A production method of a phase change temperature-regulating ceiling

Abstract

The present invention provides a phase change temperature-regulating ceiling and a production method thereof, belonging to the technical field of automobile manufacturing. It solves the problem that the ceilings of existing vehicle models do not have the function of temperature regulation. It includes a PU substrate layer, a fabric layer and a phase change temperature-regulating layer, and the phase change temperature-regulating layer, the fabric layer and the PU substrate layer are sequentially connected and arranged from the outside to the inside of the ceiling. It is mainly used for the manufacture of automobile ceilings.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile manufacturing, and particularly relates to a production method of a phase change temperature-regulating roof panel. Background Art

[0002] With the rapid development of new energy vehicles, how to efficiently utilize new energy and achieve the purpose of energy conservation and environmental protection has become a direction of in-depth research in this field. In hot summers or cold winters, with a large temperature difference between day and night, people often use air conditioners to adjust the temperature inside the cab to keep it in a comfortable state. As the interior trim part that covers the largest area of the cab roof, the roof panels of existing vehicle models only have the functions of decorating the appearance, protecting passengers, and sound absorption and insulation, and do not have the function of temperature regulation. This results in the rapid loss of cold air inside the cab in summer or hot air inside the cab in winter to the outside of the cab, and people need to continuously turn on the air conditioner to maintain the stability of the temperature inside the cab, greatly increasing energy consumption. Summary of the Invention

[0003] In view of this, the present invention aims to provide a production method of a phase change temperature-regulating roof panel to solve the problem that the roof panels of existing vehicle models do not have the function of temperature regulation.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A phase change temperature-regulating roof panel includes a PU base material layer, a fabric layer, and a phase change temperature-regulating layer. The phase change temperature-regulating layer, the fabric layer, and the PU base material layer are sequentially connected and arranged from the outside to the inside of the roof panel.

[0005] Furthermore, the PU base material layer includes a PU foam sheet layer, an inner molding adhesive layer, an inner glass fiber mat layer, an inner non-woven fabric layer, an outer molding adhesive layer, an outer glass fiber mat layer, and an outer non-woven fabric layer. The outer non-woven fabric layer, the outer glass fiber mat layer, the outer molding adhesive layer, the PU foam sheet layer, the inner molding adhesive layer, the inner glass fiber mat layer, and the inner non-woven fabric layer are sequentially connected and arranged from the outside to the inside.

[0006] Furthermore, both the inner molding adhesive layer and the outer molding adhesive layer are polyurethane molding adhesives, both the inner non-woven fabric layer and the outer non-woven fabric layer are spunlace PET non-woven fabrics, and both the inner glass fiber mat layer and the outer glass fiber mat layer are chopped mats.

[0007] Furthermore, the fabric layer is composed of a fabric and PUR, and the fabric is a woven fabric or a suede-like fabric.

[0008] Furthermore, the fabric layer and the PU base material layer are connected by an aqueous adhesive.

[0009] Furthermore, the material of the phase change temperature-regulating layer is a phase change microcapsule conversion liquid.

[0010] The present invention also provides a production method of a phase change temperature-regulating roof panel, which includes the following steps:

[0011] Step 1: Forming of the PU base material layer. The inner non-woven fabric layer, inner fiberglass mat layer, inner forming adhesive layer, PU foam sheet layer, outer forming adhesive layer, outer fiberglass mat layer, and outer non-woven fabric layer are sequentially placed in a forming mold from the inside to the outside according to the laying process, and are formed by a compression molding process.

[0012] Step 2: Forming of the fabric layer. The fabric and PUR are compounded and formed by a flame lamination process.

[0013] Step 3: The formed fabric layer is adhesively formed with the PU base material layer through a compression molding process using an aqueous adhesive.

[0014] Step 4: Forming of the phase change temperature regulating layer. The phase change microcapsule conversion liquid is dip-coated on the surface of the fabric layer and then dried to form the phase change temperature regulating layer, and the forming of the phase change temperature regulating ceiling is completed.

[0015] Furthermore, in the compression molding process in Step 1, the temperature of the mold is 120°C to 140°C, and the pressure holding time is 30s to 40s.

[0016] Furthermore, in the compression molding process in Step 3, the temperature of the mold is 90°C to 110°C, and the pressure holding time is 30s to 40s.

[0017] Furthermore, in Step 4, when dip-coating the phase change microcapsule conversion liquid, the phase change microcapsule finishing liquid is introduced into the coating rubber roller of the coating equipment, and then evenly dip-coated on the surface of the fabric layer. The dip-coating amount is 40 g / m 2 ~50 g / m 2 , and the drying temperature is 150°C to 170°C.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention is provided with a phase change temperature regulating layer on the outermost side of the ceiling, which is in direct contact with the cab interior environment. When the temperature in the cab rises, the phase change temperature regulating layer can absorb heat, and when the temperature in the cab drops, the phase change temperature regulating layer can release heat, thereby maintaining the relative stability of the temperature in the cab and improving the comfort in the cab.

[0020] 2. The present invention adjusts the temperature in the cab through the self-heat absorption and self-heat release processes of the ceiling phase change temperature regulating layer, greatly reducing the temperature fluctuation in the cab, and does not require continuous air conditioning to maintain the temperature stability in the cab, thus saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 This is the overall structural schematic diagram of a phase change temperature regulating ceiling according to the present invention.

[0023] 1 - Phase change temperature regulating layer, 2 - Fabric layer, 3 - Water - based glue, 4 - Outer non - woven fabric layer, 5 - Outer fiberglass mat layer, 6 - Outer forming glue layer, 7 - PU foam sheet layer, 8 - Inner forming glue layer, 9 - Inner fiberglass mat layer, 10 - Inner non - woven fabric layer. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See Figure 1 This embodiment will be described. It includes a PU substrate layer, a fabric layer 2, and a phase change temperature regulating layer 1. The phase change temperature regulating layer 1, the fabric layer 2, and the PU substrate layer are sequentially connected and arranged from the outside to the inside of the ceiling. In this embodiment, the phase change temperature regulating layer 1 is located on the outermost side of the ceiling and is in direct contact with the cab interior environment. When the temperature in the cab rises, the phase change temperature regulating layer 1 can absorb heat. When the temperature in the cab drops, the phase change temperature regulating layer 1 can release heat, thereby maintaining the relative stability of the temperature in the cab and improving the comfort in the cab.

[0026] In this embodiment, the PU substrate layer includes a PU foam sheet layer 7, an inner forming glue layer 8, an inner fiberglass mat layer 9, an inner non - woven fabric layer 10, an outer forming glue layer 6, an outer fiberglass mat layer 5, and an outer non - woven fabric layer 4. The outer non - woven fabric layer 4, the outer fiberglass mat layer 5, the outer forming glue layer 6, the PU foam sheet layer 7, the inner forming glue layer 8, the inner fiberglass mat layer 9, and the inner non - woven fabric layer 10 are sequentially connected and arranged from the outside to the inside. The PU foam sheet layer 7 is a semi - rigid layer with a density of 19 kg / m 3 ~27 kg / m 3 and a thickness of 6 - 8 mm.

[0027] In this embodiment, both the inner forming glue layer 8 and the outer forming glue layer 6 are polyurethane forming glue. Both the inner non - woven fabric layer 10 and the outer non - woven fabric layer 4 are spunlace PET non - woven fabrics. Both the inner fiberglass mat layer 9 and the outer fiberglass mat layer 5 are chopped mats. In this embodiment, the gram weight of the polyurethane forming glue is 120 g / m 2 ~140 g / m 2 , the gram weight of the spunlace PET non - woven fabric is 40 g / m 2 ~50 g / m 2 , and the gram weight of the chopped mat is 140 g / m 2 ~160 g / m2 。

[0028] In this embodiment, the fabric layer 2 is composed of a fabric and PUR. The fabric is a woven fabric or a suede-like fabric. In this implementation, the woven fabric is a polyester woven fabric, and the gram weight of a single-layer polyester woven fabric is 140 g / m 2 ~160 g / m 2 , and the gram weight of a single-layer suede-like fabric is 240 g / m 2 ~280 g / m 2 , the density of PUR is 50 kg / m 3 ~60 kg / m 3 , and the gram weight of the fabric layer after compounding is 300 g / m 2 ~360 g / m 2 , and the gram weight of the suede-like fabric layer after compounding is 335 g / m 2 ~425 g / m 2 。

[0029] In this embodiment, the fabric layer 2 is connected to the PU substrate layer through the water-based glue 3.

[0030] In this embodiment, the material of the phase change temperature regulation layer 1 is a phase change microcapsule conversion liquid. After the phase change microcapsule conversion liquid is dip-coated on the surface of the fabric layer 2 and dried, the phase change temperature regulation layer 1 is formed.

[0031] This embodiment also provides a production method of a phase change temperature regulation ceiling, which includes the following steps:

[0032] Step 1: Forming the PU substrate layer. The inner non-woven fabric layer 10, the inner fiberglass felt layer 9, the inner forming glue layer 8, the PU foam sheet layer 7, the outer forming glue layer 6, the outer fiberglass felt layer 5, and the outer non-woven fabric layer 4 are sequentially placed in a forming mold according to the laying process from the inside to the outside, and are formed by a mold pressing forming process;

[0033] Step 2: Forming the fabric layer 2. The fabric and PUR are compounded and formed by a flame composite process;

[0034] Step 3: The formed fabric layer 2 is adhesively formed with the PU substrate layer through the water-based glue 3 by a mold pressing forming process;

[0035] Step 4: Forming the phase change temperature regulation layer 1. The phase change microcapsule conversion liquid is dip-coated on the surface of the fabric layer 2 and dried to form the phase change temperature regulation layer 1, and the forming of the phase change temperature regulation ceiling is completed.

[0036] In this embodiment, in step 3, the fabric layer 2 can also be adhesively formed with the PU substrate layer through the water-based glue 3 by a wrapping process. If it is a wrapping process, a tooling is used to assist in manual wrapping.

[0037] The layup process, compression molding process, coating process, and flame lamination process described in the above steps are all existing processes, so they will not be elaborated here.

[0038] In the compression molding process of step 1 in this embodiment, the temperature of the mold is 120°C to 140°C, and the pressure holding time is 30s to 40s.

[0039] In the compression molding process of step 3 in this embodiment, the temperature of the mold is 90°C to 110°C, and the pressure holding time is 30s to 40s.

[0040] In step 4 of this embodiment, when dip-coating the phase change microcapsule conversion liquid, the phase change microcapsule finishing liquid is introduced into the coating rubber roller of the coating equipment, and then evenly dip-coated on the surface of the fabric layer 2. The dip-coating amount is 40 g / m 2 ~50 g / m 2 , and the drying temperature is 150°C to 170°C.

[0041] In this embodiment, the phase change temperature regulation layer 1 can undergo a phase change, absorb heat from the environment or release heat to the environment, so as to achieve the purpose of storing and releasing heat. It has the advantages of high energy storage density, small volume, stable phase change temperature, and obvious energy saving. The phase change temperature regulation layer 1 is in direct contact with the cab interior environment. When the temperature in the cab rises, the phase change temperature regulation layer 1 can absorb heat. When the temperature in the cab drops, the phase change temperature regulation layer can release heat to maintain the relative stability of the temperature in the cab.

[0042] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention.

Claims

1. A production method of a phase change temperature-regulating ceiling, characterized in that: The phase change temperature regulating ceiling includes a PU base material layer, a fabric layer (2) and a phase change temperature regulating layer (1), and the phase change temperature regulating layer (1), the fabric layer (2) and the PU base material layer are sequentially connected and arranged from the outside to the inside of the ceiling; The production method of the phase change temperature regulating ceiling includes the following steps: Step 1: Molding of the PU base material layer. The inner non-woven fabric layer (10), the inner fiberglass felt layer (9), the inner molding adhesive layer (8), the PU foam sheet layer (7), the outer molding adhesive layer (6), the outer fiberglass felt layer (5) and the outer non-woven fabric layer (4) are sequentially placed in a molding die according to the laying process from the inside to the outside, and are molded by a compression molding process; Step 2: Molding of the fabric layer (2). The fabric and PUR are compounded and molded by a flame lamination process; Step 3: The molded fabric layer (2) is adhesively formed with the PU base material layer by an aqueous adhesive (3) through a compression molding process; Step 4: Molding of the phase change temperature regulating layer (1). The phase change microcapsule conversion liquid is dip-coated on the surface of the fabric layer (2) and then dried to form the phase change temperature regulating layer (1), and the molding of the phase change temperature regulating ceiling is completed.

2. The production method of the phase change temperature-regulating ceiling according to claim 1, characterized in that: Both the inner molding adhesive layer (8) and the outer molding adhesive layer (6) are polyurethane molding adhesives. Both the inner non-woven fabric layer (10) and the outer non-woven fabric layer (4) are spunlace PET non-woven fabrics. Both the inner fiberglass felt layer (9) and the outer fiberglass felt layer (5) are chopped felts.

3. The production method of the phase change temperature-regulating ceiling according to claim 1, characterized in that: The fabric layer (2) is composed of a fabric and PUR. The fabric is a fabric fabric or a suede-like fabric.

4. The production method of the phase change temperature-regulating ceiling according to claim 1, characterized in that: In the compression molding process in Step 1, the temperature of the die is 120°C to 140°C, and the holding pressure time is 30s to 40s.

5. The production method of the phase change temperature-regulating ceiling according to claim 1, characterized in that: In the compression molding process in Step 3, the temperature of the die is 90°C to 110°C, and the holding pressure time is 30s to 40s.

6. The production method of the phase change temperature regulating ceiling according to claim 1, characterized in that: In the step 4, the phase change microcapsule conversion liquid is introduced into the coating rubber roller of the coating equipment and then evenly dip-coated on the surface of the fabric layer (2), and the dipping amount is 40 g / m 2 ~50 g / m 2 , and the drying temperature is 150°C to 170°C.

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