209results about "Wood cryogenic treatment" patented technology

The invention provides a processing technology for moso bamboo for a bamboo-woven basket. The processing technology comprises the following steps that the moso bamboo freshly cut is placed into a refrigeration house with the temperature ranging from 10 DEG C to 15 DEG C to be frozen; the frozen moso bamboo is taken out and subjected to high-temperature processing for 30-60 min, the processing temperature ranges from 120 DEG C to 150 DEG C, and then the moso bamboo is placed in a closed pressure processing tank to be subjected to high-pressure processing; and the root of the moso bamboo subjected to high-pressure processing is cut away, bamboo breaking is conducted through a bamboo breaking machine, a bamboo skin is formed and tailored according to the specification of a needed bamboo-woven product, then, the tailored bamboo skin is dried, and the water content of the bamboo skin is not larger than 4%. The operation of the processing technology is easy to achieve. The moso bamboo processed through the processing technology is used for weaving the bamboo-woven product, the mould proof, high-temperature resisting and severe cold resisting capability and the anti-yield strength of the bamboo-woven product can be greatly improved, and the connection strength of bamboo fiber is obviously improved.

The invention mainly relates to the technical field of machining of artificial boards, and discloses a preparation method of antibacterial mould-proof plywood for decoration. The preparation method comprises drying, dipping, freezing, gluing, hot pressing and arrangement; the method is simple, safe and nontoxic; the obtained plywood for decoration reaches the mould inhibition rate of 76.3%, and contains no poisonous chemical reagent; the human health is guaranteed in the preparation and use process of the plywood; a veneer is firstly dried at low temperature, so that the water content is lower than the water content of a conventional veneer, the activity of the mould remained in the veneer is inhibited, the moulding is inhibited, the absorption of treatment solution in later treatment process is promoted, and the production efficiency is improved; and the dried veneer is put in sodium selenite solution for ultrasonic dipping, so that the sodium selenite solution is fully infiltrated in the veneer to inhibit growth of infectious microbes, the binding force of lignin to cellulose is reduced, the softness of the veneer is improved, breakage is prevented, and the machining performance and the use performance of the plywood are improved.

The invention discloses a method for improving corrosion resistance of wicker products. The method comprises the following steps: (1) skin removal of wickers, (2) softening treatment, (3) wicker weaving, and (4) anti-corrosion treatment. Various steps of the method are matched scientifically and reasonably, and the manufactured wicker products are good in insect prevention, mildew prevention and corrosion resisting effects and are high in surface hardness. Compared with the prior art, the method has the characteristics that the surface hardness of the wicker products can be improved by about 25%, the wicker products are used under the condition of high acid and alkali, the anti-corrosion time of the wicker products can be 4-5 times longer than the original anti-corrosion time, the service life can be prolonged by about 30% under the conventional using conditions, and can be prolonged by 40% or above under the condition of high humidity, use stability is good, anti-deformation ability is high, corrosion resistance is good, and use value is high.

The invention discloses a preparing method for bamboo strips used for bamboo craft weaving. The preparing method includes the following steps that firstly, a bamboo tube is put into first soaking liquid to be subjected to primary soaking for 1-2 days under the temperature ranging from 50 DEG C to 60 DEG C; secondly, the bamboo tube obtained after primary soaking is subjected to freezing treatment; and thirdly, the frozen bamboo tube is put into a second soaking solution to be subjected to secondary soaking for 1 h to 3 h under the temperature ranging from 50 DEG C to 60 DEG C, and the bamboo strips are obtained. The bamboo strips treated through the preparing method have good flexibility and are very suitable for weaving of various crafts.

The invention discloses a bamboo chip softening treatment method, and belongs to the technical field of manufacture of bamboo products. The bamboo chip softening treatment method includes the steps: firstly, placing bamboo chips into a refrigeration house and freezing the bamboo chips for 5-8 hours at the temperature ranging from -5 DEG C to 0 DEG C; secondly, taking out the bamboo chips, placing the cold bamboo chips into soaking fluid at the temperature of 50-60 DEG C, and soaking the bamboo chips for 1-2 hours in a heat retaining manner under the ultrasonic condition of 80W power and 50Khz frequency; thirdly, taking out the bamboo chips and rinsing the bamboo chips with 0.9wt% saline water at the temperature ranging from -5 DEG C to 0 DEG C. The soaking fluid is prepared by mixing 50 parts of absolute ethyl alcohol, 2 parts of cardanol, 1 part of zinc stearate and 100 parts of deionized water with electric conductivity lower than 5muS/cm in parts by weight. The bamboo chips treated by the method have excellent softness and are quite suitable for fabricating various handicrafts.

The invention discloses a method for utilizing dendrocalamus affinis leaves to process zongzi wrapping leaves. Dendrocalamus affinis leaves are adopted as a processing material for zongzi wrapping leaves. The method comprises the technological processes of dendrocalamus affinis leaf picking, green color protecting through a green-preserving agent, sorting and stacking, ultralow temperature freezing treatment, drying, and discharging and dampening, wherein the green color protecting technology comprises the steps of placing the leaves in sodium copper chlorophyllin to be soaked for 20 min, and then, placing the soaked leaves into an electrochemical device to be subjected to electrochemical treatment. According to the method, the dendrocalamus affinis leaves can be utilized to supplement the zongzi wrapping leaf resource, and the contradiction between supply and demand is relieved; the green color of the zongzi wrapping leaves is achieved through utilizing the sodium copper chlorophyllin, and the food safety problem is avoided; and the reaction is promoted through adopting an electrochemical manner.

Methods for determining the hardness and/or ductility of a material by compression of the material are provided as a first aspect of the invention. Typically, compression is performed on multiple sides of a geologic material sample in a contemporaneous manner. Devices and systems for performing such methods also are provided. These methods, devices, and systems can be combined with additional methods, devices, and systems of the invention that provide for the analysis of compounds contained in such samples, which can indicate the presence of valuable materials, such as petroleum-associated hydrocarbons. Alternatively, these additional methods, devices, and systems can also stand independently of the methods, devices, and systems for analyzing ductility and/or hardness of materials.

The invention discloses a softening process method of willow twigs. The softening process method of the willow twigs comprises the following steps of (1) pre-processing the willow twigs, (2) pre-drying the willow twigs. (3) preparing a mixed process liquid. (4) primarily soaking and drying, (5) primarily deforming at a low temperature, (6) secondarily soaking and drying, (7) secondarily deforming at a low temperature, and (8) preserving heat and drying. According to the method provided by the invention, the softening process effect is uniform, the phenomena such as breakage and cracking during weaving can be well prevented, the yield of the processed willow twigs is high and can achieve more than 98.2 percent, and the weaving speed can be improved by 10 to 15 percent, so that the softening process method of the willow twigs has a better use value.

The invention discloses a preparation method of a porous structure functional wood base material. The preparation method comprises the following steps: heating choline chloride and binary acid at thetemperature of 60 to 90 DEG C for 0.5 to 2 h to synthesize an eutecticevaporate solvent (DES), then carrying out immersion treatment on wood at the temperature of 60 to 120 DEG C for 4 to 10 h so as to remove lignin and hemicellulose, then adding H2O2 and adjusting pH value to be 9 to 11with a NaOH solution, and finally carrying out freeze drying to obtain the porous structure wood base material.The preparation method is characterized in that the preparation technology is simple, environmentally-friendly, low in cost and free of subsequent treatment problem; the obtained wood base material ishigh in porosity, reasonable in hole structure distribution, moderate in hole diameter, low in density and excellent in adsorption performance; and the used DES reaction reagent can be used repeatedly, the removed lignin can be recycled, and the utilization rate of resources is improved. The porous structure functional wood base material can perform corresponding modification treatment accordingto different requirements, and is applied to the fields of buildings, medicine, sewage purification and the like.

The invention discloses a preparation method of ultraviolet-shielding transparent wood. The preparation method comprises the following steps: firstly, pretreating wood sample to swell the wood samples, then treating the swelled wood samples by sodium chlorite and glacial acetic, and controlling a delignification process to obtain wood substrates with different lignin content; carrying out dehydration treatment on the sample by adopting an organic solvent gradient method, a freeze drying method or a supercritical drying method to further obtain dehydrated wood substrates with different lignin content; and carrying out dipping by using a pre-polymer which has a refractive index close to the fiber refractive index of a fiber and has high optical transmittance, and then carrying out curing. Through exploration of the ultraviolet shielding property of the transparent wood with different lignin content, the transparent wood with an ultraviolet shielding function is obtained. The obtained ultraviolet-shielding transparent wood has extremely good ultraviolet shielding characteristic and high light transmission, wherein the ultraviolet shielding effect reaches 90%, and light transmittance reaches 73% or above.

An apparatus for thermo-transformation of wood planks comprises a chamber delimited by upright perforated walls, a top wall and end walls and having a closable entry for receiving wood planks into the chamber. A shell surrounds the chamber and is spaced therefrom to define a first vertical plenum with the first perforated wall, a second vertical plenum with the second perforated wall, and a horizontal plenum with the top wall. A ventilation system is in fluid communication with the plenums to produce a flow of heated air in the plenums. Vanes are actuatable to close/open access to the vertical plenums, to allow heated air into at least one of the vertical plenums, through the chamber via the perforated walls, and out from at least the other of the vertical plenums, to return to the ventilation system. A method for the thermo-transformation of wood is also provided.

The invention discloses a high quality staining method for tables and chairs. The high quality staining method for tables and chairs comprises the following steps of: (1) surface treatment of a wood; (2) irradiation treatment; (3) acetylating treatment; (4) staining treatment; and (5) poikilothermic treatment. The staining method for tables and chairs is specially improved, so that the staining dye-uptake and the staining stability are effectively enhanced, the comprehensive using quality of the tables and chairs is enhanced and the service lives of the tables and chairs are prolonged, so that the high quality staining method for tables and chairs has very good promotional value and economical benefit.

The invention discloses a moth-resistant treating method for wicker straw. The method comprises the following steps: (1) pretreating straw raw materials; (2) preparing a moth-resistant treating solution; (3) modifying; (4) treating at low temperature; (5) repeatedly treating for the second time; (6) weaving at constant temperature. The straw treated according to the method provided by the invention has better moth-resistant and mold-proof characteristics, excellent flexibility, folding resistance, tensile strength and weaving property; the prepared products have the characteristics of environmental protection, safety and no harm to a human body; the service life of the products is 2-3 years longer than that of the products prepared according to the conventional method; the popularization value is higher.

The invention relates to the technical field of wickerwork artware and discloses a treatment method of wickerwork raw material wickers. The method comprises the following steps that (1) newly-cut wickers are dewatered through natural drying, the high temper of the wickers is improved, heating treatment is conducted in alkaline water, thus peeling is facilitated, the glossiness of the wickers can be improved, and cold treatment is conducted after peeling; (2) the wickers subjected to cooling treatment are immediately steeped through a steeping solution A, the steeping solution can be rapidly adsorbed by fibers with negative charges under the effect of positive charges in the aqueous solution, a thin film is formed on the surface of each fiber, binding force among the fibers is reinforced, and shrinkage deformation of the fibers is prevented; and (3) the wickers are heated and baked in a drying oven after being steeped by the steeping solution A and then put into a steeping solution B for steeping, the steeping solution B has oxidation resistance and heat stability, connection points among the fibers are protected, and heating deformation of the fibers is prevented.

The invention belongs to the technology of wood science and technology specialty emphasis in the forestry engineering field, and particularly relates to a bamboo multi-micropore treatment method as well as a product and an application. The bamboo multi-micropore treatment method comprises the following steps of: (1) taking materials; (2) performing saturated water treatment: performing saturated water treatment on bamboo; (3) performing pre-freezing treatment: cooling treated bamboo and preserving the heat; (4) performing freezing treatment: freezing bamboo treated in step (3); (5) performing vacuum drying: performing vacuum drying on the bamboo treated in step (4); and (6) storing: performing sealing storage on the bamboo treated in step (5). The bamboo has porosity of 57%-83%, and moisture content of 6%-12%. Subsequent processing for the bamboo comprises the following steps of: bamboo drying, bamboo recombining and bamboo anti-corrosion mildew-proof treatment. The bamboo is treated through special means, and the freeze-dried bamboo is processed subsequently, so that the multi-micropore structure of the bamboo is realized, and permeability of the bamboo is improved.

The invention provides a method for preparing antibacterial and anti-ultraviolet wood, comprising sequentially using wood impregnating solution A and wood impregnating solution B to impregnate wood, wherein the wood impregnating solution A is an aqueous solution of zinc salt, and the wood impregnating solution B Aqueous solution of alkali. The invention also proposes the material prepared by the preparation method. The wood treatment process proposed by the present invention uses a wet chemical method to generate nano-zinc oxide in situ inside the wood. The binding force between the nano-particles and wood components is strong, it is not easy to be lost, and the modification effect is long-lasting. The wood treatment method can not only endow the wood with excellent antibacterial properties and anti-ultraviolet properties, but also has good thermal stability.

The invention belongs to the technical field of rattan processing, in particular to a softening method for improving rattan weaving performance. The specific method is as follows: (1) put the harvested rattan into a freezer for constant temperature freezing, take it out, and treat it with constant temperature steam to obtain One-time treatment of rattan; (2) Immerse the primary treatment of rattan in the softening solution and pass it through ultrasonic waves for ultrasonic treatment, drain the liquid, wrap it with plastic wrap, put it in a refrigerator for constant temperature refrigeration, take it out, and uncover it (3) Microwave-dry the rattan for the second treatment; the rattan treated by the present invention has a bending angle of 80-81 degrees during weaving and use, which effectively reduces the difficulty of weaving, It saves time and labor, improves weaving efficiency, not only does not deform and crack, has strong bearing capacity, good dimensional stability, tensile strength, compression resistance and elastic strength have been greatly improved, but also can improve its antibacterial and anti-sunshine ability, and inhibit spoilage bacteria growth, prolonging its lifespan.

The invention relates to a method for wood color preserving and degreasing and belongs to the technical field of wood treatment. According to the method, to-be-degreased wood is soaked with water, sprayed with liquid nitrogen, frozen and dried to obtain dry wood; the dry wood is subjected to micro-blasting to obtain pre-treated wood; tea bran is ground, mixed with water, subjected to heating boiling and centrifugal treatment, and separated to obtain upper layer liquid, the upper layer liquid is concentrated to obtain concentrated liquid, and then the concentrated liquid, a sodium bicarbonate solution, potassium permanganate and the like are evenly stirred to obtain self-prepared degreasing color preserving liquid; and then the self-prepared degreasing color preserving liquid is put into a steam generator, the pre-treated wood is treated through steaming, and wood degreasing can be finished. Wood permeability is effectively improved, the wood degreasing rate is remarkably increased, and meanwhile the good color preserving effect is achieved.

The invention discloses a making-old treatment method for a wooden product. The method comprises the first step of wooden product pretreatment, the second step of making-old treatment and the third step of drying quality keeping treatment. The method is overall simple and high in treatment efficiency, and the making-old treatment can be finished in one day. Compared with the traditional treatment manners in which the making-old treatment is finished in at least one week and even in one month, the work efficiency is greatly improved, and the manufacturing cost is reduced. The surface of the wooden product subjected to making-old treatment is smoother and more compact, the humidity resistance is better, and the water absorbing rate is reduced by about 15%. During using, the cracking rate is reduced by about 20%, the durable duration of the wooden product is prolonged by 10% or more, and the using value is high.

The invention belongs to the technical field of weaving, and particularly relates to a method for improving the moisture-proof and waterproof performance of palm leaves. The method comprises the following steps that (1) the harvested palm leaves are immersed in chitosan solution for heat preservation and immersing, the palm leaves are taken out after the solution drains, and the palm leaves are subjected to high-temperature high-pressure steam treatment and then cooling treatment; (2) the palm leaves are placed into an electric field for electric field treatment and are immersed in an impregnating agent for immersing, the palm leaves are taken out after the agent drains, wherein the impregnating agent is prepared from the following raw materials of propolis, alkyl glycoside, sodium alginate, coagulating polysaccharide, kaolin, sodium chloride, borax and water; and (3) the palm leaves is subjected to constant-temperature freezing treatment, and is dried to constant weight. According tothe method, the surfaces of the palm leaves can be effectively isolated from the outside environment, a woven product of the palm leaves is protected from being influenced by an external rainwater moist environment, a high-efficiency moisture-proof and waterproof effect is achieved in daily use, the service life is prolonged, moreover, the phenomena of cracking or breakage in the weaving and usingprocesses are effectively avoided, and the weaving utilization rate of the palm leaves is greatly improved.