WO2018033042A1 - Panneau composite en mousse de polyuréthane rigide renforcé par des fibres à haute teneur en fibres et son procédé de fabrication - Google Patents

Panneau composite en mousse de polyuréthane rigide renforcé par des fibres à haute teneur en fibres et son procédé de fabrication Download PDF

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WO2018033042A1
WO2018033042A1 PCT/CN2017/097347 CN2017097347W WO2018033042A1 WO 2018033042 A1 WO2018033042 A1 WO 2018033042A1 CN 2017097347 W CN2017097347 W CN 2017097347W WO 2018033042 A1 WO2018033042 A1 WO 2018033042A1
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fiber
foam composite
rigid foam
composite sheet
content
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PCT/CN2017/097347
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English (en)
Chinese (zh)
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牛斌
曾志斌
苏永华
赵体波
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中国铁道科学研究院铁道建筑研究所
中国铁道科学研究院
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Publication of WO2018033042A1 publication Critical patent/WO2018033042A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4808—Mixtures of two or more polyetherdiols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/041—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with metal fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0025—Foam properties rigid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0066—≥ 150kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C08J2375/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids

Definitions

  • the invention belongs to the technical field of polymer composite materials, and relates to a high fiber content fiber reinforced polyurethane rigid foam composite board, in particular to a high fiber content fiber reinforced polyurethane rigid foam composite applied in the fields of railway, light rail and subway.
  • the sheet and its manufacturing method are made into composite sleepers, which can be extended to bridges, municipal, chemical, marine, armored vehicles, trucks, offshore drilling platforms and other fields as a walkway board, and can also be used as a template for concrete pouring construction.
  • the plates used in railways, light rails and subways, such as pedestrian walkway boards, cable trough covers, sleepers, etc. are mostly made of reinforced concrete or reactive powder concrete.
  • the quality is large, the construction quality is difficult to guarantee, and the durability is not good. Deterioration requires regular inspection and maintenance.
  • some wood materials are used instead of not only consuming a large amount of high-quality wood, but also exposed to harsh natural environment for a long time. The deterioration is serious, and cracks, defects and insect holes are prone to occur. About 5 to 10 are used. It must be replaced in the year, which greatly increases the maintenance and replacement costs of the product.
  • Some are replaced by FRP materials, but FRP materials are added in the production, a large amount of powder is added.
  • the quality of the products is also large; if the glass fiber reinforced plastic material is made into a hollow structure, its mechanical properties are greatly reduced, especially the bolt pull-out strength is too low, and there is a safety hazard, which usually has to be replaced in 5 to 10 years.
  • the fiber-reinforced polyurethane foam materials studied at home and abroad are made of polyether polyol and isocyanate.
  • the polyether polyol has high functionality and the polyurethane reaction and curing rate is fast, basically 3 minutes. It can be cured in the right and left time, and the selected polyether polyol has high viscosity and poor fluidity. It is difficult to solve the problem of uniform polyurethane and fiber impregnation before the polyurethane is cured. Therefore, the fiber content of the fiber-reinforced polyurethane foam products currently produced at home and abroad Low, polyurethane and fiber impregnation uneven, local polyurethane content, foam, local fiber content, dry yarn phenomenon, resulting in low strength, uneven strength, unstable quality.
  • the object of the present invention is to provide a high fiber content fiber reinforced polyurethane rigid foam composite sheet and a preparation method thereof, and the comprehensive performance thereof. It is better than the above materials and can be effectively replaced.
  • a high fiber content fiber reinforced polyurethane rigid foam composite board which is made of a polyurethane resin as a matrix material and a fiber as a reinforcing material.
  • the mass ratio of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows:
  • the present invention can also be improved as follows.
  • the reinforcing fiber is a mixture of any one or more of glass fiber, basalt fiber, carbon fiber, aramid fiber, and steel fiber.
  • the reinforcing fibers are mainly composed of long fibers, and further include chopped fibers and fiber mats.
  • the coupling agent is a silane coupling agent.
  • the anti-UV agent is a UV-based anti-UV agent.
  • the activity of the polyurethane resin reaction is lowered, the curing time of the polyurethane resin is prolonged, the immersion time with the reinforcing fiber is increased, and the viscosity of the polyether polyol is employed. It has low fluidity and increases its impregnation ability with reinforcing fibers, making it more uniform with reinforcing fiber impregnation.
  • the coupling agent By increasing the coupling agent, the wettability and dispersibility of the filler in polyurethane resin are greatly improved, and the addition is increased.
  • the impregnation ability and adhesive ability of the polyurethane resin and the reinforcing fiber make the polyurethane resin and the reinforcing fiber impregnate more thoroughly, and improve the penetration speed of the impregnated reinforcing fiber of the polyurethane resin, thereby solving the problem that the reinforcing fiber is excessive and difficult to be impregnated, thereby making the material
  • the strength performance is greatly improved and the strength uniformity is more stable; in addition, by adding a coupling agent, the electrical properties of the material can be greatly improved;
  • the fiber reinforced polyurethane rigid foam material products with a reinforcing fiber content of more than 840 kg/m 3 and a reinforcing fiber content of more than 60% make up the technical blank of the fiber reinforced polyurethane foam composite sheet, and diversify its product specifications and performances to meet different technical specifications.
  • the mass ratio of the reinforcing fibers is more than 60%, which not only reduces the manufacturing cost, but also greatly improves the strength of the fiber-reinforced polyurethane rigid foam composite sheet at the same density, and at the same time, the product is denser, the water absorption amount, and the like. Significantly lower indicators, etc., improve the water resistance of the product;
  • the anti-ultraviolet aging performance of the material is further enhanced by the addition of an anti-UV agent;
  • the invention provides a high fiber content fiber reinforced polyurethane rigid foam composite sheet, which can effectively replace the current high quality concrete, wood, glass fiber reinforced plastic sheet and the low fiber content fiber reinforced polyurethane foam composite sheet studied at home and abroad, and can be widely applied to railways, In the fields of light rail and subway, it is used to make composite sleepers and can be applied to various walkway step boards and concrete construction templates.
  • the invention also relates to a method for manufacturing a high fiber content fiber reinforced polyurethane rigid foam composite board It is made by continuous molding process.
  • the continuous molding process includes seven processes of unwinding long fibers and fiber mats, injecting polyurethane resin, adding chopped fibers, uniformly impregnating, crawling laminating, curing, and fixed length cutting.
  • the uniform impregnation is specifically: uniformly impregnating the polyurethane resin on the surface and inside of the reinforcing fiber through a high-pressure foaming device, a moving casting device, and a corresponding tooling.
  • the crawler laminating machine is composed of a crawler laminating machine and a side stopper, and the side stopper is fixed on the crawler laminator, and the height and the width of the cavity are adjusted according to the size of the stopper. .
  • the fixed length cutting is performed by a cutting machine, and the cut high fiber content fiber reinforced polyurethane rigid foam composite sheet has a thickness of 10 mm to 120 mm, a width of 100 mm to 600 mm, and a density of 200 kg/m 3 to 2000 kg/m 3 . .
  • FIG. 1 is a schematic view showing a production process of a high fiber content fiber reinforced polyurethane rigid foam composite sheet according to the present invention
  • FIG. 2 is a schematic view showing the structure of a high fiber content fiber reinforced polyurethane rigid foam composite sheet according to the present invention.
  • the invention relates to a high fiber content fiber reinforced polyurethane rigid foam composite sheet 9 which is made of a polyurethane resin 8 as a matrix material and a fiber as a reinforcing material.
  • the mass ratio of the polyurethane resin 8 and the mass ratio of the urethane resin 8 to the reinforcing fibers are as follows:
  • the reinforcing fiber is a mixture of any one or more of glass fiber, basalt fiber, carbon fiber, aramid fiber, and steel fiber.
  • the reinforcing fibers are mainly composed of long fibers 6, and further include chopped fibers 7 and fiber mats.
  • the coupling agent is a silane coupling agent.
  • the anti-UV agent is a UV-based anti-UV agent.
  • the invention also relates to a method for manufacturing a high fiber content fiber reinforced polyurethane rigid foam composite sheet 9, which is produced by a continuous molding process, and the continuous molding process comprises unwinding long fibers 6 and fiber mats, injection polyurethane resin 8, and adding short Cut fiber 7, uniform impregnation, crawler lamination mainframe 4 solidification, cooling, fixed length cutting seven processes.
  • the uniform impregnation is specifically to uniformly impregnate the urethane resin 8 on the surface and inside of the reinforcing fiber through the high pressure foaming device 2, the mobile casting device 3, and the corresponding tooling.
  • the crawler laminating machine 4 is composed of a crawler laminating machine and a side stopper, and the side stopper is fixed on the crawler laminating machine, and the height and width of the cavity are adjusted according to the size of the stopper.
  • the fixed length cutting is performed by the cutting machine 5, and the cut high fiber content fiber reinforced polyurethane rigid foam composite sheet has a thickness of 10 mm to 120 mm, a width of 100 mm to 600 mm, and a density of 200 kg/m 3 to 2000 kg/m 3 .
  • the continuous molding process of the high fiber content fiber reinforced polyurethane rigid foam composite sheet of the present invention is carried out by the apparatus shown in the drawing, firstly unwinding the long fiber and the fiber mat in the creel 1, injecting the polyurethane resin, and adding short.
  • the fiber is cut, and then uniformly impregnated by the high pressure foaming device 2, the mobile casting device 3 and the corresponding tooling, and then solidified in the crawler laminating machine 4, and after cooling, the cured plate is cut by the cutter 5.
  • the high fiber content fiber reinforced polyurethane rigid foam composite sheet 9 obtained after cutting a long fiber 6 and a chopped fiber 7 extending in the longitudinal direction are provided inside, and the outer portion is wrapped with a polyurethane resin 8, and the curing is performed.
  • the high fiber content fiber reinforced polyurethane rigid foam composite sheet 9 is obtained.
  • the fiber mat may be disposed on the outer side surface of the urethane resin 8 enclosing the long fibers 6 and the short fibers 7.
  • the long fibers 6 and the short fibers 7 may be arranged in a plurality of rows and alternately arranged to form a matrix array structure, and the polyurethane resin 8 is wrapped around the long fibers 6 and the short fibers 7 to form a rectangular parallelepiped plate having a thickness. It is 10 mm to 120 mm, the width is 100 mm to 600 mm, and the density is 200 kg/m 3 to 2000 kg/m 3 . Preferably, the apparent total density is 800 kg/m 3 to 1800 kg/m 3 .
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: the polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, 90 parts, a hydroxyl value of 60 to 160, and a functionality of 1 to 2 10 parts of polyether polyol B, 10 parts of flame retardant, 5 parts of hard foam stabilizer, 15 parts of coupling agent, 0.3 parts of catalyst, 0.1 part of foaming agent, 0.3 part of antioxidant, 0.3 part of anti-UV agent, 120 parts of isocyanate; long fiber: 430 parts, chopped fiber 10 parts, fiber mat 5 parts.
  • the reinforcing fiber content is 64%
  • the production density is 1400 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 260mm ⁇ 50mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.4m/min, temperature: 90°C/60°C.
  • Table 1 The properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 1.
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: the polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, 95 parts, a hydroxyl value of 60 to 160, and a functionality of 1 to 2 5 parts of polyether polyol B, 10 parts of flame retardant, 3 parts of hard foam stabilizer, 5 parts of coupling agent, 0.3 parts of catalyst, 0.1 part of foaming agent, 0.3 part of antioxidant, 0.3 part of anti-UV agent, 110 parts of isocyanate; long fiber: 410 parts, chopped fiber 10 parts, fiber mat 0 parts.
  • the reinforcing fiber content is 65%, the production density is 1200 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 240mm ⁇ 50mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.6m/min, temperature: 90°C/60°C.
  • Table 2 The properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 2.
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: the polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, 90 parts, a hydroxyl value of 60 to 160, and a functionality of 1 to 2 5 parts of polyether polyol B, 15 parts of flame retardant, 5 parts of hard foam stabilizer, 10 parts of coupling agent, 0.2 parts of catalyst, 0.3 part of foaming agent, 0.5 part of antioxidant, 0.5 part of anti-UV agent, 115 parts of isocyanate; long fiber: 520 parts, chopped fiber 5 parts, 1 part of fiber mat.
  • the reinforcing fiber content is 68.5%
  • the production density is 1000 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 500mm ⁇ 30mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.5m/min, temperature: 90°C/70°C.
  • the properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 3.
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: the polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, 95 parts, a hydroxyl value of 60 to 160, and a functionality of 1 to 2 10 parts of polyether polyol B, 5 parts of flame retardant, 5 parts of hard foam stabilizer, 10 parts of coupling agent, 0.1 part of catalyst, 0.1 part of foaming agent, 0.25 part of antioxidant, 0.25 part of anti-UV agent, 125 parts of isocyanate; long fiber: 460 parts, chopped fiber 10 parts, fiber mat 0.
  • the reinforcing fiber content is 65%, the production density is 800 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 200mm ⁇ 60mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.4m/min, temperature: 80°C/70°C.
  • Table 4 The properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 4.
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: the polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, 92 parts, a hydroxyl value of 60 to 160, and a functionality of 1 to 2 8 parts of polyether polyol B, 10 parts of flame retardant, 2.5 parts of hard foam stabilizer, 15 parts of coupling agent, 1 part of catalyst, 1 part of foaming agent, 1 part of antioxidant, 1 part of anti-UV agent, 100 parts of isocyanate; long fiber: 1330 parts, 30 pieces of chopped fibers, 10 parts of fiber mat.
  • the reinforcing fiber content is 85%, the production density is 1500 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 600mm ⁇ 10mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.4m/min, temperature: 90°C/60°C.
  • the properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 5.
  • the proportion of the polyurethane resin and the ratio of the polyurethane resin to the reinforcing fiber are as follows: a polyether polyol A having a hydroxyl value of 400 to 480 and a functionality of 1 to 3, a hydroxyl value of 60 to 160, and a functionality of 1 to 2. 7 parts of polyether polyol B, 10 parts of flame retardant, 2.5 parts of hard foam stabilizer, 15 parts of coupling agent, 0.8 parts of catalyst, 0.6 part of foaming agent, 0.7 part of antioxidant, 0.5 part of anti-UV agent, 135 parts of isocyanate; long fiber: 1940 parts, 40 pieces of chopped fibers, 20 parts of fiber mat.
  • the reinforcing fiber content is 88%, the production density is 1800 ⁇ 50kg/m 3 fiber reinforced polyurethane rigid foam composite sheet specification: 100mm ⁇ 100mm ⁇ 3000mm.
  • Track type laminating host parameter setting running speed: 0.4m/min, temperature: 90°C/60°C.
  • the properties of the composite sheet produced according to the formulation and operating conditions of this example are shown in Table 6.
  • the invention discloses a high fiber content fiber reinforced polyurethane rigid foam composite board, which solves the problem of insufficient polyurethane and fiber impregnation by adopting various technical means such as low hydroxyl value low functionality mixed polyether polyol and coupling agent. , thereby increasing the fiber content, capable of producing a fiber reinforced polyurethane rigid foam material having a density higher than 840 kg/m 3 and a fiber content of more than 60%, and making up for the technical blank of the high fiber content fiber reinforced polyurethane foam composite sheet, and making the product Diversified specifications and performance to meet different technical requirements.
  • the high fiber content fiber reinforced polyurethane rigid foam composite sheet has a fiber content of more than 60%, and the mechanical properties, ultraviolet aging resistance, electrical properties and water resistance of the produced material are obtained under the condition that the density is almost the same. And many other indicators are far superior to the products of well-known manufacturers at home and abroad.

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
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  • Inorganic Chemistry (AREA)
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  • Polyurethanes Or Polyureas (AREA)

Abstract

L'invention concerne un panneau composite en mousse de polyuréthane rigide renforcé par des fibres à haute teneur en fibres et son procédé de fabrication; une résine de polyuréthane étant utilisée en tant que matériau de matrice; et comprenant un polyol de polyéther hybride, un agent ignifuge, un agent de stabilisation de mousse dure, un agent de couplage, un catalyseur, un agent d'expansion, un antioxydant, un agent anti-UV et un isocyanate; les fibres étant utilisées en tant que matériau de renforcement et leur teneur étant supérieure à 60 %. L'utilisation de moyens techniques tels qu'un polyol de polyéther hybride à faible teneur en hydroxyle et à faible fonctionnalité et un agent de couplage résout le problème de l'imprégnation insuffisante de fibres de renforcement par une résine de polyuréthane, ce qui permet d'augmenter la teneur en fibres de renforcement. L'invention permet ainsi de fabriquer un produit de mousse de polyuréthane rigide renforcé par des fibres ayant une densité supérieure à 840 kg/m3 et une teneur en fibres de renforcement supérieure à 60 %, de compenser la déficience technique de panneaux composites en mousse dure de polyuréthane renforcés par des fibres, de rendre les spécifications du produit et ses performances plus diverses, et de satisfaire différentes exigences techniques.
PCT/CN2017/097347 2016-08-17 2017-08-14 Panneau composite en mousse de polyuréthane rigide renforcé par des fibres à haute teneur en fibres et son procédé de fabrication WO2018033042A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610681252.4 2016-08-17
CN201610681252.4A CN106349446B (zh) 2016-08-17 2016-08-17 一种高纤维含量纤维增强聚氨酯硬泡合成板材及其制作方法

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WO2018033042A1 true WO2018033042A1 (fr) 2018-02-22

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