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Method for preparing flame retardant rail transit vehicle interior floor based on foaming process

A rail transit vehicle and process technology, applied to vehicle parts, railway car bodies, railway car body parts, etc., can solve problems such as difficult to achieve 100% recycling, harmful volatile substances to the body, unfavorable workers' health and environmental protection , to achieve the effect of light weight, less glue spraying process and good impact resistance

Inactive Publication Date: 2018-12-07
嘉兴领科材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Method for preparing flame retardant rail transit vehicle interior floor based on foaming process
  • Method for preparing flame retardant rail transit vehicle interior floor based on foaming process

Examples

Experimental program
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Effect test

Embodiment 1

[0020] like figure 1 As shown, a flame-retardant rail transit vehicle interior floor made based on a foaming process includes an upper surface layer 2, a core material 1, and a lower surface layer 3 arranged in sequence; the upper surface layer 2, the core material 1, and the lower surface layer 3 are heated and pressurized Composite flooring; the core material 1 is a foam sheet; the upper surface layer 2 and the lower surface layer 3 are made of multi-layer unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheet and / or glass fiber fabric reinforced thermoplastic resin prepreg Dip sheet and / or glass fiber and thermoplastic resin co-extruded fiber woven composite; core material 1 is a foamed sheet made of thermoplastic polymer resin through physical or chemical foaming process; rail transit of the present invention Vehicle flooring, the upper surface and the lower surface are made of multi-layer unidirectional continuous glass fiber reinforced thermop...

Embodiment 2

[0031] A rail transit vehicle floor, comprising an upper surface layer 2, a core material 1 and a lower surface layer 3 arranged in sequence; the upper surface layer 2 and the lower surface layer 3 are made of 4 layers of unidirectional continuous fiber reinforced polypropylene resin prepreg sheets according to [0° / 45° / 135° / 90°] laminated by hot pressing, the content of glass fiber in the unidirectional continuous fiber reinforced polypropylene resin prepreg is 70wt%, the thickness is 0.25mm, and the density is 1650kg / m 3 . The flame retardant formula of polypropylene resin here is the same as that of Example 1; the core material adopts foamed polypropylene material as the base material, blends and adds the above flame retardant formula, and adopts supercritical CO 2 The advanced sheet extrusion process produces expanded polypropylene sheets with a thickness of 18mm and a controlled cell size of 80um. The composite surface layer of the core material and the upper and lower...

Embodiment approach 3

[0033] A rail transit vehicle floor, comprising an upper surface layer 2, a core material 1, and a lower surface layer 3 arranged in sequence; the upper surface layer 2 and the lower surface layer 3 are made of glass fiber fabric reinforced thermoplastic resin prepreg sheet heat-pressed composite, the glass The fiber fabric reinforced thermoplastic resin prepreg has a glass fiber content of 60wt%, a thickness of 1mm, and a density of 1500kg / m 3 . Its flame-retardant polypropylene formula is the same as that of Example 1; the core material is the flame-retardant polypropylene in Example 1, mixed with chemical foam masterbatch, and produced by a steel rod calendering process to produce foamed polypropylene sheets. The surface material and the foamed polypropylene sheet are laminated together by an off-line hot pressing process. The passenger car floor performance of this embodiment is shown in Table 1.

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Abstract

The invention relates to a method for preparing a flame retardant rail transit vehicle interior floor based on a foaming process. The interior floor comprises an upper surface layer, a core material and a lower surface layer arranged in sequence. The upper surface layer, the core material and the lower surface layer are compounded through heating and pressing to form the interior floor. The core material is a foam sheet. The upper surface layer and the lower surface layer are prepared from fabrics obtained by weaving multilayer unidirectional continuous glass fiber reinforced thermoplastic resin prepregs and / or glass fiber fabric-reinforced thermoplastic resin prepregs and / or glass fibers and thermoplastic resin co-extruded fibers. The polymer resin foams to form a lightweight foamed sheetas the core material through a physical or chemical foaming process. The lightweight composite core material has light weight and can absorb noise. The surface layers and the core layer are preparedfrom the same polymer. The base layer materials can be bonded through a direct practical hot pressing process and the base layer materials can be bonded with the surface layers directly through a hotpressing process without glue so that the glue spraying process is avoided. The floor materials can be recovered, is environmentally friendly and is easy to process.

Description

technical field [0001] The invention relates to the technical field of plate materials, in particular to a foaming process-based production of flame-retardant rail transit vehicle interior flooring. Background technique [0002] With the rapid development of rail transit, people are paying more and more attention to the lightweight and ride comfort of rail vehicles, and the lightweight and recyclable rail transit materials have attracted more and more attention from OEMs and end customers. The floor occupies a large proportion in the vehicle interior, and its typical floor structure consists of three parts: floor cloth, sandwich panel and sound insulation pad from top to bottom. The present invention is mainly aimed at the so-called sandwich sandwich panel, whose material ranges from plywood to aluminum honeycomb to rigid foam material and composite material. Aluminum honeycomb and its extended sandwich material, although the weight per unit area of ​​this floor is low, the...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/04B32B27/08B32B27/20B32B33/00B32B37/06B61D17/10
CPCB32B5/20B32B5/024B32B27/08B32B27/20B32B33/00B32B37/06B32B2038/0084B32B2260/021B32B2260/046B32B2262/0253B32B2307/102B32B2307/3065B32B2307/558B32B2307/718B32B2605/10B61D17/10
Inventor 孙亚峰王春敏王永荣胡延东
Owner 嘉兴领科材料技术有限公司
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