35results about How to "Add flame retardant function" patented technology

The invention relates to a furniture plate and in particular to a preparation method of a functional type engineered wood. The preparation method comprises the following steps: rotary cutting or slicing to prepare a blank veneer, and shearing the blank veneer into a needed size to obtain an A veneer; soaking the A veneer in a ternary compound solution prepared from a biomass nano cellulose solubilizer, a flame retardant and acid dyes, and carrying out treatments including toughening, flame retarding and dyeing to obtain a B veneer, wherein the ternary compound solution is prepared from the biomass nano cellulose solubilizer, the flame retardant and the acid dyes of a bis-azo compound according to the mass ratio to be 1:(25-40):(100-300) in a compounding manner; and adding a formaldehyde decomposition powder in a modified MUF adhesive, uniformly stirring, and carrying out dispensing, assembling, cold pressing and sawing on the B veneer to obtain a finished product. With the interface controlling design, the biomass nanotechnology and the synergistic compounding technology, the preparation method effectively solves the diversified matching problem of the flame retardant, a staining reagent and the adhesive, and realizes one material with multiple functions of the reconstituted decorative lumber manufacturing technology.

The invention relates to a novel environment-friendly composite reinforced polypropylene building template, belonging to the technical field of building template preparation. By virtue of the interaction between fine powder of waste tires and polypropylene-styrene dibromide graft copolymer and aluminum hydroxide / polypropylene, the bonding force among the components is increased, the reinforced plastic polypropylene building template is subjected to physical blending and chemical modification, so that not only the overall properties of the reinforced plastic polypropylene building template areimproved and the flame retardant function of the reinforced plastic polypropylene building template is enhanced, but also a new field of recycling waste tires is opened. Through the composite reinforced polypropylene building template provided by the invention, the problems that the strength and rigidity of the existing composite plastic building template cannot meet the construction requirements, the thermal expansion and cold contraction coefficient is large and the electric welding dregs are likely to scald a face plate are solved, and a large amount of natural rubber and petroleum resources are saved. The composite reinforced polypropylene building template has the advantages of high strength, good flame retardant effect, easily-accessible raw materials and simplicity in production, and can be widely used as the construction template in construction engineering, hydroelectric structures, irregular design of bridges and tunnels and the like.

The invention provides a preparation method for a chitosan tetramethylene phosphonium sulphate flame retardant. The preparation method comprises the following steps: performing electrostatic adsorption on tetrakis hydroxymethyl phosphonium sulphate and chitosan in water to obtain a tetrakis hydroxymethyl phosphonium sulphate / chitosan compound; performing dehydration covalent graft reaction on thetetrakis hydroxymethyl phosphonium sulphate / chitosan compound to obtain the chitosan tetramethylene phosphonium sulphate flame retardant. The chitosan tetramethylene phosphonium sulphate flame retardant prepared by the method provided by the invention does not contain halogen, has an antibacterial effect, and is non-toxic, degradable, green and environmentally friendly; the flame retardant is highin molecular weight, keeps linearity, does not have volatility, and has water washing resistance, migration resistance, good compatibility, high stability and good flame retarding effect.

The invention belongs to the technical field of wood processing and relates to an E 0 The manufacturing method of density fiberboard for grade electronic circuit backing board adopts the secondary sizing process, including wood peeling-shaving-wood chip screening-washing-precooking-steaming-hot grinding, adding waterproofing agent-adjustment E 0 Grade moisture-proof adhesive, add additives - dry sorting - blending E 0 High-grade high-solid content adhesives-adding flame retardants-pavement molding-pre-pressing-hot pressing-flap cooling-sanding-inspection and grading-packaging and storage. The adhesive of the present invention adopts the method of secondary addition, which reduces the influence of pre-curing, can give full play to the bonding effect of the adhesive and fully wraps it, and at the same time reduces the energy consumption of the heat energy center. produced E 0 High-grade fiberboard for electronic circuit backing boards solves defects such as moisture deformation, aging, and insufficient hardness, prolongs the service life, increases the flame retardant function, and effectively avoids the risk of burning caused by excessive local temperature during use of electronic circuit backing boards, and further expands Fields of application of fiberboard.

The invention relates to a lithium-ion battery diaphragm, comprising a polyolefin microporous membrane and at least one side of a functional coating coated on the polyolefin microporous membrane, the functional coating is composed of aromatic polyamide, gel polymer, metal It is composed of hydroxides, and has the properties of high temperature resistance, combustion resistance, and easy bonding with battery pole pieces; the lithium-ion battery separator has a fusing temperature ≥ 210 ° C, and a limiting oxygen index ≥ 23%. During the battery hot pressing process, Good adhesion to the battery pole piece. The invention not only has a simple preparation method and is easy to operate, but also can remarkably improve the overall use stability of the battery.

The invention discloses a preparation method of a nanometer magnesia coated kaolin composite material. The preparation method comprises the following steps: (1), weighing the kaolin, grinding and screening, to obtain screened powders; (2), putting the powders into distilled water and putting sodium hexametaphosphate into the solution, carrying out ultrasonic dispersing, stirring and adding an MgCl2 solution, to form a uniform suspending solution; (3), heating the suspending solution to be 60-100 DEG C, stirring the suspending solution, and gradually dripping a CO(NH2)2 solution into the suspending solution until dripping off; (4), filtering the solution, washing filter residues by distilled water until no Cl<-> ion is existent in a washing liquid; and (5), drying the washed filter residues in a drying oven to obtain dry powders, and grinding the dry powders, so as to obtain the nanometer magnesia coated kaolin composite material. The composite material prepared by the preparation method has the advantages that the whiteness is as high as 90%, the index of refraction is high, and furthermore, the flame-retardant function of the composite material is enhanced.

The invention relates to a medium-density fiberboard. The medium-density fiberboard is prepared from, by mass, 100 parts of wood fibers, 8-15 parts of magnalium nanometer layered double hydroxide, 0.01-0.02 part of a coupling agent, 12-15 parts of a modified MUF adhesive and 1-2 parts of a waterproof agent. A preparation method comprises the steps that 1, magnalium layered double hydroxide is firstly dried and finely ground to be 20-50 micrometers, then the coupling agent with the mass percent concentration of 20%-30% is subjected to hydrolysis for 25-35 min at the room temperature, and after the coupling agent reacts for 0.5-1.5 h in an aqueous solution of 80-90 DEG C with the finely-ground magnalium layered double hydroxide added, suction filtration, washing, drying and grinding are carried out; and 2, the modified MUF adhesive and modified Mg / Al-LDHs are added to the wood fibers, 5-10 parts of a formaldehyde catching agent and 1-3 parts of a curing agent are added in the use process of the modified MUF adhesive, and the medium-density fiberboard is obtained through laying, pre-pressing forming, hot pressing and cooling. The medium-density fiberboard is environment friendly, non-toxic and free of obvious moisture absorption, and the oxygen index reaches up to 34%.