84 results about "Softwood" patented technology

The invention discloses a cellulose paper-based diaphragm for a zinc-iodine battery as well as a preparation method and application of the cellulose paper-based diaphragm. The diaphragm is of a three-layer composite structure and comprises a matrix layer formed by paper pulp fibers such as softwood pulp, hardwood pulp, bamboo pulp or straw pulp through a wet papermaking technology, and compact functional layers which cover the two sides of the matrix layer and are formed by oxidized nanocellulose (TOCN). The preparation method mainly comprises the following steps: preparing the paper-based diaphragm matrix through wet papermaking, coating the two sides of the paper-based diaphragm matrix with TOCN aqueous dispersion, and finally carrying out hot-pressing drying treatment to enable the three layers to be tightly combined. According to the invention, the nano aperture and the surface negative electricity functional group of the TOCN layer are utilized, so that physical blocking and electrostatic repulsion of polyiodide ions can be realized at the same time, and the shuttle effect is effectively inhibited; and the uniform pore channels can guide zinc ions to uniformly deposit and inhibit dendritic crystal growth. The diaphragm is green in raw material, simple in process and low in cost, and the cycle life and coulombic efficiency of the battery can be remarkably improved when the diaphragm is applied to the zinc-iodine battery.

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 100 g / m2, wherein an optimal combination of nonrecycled BCP, BCTMP and recycled pulp obtained from release liner supercalendered Kraft paper is used to adjust the properties of the fiber furnish. While the use of BCTMP enables a product having a higher bulk, the recycled pulp component, which has high compatibility with the paper manufacturing process, enables to balance the manufacturing process and reduce the dimensional changes and shrinkage of the formed SCK paper. The combined presence of the BCTMP and the recycled pulp component in the fiber furnish improves the water removal from the fibers during the SCK paper manufacturing, while the presence of non-recycled BCP produced from softwood improves the formation and runnability of the paper web on the paper machine. This enables to produce SCK paper with improved sustainability, wherein the density may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner.

In a release paper consisting of a backing paper layer coated on at least one side with PVOH and a silicone coating on at least one side, in which the backing paper layer coated on at least one side with PVOH consists of bleached kraft paper, containing at least up to 30 wt. % softwood and hardwood with a total freeness between 30 °SR and 42 °SR, preferably between 33 °SR and 38 °SR, and processing aids, and also a release layer which is applied at least on one side to the PVOH-coated side of the backing paper layer and consists of 0.5 to 5 g / m2 of a silicone, and wherein the release paper coated at least on one side with PVOH and silicone has a density between 850 and 990 kg / m3, preferably between 900 and 970 kg / m3, and a method for producing a release paper.

The preparation method of the environment-friendly anti-aging packaging base paper comprises the following steps: taking softwood pulp and dissolving pulp, pulping for the first time, adding microcrystalline cellulose, and stirring to form first pulp; adjusting the pH value of the first slurry to be neutral, adding a water-soluble chitosan-polyphenol compound, and pulping for the second time to form second slurry; adding oxidized sodium alginate into the second pulp, and pulping for the third time to form third pulp; forming raw paper according to a papermaking process; the invention further provides packaging base paper which has the characteristic of good anti-aging performance. Softwood pulp and dissolving pulp are used as papermaking raw materials, microcrystalline cellulose, a water-soluble chitosan-polyphenol compound and oxidized sodium alginate are used, a pulping process which is sequentially added according to a sequence is formed, a stable fiber network is constructed layer by layer, and a mechanism of skeleton supporting, covalent crosslinking and antioxidant end capping is formed. The anti-aging performance of the raw paper is improved.

The invention relates to the technical field of battery diaphragms, in particular to a wood fiber composite diaphragm and a preparation method thereof. According to the diaphragm, renewable softwood pulp is used as a basic raw material, after aldehyde groups are introduced through sodium periodate oxidation, tannic acid, zinc acetate and cystamine are utilized to synergistically construct a zinc coordination network functional layer; then, molecular crosslinking with methoxypolyethylene glycol, polyethylene glycol, hexamethylene diisocyanate, gamma-aminopropyltriethoxysilane and nano silicon dioxide is realized under the action of a catalyst; and finally, the paper-making and hot-pressing processes are performed to prepare and mold. The diaphragm is particularly suitable for being applied to high-safety and high-performance aqueous metal zinc batteries, and an innovative technical path is provided for industrialization and green upgrading of zinc ion battery diaphragm materials.

The utility model discloses a kind of transfer devices for cork furniture, belong to furniture transport technical field.It includes vehicle plate, handle and universal wheel.Vehicle plate below installs universal wheel and is convenient for moving, above welding handle, two slide rails are installed on vehicle plate, and circular limit block with roller inclined rail is correspondingly set in one end of slide rail.Adjusting assembly is rotated by hand wheel drive screw column, drive screw block and bearing connection slider connecting column lateral movement of it, core effect is to pull fixed plate and its connecting roller from roller inclined rail to slide rail, realize accurate positioning and transport of furniture on device.Rope automatic recovery assembly is automatically recovered by clock spring drive reel, in combination with ratchet and pawl anti-loosening mechanism and guide rope board, cooperate with rope binding column to realize furniture fast binding and fixing.Solve the problem that furniture is laborious in traditional transfer, fixed operation is complicated, with loading positioning accurate, binding convenient and the like advantages, significantly improve the safety and efficiency of cork furniture transfer.

The present application belongs to the technical field of composite materials, and particularly relates to a plant fiber molded composite material, a preparation method thereof and an integrated system. The present application utilizes softwood to perform softwood pitch leaching-plant fiber modification-softwood pitch plastic extrusion integrated process, directly performs surface modification on the plant fiber by using the softwood pitch leaching liquor, reduces the surface polarity of the plant fiber and improves the performance of the composite material. The present application reduces the modification cost in the forming process of the plant fiber molded composite material while utilizing waste, and further crosslinks and extrudes to form softwood pitch plastic after concentrating the softwood pitch leaching liquor to prepare softwood pitch, so as to coat, strengthen and protect the plant fiber molded core material, prepare high-strength and high-stability full-green plant molded material, and provide technical support for the development of the softwood and plant fiber industry.

The application discloses a strength-heat preservation-decoration integrated laminated structure wood composite material and a preparation method thereof, and comprises at least two pieces of outer layer materials and an intermediate layer; the outer layer material is wood containing nanocellulose and water-based resin; and the intermediate layer is a blend of cork particles and polylactic acid. The nanocellulose and the water-based resin are dissolved in an alkaline solution to obtain a mixed solution, the mixed solution is treated by impregnation into the wood, and the outer layer material is obtained after hot pressing; the cork particles and the polylactic acid are blended and hot-pressed to obtain the intermediate layer; the two pieces of outer layer materials and the piece of intermediate layer are cold-pressed and glued together to obtain a three-layer composite material of outer layer material-intermediate layer-outer layer material; and a customized pattern is directly printed on the surface of the three-layer composite material by using a digital jet printing technology, so that the strength-heat preservation-decoration integrated laminated structure wood composite material is prepared. The application solves the problem of lack of multifunctional integrated wood materials in fabricated wood structure buildings.

An insulating radiant barrier sheathing product formed by directly bonding or applying an insulating radiant barrier (IRB) material to the interior surface (i.e., facing the attic or other interior space) of a wood, wood-based, manufactured wood, or cellulosic panel or structural or sheathing panel. The IRB panel product may be used as a roof sheathing panel, with one or more outer protective and finishing layers applied to the outer surface, such as, but not limited to, an underlayment and roofing shingles. The IRB material may comprise a mixture of a radiant barrier (RB) paint and a granulated insulating material. The granulated insulating material may comprise cork, EPS, XPS, poly-iso, other similar insulating material, or combinations thereof. Alternatively, the IRB material may comprise a reflecting bubble-wrap layer.

The present invention is directed to a film or coating comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said film or coating also comprising at least 1% by weight of extractives from wood bark or cork wood. The invention is also directed to products, such as packaging materials, using or incorporating said film or coating. Such packaging materials are for example laminates or multi-layer structures. The films or coatings according to the present invention having advantageous barrier properties and are therefore particularly suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The present invention is also directed to a composition comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said composition also comprising at least 1% by weight of extractives from wood bark or cork wood. The composition is useful for example in the preparation of the film or coating.

The invention relates to the technical field of paper, in particular to white kraft paper with ultrahigh folding resistance and a preparation method of the white kraft paper. The method comprises the steps that bleached softwood and hardwood pulp are mixed and then shunted, part of pulp is oxidized through a TEMPO / NaBr / NaClO system and subjected to high-pressure homogenization treatment to obtain nanocellulose, and then the nanocellulose is compounded with base pulp; a xylan-chitosan interface reinforcing agent I and a chitosan-dihydrocaffeic acid-polyethylene glycol diglycidyl ether interface reinforcing agent II are prepared at the same time; the composite paper pulp, a reinforcing agent, cationic starch and other auxiliaries are sequentially mixed and then formed, and squeezing, steam drying and heat aftertreatment at 120-125 DEG C are carried out. The obtained kraft paper remarkably improves the folding resistance number through the synergistic effect of a multi-scale fiber network and interface reinforcement, has high strength, high flexibility and excellent whiteness, and is suitable for a high-frequency folding packaging scene.

A new and distinct cultivar of Chionanthus retusus tree named ‘CRMTF’ is disclosed, characterized by a fast growth rate, prolific white flowers and dark green foliage. The new variety is easily propagated by softwood cuttings. The new variety is a Chionanthus tree, typically used for landscapes and gardens.

This invention discloses a method for modifying fluff pulp, which can effectively increase the porosity between fibers, thereby improving its liquid conductivity. The preparation method includes the following steps: treating different types of softwood pulp boards with ultrasonic waves and 1,2,3,4-butanetetracarboxylic acid (BTCA) crosslinking. Ultrasonic pulverization effectively reduces the bonding force between fibers, while the polycarboxylic acid crosslinking method gives the fibers a large number of pores, improving fiber bulk and fixing fiber morphology. After this treatment, the fiber morphology shows significant curling, twisting, and indentation, thus affecting its liquid conductivity. The fluff pulp modification method of this invention uses commercial softwood pulp boards as raw materials. Through a simple and easy modification method, it effectively overcomes the shortcomings of domestically produced fluff pulp, such as slow absorption rate, long liquid absorption time, and low bulk, thus improving production efficiency.

The application discloses an environment-friendly sound insulation board combined with softwood and hardwood, which comprises a first softwood layer, a second softwood layer, a third hardened wood layer and a hardwood layer which are sequentially attached, wherein the thickness of the first softwood layer is 3-8 mm, the thickness of the hardwood layer is 6-12 cm, the density of the second softwood layer is 160-190 kg / m3 and the thickness is 3-8 mm, and the density of the third hardened wood layer is 250-270 kg / m3 and the thickness is 10-15 mm. The ecological environment-friendly sound insulation board combined with softwood and hardwood solves the manufacturing method of the traditional sound insulation board, has the characteristics of firm durability, natural grain, convenient construction, safety and environmental protection, sound absorption, heat insulation, durability, comfort and strong warmth, has strong adaptability, can be combined with other materials, can maintain strength while reducing the application of hardwood, and uses cheaper softwood and oak bark to replace hardwood, and has an advantage in price.

The invention discloses a cutting propagation method for sinojackia xylocarpa, and belongs to the technical field of plant asexual propagation. The cutting propagation method of the sinojackia xylocarpa comprises the following steps: immersing cutting slips of the sinojackia xylocarpa into an ethylicin solution, and then inserting the cutting slips into a cutting medium for cultivation. By means of the cutting propagation method, the cutting rooting rate of the twigs of the sinojackia xylocarpa can be remarkably increased by controlling the cutting time, the cutting environment, the cutting treatment, the cutting medium and other factors, the highest cutting rooting rate after two months can reach 90%, and the highest cutting rooting rate after three months can reach 80% or above. The cutting propagation method provided by the invention is simple and rapid, low in cost and easy to implement on a large scale.

The invention discloses a single-component bio-based epoxy formaldehyde-free adhesive and a preparation method thereof, and relates to the field of adhesives for formaldehyde-free plywood production. The adhesive comprises the following raw materials in parts by weight: 10-20 parts of water, 1-2 parts of cellulose, 0-10 parts of a styrene-acrylic acid copolymer emulsion, 0.1-1 part of a wetting agent, 0.1-1 part of a dispersing agent, 10-20 parts of an acrylate copolymer emulsion, 10-20 parts of an ethylene-vinyl acetate copolymer emulsion, 10-30 parts of an epoxy emulsion, 10-30 parts of starch, 0-10 parts of a polyacrylamide solution, 1-2 parts of an accelerant and 1-2 parts of a pH regulator. 0.1-1 part of a defoaming agent; 0.1-1 part of a mildew preventive; the adhesive disclosed by the invention has the characteristics of long activation period, high bonding strength, good wood breaking effect, high adhesive film hardness, secondary activation of glue through thermal activation and the like; the method can obviously prolong the use time of the glue at the application end, fundamentally improves the pain point that the plywood is long in process time and cannot be segmented, enhances the comprehensive performance of the plywood, and can be applied to soft and hard wood base materials and compact wood.

1. The name of the design product: yoga mat (softwood-mountain peak). 2. The use of the design product: for sports, fitness mat. 3. The design points of the design product: in the pattern. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a thin product, omitting the left view, right view, top view, bottom view.

The utility model discloses an insulation noise reduction structure of an extra-high voltage oil-immersed shunt reactor, which comprises a plurality of layers of insulation partition plates, a cork rubber pad, a non-adhesive laminated wood fastener, a hot-pressed polyester resin plastic laminated board fastener and a lastrum laminated wood bracket, and the two adjacent layers of insulation partition plates are separated by the cork rubber pad. And the insulating partition plate is fixed on the box wall of the extra-high-voltage oil-immersed shunt reactor through the cork rubber pad, the non-adhesive laminated wood fastener, the hot-pressed polyester resin plastic laminated board fastener and the Lushi laminated wood bracket. The insulation noise reduction structure has enough mechanical strength and certain flexibility, integrates the advantages of reliable mechanical structure, reliable insulation, noise absorption and the like, and solves the problems of high ground potential field intensity and low noise attenuation in a high-voltage line end outgoing line area. The low-noise electric reactor has the advantages of being capable of improving the ground insulation strength of the high-voltage line end and absorbing and attenuating noise, and is suitable for the design of low-noise electric reactors with the grade of 750 kV to 1100 kV.

The invention discloses a rhododendron dauricum twig cutting propagation method, and belongs to the technical field of plant propagation. According to the method, a complete rhododendron dauricum twig cuttage system is formed through cooperation of cutting slip treatment, matrix bearing, environment regulation and control and final-period management, precisely treated cutting slips take roots in a proper cuttage bed matrix, a greenhouse system provides a stable temperature and humidity environment, continuous growth of seedlings is guaranteed through staged management, and the survival rate of the seedlings is increased. Finally, three core objectives are achieved: firstly, the cuttage survival rate is increased (greater than or equal to 90%), and the problem of low traditional propagation efficiency is solved; 2, good characters of stock plants are stably reserved, and character separation of seed propagation is avoided; large-scale and standardized production of seedlings is achieved, high-quality seedlings are provided for ecological protection, landscape architecture and industrial development, and sustainable utilization of rhododendron dauricum resources is promoted.

The invention relates to a process for manufacturing wood pellets from woody green waste, comprising the following steps: - collection of woody green waste (1), - coarse shredding of the woody green waste (2), - fine shredding of the first shredded material and a second shredded softwood material (3), by inserting the first and second shredded materials into at least one shredder, - drying of the first and second shredded materials (4), in at least one dryer, - mixing of the first and second shredded materials (5), in at least one mixer, - granulation of the resulting mixture (6), in at least one pellet press. The invention further relates to an installation for implementing a process according to the invention. Figure for the abstract: Fig 1

The invention provides water-resistant bobbin base paper and a process thereof, and the bobbin base paper comprises the following components in parts by weight: 80-120 parts of a natural wood fiber raw material, 3-9 parts of chitosan, 4-12 parts of a waterproof emulsion, 3-9 parts of a treating agent, 2-6 parts of a defoaming agent, 1-3 parts of a sterilizing agent and 2-4 parts of a cross-linking agent, the natural wood fiber raw material is one or a mixture of more of commercial paper pulp, waste paper and straw agricultural wastes; the commercial paper pulp is one or more mixed pulp of bleached softwood pulp, bleached hardwood pulp, dissolving pulp or unbleached paper pulp, the preparation process is simple, the prepared bobbin body paper has the advantages of high strength, water resistance and easiness in printing, meanwhile, the bobbin body paper also has excellent waterproof performance, and the service life of a bobbin paper product is prolonged.

The invention belongs to the technical field of papermaking, and particularly relates to a preparation process of gypsum board covering paper. The preparation process of the gypsum board covering paper comprises the following steps: preparing deinked pulp: taking recycled office waste paper as a raw material, and sequentially carrying out pulp repulping, heavy slag removal, screening, purification and heat dispersion treatment to prepare the deinked pulp; pulp preparation, wherein surface layer pulp is bleached sulfate hardwood pulp and deinked pulp; core layer pulp is unbleached sulfate softwood pulp, OCC long fiber pulp and OCC short fiber pulp; the bottom layer slurry is OCC short fiber slurry and OCC medium fiber slurry; and papermaking: performing sizing, slushing and pressurized screen purification on the prepared surface layer slurry, the core layer slurry and the bottom layer slurry respectively, and performing a papermaking process to obtain the gypsum board covering paper. According to the preparation process of the gypsum board covering paper, the strength is high, the stability is good, the whiteness of the gypsum board covering paper is high, the cleanliness is high, and the cost is controllable.

The utility model discloses a novel cork cutting device, including support, the rotatable connection of support between has rotary frame, the inside of rotary frame is provided with cutting piece, two sliding positioning frames that symmetrical are provided with on the inlet plate upper end, the outside of rotary frame evenly is provided with a plurality of press down sliding wheel. Through above -mentioned structure, support one side fixedly connected with inlet plate, and the cross fixed connection of movable block has a plurality of movable arc block, and the upper end fixed connection of movable block has sliding positioning frame, make it can place cork between sliding positioning frame and movable block, make it convenient to cut with different cork positioning place in the middle of support, and the rotatable connection of support middle has rotary frame, and the lower extreme of rotary frame is provided with first motor, and the inside of rotary frame is provided with cutting piece, make it convenient to press tightly cork cutting and not easy to shake up and down at will, and the upper end has good limiting effect, and can rotate cutting piece to different position and cut in different direction.

The invention discloses a tree peripheral bark callus inducer as well as a preparation method and a use method thereof, and belongs to the technical field of plant tissue hyperplasia. The inducer is prepared by mixing the following components in parts by mass: 900 to 1100 parts of water, 90 to 130 parts of a humectant, 0.01 to 0.5 part of a proliferation agent and 0 to 15 parts of a protective agent. When the inducer is prepared, firstly, water is heated to 50-60 DEG C, under the condition of heat preservation, the humectant weighed according to the proportion is added and fully stirred to be dissolved, then the protective agent weighed according to the proportion is added and fully stirred to form a homogeneous system, then the temperature is reduced to the room temperature, the inducer weighed according to the proportion is added, and the homogeneous system is formed after the inducer is fully stirred again. When in use, the inducer is prepared according to the formula proportion and the method; the composition is sprayed on a fresh wound surface of a peeled bark, the dosage is 0.06-0.10 ml / cm < 2 >, and then the wound surface is wrapped by a degradable film. The inducer can effectively shorten the callus time of peridermis, promote the formation of hyperplastic tissues, increase the growth amount of cork and improve the quality uniformity of the cork.

This invention provides a method for preparing barrier-type flesh-coated base paper, comprising: mixing softwood pulp and hardwood pulp at an oven-dry weight ratio of (30-40):(60-70), beating the pulp to a freeness of 36-42°SR, and sequentially adding a wet strength agent and a retention aid; after forming the pulp, when the wet paper sheet dryness is 23-30%, using 90-120... The paper is pressed under a linear pressure of kN / m, then dried and creased at 15-22% to obtain the base paper for wrapping meat. Through the synergy of the above processes, the resulting base paper has a density ≥0.60g / cm³, an air permeability of 1.0-5.0μm / (Pa·s), a 60-second Cobb value ≤35g / m² for refined lard (35℃), and a wet tensile strength significantly higher than that of ordinary kitchen paper. This invention effectively solves the problems of easy tearing and oil leakage when conventional kitchen paper is used to wrap fresh meat at a cost close to that of household paper, while also having good air permeability.

The invention provides base paper for food card paper and a preparation method thereof. The surface layer pulp comprises bleached sulfate softwood pulp, bleached sulfate hardwood pulp and finely ground bleached sulfate hardwood pulp, and the proportion of the bleached sulfate softwood pulp is 30 + / -5%, the proportion of the bleached sulfate hardwood pulp is 50-60%, and the proportion of the finely ground bleached sulfate hardwood pulp is 10-20%. According to the surface layer slurry of the body paper for the food paperboard, provided by the embodiment of the invention, on the premise that a production process of the body paper for the food paperboard is not greatly changed, a process of water adhesion of the food paperboard can be improved only by changing and optimizing the proportion of the surface layer slurry, so that the surface layer slurry has a relatively high cup beating yield, and the production cost is reduced. And meanwhile, the requirements of customers on strength, printing and other properties can be met, and the market application prospect is great.

The invention provides a piezoelectric phase change six-layer moisture-proof corrugated board. The corrugated board is of a six-layer structure sequentially compounded from outside to inside, wherein an antistatic piezoelectric layer is formed by lead zirconate titanate nanoparticles and polyvinylidene fluoride through electrostatic spinning; the moisture-proof functional layer is formed by compounding a polyurethane emulsion, a fluorine-containing compound with the carbon atom number larger than or equal to 6 and hydroxypropyl chitosan, the hydrophobic adhesive interface layer is formed by mixing acrylic resin and TiO2 nanoparticles and then conducting UV curing, and the contact angle is larger than or equal to 110 degrees; the fine honeycomb composite corrugated layer is formed by arranging G corrugations, F corrugations and V-shaped compression-resistant corrugations in a staggered manner, gaps among corrugation teeth are filled with nano silicon dioxide aerogel containing more than or equal to 30% of regenerated cellulose, and the water absorption rate is less than or equal to 1.5%; the phase change temperature control layer is composed of a paraffin / expanded graphite shape-stabilized phase change material, and the paraffin adsorption rate is larger than or equal to 90%; the nano reinforced base material layer is prepared from 60% of softwood pulp, 40% of hibiscus cannabinus stem pulp and red seaweed gel modified nano calcium carbonate. A dynamic damp-proof, compression-resistant and temperature-control cooperative system is realized, and the comprehensive cost is effectively reduced.

The application discloses a high-elasticity composite cork floor without formaldehyde, which is composed of a surface layer, a supporting connection layer, a hard wood composite layer, a soft wood composite layer and a bottom hard wood layer which are bonded layer by layer from top to bottom. The high-elasticity composite cork floor is composed of the surface layer, the supporting connection layer, the hard wood composite layer, the soft wood composite layer and the bottom hard wood layer which are bonded layer by layer. The surface layer is soft wood with desired patterns. The supporting connection layer is a connection layer made of relatively hard material in the range of soft wood and used for buffering and supporting. The hard wood composite layer and the soft wood composite layer are hard wood blocks and soft wood blocks which are arranged alternately and used as the buffering layer of the whole upper layer of the floor after bonding. The hard wood blocks and the soft wood blocks have the effect of hard wood supporting and the effect of soft wood elasticity. The high-elasticity composite cork floor effectively solves the problem of uneven elastic force distribution of the whole structure when a local force is applied to the existing composite cork floor which is composed of bonded plates.