KR850003516A - Flame retardant extruded product and its manufacturing method - Google Patents

Abstract

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Description

Flame retardant extruded product and its manufacturing method

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Claims (31)

Flame retardant produced by extruding wood chips and / or wood fiber materials, ⓐ 50 to 99.5% by weight of physically-chemically stable flame retardant under extrusion conditions and ⓑ flame retardant about 0.5 to 50% by weight of cured water-insoluble synthetic resin Flame retardant wood products, in particular solid and pipe boards, containing the product of the vinegar at a concentration of about 5 to 50% by weight based on dry wood needles and / or wood fiber A flame retardant according to claim 1, wherein, as the flame retardant, ⓐ general formula H ( _n − _m ) _{+ 2} (NH ₄ ) _m P _n O 3 _{n + 1} (where n represents an integer of about 20 to 800 on average and a ratio of m / n Is from about 75 to 99.5% by weight of the powdery free-flowing ammonium polyphosphate and about 0.5 to 25% by weight of the cured water-insoluble synthetic resin encapsulating individual polyammonium particles, dried wood chips and / Or flame retardant wood products containing at a concentration of about 5 to 50% by weight based on the fiber material. The fire retardant wood product according to claim 1, wherein the flame retardant consists of particles having an average size of about 0.03 to 0.08 mm. The fire retardant wood product according to claim 2, wherein the index n represents an integer of 450 to 800 on average. The fire retardant wood product according to claim 1, wherein the cured water-insoluble synthetic resin is a polycondensation product of melamine and formaldehyde. 6. The uncured multicondensation product of claim 5, wherein the 50% aqueous solution has a kinematic viscosity of 20 to 50 mpa · s (at 20 ° C.), a pH-value of 8.8 to 9.8 (at 20 ° C.) and a density of 1.21 to 1.225 g / ml A flame retardant wood product which is a powder with (at 20 ° C.). The fire retardant wood article of claim 1, wherein the water-insoluble curable resin is a polycondensation product of a material selected from polyols, isocyanates and polyisocyanates. The flame retardant wood article of claim 1, wherein the water-insoluble curable resin is a multicondensation product of a material selected from isocyanates and polyisoisates. The flame retardant wood product according to claim 1, wherein the water-insoluble curable synthetic resin is an epoxide resin. The fire retardant wood product according to claim 1, wherein the water-insoluble curable resin is a polycondensation product of an aromatic hydroxy compound and formaldehyde. The fire retardant wood product according to claim 10, wherein the aromatic hydroxy compound is phenol or resorcinol. A material selected from a mixture of wood chips, wood fiber materials and ids, ⓐ between 50 and 99.5 weight percent of a physically and chemically stable flame retardant under extrusion conditions, and at least a partially cured water-insoluble synthetic resin encapsulating individual particles of the flame retardant. From about 5 to 50% by weight of flame retardant, based on wood chips and / or wood fiber materials, and at least one material selected from binders, hardeners and conventional additives; Slowly introducing the entire mixture into a screw extruder and extruding it into extruded wood products under the aid of a press moving up and down between the heatable plates, as flame retardant, physicochemically stable flame retardant 50 to 99.5% by weight under extrusion conditions. And ⓑ flame retardant wood products containing from about 0.5 to 50% by weight of cured water-insoluble synthetic resin encapsulating individual particles of flame retardant at a concentration of about 5 to 50% by weight based on dry wood chips and / or wood fiber materials. How to manufacture. 13. The method of claim 12, wherein the material selected from wood chips, wood fiber materials and mixtures thereof is selected from the following formulas: ⓐ general formula H _{(nm) + 2} (NH ₄ ) _m P _n O 3 _{n + 1} , where n is on average about 20 to 75 to 99.5% by weight of a powdered free-flowing ammonium phosphate powder having an integer of 800 and a ratio of m / n of about 1), and at least partially cured water-insoluble synthetic resin encapsulating individual particles of 25% by weight of about 5 to 50% by weight of flame retardant based on dry wood chips and / or wood fiber materials, and one or more materials selected from binders, curing agents and conventional additives; Gradually introducing the entire mixture into a screw extruder and extruding the extruded wood with the aid of a press moving up and down between the heatable plates. The method of claim 12 wherein the press is operated under an average forming pressure of 0.5 to 2.0 N / mm 2. The method of claim 12, wherein the hot plate is maintained at a temperature of 100 to 250 ° C. 13. The method of claim 12, wherein a urea / formaldehyde adhesive is used as a binder and a modified ammonium chloride solution and / or special curing agent is used as curing agent. 13. The process of claim 12 wherein isocyanate is used as the binder. 18. The process of claim 17 wherein isocyanate based on diphenylmethane-diisocyanate (MDI) is used as the binder. The chip board according to claim 1, made according to claim 12 used to produce a flame retardant board veneered from wood or laminate. Manufactured by extruding wood chips and / or wood fiber materials, ① physicochemically stable flame retardants 50) to 99.5 wt% under extrusion conditions, and ② about 0.5 to 50 wt% cured water-insoluble synthetic resin encapsulating individual particles of flame retardant. A chip board comprising about 5 to 50% by weight of a flame retardant, each based on a wood chip and / or wood fiber material, and at least one material selected from among curing agents and conventional additives, A flame retardant coated chip board comprising a surface veneer of wood or laminated sheet material and optionally a surface layer of a flame retardant varnish or lacquer, in particular a board veneered with wood or laminate. The method according to claim 20 _{, which} comprises: ( ₁ ) general formula H _(nm, ) ₊₂ (NH ₄ ) _m P _n O _3n-1 , wherein extruded from wood chips and / or wood fiber materials, where n is on average from about 20 to 75 to 99.5% by weight of a powdery free-flowing ammonium phosphate powder having an integer of 800 and a ratio of m / n of about 1), and (2) about 0.5 to 25 curable water-insoluble synthetic resins encapsulating individual particles. By using a chip board, ⓑ special binders, comprising from about 5 to 50% by weight of flame retardant, respectively, based on weight percent of wood chips and / or wood fiber materials, and at least one material selected from binders, curing agents and conventional additives. A flame retardant coated chip board comprising a veneer for covering or sealing a wood or laminated sheet material, and optionally a surface layer of a flame retardant varnish or lacquer, adhered to the chip board. The flame retardant coated chipboard of claim 20, wherein the flame retardant consists of particles having an average particle size of about 0.03 to 0.08 mm. The flame-retardant clad chip board of Claim 21 whose index n is an integer of an average of 450-800. The flame retardant coated chipboard of claim 20, wherein the water-insoluble cured synthetic resin is a multicondensation product of melamine and formaldehyde. 21. The coated chip board of claim 20, wherein the water-insoluble cured synthetic resin is a polycondensation product of a polyol with a material selected from isocyanates and polyisocyanates. The flame retardant coated chip board of claim 20, wherein the water-insoluble cured synthetic resin is a polycondensation product of a material selected from isocyanates and polyisocyanates. The flame-retardant coated chip board of claim 20, wherein the water-insoluble cured synthetic resin is an epoxide resin. The flame retardant coated chip board of claim 20, wherein the water-insoluble cured synthetic resin is a polycondensation product of an aromatic hydroxy compound and formaldehyde. The flame retardant coated chip board of claim 28, wherein the aromatic hydroxy compound is selected from phenol and resorcinol. 21. The flame retardant coated chipboard of Claim 20, wherein the special binder used for veneering wood or laminated sheet material is a condensation product based on phenol / melamine / urea-formaldehyde or isocyanate. 21. The flame retardant coated chipboard of claim 20, wherein the flame retardant monocomponent lacquer or varnish is applied to a wood-veneered board surface. ※ Note: The disclosure is based on the initial application.