Incombustible insulation materials with vibration preventing in an extremely low temperature and manufacturing process of it

摘要

The present invention relates to a method of manufacturing a superior non-flammable insulation and shock-resistant properties at cryogenic temperatures, glass fiber 50 to 80 wt%, 10 to 40% by weight polypropylene fibers, meta-aramid fibers from 0 to manufacture a needle punched composite nonwoven fabric consisting of 10% by weight, and then, the temperature is needle punched by using a heating device 200 ~ 300 to melt the polypropylene fibers contained in the composite nonwoven fabric, the needle punched non-combustible aluminum foil was placed on both surfaces of the composite nonwoven fabric, and then, the temperature is pressed to a thickness of 1.5 ~ 4.5mm with a cooling roll of 0 ~ 100 and characterized in that the molding. Further, after forming the needle punched non-woven fabric composite, and to adjust the fiber orientation direction in the composite nonwoven fabric in the thickness direction through the needle hook, and the glass fiber is A, C, E, S- glass, silica fibers, the aluminum characterized in that the thin film is 5 ~ 300 thickness, and the thickness of the needle punched non-woven fabric composite is 5 ~ 12mm, unit weight is 300 ~ 1,200g / m ² is characterized in that. Excellent shock-resistant characteristics in non-flammable insulating material is made of a cryogenic production process of the present invention is basically a glass fiber, and using a needle punched composite nonwoven fabric consisting of a mixture of polypropylene fibers and the composition was heated at a temperature and time can melt the polypropylene and as the pressure that is required to cool to a thin thickness that the surface is treated with aluminum insulation of the final product, even if the composite nonwoven fabric squeezed molten polypropylene by polypropylene fibers contained in the composite nonwoven fabric is heated at a strong pressure inside poly propylene component is a glass fiber the entire continuous glass fiber can not be created on the metrics that can be connected at the same time physically in the composite nonwoven fabric forms a continuous phase, and since the polypropylene is connected to a discontinuous upset, in a percentage in the composite nonwoven fabric blank forming space and it forms a structure in the form of physical approach closer than before the heating between glass fiber monofilaments, even if the behavior of the polypropylene cryogenic glass phase at a temperature below the glass transition shown is not present and a unique glass fiber layer for the external impact a characteristic that represents almost all the characteristics. In addition, non-flammable insulating material of the present invention is to exhibit excellent thermal insulation and at the same time excellent low temperature flexibility and impact properties by the empty space between the laminated fiber filament, additionally available meta-aramid fibers are mixed with a small amount of unique excellent vibration damping properties gives even prevented by providing excellent vibration transmission properties than anti-vibration transmission characteristics through the glass fiber, and an aluminum thin film and the lower polypropylene content of the surface has an excellent effect that can exhibit excellent non-combustible in the welding environment in which access of the construction process, .