39results about How to "Good moth resistance" patented technology

The invention relates to natural floride-free edible transparent health-care toothpaste for children, and belongs to the technical field of daily necessities. The natural floride-free edible transparent health-care toothpaste for the children is prepared from an adhesive, a foaming agent, a humectant, a sweetener, an abradant, perfume, deionized water, a preservative, pearl powder, milk calcium, vitamin E acetate, calcium gluconate and zinc gluconate and by a conventional method. Through the common action of the vitamin E acetate, xylitol, the pearl powder, the milk calcium, the zinc gluconate and the calcium gluconate, the natural floride-free edible transparent health-care toothpaste can remove peculiar smell, bacteria and the like in oral cavities effectively, improve the antiviral capability of teeth, has the obvious prevention and treatment effects on periodontitis and gingivitis and anticariesaction, ensures abundant calcium absorption, and realizes the nutrient and health-care effect on the teeth of 6 to 12-year-old children in dental transitional periods.

The invention discloses a coil PVC (Polyvinyl Chloride) flocked carpet which comprises a coil PVC base layer and a flock layer, wherein the coil PVC base layer comprises a first PVC foaming layer, a glass fiber mesh layer, a second PVC foaming layer and a PVC anti-skidding base layer; the glass fiber mesh layer is clamped between the first PVC foaming layer and the second PVC foaming layer; the PVC anti-skidding base layer is fixed on the lower surface of the second PVC foaming layer; a flocked glue layer is coated on the upper surface of the coil PVC base layer; and the flock layer is adhered to the upper surface of the coil PVC base layer by the flocked glue layer and is formed by densely arranging a plurality of independent flocks, and all the flocks are vertically adhered to the upper surface of the coil PVC base layer. The coil PVC flocked carpet has the advantages of easy cleaning, noise prevention, moth prevention, flame retardancy, water tightness, mould prevention, abrasion resistance, static electricity resistance, and the like and has comfortable and soft hand feeling and foot feeling and strong pattern representability.

The invention discloses a novel green flame-retardant waterproof wood-plastic composite material and a preparation method thereof. The novel green flame-retardant waterproof wood-plastic composite material comprises, by weight parts, 8-10 parts of polyurethane elastomer, 30-40 parts of ethylene-vinyl acetate copolymer, 8-12 parts of smoke suppression flame retardant, 7-9 parts of composite fiber,5-7 parts of coupling agent, 4-8 parts of inorganic filler, 40-60 parts of waste wood, 10-20 parts of modified bamboo powder, 2-4 parts of fragrant wood powder, 30-50 parts of polyvinyl chloride resin, 8-12 parts of anti-wear additives and 10-14 parts of processing aids. The novel green flame-retardant waterproof wood-plastic composite material has good anti-moisture, abrasion resistance, corrosion resistance and flame retardant effect, and has excellent antibacterial and anti-insect property; at the same time, in the preparation method, a large amount of waste wood is adopted, which saves resources and protects the environment, the cost is low, the raw materials are easy to obtain, a process is simple, and the novel green flame-retardant waterproof wood-plastic composite material has highpractical value and good application prospects.

The invention relates to a gingko wood EO moisture-proof health care type particle board. The raw material comprises 100 percent gingko wood shavings, water, EO moisture-proof type adhesion agent. The invention has the advantages that the material combination is reasonable and simple. The production method is practical, the manufactured particle board is superior to the standards of the utilized structure plate requirements under the damp state, the formaldehyde releasing quantity of is lower than the standards of F4 grade plate requirements in the Japanese JISA5908 standards, the invention has the special medicine fragrance of the gingko wood, the invention prevents corrosion, and worm eating, the invention has the certain auxiliary physical therapy effect to high blood cholesterol and cardio-cerebral-vascular disease, the invention is suitable for the plates for high standard indoor furniture and environment-protective and health care furniture, and the invention has better performances of corrosion prevention, vermin prevention and flame prevention.

The invention relates to the processing field of paper products and discloses regenerated environment-friendly writing paper. The regenerated environment-friendly writing paper contains the following raw materials in parts by weight: 180-200 parts of waste paper pulp, 20-30 parts of leaf pulp, 6-9 parts of ramie size, 5-8 parts of apocynum venetum size, 3-5 parts of cetanol, 1.2-1.5 parts of a coconut oil derivative, 0.2-0.5 part of polyacrylonitrile fiber, 0.1-0.2 part of dimethylformamide, 0.05-0.07 part of zinc chloride, 0.02-0.03 part of tourmaline powder, 0.01-0.02 part of sodium copper chlorophyllin, 0.004-0.006 part of tea polyphenol, 0.005-0.006 part of an antimicrobial deodorant and 0.001-0.002 part of plant essential oil. Waste paper pulp is adequately utilized, and auxiliary materials are added, so that the problem that strength of the waste paper pulp is reduced is solved; and furthermore, the regenerated environment-friendly writing paper has the characteristics of being smooth to write, strong in water resistance, good in glossiness, capable of inhibiting bacteria, environmentally friendly and the like.

The invention discloses a surface layer coating agent coating device for wicker basket weaving wickers, and relates to the field of wicker basket weaving equipment. The surface layer coating agent coating device comprises a conveying table, two conveying wheels, coating sleeves, driving motors, reagent barrels and guiding frames. The conveying wheels are installed in the middle of the conveying table, the coating sleeves are installed outside the conveying wheels, the coating sleeves are of sponge structures, and coating agent injection tubes are installed on the outer sides of the coating sleeves; and the coating agent injection tubes are connected to the reagent barrels through pipelines, the reagent barrels are fixed to the two side edges of the conveying tables, the driving motors areconnected and installed at the bottoms of the conveying wheels, and the guiding frames are further installed at the front end of the conveying table. According to the surface layer coating agent coating device for the wicker basket weaving wickers, the structure is simple, the design is reasonable, using is convenient, conveying of the wickers and coating of a coating agent can be tightly combinedtogether, the process step of independent coating is reduced, and the wicker processing efficiency is effectively improved.

The invention relates to the technical field of cables and provides an insect-resistant composite cable comprising conductors (1). Each conductor (1) is wrapped with an insulation layer (2), the insulation layers (2) are wrapped with a shielding layer (4) which is wrapped with an internal sheath layer (5), the internal sheath layer (5) is wrapped with a flame retardant layer (8) which is wrapped with an external sheath layer (9), cavities (10) are arranged in the external sheath layer (9), insect repellant is arranged in each cavity (10), optical fibers (6) are arranged in the internal sheath layer (5), a waterproof layer (7) is arranged outside each optical fiber (6), each waterproof layer (7) comprises a reinforcing layer, a base layer, a water resisting layer and a coverage layer which are adhered in sequence, the reinforcing layer is copper wire gauze, both the base layer and the coverage layer are non-woven fabric, the water resisting layer is made of mica tapes or glass fibers, the flame retardant layer (8) comprises a mica layer and a basalt fiber braided layer wrapping the mica layer, and the thickness of the mica layer is 0.2-0.9mm.

The invention discloses an environmental protection filling agent used for plywood glue, which is prepared from, by mass, 60-85 parts of inorganic mineral powder, 5-15 parts of organic filler, 1-5 parts of a modifier, 2-10 parts of a thickener, 3-15 parts of an adhesive, and 0.5-5 parts of a curing agent. The inorganic mineral powder includes one or more of sepiolite, diatomite, zeolite and attapulgite; the organic filler is one of starch, flour and protein powder; the modifier includes one or more of resorcinol, melamine, thiourea, azodicarbonamide and alkyl sodium sulfonate; the thickener isone selected from sodium alginate, sodium carboxymethylcellulose and sodium polyacrylate; the adhesive is one of urea resin, phenolic resin, polyvinyl alcohol and sodium silicate; and the curing agent includes one or more of ammonium chloride, zinc chloride and ammonium sulfate. The filling agent has reasonable formula and is lower in addition of flour and more in addition of the inorganic mineral powder, so that the filling agent can adsorb formaldehyde and inhibit mildews, is better in anti-most effect and is lower in manufacturing cost. A plywood is higher in strength and better in comprehensive performance with the filling agent.

The invention provides a solid wood composite board body decoration board and a manufacturing method thereof. The solid wood composite indoor decoration board comprises a board body, a back-coating paint layer, a permeating paint layer and a solid wood film. The board body is a calcium silicate board or a magnesium oxide board, and the front face and the back face of the board body are polished; the back face of the board body is coated with the back-coating paint layer; the front face of the board body is coated with the permeating paint layer; and the back face of the solid wood film is coated with a binder, and the solid wood film is attached to the front face of the board body through the binder.

The invention discloses a bamboo plastic composite for processing a moistureproof, insect-damage-proof and antimicrobial type summer sleeping mat and relates to the technical field of bamboo plastic composites. The bamboo plastic composite is made from the following raw materials, by weight, 20-25 parts of bamboo powder, 10-15 parts of linear low density polyethylene, 10-15 parts of high density polyethylene, 5-10 parts of coconut chaff, 5-10 parts of terpene resin, 3-6 parts of calcined kaolin, 3-6 parts of methylated amino resin, 2-4 parts of powdered acrylonitrile-butadiene rubber, 2-4 parts of sodium carboxymethyl cellulose, 2-4 parts of a toughening agent, 1-2 parts of cationic polyacrylamide, 1-2 parts of nano talcum powder, 1-2 parts of octadecyl trimethyl ammonium chloride, 0.5-1 part of bis(trifluoromethane sulfonimide) and 0.5-1 part of hexamethoxymethylmelamine resin. The bamboo plastic composite is good in forming processing performance, the processed summer sleeping mat has excellent moistureproof performance, insect-damage-proof performance and antimicrobial performance, the using safety is high, the environment protection performance is high, the abrasion resistance, the breathability, the anti-impacting performance and the flame retarding performance are good, and therefore the service life of the summer sleeping mat is prolonged.

The invention provides a PVC composite indoor decoration board and a manufacturing method thereof. The PVC composite indoor decoration board comprises a board body, a back-coating paint layer, a permeating paint layer, a binder and a PVC film. The board body is a calcium silicate board or a magnesium oxide board, and the front face and the back face of the board body are polished; the back face ofthe board body is coated with the back-coating paint layer; the front face of the board body is coated with the permeating paint layer; the permeating paint layer is coated with the binder; and the PVC film is located on the front face of the board body and laid on the binder, and the back face of the board body is vacuumized, so that the PVC film is tightly adsorbed to the front face of the board body.

The invention provides a blended yarn of fine denier nylon yarns, bamboo fibers and viscose fibers. The blended yarn comprises following components in parts by weight: 45-55 parts of the fine denier nylon yarns, 30-40 parts of the bamboo fibers and 20-30 parts of viscose fiber. The blended yarn can complement the characteristics of the fine denier nylon yarns, the bamboo fibers and the viscose fibers and can express the advantages of the three types of fibers.

The invention discloses a processing method for improving the mould-proof and damp-proof performance of bamboo products. The processing method is characterized by comprising the following steps that S1, bamboos are placed into lime water to be soaked, then the bamboos are taken out to be washed, the bamboos are placed into mould-proof liquid to be soaked, and pretreated bamboos are obtained; S2, the pretreated bamboos are filtered and aired; and S3, the bamboos obtained in the S2 are baked and cooled. By means of the processing method for improving the mould-proof and damp-proof performance of the bamboo products, the processing and treating process of the bamboos is optimized, the mould-proof and damp-proof performance of the bamboo products is effectively improved, and the service life of the bamboo products is prolonged.

The invention discloses a foamed aluminum decorative wall painting. The foamed aluminum decorative wall painting is characterized in that a metal drawing board is of a planar structure or a plate-shaped structure with an embossment carved on the front face, a paint layer serving as a calligraphy and painting background is arranged on the surface of the metal drawing board, a color material layer or a color transfer printing layer is arranged on the paint layer, a transparent protective layer is arranged on the color material layer or the color transfer printing layer, and the metal drawing board is a foamed aluminum board or a metal material compounded with the foamed aluminum board. The foamed aluminum decorative wall painting has the following advantages that the overall weight is low, manufacturing materials are saved, the foamed aluminum decorative wall painting is easy to carry and hang, and the hidden danger of falling over time is reduced; when a metal base board is strongly impacted by a heavy object, the metal base board is easy to collapse and deform; a traditional decorative calligraphy and painting carrier can be replaced; the metal drawing board is good in fireproof performance, dampproof performance, insect prevention performance, falling resistance and the like, the defects of a conventional calligraphy and painting carrier are overcome, and the foamed aluminum decorative wall painting can serve as a planar two-dimensional calligraphy and painting and can also serve as a three-dimensional embossment calligraphy and painting; and the foamed aluminum decorativewall painting can serve as the decoration of an overall wall face and a ceiling or indoor and outdoor artistic buildings and the like.

The invention relates to the technical field of doors, particularly to a sound insulation door and a manufacturing method thereof. The sound insulation door comprises a doorframe and door leaves, wherein each door leaf is formed by sequentially compounding a board, an asbestos fiber layer, a soundproof material, an expanded pearlite board, the soundproof material, the asbestos fiber layer and the board; the board edge is arranged at the periphery where the door leaf is matched with the doorframe; a groove is formed in the outer wall of the board edge; a soundproof fireproof layer perpendicular to the bottom surface of the groove is arranged in the groove. According to the sound insulation door provided by the invention, the door leaf is of a multilayer composite layer, and a soundproof effect of 45 decibels can be achieved; moreover, the adopted wooden door plank is attractive, the board and the board edge are treated to achieve excellent flame-retardant and moth-proof effects, and due to the soundproof fireproof layer arranged in the groove at the periphery of the door leaf, sound absorption and fire insulation functions can be realized.

The invention discloses a waterborne polyurethane anticorrosive paint for a moisture-proof and mothproof rattan craftwork. The waterborne polyurethane anticorrosive paint is prepared by the following raw materials in parts by weight: 1-1.5 parts of nano silica hollow spheres, 0.3-0.5 part of camphor oil, 0.1-0.2 part of sandalwood oil, 10-15 parts of a nano cellulose suspension with a solid content of 10-12 percent, 0.3-0.5 part of guar gum, 40-50 parts of waterborne polyurethane resin, 0.5-1 part of octenyl succinic anhydride, 4-6 parts of anhydrous ethanol, 0.05-0.1 part of polyoxypropylene glycerol ether, 0.5-1 part of a Kathon preservative, 1-2 parts of rosin emulsion and 0.5-1 part of calcium sulfate whiskers. The waterborne polyurethane anticorrosive paint disclosed by the invention is good in corrosion resistance, high in toughness, good in binding property with rattan fibers and difficult to crack and fall off and simultaneously has good moisture-proof and mothproof properties and good durability.

The invention relates to a preparation method of moistureproof and mothproof calligraphy and painting mounting paste and belongs to the technical field of preparation of paste. The preparation method comprises the following steps: firstly, carrying out freezing, unfreezing and alkali soaking treatments on pigskin, then degreasing the pigskin with absolute ether and n-butanol respectively, carrying out acid soaking dissolution after degreasing, filtering to obtain viscous liquid, then mixing substances including corn starch and pyroligneous, heating a mixture to obtain a paste substance, mixing the paste substance and the viscous liquid, carrying out ultrasonic treatment on a mixture to obtain an improved paste substance, and finally carrying out reaction on the improved paste substance and substances including vinyl acetate to obtain the moistureproof and mothproof calligraphy and painting mounting paste. The prepared moistureproof and mothproof calligraphy and painting mounting paste is excellent in moisture resistance and moth resistance without rotten due to insect bites within 2-3 years and mildews within 7-10 months, and the retention time is prolonged.

The invention relates to the technical field of stone-plastic wood floors, and particularly relates to a V-SPC stone-plastic wood floor. The V-SPC stone-plastic wood floor comprises a base material layer, wherein a decorative layer is connected to the upper end of the base material layer in a glued mode; a balance layer is connected to the lower end of the base material layer in a glued mode; a wear-resistant layer is arranged at the upper end of the decorative layer; a bottom layer is connected to the lower end of the balance layer in a glued mode; and a tenon and a mortise which correspond to each other are further formed in the side wall of the base material layer and matched with each other. Compared with a solid wood composite floor, the V-SPC stone-plastic wood floor saves wood, improves the stability and can be recycled; compared with a traditional stone-plastic floor, the V-SPC stone-plastic wood floor has the real wood decoration effect and is attractive and elegant; and compared with the solid wood composite floor, the V-SPC stone-plastic wood floor is good in waterproof, dampproof, fireproof and mothproof performance and suitable for various occasions.

The invention relates to a wood plate antique imitation treatment agent. The wood plate antique imitation treatment agent consists of a chemical liquid A, a chemical liquid B and a chemical liquid C, wherein the chemical liquid A is prepared from the following raw materials: 8-12 parts of folium isatidis, 5-9 parts of wild jujube leaves, 1-3 parts of ledebouriella seseloides wolff, 2-4 parts of herba cepbalanoplosis segeti, 12-15 parts of duck bark, 8-12 parts of quick lime and 200 parts of water. The liquid chemical B is prepared from the following raw materials: 3-5 parts of rhizoma sparganii, 2-4 parts of radix stemonae, 1-3 parts of sandalwood, 2-3 parts of rhizoma alismatis, 5-9 parts of sodium hydrogen sulfate and 120 parts of water. The liquid chemical C is prepared from the following raw materials: 3-5 parts of sodium bicarbonate, 4-7 parts of urine and 150 parts of water. After treatment with the chemicals, the wood plate has good capabilities of preventing corrosion and worm eating, greatly enhances the durability of the wood plate and the furniture manufactured of the wood plates, and moreover, after antique imitation treatment, the wood plate cannot fade or discolor in 10-15 years; meanwhile, the treatment agent cannot corrode the internal structure of wood and can prolong the use time of the wood plate.

The invention discloses a preparation method for a straw mat. The method comprises the following steps: a) harvesting mat rush and then soaking in 1% zinc acetate solution and protecting the color; b) finely selecting the mat rush after protecting the color, removing impurities and weaving into a straw mat main body; c) settling the straw mat main body and then disinfecting with steam, putting into a traditional medicine solution, soaking for 3-4 hours and then taking out and airing; d) soaking the treated straw mat main body into tea solution for 1-2 hours, taking out and airing; and e) performing calendaring treatment on the straw mat main body treated in the step d) and then cutting the straw mat main body according to the length and width of the straw mat. The straw mat prepared according to the method disclosed by the invention has an excellent effect of preventing mites. After the straw mat is soaked in the tea solution, the odors can be removed.

The invention relates to a moth-proof film material agent. The moth-proof film material agent is formed by combining production raw materials comprising permethrin, alanine, a styrene-acrylate emulsion, a foaming agent, acidic glycerol, an auxiliary agent and the balance of distilled water in a certain proportion. The film material provided by the invention is a colorless and transparent oily liquid; when in use, the liquid can be directly put into a spraying agent bottle, sprayed to the surface of an object requiring moth prevention and subjected to standing for about 3-5 minutes so that a layer of bright and transparent film is formed on the surface of the object. The moth-proof film material agent provided by the invention is simple in preparation process and convenient in use, can be widely used for spraying of objects easily damaged by moths in multiple places such as families, offices, hospitals and the like. Because the moth-proof film material agent is the bright and transparent film, the self-color of the object can not be influenced, and the good moth-proof effect can also be exerted; and the moth-proof film material agent provided by the invention has the advantages of no toxicity and no pollution, and is suitable for long-term use.

The invention relates to natural floride-free edible transparent health-care toothpaste for children, and belongs to the technical field of daily necessities. The natural floride-free edible transparent health-care toothpaste for the children is prepared from an adhesive, a foaming agent, a humectant, a sweetener, an abradant, perfume, deionized water, a preservative, pearl powder, milk calcium, vitamin E acetate, calcium gluconate and zinc gluconate and by a conventional method. Through the common action of the vitamin E acetate, xylitol, the pearl powder, the milk calcium, the zinc gluconate and the calcium gluconate, the natural floride-free edible transparent health-care toothpaste can remove peculiar smell, bacteria and the like in oral cavities effectively, improve the antiviral capability of teeth, has the obvious prevention and treatment effects on periodontitis and gingivitis and anticariesaction, ensures abundant calcium absorption, and realizes the nutrient and health-care effect on the teeth of 6 to 12-year-old children in dental transitional periods.

The invention provides a foamed aluminum explosion-proof door, and relates to the technical field of door bodies. The foamed aluminum explosion-proof door comprises a door body, the door body comprises a first plate body and a second plate body which are made of metal materials, the thickness of the first plate body and the second plate body is 5mm-10mm, a foamed aluminum block is arranged betweenthe first plate body and the second plate body, the foamed aluminum block is compounded with the first plate body and the second plate body into a whole, and a handle is further arranged on the doorbody; and an uneven surface is formed on the outer surface of the foamed aluminum block, bonding layers are arranged on the upper surface and the lower surface of a foamed aluminum plate, and rough surfaces for increasing the composite area are arranged on the inner wall of the second plate body and the inner wall of the first plate body. The foamed aluminum explosion-proof door has the beneficialeffects of being light in structure, recyclable, environmentally friendly, high in supporting strength and good in explosion-proof function, and does not emit toxic gas.

The invention provides a foamed aluminum building non-dismantling formwork. The formwork comprises a building formwork body, wherein the building formwork body is of a plate-shaped structure or a columnar structure, the columnar structure is internally provided with a hollow cavity capable of allowing reinforced concrete to be poured, and a main body of the building formwork body is made of foamedaluminum. The inner side, making contact with concrete, of the building formwork body is a formwork composite face, the outer side, not making contact with the concrete, of the building formwork bodyis a formwork decorative face, and the formwork composite face is provided with a rough surface for increasing the binding force with the concrete. The foamed aluminum building non-dismantling formwork has the characteristics that foamed aluminum is ingeniously applied to a building front-end process in advance, the advantages are made best use of and the disadvantages are bypassed, the foamed aluminum building non-dismantling formwork is directly compounded on the surface of a building and integrally compounded with reinforced concrete of columns, beams and walls, the foamed aluminum building non-dismantling formwork has the characteristics of being small in density, high in impact absorption capacity, resistant to high temperature, good in heat preservation performance and the like, onone hand, the performance of the columns, beams and walls of the building is improved, and on the other hand, building processes are reduced.

The invention relates to a preparation method of moistureproof and mothproof calligraphy and painting mounting paste and belongs to the technical field of preparation of paste. The preparation method comprises the following steps: firstly, carrying out freezing, unfreezing and alkali soaking treatments on pigskin, then degreasing the pigskin with absolute ether and n-butanol respectively, carrying out acid soaking dissolution after degreasing, filtering to obtain viscous liquid, then mixing substances including corn starch and pyroligneous, heating a mixture to obtain a paste substance, mixing the paste substance and the viscous liquid, carrying out ultrasonic treatment on a mixture to obtain an improved paste substance, and finally carrying out reaction on the improved paste substance and substances including vinyl acetate to obtain the moistureproof and mothproof calligraphy and painting mounting paste. The prepared moistureproof and mothproof calligraphy and painting mounting paste is excellent in moisture resistance and moth resistance without rotten due to insect bites within 2-3 years and mildews within 7-10 months, and the retention time is prolonged.

The invention provides a mat rush summer sleeping mat weaving method and relates to the technical field of textile processing. The mat rush summer sleeping mat weaving method comprises the steps thatmat rush is treated; the mat rush is soaked in Chinese medicine liquid; the mat rush is subjected to pulping and yarn-drawing and is woven into a mat rush summer sleeping mat; and the mat rush summersleeping mat is treated. The mat rush summer sleeping mat obtained through the mat rush summer sleeping mat weaving method is easy to fold, phozy, resistant to static electricity, cool, refreshing, smooth, comfortable, good in gas permeability, capable of absorbing sweaty moisture emitted by the human body, not prone to sticking the skin, purely natural and environmentally friendly, health care and practicability are integrated, traditional Chinese medicinal materials including folium artemisiae argyi, clove, radix glycyrrhizae, radix stemonae, atractylodes radix, agastache rugosus, flos magnoliae, crysanthemum cinerariioflium trev and the like can have a good insect prevention effect and a good acarid prevention effect, and tea leaves can remove foreign flavors.

The invention provides a foamed aluminum metal composite decorative plate, and relates to the technical field of decorative plates. The foamed aluminum metal composite decorative plate comprises a decorative plate body, wherein the decorative plate body comprises a first plate body and a second plate body which are made of metal materials, the thickness of the first plate body and the thickness ofthe second plate body is 5 mm to10 mm, a foamed aluminum block is arranged between the first plate body and the second plate body, the foamed aluminum block is compounded with the first plate body and the second plate body into a whole, an uneven surface is formed on the outer surface of the foamed aluminum block, bonding layers are respectively arranged on the upper and lower surfaces of the foamed aluminum plate, and rough surfaces for increasing the compounded area are respectively arranged on the inner wall of the second plate body and the inner wall of the first plate body. The foamed aluminum metal composite decorative plate has the beneficial effects of the light structure, recyclability, greenness, environmental friendliness, high support strength, safety and reliability.

The invention provides a fine denier polyamide yarn, cotton fiber and milk protein fiber blended yarn. The blended yarn is composed of, by weight, 40-50 parts of fine denier polyamide yarns, 40-50 parts of cotton fibers and 15-25 parts of milk protein fibers. The blended yarn has the advantage that characteristics of the fine denier polyamide yarns, the cotton fibers and the milk protein fibers can be complemented to exploit the advantages to the full.

The invention provides a foamed aluminum sound absorber, and relates to the technical field of sound absorbing materials. The foamed aluminum sound absorber comprises a sound absorber body, the soundabsorber body comprises a foamed aluminum block, a punched metal plate wraps the foamed aluminum block, the thickness of the punched metal plate is 5 mm to 10 mm, a sound absorbing non-woven fabric isarranged on the inner wall of the punched metal plate, the thickness of the sound absorbing non-woven fabric is 0.06 mm to 0.08 mm, a cavity is formed between the foamed aluminum block and the punched metal plate, and the width of the cavity is 15 mm to 20 mm. The invention has the beneficial effects of being light in structure, capable of being recycled, green and environment protective, high insupporting strength and convenient to assemble and disassemble.

The invention belongs to the technical field of insect specimen preservation, and in particular relates to a mothproof agent for insect specimens and a preparation method thereof. The anti-moth agent includes the following raw materials in parts by weight: 10-40 parts by weight of shell powder with a particle size of 500-2000 μm, 10-20 parts by weight of Polygonum micropowder with a particle size of 50-1000 nm, and a particle size of 50 10-20 parts by weight of wormwood fine powder of 1000nm. The invention uses the above three raw materials to compound to obtain the anti-moth agent, and each raw material synergizes and benefits each other, and has good anti-moth performance and long service life.