CN104290372B - A kind of continuous fiber reinforced thermoplastic polymer temperature control panel - Google Patents

Abstract

A continuous fiber-reinforced thermoplastic polymer temperature-regulating panel includes a face plate, a bottom plate, a honeycomb core layer and a phase-change energy storage material filled in the honeycomb core layer. The panel, bottom plate and honeycomb core layer are made of sheets of continuous fiber reinforced thermoplastic polymer composite materials filled with modified thermally conductive fillers. The phase change energy storage material of the honeycomb core layer is filled in several independent cavities in the honeycomb core layer. The panel and the bottom plate are respectively compounded with the upper and lower surfaces of the honeycomb core layer through thermal fusion. The invention adopts high thermal conductivity material and polymer blending, and prepares high thermal conductivity continuous fiber reinforced thermoplastic polymer panel through double-sided coating method, which has high specific modulus and specific strength. The honeycomb core is made of the same material as the panel, and the two are fused and bonded to make the combination firm. The phase change material is filled in the honeycomb hole, the addition amount is large, and the problem of phase change material precipitation is effectively avoided. The application field of the present invention is especially suitable for decoration of indoor decoration ceilings and walls.

Description

A continuous fiber reinforced thermoplastic polymer tempering panel

technical field

The invention relates to a building or decoration plate with functions of constant temperature, energy storage and automatic temperature adjustment. Specifically disclosed is a continuous fiber reinforced thermoplastic polymer tempering panel.

Background technique

Building a resource-saving and environment-friendly society is the guiding principle of national development today. In the field of engineering, the use of phase change panels with self-adjusting temperature can not only maintain the indoor temperature, but also reduce the emission of greenhouse gases, so as to achieve the purpose of energy saving and emission reduction. However, the existing phase-change energy storage plates use metal plates to sandwich microcapsule phase-change materials, and there are key problems such as easy leakage and flow of phase-change materials during cutting, and poor decorative effects.

Generally, the preparation of phase change materials adopts the blending modification method, that is, the phase change materials are added to the matrix polymer through high-speed mixers, twin-screw extruders, static mixers and other mixing equipment, such as Chinese patent 02148487.2, The phase change energy storage material is prepared by blending paraffin wax and high density polyethylene through an extruder. Due to the weak interfacial bonding between the phase change material and the matrix polymer, the phase change material is very easy to leak to the surface of the product, resulting in a rapid decrease in the latent heat of phase change, a decrease in the temperature adjustment ability of the molded product, and even failure. Type phase change materials, the addition of phase change materials is not large, and the temperature adjustment effect is not good. In addition, due to the low thermal conductivity of the thermoplastic matrix, the existing thermoplastic phase-change temperature-regulating plates have poor temperature-regulating effects. The surface layer of the temperature-regulating plate is made of metal material, but the metal material is easily corroded and rusted in a humid environment with a large temperature difference, which affects its strength and service life, and the surface layer and core layer of the metal material are mostly glued together. The environmental protection of the product is poor, and the bonding force between the panel and the core layer is poor, which affects its use effect.

Chinese patent 20101014140496.4 proposes a self-regulating phase change energy storage panel, including a base plate, a panel with high thermal conductivity, and a metal honeycomb core layer sandwiched between the panel and the base plate, and the base plate, panel and honeycomb core layer are sealed and bonded , all or part of the phase change unit is filled with phase change energy storage materials, wherein the panels are aluminum plates, stainless steel plates, color steel plates or stone plates. However, due to the use of metal or stone panels, the bonding between the panel and the honeycomb structure is not good, the bond is not firm, and the environmental protection is poor, and there are also metal materials that are easily corroded and rusted in a humid environment with large temperature differences, which affects its strength. and service life issues.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the above-mentioned phase change plate, and provide a continuous fiber reinforced thermoplastic polymer temperature control plate with good encapsulation effect, high thermal conductivity, good temperature regulation effect, light weight, high strength and durability.

In order to achieve the above object, the present invention adopts the following technical solutions: continuous fiber reinforced thermoplastic polymer temperature control panel, including face plate, base plate, honeycomb core layer and phase change energy storage material filled in the honeycomb core layer, face plate, base plate and honeycomb core layer The core layer is made of a continuous fiber reinforced thermoplastic polymer composite sheet, and the phase change energy storage material is filled in several independent cavities in the honeycomb core layer. The face plate and the bottom plate are respectively combined with the upper and lower surfaces of the honeycomb core layer by thermal melting .

The continuous fiber reinforced thermoplastic polymer composite material includes continuous fiber, thermoplastic polymer and modified thermal conductive filler.

The continuous fiber is selected from one of glass fiber, carbon fiber and aramid fiber, the thermoplastic polymer is selected from one of polyethylene, polypropylene, polycarbonate and nylon, and the modified thermally conductive filler is selected from graphite, calcium carbonate, One or more of alumina, aluminum nitride, silicon nitride, and metal powder, based on 100 parts of the total weight of the thermoplastic polymer and the modified thermally conductive filler, the added amount of the modified thermally conductive filler is 10-20 parts.

The continuous fiber-reinforced thermoplastic polymer composite material sheet is prepared by blending and plasticizing thermoplastic polymer and modified thermally conductive filler through an extruder and continuous fiber through double-sided coating method. The thickness of the sheet is 0.2 -1.0mm.

The double-sided coating method is specifically: after the continuous fiber bundles are evenly distributed and guided by the creel, they are pulled and flattened by an advanced pressure roller tractor, and then dispersed by multiple dispersing rollers, and are closely arranged and unfolded to ensure that each The surface tension of the fiber bundle is consistent without gaps and reaches a predetermined width; the fiber tape after expansion enters the prepreg device, the thermoplastic polymer and the modified thermal conductive filler are melted and plasticized by the extruder, and extruded through the sheet die, and the fiber tape and The blend of thermoplastic polymer and modified thermally conductive filler is compounded at the exit of the mold, so that both sides of the fiber tape are compounded with the blend of thermoplastic polymer and modified thermally conductive filler (1 extruder, 2 molds , the two molds have a positional relationship, so that the fibers are taken away from the S type), and the fiber content is controlled by controlling the die gap of the extruder die and controlling the extrusion volume, because the fiber quality is constant, the less the extrusion volume, the higher the fiber content High; then enter the three-roll impregnation rolling device, under the action of roll pressing, the blend of thermoplastic polymer and modified thermal conductive filler is completely impregnated into the inside of the fiber tape; the fully impregnated fiber tape then enters the double-roll haul-off machine, in At the same time of traction, it is extruded to a predetermined thickness; finally, it is a coiling device to prepare a sheet of continuous fiber-reinforced thermoplastic composite material.

The honeycomb core layer is prepared by continuous fiber-reinforced thermoplastic polymer composite material sheets through molding bonding or rolling fusion molding, and the thickness of the honeycomb core layer is 5-20mm.

The phase change energy storage material filled in the honeycomb core layer is a phase change energy storage material or a composite phase change energy storage material, and the phase change point is 20-23°C.

The present invention also relates to a method for preparing the above-mentioned continuous fiber reinforced thermoplastic polymer tempering plate, comprising the following steps:

(1) Lay the continuous fiber-reinforced thermoplastic polymer composite sheet on the lower surface of the honeycomb core layer and send it into the steel belt press. The upper steel belt is not heated, and the lower steel belt is heated. The continuous fiber-reinforced thermoplastic polymer composite sheet and the honeycomb core layer pass through the heating zone and the cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polymer composite sheet is melt-bonded to the honeycomb core by hot pressing and cold pressing (2) Place the laminated plate on the lower surface in the phase change material filling machine, and fill the phase change energy storage material or composite phase change energy storage material in the honeycomb core layer through the filling machine. (3) Lay the continuous fiber-reinforced thermoplastic polymer composite sheet on the upper surface of the filled honeycomb core layer, and send it into the steel belt press, the upper steel belt is heated, and the lower steel belt is not heated , the rotating motion of the steel belt press drags the continuous fiber-reinforced thermoplastic polymer composite sheet and the honeycomb core layer through the heating zone and the cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polymer is formed by hot pressing and cold pressing The composite material sheet is melted and bonded to the upper surface of the filled honeycomb core layer; (4) a continuous fiber reinforced thermoplastic polymer temperature regulating plate is obtained. Among them, in step (1), the hot-pressing temperature is 210-260°C, the hot-pressing pressure is 2-4MPa, the hot-pressing time is 20-50s, the cold-pressing temperature is 60-80°C, the cold-pressing pressure is 2-4MPa, and the cold-pressing time 5-10min. In step (3), the hot-pressing temperature is 210-260°C, the hot-pressing pressure is 2-4MPa, the hot-pressing time is 20-50s, the cold-pressing temperature is 40-60°C, the cold-pressing pressure is 2-4MPa, and the cold-pressing time is 5- 10min.

Compared with the prior art, the present invention has the following four beneficial effects.

1. The continuous fiber-reinforced thermoplastic polymer temperature-regulating plate prepared by the present invention has a surface layer and a core layer that are continuous fiber-reinforced thermoplastic composite materials, and the continuous fiber-reinforced thermoplastic composite material sheet and the honeycomb core layer are bonded together by heating and melting, The interfacial bonding force is strong, and there will be no leakage of phase change materials; moreover, after the surface layer and core layer are reinforced by continuous fibers, they have high specific strength and large specific modulus, which can effectively improve the strength and load bearing of phase change temperature-regulating plates. capacity, can be used for load-bearing structures, and has strong chemical corrosion resistance, anti-aging, and anti-penetration properties.

2. The prepared continuous fiber-reinforced thermoplastic polymer temperature-regulating plate has modified thermally conductive fillers added to its surface layer and core layer, and the modified thermally conductive fillers are evenly distributed in the polymer matrix through extruder blending, which can effectively Improve the thermal conductivity of the surface layer and the core layer, thereby improving the thermal conductivity and temperature-regulating effect of the temperature-regulating phase-change plate.

3. The filling amount of the phase change material in the phase change plate prepared by the present invention is large. The honeycomb core disperses the phase change material into many smaller units. These units are mutually independent closed spaces. A large amount of phase change materials can be added to each closed space, and the addition of phase change materials can be adjusted by controlling the structure of the inner pores of the honeycomb core. The maximum filling amount can reach more than 50-60%, which can effectively improve the temperature adjustment effect of the phase change plate.

4. The surface layer of the continuous fiber-reinforced thermoplastic polymer temperature-regulating plate prepared by the present invention is thermoplastic, which can be easily processed for secondary processing such as coloring and decoration, which improves its application field, and is especially suitable for interior decoration ceiling and wall decoration .

Description of drawings

Figure 1 is a schematic diagram of the structure of a continuous fiber reinforced thermoplastic polymer temperature regulating plate.

Fig. 2 is a schematic cross-sectional structure diagram of a continuous fiber reinforced thermoplastic polymer temperature regulating plate.

1-panel, 2-bottom plate, 3-honeycomb core layer, 4-phase change material.

detailed description

In order to explain the present invention better, the main content of the present invention is further illustrated below in conjunction with specific examples, but the content of the present invention is not limited to the following examples.

Example 1:

The composite material used includes glass fiber, polypropylene, graphite and calcium carbonate, wherein, based on 100 parts by weight of thermoplastic polymer and modified thermally conductive filler, polypropylene is 85 parts by weight, graphite is 10 parts by weight, and calcium carbonate is 5 parts by weight . Polypropylene, graphite and calcium carbonate are blended and plasticized by an extruder, and then coated with glass fibers on both sides to prepare a continuous fiber-reinforced thermoplastic polymer composite sheet. The thickness of the continuous fiber-reinforced thermoplastic polypropylene composite sheet is The thickness of the honeycomb core layer is 0.2mm; the honeycomb core layer is made of the prepared continuous fiber-reinforced thermoplastic polypropylene composite material sheet through molding bonding, and the thickness of the honeycomb core layer is 5mm; The change point is 21°C. Its preparation process is as follows:

(1) Lay the prepared continuous fiber-reinforced thermoplastic polypropylene composite sheet on the lower surface of the honeycomb core layer and send it into the steel belt press. The upper steel belt is not heated, the lower steel belt is heated, and the rotation of the steel belt press The motion drags the continuous fiber-reinforced thermoplastic polypropylene composite sheet and the honeycomb core layer to pass through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polypropylene composite sheet is melt-bonded by hot pressing and cold pressing. For the lower surface of the honeycomb core layer, the hot pressing temperature is 210°C, the hot pressing pressure is 2MPa, the hot pressing time is 20s, the cold pressing temperature is 60°C, the cold pressing pressure is 2MPa, and the cold pressing time is 5min;

(2) Place the laminated sheet on the lower surface in a phase change material filling machine, and fill the phase change energy storage material in several independent chambers in the honeycomb core layer through the filling machine; (3) Put the prepared continuous fiber The reinforced thermoplastic polypropylene composite material sheet is placed on the upper surface of the filled honeycomb core layer and sent to the steel belt press, the upper steel belt is heated, the lower steel belt is not heated, and the rotary motion of the steel belt press drags The continuous fiber-reinforced thermoplastic polypropylene composite sheet and the honeycomb core layer pass through the heating zone and cooling zone of the steel belt press simultaneously, and the continuous fiber-reinforced thermoplastic polypropylene composite sheet is melt-bonded to the filling container by hot pressing and cold pressing. On the upper surface of the honeycomb core layer, the hot-pressing temperature is 210°C, the hot-pressing pressure is 2MPa, the hot-pressing time is 20s, the cold-pressing temperature is 40°C, the cold-pressing pressure is 2MPa, and the cold-pressing time is 5min.

Example 2:

The composite materials used include carbon fiber, polyamide, aluminum nitride and alumina, wherein, based on 100 parts by weight of thermoplastic polymer and modified thermally conductive filler, 80 parts by weight of polyamide, 10 parts by weight of aluminum nitride, and 100 parts by weight of aluminum oxide 10 parts by weight. Polyamide, aluminum nitride and alumina are blended and plasticized by an extruder, and then double-sided coated with carbon fibers to prepare continuous fiber-reinforced thermoplastic polymer composite sheets, and continuous fiber-reinforced thermoplastic polyamide composite sheets. The thickness is 0.6mm; the honeycomb core layer is prepared by rolling and bonding the prepared continuous fiber reinforced thermoplastic polyamide composite material sheet, and the thickness of the honeycomb core layer is 10mm; the phase change energy storage material adopts composite phase change energy storage material, the phase transition point is 23°C. Its preparation process is as follows:

(1) Lay the prepared continuous fiber-reinforced thermoplastic polyamide composite sheet on the lower surface of the honeycomb core layer and send it into the steel belt press. The upper steel belt is not heated, the lower steel belt is heated, and the rotation of the steel belt press The motion drags the continuous fiber-reinforced thermoplastic polyamide composite sheet and the honeycomb core layer to pass through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polyamide composite sheet is melt-bonded by hot pressing and cold pressing. For the lower surface of the honeycomb core layer, the hot pressing temperature is 260°C, the hot pressing pressure is 3MPa, the hot pressing time is 30s, the cold pressing temperature is 80°C, the cold pressing pressure is 3MPa, and the cold pressing time is 10min;

(2) Place the laminated plate on the lower surface in the phase change material filling machine, and fill the phase change energy storage material into several independent chambers in the honeycomb core layer through the filling machine;

(3) Lay the prepared continuous fiber-reinforced thermoplastic polyamide composite material sheet on the upper surface of the filled honeycomb core layer, and send it into the steel belt press. The upper steel belt is heated, and the lower steel belt is not heated. The rotary motion of the belt press drags the continuous fiber reinforced thermoplastic polyamide composite sheet and the honeycomb core layer through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber reinforced thermoplastic polyamide composite material is formed by hot pressing and cold pressing The sheet is melted and bonded to the upper surface of the filled honeycomb core layer. The hot-pressing temperature is 260°C, the hot-pressing pressure is 3MPa, the hot-pressing time is 30s, the cold-pressing temperature is 80°C, the cold-pressing pressure is 3MPa, and the cold-pressing time is 10min.

Example 3:

The composite material used includes aramid fiber, polycarbonate, silicon nitride and metal powder, wherein, based on 100 parts by weight of thermoplastic polymer and modified thermally conductive filler, polycarbonate is 90 parts by weight, and silicon nitride is 5 parts by weight , The metal powder is 5 parts by weight. Polycarbonate, silicon nitride and metal powder are blended and plasticized by an extruder, and then double-sided coated with aramid fiber to prepare continuous fiber reinforced thermoplastic polycarbonate composite material sheet, continuous fiber reinforced thermoplastic polycarbonate The thickness of the composite material sheet is 1.0mm; the honeycomb core layer is prepared by rolling and bonding the prepared continuous fiber reinforced thermoplastic polycarbonate composite material sheet, and the thickness of the honeycomb core layer is 20mm; the phase change energy storage material The phase change energy storage material is selected, and the phase change point is 22°C. Its preparation process is as follows:

(1) Lay the prepared continuous fiber-reinforced thermoplastic polycarbonate composite sheet on the lower surface of the honeycomb core layer and send it into the steel belt press. The upper steel belt is not heated, and the lower steel belt is heated. The rotating motion drags the continuous fiber-reinforced thermoplastic polycarbonate composite sheet and the honeycomb core layer through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polycarbonate composite sheet is pressed by hot pressing and cold pressing Melting and bonding to the lower surface of the honeycomb core layer, the hot pressing temperature is 240°C, the hot pressing pressure is 4MPa, the hot pressing time is 50s, the cold pressing temperature is 60°C, the cold pressing pressure is 4MPa, and the cold pressing time is 5min;

(2) Place the laminated plate on the lower surface in the phase change material filling machine, and fill the phase change energy storage material into several independent chambers in the honeycomb core layer through the filling machine;

(3) Lay the prepared continuous fiber-reinforced thermoplastic polycarbonate composite material sheet on the upper surface of the filled honeycomb core layer, and send it into the steel belt press. The upper steel belt is heated, and the lower steel belt is not heated. The rotating motion of the steel belt press drags the continuous fiber reinforced thermoplastic polycarbonate composite sheet and the honeycomb core layer through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber reinforced thermoplastic polycarbonate is formed by hot pressing and cold pressing. The ester composite material sheet is melt-bonded to the upper surface of the filled honeycomb core layer, the hot-pressing temperature is 240°C, the hot-pressing pressure is 4MPa, the hot-pressing time is 50s, the cold-pressing temperature is 60°C, and the cold-pressing pressure is 4MPa. The time is 5 minutes.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of the claims of the present invention.

Claims (9)

1. A continuous fiber-reinforced thermoplastic polymer temperature-regulating panel, including a panel (1), a bottom plate (2), a honeycomb core layer (3) and a phase-change energy storage material (4) filled in the honeycomb core layer, its characteristics In that, the panel (1), bottom plate (2) and honeycomb core layer (3) are made of continuous fiber reinforced thermoplastic polymer composite material, and the continuous fiber reinforced thermoplastic polymer composite material includes continuous fiber, thermoplastic resin and modified thermally conductive filler, based on the total weight of thermoplastic resin and modified thermally conductive filler as 100 parts, the amount of modified thermally conductive filler added is 10-20 parts, and the honeycomb core layer phase change energy storage material (4) is filled in the honeycomb core layer ( 3) In a number of mutually independent chambers, the face plate (1) and the bottom plate (2) are respectively combined with the upper and lower surfaces of the honeycomb core layer by thermal melting. 2. The continuous fiber reinforced thermoplastic polymer temperature regulating plate according to claim 1, characterized in that: the continuous fiber is selected from one of glass fiber, carbon fiber and aramid fiber, and the thermoplastic resin is selected from polyethylene, polypropylene, polycarbonate One of ester and nylon, and the modified thermal conductive filler is selected from one or more of graphite, calcium carbonate, aluminum oxide, aluminum nitride, silicon nitride, and metal powder. 3. The continuous fiber-reinforced thermoplastic polymer temperature regulating plate according to claim 1, characterized in that: the sheet of the continuous fiber-reinforced thermoplastic polymer composite material is made of thermoplastic resin and modified thermally conductive filler through an extruder. After mixing and plasticizing, it is prepared by double-sided coating with continuous fibers, and the thickness of the sheet is 0.2-1.0mm. 4. The continuous fiber-reinforced thermoplastic polymer temperature-regulating panel according to any one of claims 1-3, characterized in that: the honeycomb core layer is made of continuous fiber-reinforced thermoplastic polymer composite material sheet through molding bonding or rolling It is prepared by pressure fusion molding, and the thickness of the honeycomb core layer is 5-20mm. 5. The continuous fiber reinforced thermoplastic polymer temperature regulating plate according to claim 1, characterized in that: the phase change energy storage material filled in the honeycomb core layer is a phase change energy storage material, and the phase change point is 20~ 23°C. 6. The continuous fiber reinforced thermoplastic polymer temperature regulating plate according to claim 5, characterized in that: the phase change energy storage material filled in the honeycomb core layer is a composite phase change energy storage material with a phase change point of 20 ~23°C. 7. The method for preparing the continuous fiber-reinforced thermoplastic polymer tempering plate according to any one of claims 1-6, characterized in that it comprises the following steps: (1) Lay the continuous fiber-reinforced thermoplastic polymer composite sheet on the lower surface of the honeycomb core layer and send it into the steel belt press. The upper steel belt is not heated, and the lower steel belt is heated. The continuous fiber-reinforced thermoplastic polymer composite sheet and the honeycomb core layer pass through the heating zone and the cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polymer composite sheet is melt-bonded to the honeycomb core by hot pressing and cold pressing the lower surface of the layer; (2) Place the laminated plate on the lower surface in the phase change material filling machine, and fill the phase change energy storage material into several independent chambers in the honeycomb core layer through the filling machine; (3) Lay the continuous fiber-reinforced thermoplastic polymer composite material sheet on the upper surface of the filled honeycomb core layer, and send it into the steel belt press. The upper steel belt is heated, the lower steel belt is not heated, and the steel belt is pressed. The rotary motion of the machine drags the continuous fiber-reinforced thermoplastic polymer composite sheet and the honeycomb core layer through the heating zone and cooling zone of the steel belt press synchronously, and the continuous fiber-reinforced thermoplastic polymer composite sheet is pressed by hot pressing and cold pressing Fusion bonding to the upper surface of the filled honeycomb core; (4) Obtain a continuous fiber reinforced thermoplastic polymer temperature control panel. 8. The method according to claim 7, characterized in that: in step (1), the hot pressing temperature is 210-260°C, the hot pressing pressure is 2-4MPa, the hot pressing time is 20-50s, and the cold pressing temperature is 60- 80℃, cold pressing pressure 2-4MPa, cold pressing time 5-10min. 9. The method according to claim 7, characterized in that: in step (3), the hot-pressing temperature is 210-260°C, the hot-pressing pressure is 2-4MPa, the hot-pressing time is 20-50s, and the cold-pressing temperature is 40- 60℃, cold pressing pressure 2-4MPa, cold pressing time 5-10min.