CN205705585U - A kind of bus deck - Google Patents

Abstract

The utility model discloses a passenger car floor, which comprises a core material and a composite surface layer compounded on the upper and lower surfaces of the core material. The composite surface layer is made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheet and/or glass fiber fabric. Reinforced thermoplastic resin prepreg is compounded. The core material is a thermoplastic lightweight composite material sheet with polypropylene, polyamide or thermoplastic polyester as the matrix and glass fiber mat as the reinforcement. The density of the core material is 200kg/m ³ -600kg/m ³ . The composite surface layer of the utility model is made of multi-layer unidirectional continuous glass fiber and/or glass fiber fabric reinforced thermoplastic resin prepreg sheets layer by layer, so that the fibers form a staggered grid, which ensures that the product has excellent performance in the longitudinal and transverse directions. High strength, better impact resistance and durability; thermoplastic lightweight composite material sheet is used as the core material, which is not only light in weight, can absorb noise, but also can be directly combined with the surface layer by hot pressing process without using adhesive , reducing the glue spraying process, green and environmental protection.

Description

A passenger car floor

technical field

The utility model relates to the technical field of automobile interior decoration, in particular to a passenger car floor.

Background technique

With the rapid development of passenger transport, people pay more and more attention to the lightweight of passenger cars, and the seats and floors account for the largest proportion in the interior of passenger cars. It is thicker and heavier, which cannot meet the needs of lightweight passenger cars.

In order to meet the lightweight of passenger cars, various lightweight floors have emerged in recent years, such as the use of PVC or aluminum honeycomb sandwich structures. Although this kind of structure has a significant effect in weight reduction, the performance of PVC material decreases at low temperature, and there is a risk of brittle fracture; the aluminum honeycomb sandwich structure has major problems in the installation process, and special treatment is required for the screw installation part. In order to ensure sufficient nailing force, the installation process is complicated, which increases the labor intensity and working hours of the assembly workers, and it is difficult to realize the application of large quantities.

CN 201520224051.2 discloses a passenger car floor with a sandwich structure. The passenger car floor is a sandwich structure in which a core material is arranged between two layers of glass fiber fabric reinforced resin-based composite materials, so that the passenger car floor has sufficient mechanical properties and ensures The compressive performance and lightweight of the passenger car floor are improved. However, the core material is polyurethane foam, which needs to be bonded to the surface layer through an adhesive. This process will produce volatile substances harmful to the body, which is not conducive to the health of workers and environmental protection, and the recycling of polyurethane foam requires special equipment and Solvent treatment, it is difficult to achieve 100% recovery.

Utility model content

In order to solve the above-mentioned problems existing in the existing passenger car floor, the purpose of the utility model is to provide a passenger car floor with good compression resistance, light weight, environmental protection and easy recycling.

The utility model is realized through the following technical solutions:

A passenger car floor, comprising a core material and a composite surface layer on the upper and lower surfaces of the core material, the composite surface layer is made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheet and/or glass fiber fabric reinforced thermoplastic resin It is composed of prepreg sheets. The core material is a thermoplastic lightweight composite material board with polypropylene, polyamide or thermoplastic polyester as the matrix and glass fiber mat as the reinforcement. The density of the core material is 200kg/m ³ -600kg/m ³ .

Wherein, based on the total weight of the thermoplastic lightweight composite sheet, the glass fiber content is 40wt%-80wt%.

The thickness of the core material is 4-15mm.

In order to improve the strength, impact resistance and durability of the passenger car floor, the composite surface layer of the utility model is made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg and/or glass fiber fabric reinforced thermoplastic resin prepreg, using specific The advanced layering method is layered layer by layer, so that the fibers form a staggered grid, which ensures that the product has high performance in the vertical and horizontal directions, and has better strength, impact resistance and durability.

Preferably, the composite surface layer is made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg and/or glass fiber fabric reinforced thermoplastic resin prepreg according to [90°/0°], [0°/90° ], [90°/0°/90°], [0°/90°/0°], [90°/0°/0°/90°], [0°/90°/90°/0° ], [90°/+45°/-45°/0°], [0°/-45°/+45°/90°] or [0°/±45°/90°/±45°/0 °] laminated by hot pressing composite.

Wherein, the unidirectional continuous glass fiber reinforced thermoplastic resin prepreg is a sheet-like structural material with polypropylene, polyamide or thermoplastic polyester as the matrix and continuous glass fiber as the reinforcement, wherein, based on the unidirectional continuous glass fiber To reinforce the total weight of the thermoplastic resin prepreg, the glass fiber content is 40wt%-70wt%.

Wherein, the glass fiber fabric reinforced thermoplastic resin prepreg sheet is a sheet structure material with polypropylene, polyamide or thermoplastic polyester as the matrix and glass fiber plain weave or twill weave as reinforcement, wherein, based on glass fiber fabric reinforcement The total weight of the thermoplastic resin prepreg, the glass fiber content is 40wt%-70wt%.

The composite surface layer has a thickness of 0.5-2 mm and a density of 1500-2000 kg/m ³ .

The thickness of the passenger car floor is 6-20mm, and the density is 400-800kg/m ³ .

Compared with the prior art, the utility model has the following beneficial effects:

In the bus floor of the utility model, the composite surface layer is made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheets and/or glass fiber fabric reinforced thermoplastic resin prepreg sheets layer by layer, so that the fibers form a staggered grid shape, It ensures that the product has high performance in the longitudinal and transverse directions, and has better strength, impact resistance and durability; thermoplastic lightweight composite material sheet is used as the core material. This lightweight composite material core material is not only light in weight, but also absorbs noise. , and can be directly combined with the surface layer through the hot pressing process without using adhesives, which reduces the glue spraying process and is environmentally friendly.

Description of drawings

Fig. 1 is the structural representation of passenger car floor of the present utility model;

Among them, 1. Composite surface layer; 2. Core material.

detailed description

The following examples will further illustrate the present utility model through specific implementation methods. The following examples are preferred implementation forms of the present utility model, but the implementation forms of the present utility model are not limited by the following examples.

Example 1:

As shown in FIG. 1 , a passenger car floor includes a core material 2 and a composite surface layer 1 compounded on the upper and lower surfaces of the core material 2 . The composite surface layer 1 is composed of three layers of unidirectional continuous fiber-reinforced polypropylene resin prepreg sheets according to the lamination method of [0°/90°/0°] and hot-compressed, and the unidirectional continuous fiber-reinforced polypropylene resin The content of glass fiber in the acrylic resin prepreg sheet is 60wt%, the thickness of the composite surface layer 1 is 1mm, and the density is 1500kg/m ³ . The core material 2 is a thermoplastic lightweight composite material board with polypropylene as the matrix and glass fiber felt as the reinforcement. The thermoplastic lightweight composite material board is a felt produced by blending glass fiber and polypropylene fiber. Formed after hot pressing, the content of glass fiber in the thermoplastic lightweight composite material plate is 45wt%; the thickness of the core material is 6mm, and the density is 450kg/m ³ . The core material 2 and the composite surface layer 1 on the upper and lower surfaces are formed into a passenger car floor by a hot press molding process. The thickness of the passenger car floor is 8 mm. The performance of the passenger car floor in this embodiment is shown in Table 1.

Example 2:

As shown in FIG. 1 , a passenger car floor includes a core material 2 and a composite surface layer 1 compounded on the upper and lower surfaces of the core material 2 . The composite surface layer 1 is composed of two layers of unidirectional continuous fiber-reinforced polyamide resin prepreg sheets according to the lamination method of [0°/90°], and the unidirectional continuous fiber-reinforced polyamide resin prepreg The content of glass fiber in the dip sheet is 50wt%, the thickness of the composite surface layer 1 is 0.6mm, and the density is 1600kg/m ³ . The core material 2 is a thermoplastic lightweight composite material board with polyamide as the matrix and glass fiber felt as the reinforcement. The thermoplastic lightweight composite material board is a felt made of glass fiber and polyamide fiber through a blending process. Formed after hot pressing, the content of glass fiber in the thermoplastic lightweight composite material plate is 50wt%; the thickness of the core material is 7.8mm, and the density is 500kg/m ³ . The core material 2 and the composite surface layer 1 on the upper and lower surfaces are formed into a passenger car floor by a hot press molding process. The thickness of the passenger car floor is 9mm. The performance of the passenger car floor in this embodiment is shown in Table 1.

Example 3:

As shown in FIG. 1 , a passenger car floor includes a core material 2 and a composite surface layer 1 compounded on the upper and lower surfaces of the core material 2 . The composite surface layer 1 is composed of 4 layers of unidirectional continuous fiber-reinforced thermoplastic polyester resin prepreg sheets according to the lamination method of [90°/+45°/-45°/0°]. The content of glass fiber in the unidirectional continuous fiber reinforced thermoplastic polyester prepreg sheet is 70wt%, the thickness of the composite surface layer 1 is 1.2mm, and the density is 1700kg/m ³ . The core material 2 is a thermoplastic lightweight composite material board with thermoplastic polyester as the matrix and glass fiber mat as the reinforcement. The thermoplastic lightweight composite material board is processed by glass fiber and thermoplastic polyester fiber through a blending process. The felt is formed by hot pressing, and the content of glass fiber in the thermoplastic lightweight composite material sheet is 60wt%; the thickness of the core material is 4.6mm, and the density is 550kg/m ³ . The core material 2 and the composite surface layer 1 on the upper and lower surfaces are formed into a passenger car floor by a hot press molding process. The thickness of the passenger car floor is 7mm. The performance of the passenger car floor in this embodiment is shown in Table 1.

Comparative example 1:

A passenger car floor, comprising a core material 2 and a composite surface layer 1 compounded on the upper and lower surfaces of the core material 2 . The composite surface layer 1 is composed of three layers of unidirectional continuous fiber-reinforced polypropylene resin prepreg sheets according to the lamination method of [0°/90°/0°] and hot-compressed, and the unidirectional continuous fiber-reinforced polypropylene resin The content of glass fiber in the acrylic resin prepreg sheet is 60wt%, the thickness of the composite surface layer 1 is 1mm, and the density is 1500kg/m ³ . The core material 2 is prepared by using the glass fiber direct yarn as a reinforcement, and the rigid polyurethane foam formed by foaming polyurethane resin as a matrix by molding or rolling die or pultrusion; the thickness of the core material is 6mm, the density is 450kg/m ³ , and the content of glass fiber direct yarn in the core material 2 is 45wt%. The core material 2 and the composite surface layer 1 on the upper and lower surfaces are bonded by an adhesive to form a passenger car floor. The thickness of the passenger car floor is 8mm. The performance of the passenger car floor in this embodiment is shown in Table 1.

The performance result data of table 1 embodiment and comparative example Test items standard test Example 1 Example 2 Example 3 Comparative example 1 Longitudinal bending strength (MPa) GB/T17657-1999 87 52 90 50 Longitudinal flexural modulus (GPa) GB/T17657-1999 7.5 5.1 8.3 4.5 Transverse bending strength (MPa) GB/T17657-1999 73 48 77 40 Transverse flexural modulus (GPa) GB/T17657-1999 5.8 4.9 6.2 4 Density (kg/m ³ ) GB/T17657-1999 675 600 690 700

From the comparison of the results of Example 1 and Comparative Example 1, it can be seen that the utility model adopts the thermoplastic light composite material plate formed by hot pressing the felt produced by the blending process of glass fiber and polymer fiber instead of polyurethane foam as the core material, and prepares The obtained passenger car floor not only has better strength, impact resistance and durability, but also can be directly combined with the surface layer through a hot pressing process without using adhesives, which reduces the glue spraying process and is environmentally friendly.

Claims (7)

1. a bus deck, including core and be compounded in core upper and lower surface recombination surface layer, it is characterised in that described compound Surface layer is to be strengthened thermoplastic resin preliminary-dip piece and/or glass fiber cloth enhancing thermoplastic resin by the unidirectional continuous glass fibre of multilamellar Fat preliminary-dip piece is composited, and described core is with polypropylene, polyamide or thermoplastic polyester as matrix, with glass mat for increasing The thermoplasticity light compound material board material of strong body, the density of described core is 200kg/m³-600kg/m³。

Bus deck the most according to claim 1, it is characterised in that: the thickness of described core is 4-15mm.

Bus deck the most according to claim 1, it is characterised in that: described unidirectional continuous glass fibre strengthens thermoplastic resin Fat preliminary-dip piece is the laminated structure with polypropylene, polyamide or thermoplastic polyester as matrix, with continuous glass fibre as reinforcement Material.

Bus deck the most according to claim 1, it is characterised in that: it is pre-that described glass fiber cloth strengthens thermoplastic resin Leaching sheet is with polypropylene, polyamide or thermoplastic polyester as matrix, the sheet as reinforcement with glass fibre plain weave or twills Shape structural material.

Bus deck the most according to claim 1, it is characterised in that: described composite cover is by the unidirectional continuous glass of multilamellar Fiber-reinforced thermoplastic resin preliminary-dip piece and/or glass fiber cloth strengthen thermoplastic resin preliminary-dip piece by [90 °/0 °], [0 °/ 90°]、 [90°/0°/90°]、[0°/90°/0°]、[90°/0°/0°/90°] [0°/90°/90°/0°]、[90°/+45°/- 45 °/0 °], [0 °/-45 ° /+45 °/90 °] or [0 °/± 45 °/90 °/± 45 °/0 °] ply sequence hot pressing is composited.

Bus deck the most according to claim 1, it is characterised in that: the thickness of described composite cover is 0.5-2mm, density For 1500-2000kg/m³。

Bus deck the most according to claim 1, it is characterised in that: the thickness of described bus deck is 6-20mm, density It is 400～800kg/m³。