102 results about "Wood industry" patented technology

The invention relates to an adhesive used for an artificial board and a preparation method thereof. The invention is characterized in that the artificial board consists of water, acid, chitosan, phenol and enzyme; the detail steps of the preparation technique are as follows: 70 to 100 portions of water, 0.01 to 6 portions of acid and 0.01 to 12 portions of flexible components are added into a stainless steel kettle; the temperature is between 10 and 80 DEG C; a stirring machine is started for uniformly mixing at a speed of 400r / min; 0.01 to 45 portions of phenol are added for stirring; the pH is adjusted to be 3 to 8; 1 to 10 portions of enzyme is added for continuously stirring; enzyme treatment time is between 0.1 minute and 48 hours; after the viscidity of the adhesive is 4 cups for 20 to 100 seconds, stirring is stopped; and then an opening is sealed for storage. The adhesive used for the artificial board does not contain formaldehyde, has no poison and smells during the production and use processes, does not release harmless gases, is safe and environmental friendly; the used chitosan is natural product which can be decomposed and recycled; in the invention, biocatalysis and biological transformation technologies are applied to wood industry; and bio-enzyme catalytic polymerization is adopted for preparing the adhesive and can be carried out under normal temperature and pressure.

The invention relates to the field of furniture wood industries, in particular to a method for preparing a wax oil floor. Firstly, linseed oil, stillingia oil, perilla oil, pine oil, castor oil, rosin modified resins and beeswax which each account for 10%-30% of the total content of semi-finished wax oil are mixed and subjected to high-temperature polymerization at the temperature of 280-300 DEG C; turpentine is added into a polymerized mixture for dilution and filtering to form the semi-finished wax oil; a dryer is added into the diluted and filtered semi-finished wax oil for concoction, and after the concoction is finished, finished wax oil is formed; then the finished wax oil is smeared to the floor, and finally after the wax oil on the floor is blown dry, the wax oil floor is formed. The process is simple, the wax oil floor with the indexes identical to foreign indexes can be produced, the floor without harmful substances such as formaldehyde and benzene is achieved, and the requirement of environmental protection is met.

The invention belongs to the technical field of adhesive production, and particularly relates to an environment-friendly adhesive and a method for preparing the environment-friendly adhesive by using silkworm cocoon waste silk glue. The preparation method of the environment-friendly adhesive comprises the following steps: (1) collecting wastewater generated after boiling silkworm cocoons, cooling to room temperature, then filtering by using an ultrafiltration membrane, and recovering a trapped liquid so as to obtain a silk glue concentrated solution, or concentrating by 10-12 times in vacuum or at normal pressure under the condition of lower than 80 DEG C so as to obtain a silk glue concentrated solution; (2) carrying out modified treatment on the silk glue concentrated solution obtained in the step (1) so as to obtain the silk glue concentrated solution subjected to modified treatment; and (3) concentrating the silk glue concentrated solution subjected to modified treatment at a normal pressure or in vacuum under the condition of lower than or equal to 80 DEG C so as to obtain a sticky flowable material which is the environment-friendly adhesive. The environment-friendly adhesive prepared by the method can be widely applied to wood industries or plant fiber molding industries, is safe and environment-friendly and does not release harmful substances such as formaldehyde which are harmful to human bodies in a using process.

The invention belongs to the technical field of biology based phase change materials, and especially relates to a polyethylene glycol wood powder composite phase change material (PCM) and a preparation method and applications thereof. The polyethylene glycol wood powder composite phase change material (PCM) is composed of polyethylene glycol and wood powder. The preparation method comprises following steps: heating and melting polyethylene glycol, adding wood powder into melted polyethylene glycol under stirring, evenly mixing under heating and stirring, and finally subjecting the mixture to vacuum adsorption to obtain the polyethylene glycol wood powder composite phase change material. Waste leftover materials in the wood industry are processed to obtain ultrafine wood powder and wood fibers, which are used to prepare the phase change material; natural renewable biological resources are used to prepare the phase change material; the wastes are recovered and reutilized; and the using amount of nonrenewable fossil resources and mineral resources is reduced in phase change material preparation. The prepared phase change material has the advantages of high enthalpy change value and good heat stability.

The invention provides a white poplar wood frame strip and a manufacturing method thereof. The manufacturing method comprises the following steps: adopting a water-soluble impregnant, uniformly spraying or soaking an impregnation liquid on a white poplar wood sheet subjected to cutting and sawing to carry out impregnation treatment; carrying out microwave drying on the impregnated white poplar wood sheet; and carrying out section bar processing on the white poplar wood sheet by a planing machine. The white poplar wood frame strip which takes white poplar as a basic raw material is green and environmentally-friendly, low-carbon and attractive, novel and practical, and nationally initiative, so that fast-growing white poplar man-made forest in China becomes the main theme of raw materials in wood industry, and a strong industrial chain of research and development, production, marketing and export is realized. Due contribution is made for new normal development and sustainable development of Chinese economy.

The invention belongs to the technical field of wood industry processing, in particular to a panel drying device for wood industry. The panel drying device for wood industry comprises an outer room body, an inner room body and a hot air circulating system, wherein a hot air flowing space is formed between the inner room body and the outer room body; the hot air circulating system comprises a stainless steel heating tube with a fin, a fan and an air duct; the stainless steel heating tube is arranged on the inner side of the outer room body; the stainless steel heating tube with the fin is composed of a high resistance electric heating alloy wire, a connecting screw, an electric heating tube and a heat-dissipating fin; the high resistance electric heating alloy wire is arranged on the uppersurface of the connecting screw; the connecting screw is connected to the electric heating tube; the electric heating tube is arranged in the heat-dissipating fin; and an air guide tube unit for guiding hot air into the inner room body to dry panels is arranged on the inner room body. By generating and introducing hot air to the hot air flowing space by means of the hot air circulating system to dry the panels placed in the inner room body all around, the panel drying device for wood industry is good in drying effect and high in work efficiency. The electric heating efficiency is high by adopting the stainless steel heating tube with the fin.

The invention discloses a method for identifying plant variety, and provides a method for identifying crape myrtle variety. The method comprises the following steps: 1) carrying out polymerase chain reaction (PCR) amplification by taking a genome deoxyribonucleic acid (DNA) of to-be-detected crape myrtle as a template and using a primer composed of two single-chain DNA molecules shown in a sequence 1 and a sequence 2, so as to obtain a PCR product; 2) sequencing the PCR product, and listing the nucleotide formulas of the to-be-detected crape myrtle according to the sequencing result; 3) comparing the nucleotide formulas obtained in the step 2) with corresponding nucleotide formulas of a plurality of crape myrtle varieties, so as to determine the variety of the to-be-detected crape myrtle. An experiment proves that the method is accurate, and simple and fast to operate, the production efficiency and the quality monitoring level of related enterprises can be improved, and the defects of the traditional method are effectively compensated. In addition, identification of a non-flowering phase (for example, a seedling stage) is simultaneously achieved. The method has important significance on facilitation of development of new variety breeding of the crape myrtle, crape myrtle flower and wood industries and urban garden greening, and environmental protection.

The invention relates to a method for producing a urea formaldehyde resin adhesive. The product produced by the method is a main adhesive used in wood industries at home and abroad and can be used for adhering plate materials, veneers and building decorative plates. The urea formaldehyde resin adhesive has the advantages of no color or oyster white color, high curing speed, high transparency, high operability, rich and readily available raw materials, no pollution to the surfaces of wood materials and simple production process. The urea formaldehyde resin adhesive has the defects of high fragility, lower water resistance and adhesive strength compared with those of phenolic resin and low durability. In the method, the defects are shrunk to minimum and the advantages are maintained by a certain process. The urea formaldehyde resin adhesive is prepared from the raw materials such as liquid urea formaldehyde resin with content of 60 percent, polyhexenyl acetate, ammonium sulfate, wood powder, melamine glue formaldehyde resin, aluminium hydroxide and formaldehyde.

A method for increasing the effectiveness of the microbicide propiconazole, (RS)-1-2-[(2,4-dichlorophenyl)-2-propyl-1,3-dioxalan-2ylmethyl]-1H-1,2,4-triazole, is described. In the method, propiconazole and a potentiator, an N-alkyl heterocyclic compound, its salt, or a mixture thereof, are applied to a substrate or aqueous system subject to the growth of microorganisms. The N-alkyl heterocyclic compound, its salt, or a mixture thereof is applied in an amount effective to increase the microbicidal activity of the microbicide. The N-alkyl heterocyclic compound has the formula:The variable "n" ranges from 5 to 17, and the heterocyclic ring defined byis a substituted or unsubstituted ring having four to eight members. Microbicidal compositions are described where propiconazole and an N-alkyl heterocyclic compound, its salt, or a mixture thereof are present in a combined amount: effective to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms on various substrates and in various aqueous systems are also described. The combination of propiconazole and an N-alkyl heterocyclic compound, its salt, or a mixture thereof is particularly useful as microbicidal in the leather industry, the lumber industry, the papermaking industry, the textile industry, the agricultural industry, and the coating industry, as well as in industrial process waters.

The invention belongs to the technical field of base material preparation of wood processing and furniture production, and particularly relates to a China fir dense furniture profile and a processing method. A plastic film replaces an adhesive to prepare the dense furniture profile; the thickness of China fir sheets is 8-12 mm, the width is selected according to the specification of the furniture profile, and the sheets are subjected to microwave softening treatment, then assembled to be put into a home-made pressurization mold and pressurized and glued into the dense furniture profile under the certain hot-pressing conditions. The processing method ensures that the base material is free of aldehyde and environmentally friendly, and the processing method is a processing technology capable of efficiently improving the additional value of middle cutting wood of fast-growing China firs. The consumption concepts of environmental protection, safety and health in the current wood industry and furniture industry are met, and the application fields are wide.

The invention provides a high-temperature cured type esterification modified cassava starch adhesive and a preparation method thereof and belongs to the technical field of adhesive preparation. At present, raw materials of adhesives generally used in the wood industry are non-renewable. The high-temperature cured type esterification modified cassava starch adhesive is mainly prepared from, by weight, 80-100 parts of modified cassava starch adhesive, 7-12 parts of isocyanate, 0.5-1.5 parts of antioxygen, 0.5-2 parts of flame retardant, 0.02-0.2 part of light stabilizer and 0.5-1 part of ultraviolet light absorber, wherein the modified cassava starch adhesive comprises cassava starch, polyvinyl alcohol, sodium dodecyl sulfate and dodecenyl succinic anhydride. The high-temperature cured type esterification modified cassava starch adhesive is moderate in viscosity, stable in storing and slow in layering. The preparation process is simple and easy to operate. The consumed time is short. The high-temperature cured type esterification modified cassava starch adhesive is excellent in water resistant performance and bonding strength, and industrial production is likely to be realized.

The invention discloses a novel adhesive for wood industry. The adhesive is prepared from the following components in parts by weight: 2-3 parts of sodium hexametaphosphate, 3-4 parts of polyether polyol, 1-2 parts of aluminic acid ester, 5-6 parts of sodium hexametaphosphate, 4-5 parts of hydroxyethyl saponin gum, 1-2 parts of dibutyl phthalate, 2-3 parts of potassium persulfate, 2-3 parts of caprolactam, 6-7 parts of an epoxy resin emulsion and 2-3 parts of a penetrant JFC. The novel adhesive for wood industry disclosed by the invention is strong in adhesive force, difficult to fall, easily available in raw materials and good in weather resistance.

The invention discloses a bidirectional stirring device for wood industry glue, wherein the bidirectional stirring device comprises a rack, and a support plate is arranged in the rack; a stirring barrel is arranged on the supporting plate, and a vertically-arranged motor is arranged in the center of the upper portion of the stirring barrel; a bidirectional gear mechanism is arranged below the motor and is connected with a first stirring rod; the first stirring rod is sleeved with a second stirring rod connected with the bidirectional gear mechanism; a first fan-shaped stirring blade and a second fan-shaped stirring blade are respectively arranged at the middle part and the lower end of the first stirring rod; inverted U-shaped stirring blades are arranged at the lower end of the second stirring rod; a barrel cover is arranged at the top of the stirring barrel; the bidirectional gear mechanism is mounted on the barrel cover; a feeding hopper is arranged on the barrel cover; a discharging pipe penetrating through the supporting plate is arranged below the stirring barrel; the second stirring rod is shorter than the first stirring rod. The bidirectional stirring device has the advantages that the stirring efficiency is relatively high, the stirring time is relatively short, and local oxidation of glue cannot be caused.