Flame-retardant film board and its preparation method

Abstract

The invention provides a flame-retardation film plate and a preparation method thereof. The film plate comprises two or more overlaid films. Each one of the films is provided with multiple pits and raised parts distributed at intervals along a length direction. Extension directions of the pits and raised parts of two adjacent films are perpendicular. The films are flame-retardation polyester films. The preparation method comprises rolling flame-retardation polyester films through a roller so that multiple pits and raised parts distributed at intervals are formed on the film, adsorbing the films on the surface of a mold with the corresponding shape, carrying out cooling and setting, connecting two or more the set flame-retardation polyester films, wherein the extension directions of the pits and raised parts of two adjacent films are perpendicular, and carrying out finishing and cutting to obtain the flame-retardation film plate. The flame-retardation film plate has good toughness, flame resistance, heat insulating ability and sound-absorbing properties, greatly improves adaptability of a draining plate for a motor car and has a good application prospect.

Description

technical field [0001] The invention relates to the field of materials, in particular to a flame-retardant film, and more particularly to a flame-retardant film board suitable for motor car drain boards. Background technique [0002] In recent years, with the rapid development of high-speed EMU technology, high-speed EMU has become the main choice for people to travel, so passengers have put forward higher requirements for travel comfort and other ride experience. Secondly, for the consideration of energy saving and environmental protection, higher standards are put forward for the comprehensive performance of the EMU, especially, the practical requirements for the drain board in the EMU are getting higher and higher. The drain board used on the existing bullet trains is imported from abroad, so the price is expensive and the delivery cycle is relatively long, which affects the development of my country's bullet trains to a large extent. In addition, the existing draining b...

AI Technical Summary

Problems solved by technology

The drain boards used in the existing motor vehicles are imported from abroad, so the price is expensive and the delivery cycle is relatively long, which greatly affects the development of my country's motor vehicles

In addition, the existing draining boards have poor plasticity, are easily broken under the action of a certain external force, are easily damaged during long-term use, and need to be replaced irregularly, which not only increases the cost, but also brings inconvenience to the staff. Reduced the operating efficiency of the EMU

In addition, EMUs are often used for long-distance transportation, and the environment in different regions is quite different, which requires the drain board to have excellent environmental adaptability. However, the existing drain boards are far from meeting the needs of my country's EMU development. There are great limitations in heat, sound absorption and pressure resistance. Therefore, the above problems of the existing drain board restrict the stable operation and development of the motor car to a large extent, so there is an urgent need for an improved drain that can overcome the above problems. board material

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