38results about How to "Meet water resistance requirements" patented technology

The invention provides an adhesive for a plywood, prepared from the following raw materials according to parts by weight: 70-80 parts of dispersion medium, 20-35 parts of degreased soyabean protein powder, 0.5-3 parts of sodium carbonate, 2-6 parts of urea, 1-2 parts of complexing agent and 1-5 parts of enhancer. The adhesive provided by the invention has the characteristics that all the components have excellent mutual synergistic effect, a materials such as a metal salt is compounded with the soybean protein, and simultaneously, glutaraldehyde is taken as the enhancer so that the problem of poor water resistence of the common soybean protein adhesive is solved; therefore, the adhesive is capable of meeting the waterproof requirement of the adhesive for the plywood and guaranteeing the practical performance of the soybean protein adhesive; and the plywood prepared by using the adhesive provided by the invention is capable of meeting the international requirements of the class II plywood. Besides, the invention also provides a method for preparing the adhesive for the plywood; and the method is simple in process, convenient for operation and suitable for popularization and application.

The invention provides a waterproof soybean meal adhesive, consisting of the following components in parts by weight: 70-80 parts of water, 0.2-1.0 part of modified nano cellulose, 20-35 parts of degreased soybean meal, and 1-10 parts of a reinforcer. The modified soybean protein adhesive for a veneer board, provided by the invention, has the main component of soybean meal, and has the advantages of being low in price, easy to treat and regenerate, and an adhered veneer board does not have a problem of formaldehyde emission, so that the problem of formaldehyde pollution in indoor air caused by artificial boards is thoroughly solved. The soybean protein adhesive provided by the invention is prepared by processing degreased soybean meal, so that soybean processing remainders are effectively utilized, resources are comprehensively utilized, the production cost is saved, and the added value of a product is improved.

The invention discloses a non-formaldehyde albumin adhesive and a preparation method thereof, and relates to the technical field of artificial board adhesives. The non-formaldehyde albumin adhesive isprepared from the following raw materials: feather meal, bromelain, dispersion medium water, an activating agent, ethylene glycol diglycidyl ether and a curing agent. The non-formaldehyde albumin adhesive prepared from the raw materials is small in molecular weight, high in activity, good in solubility, capable of being self-enhanced, high in waterproof adhesion performance and high in stability;a prepared board can meet the requirement on water resistance of the artificial board adhesive; the preparation method is low in cost and easy to implement.

The invention discloses a formaldehyde-free soybean protein based adhesive and a preparation method thereof. The adhesive is prepared from soybean meal, bromelain, bean chitinase, dispersion medium water, sodium periodate, diethylenetriamine, glutaraldehyde diglycidyl ether and a curing agent. According to the formaldehyde-free soybean protein based adhesive obtained with the preparation method, soybean meal molecules are degraded, modified and recombined to form a prepolymer, proteins stretch sufficiently, molecular active groups are increased obviously, reactivity, solubility, water-retention and toughness are improved, and after addition of an elastomer-based curing agent, the prepared adhesive has high flexibility, water-resistant adhesion and stability; the requirement of an artificial board adhesive for water resistance can be met, cost of the adhesive is reduced due to reduction of use quantity of a crosslinking agent, and practicability of the protein based adhesive is guaranteed.

The invention discloses a soybean meal lignin-based adhesive and a preparation method thereof. The soybean meal lignin-based adhesive is prepared from 20-50 parts of defatted protein powder, 1-5 parts of a denaturant, 1-30 parts of a reinforcing agent and 60-80 parts of a dispersion medium. The preparation method comprises the steps of dispersing, mixing, stirring and the like. The soybean meal lignin-based adhesive and the preparation method thereof have the following advantages: the problems of poor water resistance, low dry cementation strength and poor boiling resistance of a common protein adhesive are solved, the water-proof requirement of an adhesive for artificial boards can be satisfied, and the practicability of the protein adhesive is guaranteed; the problem of exhaustion of synthetic fossil raw materials used in conventional artificial board adhesives can be favorably solved, and the environmental protection and sustainable development principles can be conformed; resources are comprehensively utilized, the production cost is lowered and the product added value is improved.

The invention provides a soybean protein adhesive for plywood. The soybean protein adhesive is prepared from the following components in parts by weight: 70-80 parts of a dispersing medium, 20-35 parts of defatted soybean protein powder, 0.5-2 parts of a denaturant, 1-2 parts of an emulsifier, 1-5 parts of an enhancer and 0.02-0.1 part of an initiator. According to the invention, all the components of the adhesive have a good synergistic effect. The defatted soybean protein powder is subjected to denaturation treatment by adopting sodium carbonate or sodium hydroxide, and glycidyl methacrylateis used as a reinforcing agent, so that the problem that a common soybean protein adhesive is poor in water resistance and complex in process is solved, the water-resistant use requirements of an adhesive for plywood can be met, and practical performance of the soybean protein adhesive is guaranteed. In addition, plywood prepared by the adhesive provided by the invention meets the requirement oftype-II plywood in the national standard. Moreover, the invention also provides a preparation method of the adhesive for soybean protein plywood. The method is simple in process, is convenient to operate and is suitable for popularization and application.

The invention discloses soybean-meal-based wood adhesive and a preparing method thereof. The soybean-meal-based wood adhesive is prepared from 27-33 parts of degreased protein powder, 0.001-0.003 part of viscosity reducer, 0.5-2.0 part of emulgator, 1-2 parts of denaturant, 7-20 parts of enhancer and 65-73 parts of a dispersion medium. The preparing method includes the steps of dispersing, mixing, temperature rising, stirring and the like. The soybean-meal-based wood adhesive has the advantages that the waterproof requirement of the artificial board adhesive can be met, and practicability of the protein adhesive is ensured; the problem of formaldehyde pollution in indoor air due to artificial boards is solved thoroughly, the main raw materials are renewable resources, and therefore the soybean-meal-based wood adhesive meets the environmental protection and sustainable development rule.

The invention discloses a soybean formaldehyde-free adhesive and a preparation method thereof. The adhesive is prepared from 27-33 parts of degreased protein powder, 1-2 parts of denaturant, 0.5-2.0 parts of emulsifier, 5-15 parts of reinforcing agent and 65-73 parts of dispersing medium. The preparation method comprises the steps of carrying out dispersion, carrying out ultrasonic treatment, carrying out heating, carrying out stirring, and the like. The formaldehyde-free adhesive and the preparation method thereof have the advantages that the requirements of adhesives for artificial boards on water resistance can be met, and the practicability of protein adhesives is guaranteed; the problem of formaldehyde pollution to indoor air caused by the artificial boards is thoroughly solved; main raw materials are renewable resources, so that the formaldehyde-free adhesive and the preparation method thereof are in line with environmental protection and sustainable development principles.

The invention provides a high-performance connecting structure of a deformation joint of a stone curtain wall. The high-performance connecting structure comprises a stone face plate and a stone back plate, the stone back plate can be connected with curtain wall keels through connecting pieces, and the connecting pieces comprise seismic components, two adaptors and two L-shaped corner codes; the seismic components comprise connecting plates, the middles of the connecting plates are connected with the stone back plate through shaping bolts, springs are formed between the upper ends of the shaping bolts and the connecting plates, the left and right ends of the connecting plates are connected with rotating rods through bearings, and the lower ends of the rotating rods are fixedly connected with circular sliding blocks; the two adaptors correspondingly comprise two adapting frameworks, the opposite ends of the two adapting frameworks are fixedly connected with wing flange plates I correspondingly, the back ends of the two adapting frameworks are fixedly connected with wing flange plates II correspondingly, the lower ends of the two wing flange plates I are correspondingly overlapped with the left and right upper end surfaces of the stone back plate, and the upper ends of the two wing flange plates I are provided with horizontal chutes correspondingly; and one ends of the two L-shaped corner codes are fixedly connected with the wing flange plates II, and the other ends of the two L-shaped corner codes are fixedly connected with the curtain wall keels. The high-performance connecting structure integrates the functions of expansion joints, settlement joints and shockproof joints, and has high practicability.

The invention relates to section paper angle protector, paper pad and relative producing method, which provides a packing material used to pack section materials. Wherein, the paper angle protector and the paper pad are made from recycled paper (vellum or newspaper or/and yellow plate), wooden slurry plate, waterproof agent, and oil-proof agent. Said producing method comprises: processing the recycled paper and wooden slurry plate, with dipping, breaking, and adding waterproof agent and oil-proof agent to prepare slurry, and via molding and vacuum slurry adsorption, to shape; molding it with molding module in high temperature and high pressure; cutting edge to attain final product. The invention uses pulp as raw material, with lower cost. And it adds waterproof agent and oil-proof agent to attain waterproof property, flexibility and better anti-drawing property. The invention can be decomposed and nontoxic. It has lower producing cost and high efficiency, while the product can be used to pack steel, wood, stone and ceramic.