CN114953644A - Fiber-reinforced thermoplastic insulation board and preparation method thereof - Google Patents

Fiber-reinforced thermoplastic insulation board and preparation method thereof Download PDF

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Publication number
CN114953644A
CN114953644A CN202210466747.0A CN202210466747A CN114953644A CN 114953644 A CN114953644 A CN 114953644A CN 202210466747 A CN202210466747 A CN 202210466747A CN 114953644 A CN114953644 A CN 114953644A
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reinforced thermoplastic
fiber
fiber reinforced
hot melt
melt adhesive
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Chinese (zh)
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张明娜
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City Capital Techno Shandong New Material Technology Co ltd
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City Capital Techno Shandong New Material Technology Co ltd
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Abstract

The invention relates to a fiber reinforced thermoplastic insulation board and a preparation method thereof. The fiber-reinforced thermoplastic insulation board is formed by bonding a fiber-reinforced thermoplastic skin and an insulation board through a hot melt adhesive film under a primary heating and cooling system, and the obtained insulation board integrates the advantages of high impact resistance, low weight, heat insulation and the like of a thermoplastic fiber-reinforced board; in the preparation process, the unreeling system, the paving and conveying system, the primary heating and cooling compound system and the cutting system are formed in one step, full-continuous production can be realized, the cost is greatly reduced, and the production efficiency is improved.

Description

Fiber-reinforced thermoplastic insulation board and preparation method thereof
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a fiber-reinforced thermoplastic insulation board and a preparation method thereof.
Background
The requirements of industries such as cold chain transportation and related buildings on the heat insulation performance and the impact resistance of the heat insulation board are higher and higher, and in view of the fact that a heat insulation board with a fiber skin and foam bonding structure is available in the market, the heat insulation board has the performances of impact resistance, light weight, heat insulation and the like.
In recent years, with the rise of thermoplastic composite material industry, more and more fibers and thermoplastic resin are combined to prepare new products, fiber reinforced thermoplastic products have high impact strength and better mechanical comprehensive performance, and simultaneously have the characteristics of light weight, environmental friendliness and recyclability.
Disclosure of Invention
Aiming at the defects of low production efficiency, high cost of bonding materials, non-environmental protection of partial bonding materials and the like of the existing glue bonding insulation board, the invention provides a fiber reinforced thermoplastic skin insulation board and a preparation method thereof, wherein the fiber reinforced thermoplastic skin insulation board is more environment-friendly, the production efficiency is doubled, and the bonding materials are greatly reduced, and a continuous manufacturing process method thereof.
The invention aims to provide a fiber reinforced thermoplastic insulation board.
The invention also aims to provide a preparation method of the fiber reinforced thermoplastic insulation board.
According to the fiber reinforced thermoplastic insulation board provided by the embodiment of the invention, the fiber reinforced thermoplastic insulation board comprises two fiber reinforced thermoplastic skin layers and a foam insulation layer sandwiched between the two skin layers, and the two skin layers and the foam insulation layer are in hot melt bonding through hot melt adhesive layers.
Further, the matrix resin of the fiber reinforced thermoplastic skin layer is thermoplastic resin; preferably, the matrix resin of the fiber reinforced thermoplastic skin layer is selected from any one of Polyethylene (PE), polypropylene (PP), Polycarbonate (PC), nylon (PA), and polyethylene terephthalate (PET).
Further, the fiber reinforced thermoplastic skin layer is formed by thermally compounding a plurality of fiber reinforced thermoplastic unidirectional tapes; the reinforcing fiber of the fiber reinforced thermoplastic skin layer is selected from any one of glass fiber, basalt fiber, aramid fiber and carbon fiber.
The fiber-reinforced thermoplastic skin layer can be an XY composite belt plate, or can be formed by compounding an upper XY composite belt plate and a lower YX composite belt plate (XYYX type); or an upper YX composite belt plate and a lower XY composite belt plate (YXXY type); it is also possible to have an upper YX composite belt board and a lower YXY composite belt board, or more layers, compounded as desired.
The upper surface of the skin can be provided with a decorative layer or an anti-UV aging layer, and the addition or non-addition is not limited.
Further, the hot melt adhesive used by the hot melt adhesive layer is selected from any one of EVA hot melt adhesive, TPU hot melt adhesive, PES hot melt adhesive, PA hot melt adhesive and PO hot melt adhesive; the hot melt adhesive layer is a hot melt adhesive spraying layer or a hot melt adhesive net film.
Further, the foam heat insulation layer is selected from one of PU foam, XPS extruded sheet, AEPS polymerized polystyrene board and PET foamed graphite board.
Furthermore, reinforcing ribs or reinforcing blocks are arranged in the foam heat-insulating layer; preferably, the reinforcing bars or blocks are made of wood, metal or plastic.
The foam core material adopting the foam heat-insulating layer has the following characteristics:
1. the selected foam core material is kept within 5min when heated to the construction temperature of the hot melt adhesive film without large thermal aging or carbonization.
2. The variation quantity of the selected foam core material is kept less than or equal to 8 percent within 5min when the foam core material is heated to the construction temperature of the hot melt adhesive film.
3. The selected foam core material has elasticity at normal temperature or at the construction temperature of the hot melt adhesive film, and can rebound to at least 90 percent of the original size when the compression deformation is less than or equal to 8 percent.
Furthermore, reinforcing ribs or reinforcing blocks are arranged in the foam heat-insulating layer; preferably, the reinforcing bars or blocks are made of wood, metal or plastic. The reinforcing blocks in the foam heat-insulating layer can be embedded and bonded by glue or adhesive tape and the like.
Further, the method for preparing the fiber reinforced thermoplastic unidirectional tape comprises the following steps:
i: unwinding a creel: putting the reinforced fiber spindle on a creel, and unreeling the reinforced fiber spindle to the same platform;
II: melt extrusion: melting and plasticizing the matrix resin at the temperature of 190-280 ℃ through an extruder, and extruding the matrix resin through a die to be uniformly coated on the reinforced fiber;
III: hot melting and dipping: the reinforcing fiber coated with the matrix resin is soaked on the glass fiber uniformly by a soaking mould, and the temperature is kept at 230-250 ℃;
IV: rolling: rolling and cooling, namely rolling the impregnated reinforced fibers into sheets;
v: cutting edges and rolling: and cutting edges and folding edges by edge cutting and edge folding equipment, and winding the edges into a strip to form the fiber reinforced thermoplastic unidirectional tape.
Further, the preparation method of the fiber reinforced thermoplastic skin layer comprises the following steps:
compounding a strip X and a strip Y: putting the unidirectional tape Y on a compound machine unreeling shaft at a longitudinal angle of 90 degrees, putting the unidirectional tape X with the cut pieces laid at a transverse angle of 0 degree into a compound host machine, heating to the temperature of 180 DEG and 230 ℃, cooling, cutting edges, and coiling to form a YX compound strip; putting the unidirectional tape X at 0 degree transversely on a unreeling shaft of a compound machine, putting the unidirectional tape Y after the cut pieces are laid at 90 degrees longitudinally into a compound host machine, heating to the temperature of 180 ℃ and 230 ℃, cooling, cutting edges, and coiling to form an XY compound tape;
XY and XY compounding: and respectively placing the YX composite strip and the XY composite strip on a unreeling shaft of a compound machine, putting the YX composite strip and the XY composite strip into a compound host, heating to the temperature of 180-.
Furthermore, the fiber reinforced thermoplastic skin layer is provided with an interface layer for improving the bonding performance of matrix resin of the skin layer, and the interface layer is arranged between the fiber reinforced thermoplastic skin layer and the hot melt adhesive layer.
The upper surface of the skin can be provided with a decorative layer or an anti-UV aging layer, and the addition or non-addition is not limited.
Preferably, the interface layer is made of PET non-woven fabric, glass fiber cloth or hemp cloth.
The preparation method of the fiber reinforced thermoplastic skin layer comprises the following steps: and (3) sequentially laying the secondary composite board obtained by XY and XY compounding and the interface layer together into a compounding host, heating to the temperature of 180-230 ℃, cooling, and cutting edges to form the fiber reinforced thermoplastic skin layer.
According to the specific embodiment of the invention, the preparation method of the fiber reinforced thermoplastic insulation board comprises the following steps:
(1) continuously conveying the fiber reinforced thermoplastic skin material, the hot melt adhesive film and the foam core material to a primary heating and cooling system for hot melt compounding through a front-end unreeling device and a material paving and conveying device of a continuous production line to form a composite material;
(2) cutting the composite material obtained in the step (1) into a fiber reinforced thermoplastic insulation board in a fixed length mode.
Further, in the step (1), in the hot melting compounding, the set temperature of the heating section is higher than the melting temperature of the hot melt adhesive and lower than the softening or carbonizing temperature of the foam core material or the fiber reinforced thermoplastic skin material; the set temperature of the cooling shaping section is lower than the softening temperature of the hot melt adhesive film and the temperature difference between the cooling shaping section and the heating section is more than or equal to 40 ℃.
Further, in the step (1), the bonding area of the foam core material and the fiber reinforced thermoplastic skin material in the obtained composite material exceeds 70%. The resin content of the hot melt adhesive film in unit area needs to meet the requirement that the bonding area of the foam core material and the skin material can be effectively over 70 percent after the hot melt adhesive film is heated and melted.
The setting of the heating and cooling shaping section gap and the intermediate roll section gap of the primary heating and cooling system has the following characteristics:
1. the setting of the heating zone gap needs to be larger than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be adjusted by combining the production speed and the heating zone temperature, and the adjustment range is 1mm-15 mm.
2. The setting of the gap of the cooling zone needs to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be set and adjusted in combination with the complete rebound deformation of the foam core material, and the adjustment range is 3-20 mm.
3. The setting of the gap of the middle rolling section needs to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be set and adjusted by combining the complete rebound deformation of the foam core material, the adjustment range is 4-21 mm, the gap is slightly smaller than the cooling shaping section, and the deviation value of the gap and the cooling shaping section is 1-3 mm.
The production speed setting has the following characteristics:
1. the production speed v (m/min) is set in consideration of the melting of the hot melt adhesive film in the total heating time of the interlayer of the skin material and the heat insulation material. Total heating time t (min), total length of the melting heating section L (m), and total heating time t L/v (min).
The production speed can be set according to the heat insulation performance of the material, the temperature of the heating section and the melting property of the adhesive film, and the production speed can be measured according to the practical situation through simple experiments. In principle, the higher the temperature of the heating section, the faster the heating section is, without damaging the skin and the foam core material.
The Aeps polymerized polystyrene board is a white solid with a fine closed pore structure, which is formed by heating expandable polystyrene beads containing a volatile liquid foaming agent in a mold after heating and pre-foaming. Characteristics of the Aeps polymerized polystyrene board: 1. a-level flame retardance: the AEPS polymeric polystyrene board overcomes the defect that the traditional EPS foam board is flammable, and in the production process, through high-pressure cyclone stirring, extrusion and low-temperature foaming, the flame-retardant material forms a honeycomb fireproof isolation bin, so that flame propagation is blocked, ignition and spread are avoided, the guarantee is provided for engineering under the condition of flame, and the safety is very high. Completely reaches the A2 fire-proof standard specified by the ministry of public security. 2. Heat preservation and heat insulation: the AEPS polymerized polystyrene board has the advantages of low heat conductivity coefficient of the traditional organic heat-insulating material, and has better heat-insulating effect than common phenolic boards, foam boards and the like in the market. 3. The performance is excellent: the AEPS polymerized polystyrene board has a closed spherical molecular structure, has good dimensional stability and no toxicity, and does not generate water seepage cracks and generate the phenomena of bubbles, hollowing and falling off of a finish coat after repeated high temperature-water spraying circulation and heating-freezing circulation for a plurality of times. The A-grade fireproof heat-insulation board has better hydrophobicity than rock wool, higher strength than a phenolic aldehyde board, better toughness than foam glass, no water absorption, no powder removal, toughness and easy construction. 4. The cost performance is high: the AEPS polymerized polystyrene board keeps the advantages of low heat conductivity coefficient, good heat preservation effect and mature process of the traditional EPS foam, and has high cost performance and wide market prospect.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with the existing glue bonding technology, the fiber reinforced thermoplastic insulation board is formed by bonding a fiber reinforced thermoplastic skin and an insulation board through a hot melt adhesive film under a primary heating and cooling system, and the obtained insulation board integrates the advantages of high impact resistance, low weight, heat insulation and the like of a thermoplastic fiber reinforced board;
(2) in the preparation process, the material is formed at one time through the unreeling system, the paving and conveying system, the one-time heating and cooling compound system and the cutting system, full-continuous production can be realized, the cost is greatly reduced, and the production efficiency is improved. The production speed can reach 1.3 m/min.
(3) Compared with the existing insulation board adopting a positive pressure or negative pressure bonding mode, the production process is environment-friendly, the full thermoplastic production is pollution-free and VOC emission-free, and the bonding cost is reduced by at least 50%.
(4) Because part of the fiber reinforced thermoplastic skin is easy to be curled and deformed when the thickness is low, the warping problem in use is reduced by increasing the thickness when the fiber reinforced thermoplastic skin is used.
(5) The insulation board prepared by the invention has extremely low volatile matter in subsequent use, the use process is environment-friendly, and the skin can be recycled.
(6) The insulation board has extremely high acid and alkali resistance and salt spray corrosion resistance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of an insulation composite panel according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a continuous production line according to example 1 of the present invention.
Reference numerals
1-a skin layer; 2-hot melt adhesive layer; 3-foam heat insulation layer; 21-multiple groups of air-inflation type unwinding shafts; 22-a spreading drive system; 23-primary heating and cooling composite system; 24-a traction unit I; 25-longitudinal cutting system; 26-a tractor unit II; 27-transverse cutting system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The materials such as the hot melt adhesive film, the hot melt adhesive, the heat insulating material, and the fiber-reinforced thermoplastic unidirectional tape in the following examples are commercially available materials, and are purchased from Guangdong Polymer petrochemistry, Guangzhou Orala high polymer materials Co., Ltd, Shanghai Tianyang Hot melt adhesive Co., Ltd, and the like.
Example 1
As shown in fig. 1, the embodiment provides a fiber reinforced thermoplastic insulation board, the fiber reinforced thermoplastic insulation board includes two layers of fiber reinforced thermoplastic skin layers 1 and a foam insulation layer 3 sandwiched between the two layers of the skin layers 1, and the two layers of the skin layers 1 and the foam insulation layer 3 are hot-melt bonded through a hot melt adhesive layer 2.
The thickness of the skin layer 1 is 1.5mm (can be any value of 1.2-1.8 mm), the skin layer 1 is polypropylene-based glass fiber reinforced thermoplastic composite material, the exposed surface is a white surface film, and the interface layer of the other surface is coated with PET non-woven fabric.
The hot melt adhesive layer is a modified EVA (ethylene-vinyl acetate copolymer) hot melt adhesive net film, the weight per unit area is 60 g/square meter, the construction temperature is 105 ℃, and the hot melt adhesive layer can also be any one of EVA hot melt adhesive, TPU hot melt adhesive, PES hot melt adhesive, PA hot melt adhesive and PO hot melt adhesive.
The foam heat-insulating layer 3 provides heat-insulating property, and polyurethane foam with the density of 40kg/m is selected in the embodiment 3 And the thickness is 97 mm.
Further, the matrix resin of the fiber-reinforced thermoplastic skin layer 1 may be any one of Polyethylene (PE), polypropylene (PP), Polycarbonate (PC), nylon (PA), and polyethylene terephthalate (PET).
Further, the reinforcing fiber of the fiber reinforced thermoplastic skin layer 1 is selected from any one of glass fiber, basalt fiber, aramid fiber and carbon fiber.
The preparation method of the fiber reinforced thermoplastic unidirectional tape comprises the following steps:
i: unwinding a creel: putting the reinforced fiber spindle on a creel, and unreeling the reinforced fiber spindle to the same platform;
II: melt extrusion: melting and plasticizing the matrix resin at the temperature of 190-280 ℃ through an extruder, and extruding the matrix resin through a die to be uniformly coated on the reinforced fiber;
III: hot melting and dipping: the reinforcing fiber coated with the matrix resin is soaked on the glass fiber uniformly by a soaking mould, and the temperature is kept at 230-250 ℃;
IV: rolling: rolling and cooling, namely rolling the impregnated reinforced fibers into sheets;
v: cutting edges and rolling: and cutting edges and folding edges by edge cutting and edge folding equipment, and winding the edges into a strip to form the fiber reinforced thermoplastic unidirectional tape.
The fiber reinforced thermoplastic skin layer is formed by compounding an XY composite belt plate and a YX composite belt plate, the XY composite belt plate and the YX composite belt plate are both formed by compounding a plurality of fiber reinforced thermoplastic unidirectional belts, the upper layer of the XY composite belt plate is provided with a plurality of transverse fiber reinforced thermoplastic unidirectional belts, and the lower layer of the XY composite belt plate is provided with a plurality of longitudinal fiber reinforced thermoplastic unidirectional belts; the upper layer of the YX composite belt plate is provided with a plurality of longitudinal fiber reinforced thermoplastic unidirectional belts, and the lower layer is provided with a plurality of transverse fiber reinforced thermoplastic unidirectional belts.
Further, the preparation method of the fiber reinforced thermoplastic skin layer comprises the following steps:
compounding a strip X and a strip Y: putting the unidirectional tape Y on a compound machine unreeling shaft at a longitudinal angle of 90 degrees, putting the unidirectional tape X with the cut pieces laid at a transverse angle of 0 degree into a compound host machine, heating to the temperature of 180 DEG and 230 ℃, cooling, cutting edges, and coiling to form a YX compound strip; putting the unidirectional tape X at 0 degree transversely on a unreeling shaft of a compound machine, putting the unidirectional tape Y after the cut pieces are laid at 90 degrees longitudinally into a compound host machine, heating to the temperature of 180 ℃ and 230 ℃, cooling, cutting edges, and coiling to form an XY compound tape;
XY and XY compounding: and respectively placing the YX composite strip and the XY composite strip on a unreeling shaft of a compound machine, putting the YX composite strip and the XY composite strip into a compound host, heating to the temperature of 180-.
The fiber reinforced thermoplastic skin layer can be an XY composite belt plate, or can be formed by compounding an upper XY composite belt plate and a lower YX composite belt plate (XYYX type); or an upper YX composite belt plate and a lower XY composite belt plate (YXXY type); it is also possible to have an upper YX composite belt board and a lower YXY composite belt board, or more layers, compounded as desired.
The upper surface of the skin can also be provided with a decorative layer or an anti-UV aging layer, and the addition or non-addition is not limited.
Furthermore, fiber reinforcement thermoplasticity skin layer 1 is equipped with the improvement skin layer 1's matrix resin adhesion performance's interface layer, the interface layer sets up between fiber reinforcement thermoplasticity skin layer 1 and the hot melt adhesive layer.
Preferably, the interface layer is made of PET non-woven fabric, glass fiber cloth or hemp cloth.
The preparation method of the fiber reinforced thermoplastic skin layer with the interface layer comprises the following steps: and (3) sequentially laying the secondary composite board obtained by XY and XY compounding and the interface layer together into a compounding host, heating to the temperature of 180-230 ℃, cooling, and cutting edges to form the fiber reinforced thermoplastic skin layer.
Further, the hot melt adhesive film is selected from any one of EVA hot melt adhesive, TPU hot melt adhesive, PES hot melt adhesive, PA hot melt adhesive and PO hot melt adhesive.
The hot melt adhesive film is sprayed hot melt adhesive or a hot melt adhesive net film.
Further, the foam heat-insulating layer 3 is selected from one of PU foam, XPS extruded sheet, AEPS polymerized polystyrene board and PET foamed graphite board.
The foam core material adopting the foam heat-insulating layer 3 has the following characteristics:
1. the selected foam core material is kept within 5min when heated to the construction temperature of the hot melt adhesive film without large thermal aging or carbonization.
2. The variation quantity of the selected foam core material is kept less than or equal to 8 percent within 5min when the foam core material is heated to the construction temperature of the hot melt adhesive film.
3. The selected foam core material has elasticity at normal temperature or at the construction temperature of the hot melt adhesive film, and can rebound to at least 90 percent of the original size when the compression deformation is less than or equal to 8 percent.
Furthermore, a reinforcing rib or a reinforcing block is arranged in the foam heat-insulating layer 3.
Preferably, the reinforcing bars or blocks are made of wood, metal or plastic. The reinforcing blocks in the foam heat-insulating layer 3 can be embedded and bonded by glue or adhesive tape and the like.
A method of making a fiber reinforced thermoplastic insulation board, the method comprising the steps of:
(1) continuously conveying the fiber reinforced thermoplastic skin material, the hot melt adhesive film and the foam core material to a primary heating and cooling system for hot melt compounding through a front-end unreeling device and a material paving and conveying device of a continuous production line to form a composite material;
in the hot melting compounding process, the set temperature of the heating section is higher than the melting temperature of the hot melt adhesive and lower than the softening or carbonization temperature of the foam core material or the fiber reinforced thermoplastic skin material; the set temperature of the cooling shaping section is lower than the softening temperature of the hot melt adhesive film, and the temperature difference between the cooling shaping section and the heating section is more than or equal to 40 ℃;
the bonding area of the foam core material and the fiber reinforced thermoplastic skin material in the obtained composite material exceeds 70 percent. The resin content of the hot melt adhesive film in unit area needs to meet the requirement that the bonding area of the foam core material and the skin material can be effectively more than 70% after the hot melt adhesive film is heated and melted;
(2) cutting the composite material obtained in the step (1) into a fiber reinforced thermoplastic insulation board in a fixed length mode.
The specific production line is illustrated as follows:
the setting of the heating and cooling shaping section gap and the intermediate roll section gap of the primary heating and cooling system has the following characteristics:
1. the setting of the heating zone gap needs to be larger than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be adjusted by combining the production speed and the heating zone temperature, and the adjustment range is 1mm-15 mm.
2. The setting of the gap of the cooling zone needs to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be set and adjusted in combination with the complete rebound deformation of the foam core material, and the adjustment range is 3-20 mm.
3. The setting of the gap of the middle rolling section is required to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap is required to be set and adjusted in combination with the complete rebound deformation of the foam core material, the adjustment range is 4-21 mm, the gap is slightly smaller than the cooling shaping section, and the deviation value between the gap and the cooling shaping section is 1-3 mm.
The production speed setting has the following characteristics:
1. the production speed v (m/min) is set in consideration of the melting of the hot melt adhesive film in the total heating time of the interlayer of the skin material and the heat insulation material. Total heating time t (min), total length of the melting heating section L (m), and total heating time t L/v (min).
The production speed can be set according to the heat insulation performance of the material, the temperature of the heating section and the melting property of the adhesive film, and the production speed can be measured according to the practical situation through simple experiments. In principle, the higher the temperature of the heating section, the faster it is without damaging the skin and the foam core.
Description of production line:
fig. 2 is a continuous production line of fiber-reinforced hot-melt adhesive insulation boards, which is composed of a continuous production apparatus, wherein the continuous production apparatus includes an unwinding system, a material spreading and conveying system 27, a primary heating and cooling composite system 28 and cutting systems 31 and 32, which are connected in sequence, the auxiliary material conveying system 27 and the unwinding system are placed in parallel, the unwinding system is provided with 6 groups of air-expanding unwinding shafts 21-26, each air-expanding unwinding shaft is provided with a raw material placing inlet, fiber-reinforced hot-melt adhesive skin materials are placed from the raw material placing inlet, 4 groups of high polymer interface layer unwinding frame bodies are provided for placing interface layers, the unwinding shafts and the unwinding frames are connected and fixed through an interlocking structure, and the unwinding shafts are used for placing skins;
more specifically, the unwinding systems 21-26 are further configured with a lateral fine-tuning mechanism for correcting left and right deviation of the raw material roll, and a tension control mechanism for controlling the magnitude of the unwinding tension of the raw material.
The spreading and conveying system 27 is a spreading platform with a conveying belt, foam heat-insulating materials are put in the position, a heating and cooling composite system 28 is a belt or steel belt type composite machine, the belt or steel belt type composite machine is provided with an upper conveying belt or a lower conveying belt or a steel belt which independently run, a heating unit, a rolling unit and a cooling and shaping unit, the heating unit is provided with an electric heater or an oil heater for melting hot melt adhesive, the rolling unit is provided with a pressing machine for pressing multilayer materials, the cooling and shaping unit is provided with a cooling and shaping unit which is connected with an external refrigerator for cooling, the belt is polytetrafluoroethylene-infiltrated fine woven glass fiber cloth, the steel belt is a whole steel conveying belt, one surface of the belt or the steel belt is in contact with a product, the other surface of the belt or the steel belt is in contact with a heating device or a cooling device, and heat conduction or cooling through the belt or the steel belt is realized, transferring the heat to a product, pressing, cooling and shaping by cooling conduction to form the heat-insulating plate strip.
The heating unit melts hot melt adhesive through an electric heating or oil heater, the multi-layer materials are pressed into a whole through the pressing of the rolling unit, the hot melt adhesive materials are subjected to physical reaction and are cooled and formed through the cooling and shaping unit, the skin is compounded on the surface of the foam, and the cooling and shaping unit is connected with an external refrigerator to cool the foam.
The setting of the heating zone gap needs to be larger than the sum of the thicknesses of all raw materials before entering the machine, the specific gap needs to be adjusted by combining the production speed and the heating zone temperature, and the adjusting range is 1mm-15 mm.
The setting of the gap of the cooling zone needs to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be set and adjusted in combination with the complete rebound deformation of the foam core material, and the adjustment range is 3-20 mm.
The setting of the gap of the middle roller press unit needs to be smaller than the sum of the thicknesses of the raw materials before entering the machine, the specific gap needs to be set and adjusted in combination with the complete rebound deformation of the foam core material, the adjustment range is 4-21 mm, the gap is slightly smaller than the cooling and shaping unit, and the deviation value between the gap and the cooling and shaping unit is 1-3 mm.
The plate is compounded into a heat preservation plate strip through a primary heating and cooling compound system 28 and then enters a first traction unit 29 and a second traction unit 30, the first traction unit 29 and the second traction unit 30 are both provided with an upper rubber roller and a lower rubber roller, the upper rubber rollers are pushed and pressed by a cylinder, the lower rubber rollers are provided with active power, a speed difference is arranged between the traction machine and a host, and the traction machine drags the plate in the host so as to tension the plate and facilitate cutting.
The cutting system is composed of a plurality of transverse cutting machines 32 and a plurality of longitudinal cutting machines 31, the prepared heat preservation plate belt firstly enters the longitudinal cutting system 27, a plurality of groups of longitudinal cutting saws are arranged on the lead screw guide rail for longitudinal cutting, and the longitudinal saw blade can be a vertical plate cutting right angle, a parallel cutting step or an angle cutting oblique angle. Then the plate enters a transverse cutting system 7, and the cutting machine moves along the movement direction of the plate on the guide rail during cutting, so that the plate with different required shapes is cut.
The process parameters of this example are set as follows:
the unwind spool 22 places the lower skin material, with the tension set at 80%,
the unwinding shaft 23 is provided with a hot melt adhesive film with a tension set to 2%,
the upper skin material is placed on the unreeling shaft 25, the tension is set to 80%,
the unwinding shaft 24 is provided with a hot melt adhesive film with a tension set to 2%,
the set temperature of the heating machine set is 130 ℃, and the gap is 106 mm;
the set temperature of the cooling setting machine group is 15 ℃, and the gap is 95 mm;
the gap of the middle roller press unit is 94 mm;
production speed of the present example: 1.3 m/min.
The fiber reinforced hot melt adhesive insulation board (XYYX type skin) obtained in the embodiment 1 has the thickness of 40mm and the density of the insulation core material of 40kg/m 3 Foam material polyurethane, with bonding glass steel heated board, bonding various steel sheet heated board, bonding aluminum plate heated board carry out the comparison, the result is as following table 1:
TABLE 1 comparison of several insulation boards
Figure BDA0003624564210000121
As can be seen from the table above, the weight of the fiber-reinforced hot-melt adhesive insulation board skin obtained by the method is 1.4kg per square meter; the density of the heat-insulation board is lower than that of other heat-insulation boards, the density is 5.28kg per square meter, and the heat-insulation board has better acid and alkali corrosion resistance and better impact resistance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The utility model provides a fiber reinforcement thermoplasticity heated board, its characterized in that, fiber reinforcement thermoplasticity heated board includes two-layer fiber reinforcement thermoplasticity skin layer and presss from both sides two-layerly foam heat preservation between the skin layer, it is two-layer the skin layer with foam heat preservation passes through hot melt adhesive layer hot melt bonding.
2. The fiber reinforced thermoplastic insulation board of claim 1, wherein the matrix resin of the fiber reinforced thermoplastic skin layer is a thermoplastic resin; preferably, the matrix resin of the fiber-reinforced thermoplastic skin layer is selected from any one of Polyethylene (PE), polypropylene (PP), Polycarbonate (PC), nylon (PA), and polyethylene terephthalate (PET).
3. The fiber reinforced thermoplastic insulation board of claim 1, wherein the fiber reinforced thermoplastic skin layer is thermally compounded from a plurality of fiber reinforced thermoplastic unidirectional tapes; the fiber reinforced thermoplastic skin layer is characterized in that the reinforcing fiber of the fiber reinforced thermoplastic skin layer is selected from any one of glass fiber, basalt fiber, aramid fiber and carbon fiber, and the foam heat insulation layer is selected from one of PU foam, XPS extruded sheet, AEPS polymerized polystyrene board and PET foamed graphite board.
4. The fiber reinforced thermoplastic insulation board of claim 3, wherein the preparation method of the fiber reinforced thermoplastic unidirectional tape comprises:
i: unwinding a creel: putting the reinforced fiber spindle on a creel, and unreeling the reinforced fiber spindle to the same platform;
II: melt extrusion: melting and plasticizing the matrix resin at the temperature of 190-280 ℃ through an extruder, and extruding the matrix resin through a die to be uniformly coated on the reinforced fiber;
III: hot melting and dipping: the reinforcing fiber coated with the matrix resin is soaked on the glass fiber uniformly by a soaking mould, and the temperature is kept at 230-250 ℃;
IV: rolling: rolling and cooling, namely rolling the impregnated reinforced fibers into sheets;
v: cutting edges and rolling: and cutting edges and folding edges by edge cutting and edge folding equipment, and winding the edges into a strip to form the fiber reinforced thermoplastic unidirectional tape.
5. The fiber reinforced thermoplastic insulation board of claim 3 or 4, wherein the preparation method of the fiber reinforced thermoplastic skin layer comprises:
compounding a strip X and a strip Y: putting the unidirectional tape Y on a compound machine unreeling shaft at a longitudinal angle of 90 degrees, putting the unidirectional tape X with the cut pieces laid at a transverse angle of 0 degree into a compound host machine, heating to the temperature of 180 DEG and 230 ℃, cooling, cutting edges, and coiling to form a YX compound strip; putting the unidirectional tape X at 0 degree transversely on a unreeling shaft of a compound machine, putting the unidirectional tape Y after the cut pieces are laid at 90 degrees longitudinally into a compound host machine, heating to the temperature of 180 ℃ and 230 ℃, cooling, cutting edges, and coiling to form an XY compound tape;
XY and XY compounding: and respectively placing the YX composite strip and the XY composite strip on a unreeling shaft of a compound machine, putting the YX composite strip and the XY composite strip into a compound host, heating to the temperature of 180-.
6. The fiber reinforced thermoplastic insulation board of claim 5, wherein the fiber reinforced thermoplastic skin layer is provided with an interface layer that improves the matrix resin bonding properties of the skin layer, the interface layer being disposed between the fiber reinforced thermoplastic skin layer and the hot melt adhesive layer; preferably, the interface layer is made of a PET non-woven fabric, a glass fiber cloth or a linen cloth; the preparation method of the fiber reinforced thermoplastic skin layer comprises the following steps: and (3) sequentially laying the secondary composite board obtained by XY and XY compounding and the interface layer together into a compounding host, heating to the temperature of 180-230 ℃, cooling, and cutting edges to form the fiber reinforced thermoplastic skin layer.
7. The fiber reinforced thermoplastic insulation board according to claim 1, wherein the hot melt adhesive used in the hot melt adhesive layer is selected from any one of EVA hot melt adhesive, TPU hot melt adhesive, PES hot melt adhesive, PA hot melt adhesive and PO hot melt adhesive; the hot melt adhesive layer is a hot melt adhesive spraying layer or a hot melt adhesive net film, and reinforcing ribs or reinforcing blocks are arranged in the foam heat insulation layer; preferably, the reinforcing bars or blocks are made of wood, metal or plastic.
8. A method of making the fiber reinforced thermoplastic insulation board of claim 1, comprising the steps of:
(1) continuously conveying the fiber reinforced thermoplastic skin material, the hot melt adhesive film and the foam core material to a primary heating and cooling system for hot melt compounding through a front-end unreeling device and a material paving and conveying device of a continuous production line to form a composite material;
(2) cutting the composite material obtained in the step (1) into a fiber reinforced thermoplastic insulation board in a fixed length mode.
9. The preparation method of the fiber reinforced thermoplastic insulation board according to claim 8, wherein in the step (1), in the hot melt compounding, the set temperature of the heating section is higher than the melting temperature of the hot melt adhesive and lower than the softening or carbonizing temperature of the foam core material or the fiber reinforced thermoplastic skin material; the set temperature of the cooling shaping section is lower than the softening temperature of the hot melt adhesive film and the temperature difference between the cooling shaping section and the heating section is more than or equal to 40 ℃.
10. The preparation method of the fiber reinforced thermoplastic insulation board according to claim 8, wherein in the step (1), the bonding area between the foam core material and the fiber reinforced thermoplastic skin material in the obtained composite material exceeds 70%.
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CN104563313A (en) * 2014-12-31 2015-04-29 江苏凯宇建材科技有限公司 Fireproof composite thermal-insulation board
CN107323052A (en) * 2017-06-26 2017-11-07 上海冰熊专用汽车有限公司 A kind of thermoplasticity warming plate and its manufacture method and production system
WO2022041358A1 (en) * 2020-08-24 2022-03-03 上海骏赐投资管理中心(有限合伙) Novel composite panel and production method therefor
CN213947646U (en) * 2020-10-29 2021-08-13 上海沥高科技股份有限公司 Composite sandwich insulation board
CN214563570U (en) * 2021-01-18 2021-11-02 浙江华正新材料股份有限公司 Sandwich composite board
CN113561600A (en) * 2021-07-29 2021-10-29 浙江浩卓新材料科技有限公司 Preparation method of fiber-reinforced PP (polypropylene) foam insulation board
CN217514710U (en) * 2022-04-29 2022-09-30 城资泰诺(山东)新材料科技有限公司 Fiber-reinforced thermoplastic insulation board

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114953481A (en) * 2022-04-29 2022-08-30 城资泰诺(山东)新材料科技有限公司 Production line of fiber-reinforced hot-melt bonding skin hot-melt bonding insulation board
CN115648749A (en) * 2022-10-12 2023-01-31 江苏阿米巴材料有限公司 Short glass fiber felt and PET structural foam composite board and processing method thereof

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