wood can be realized.

The invention discloses a wood-plastic board, which is composed of raw materials in the following weight ratios: PVC resin powder: 100 parts; plant fiber powder: 25-60 parts; calcium filler: 40-90 parts; plasticizing regulator: 0.5 ‑5 parts; processing aid superfine wollastonite powder: 0.5‑5 parts; environmental stabilizer: 3‑9 parts; ACR processing aid: 3‑12 parts; foaming agent: 0.5‑4 parts; internal and external lubricants: 0.5-3.5 parts, the particle size of the superfine wollastonite powder is at least 1500 mesh, and the upper material is mixed, heated, shaped and cut. The invention also discloses a production process. It is environmentally friendly, low in cost, and the cut surface of the product is neat, dense and free of pores, and its hardness, strength, and nail holding force are higher than the national standard, which can meet the effects of various post-processing requirements of the product.

The invention discloses a technology for manufacturing glulam, comprising the following steps: scrimming; sieving fine material and coarse material; drying fine material and coarse material respectively and glue blending; orientated lay-up, respectively laying up two fine wood stick layers on front face and back face of a coarse wood stick layer to manufacture a slab; and hot-pressing the slab to form a sheet. According to the technology, leftover material of waste wood is rolled and scrimmed to the fine wood stick layers and the coarse wood stick layer, which are then dried, glue-blended and orientated-laid, respectively, the two fine wood stick layers are laid up on the front and back faces of the coarse wood stick layer, which can not only ensure flatness on the surface of the sheet, but can also make full use of the leftover material of waste wood, thus the utilization rate of woods is enhanced; in addition, the technology with simple production process can manufacture integrated sheet having high strength and nail-holding ability, without paying attention to the processing precision of wood sticks.

The present invention relates to a three-layer structure wooden composite plate material and its production method, belonging to the field of building decorative technology. Said composite plate material is formed from surface layer and core layer, in which the core layer material formed from flat structure unit adopts wood material, bamboo material and straw, and said flat structure unit size is: length 45-110 mm, width 10-50 mm and thickness is 0.1-1 mm, and the thickness of core layer is 21-91% of that of plate material. Said surface layer material is made up by selecting fibre or particle structure unit, and adopting the procedures of preparing material, laying-forming, pre-pressing and hot-pressing. The adhesive used by core layer is isocyanate adhesive. Said invention also provides the steps of laying, forming process.

The invention discloses an ultra-light-weight composite environment-friendly fiber board and a preparing method of the ultra-light-weight composite environment-friendly fiber board, and belongs to the technical field of an ultra-light-weight fiber board. The ultra-light-weight composite environment-friendly fiber board is characterized by comprising an upper flame-retardant wood fiber layer, a lower flame-retardant wood fiber layer and a wood fiber and expanded perlite mixing layer arranged between the upper and lower flame-retardant wood fiber layers. The invention also discloses the preparing method of the ultra-light-weight composite environment-friendly fiber board. The ultra-light-weight composite environment-friendly fiber board has a series of advantages that the supporting capacity of a high-rise building partition wall is effectively reduced; the strength of the wall surface is enhanced; the properties such as the impact-resistant property, the folding-resistant property and the nail holding force are good; the heat insulation function, the fireproof function, the sound isolation function, the anti-seismic function and the aging-resistant effect are achieved; the secondary wall surface decoration is convenient; and the attaching force of a decoration surface is strong, and the like.

The invention relates to a treatment method of enhancing wood performance by quick dense carbonization. The treatment method comprises the following steps: (1) drying wood; and (2) placing the wood toa stainless steel electric heating plate, placing a perforated metal plate on the wood, heating, pressing and compacting the wood, wherein the compaction ratio of the wood is controlled at 6-25%, keeping the pressure state for thermal treatment for 1-30 min, and cooling and depressurizing the wood to obtain the dense carbonization enhanced wood. According to the treatment method provided by the invention, compact densification of the wood is achieved while the wood is carbonized, and the density of the wood is increased, so that the surface hardness and the bending strength of wood are enhanced, that is, the mechanical properties of the wood are improved.

The invention belongs to the field of building materials, and relates to a method for improving the mechanical property of a gypsum-based material. The method comprises the following steps that: a) gypsum powder, a reinforcing agent, a toughening agent, a hardening agent and water are mixed to obtain gypsum slurry, wherein the reinforcing agent comprises an acrylic polymer, polyisocyanate polyester, polyalkyd resin and the like, wherein the toughening agent comprises glass fibers, paper fibers and wood fibers, and the hardening agent comprises sodium silicate, quartz powder and sand; and b) solidifying and molding the gypsum slurry, and then performing drying to obtain the high-strength gypsum-based material. According to the method provided by the invention, the reinforcing agent, the toughening agent and the hardening agent of specific types are doped into the gypsum, so that the breaking strength, hardness and shearing strength of the gypsum-based material are greatly improved. Withthe method adopted, the problem of poorer mechanical property of a traditional gypsum-based material can be solved; the mechanical strength and nail-holding power of the prepared gypsum-based material can be comparable with those of a blockboard, and the gypsum-based material has a higher fireproof grade than the blockboard.

The invention discloses a chlorosulfonated polyethylene rubber/biomass composite plate. The chlorosulfonated polyethylene rubber/biomass composite plate is characterized by being made from the following raw materials: rice straw, wheat straw, a sodium hydroxide solution, n-propyl alcohol, maleic anhydride, azodiisobutyronitrile, acetone, styrene, N,N-dimethyl-4-pyridylamine, montmorillonoid, sodium hexametaphosphate, cocamidopropyl betaine, vinyl triethoxysilane, chlorosulfonated polyethylene rubber, zinc oxide, dipentamethylenethiura tetrasulfide, imarcaptoacetate dioctyltin, a proper amount of hydrochloric acid solution and a proper amount of deionized water. The made chlorosulfonated polyethylene rubber/biomass composite plate has the advantages of stable size, wear resistance, corrosion resistance, nailing, sawing and pivoting properties, waterproofness, mold resistance, worm damage resistance, wide application and the like.

The invention relates to the field of plastic-coated aluminum profiles, and particularly discloses a wood-like flame-retardant plastic-coated aluminum profile and a preparation method thereof. The wood-like flame-retardant plastic-coated aluminum profile is composed of an aluminum profile and a coating layer outside the aluminum profile, wherein the coating layer is composed of the following components in percentage by weight: 10-50% of adhesive resin, 10-35% of toughening resin, 5-20% of a filler, 15-35% of a flame retardant, 0.1-1% of an anti-dripping agent and 0.4-2.3% of other auxiliary agents, wherein the adhesive resin is at least one selected from a polyethylene copolymer and maleic anhydride-grafted polyolefin; and the toughening resin is at least one selected from ultra-high-molecular-weight polyethylene and polypropylene. The plastic-coated aluminum profile has the advantages that bonding force between the coating layer and the aluminum profile is improved, and therefore, thenail-holding force of the overall structural strength of the plastic-coated aluminum profile is improved.

The invention provides a bamboo charcoal plate and a manufacturing method thereof. The bamboo charcoal plate is prepared from the following raw materials in parts by mass: 30 to 100 parts of absorbing substrates formed by mixing charcoal powder and bamboo fine fiber powder, and 10 to 130 parts of resin base materials. The bamboo charcoal plate provided by the invention comprises raw materials of bamboo fine fiber powder; the bamboo charcoal has high formaldehyde absorbing capability; in addition, a certain degradation effect is also achieved on formaldehyde, so that the absorbing effect of the bamboo charcoal plate on harmful gas is improved; when 50 to 100g of bamboo charcoal is put into per cubic meter of space, the adsorption rate on the formaldehyde within 12 hours can reach 33 percent. In addition, the nail-holding power and the toughness effect can be improved by the bamboo charcoal.

The invention discloses a high-strength non-combustible decoration plate. A preparation method comprises the following steps of: impregnating kraft paper into phenolic resin, alternately superposing the kraft paper and a substrate to form a sandwich structure, and performing hot-press forming by using a hot press. The properties such as nail-holding power, compression strength, tensile strength, bending strength and the like of the high-strength non-combustible decoration plate are obviously improved, the decoration plate has high compactness, and the apparent density is improved by over 25 percent.