Polyhydrocarbon silicon-oxygen plastic pipe

Abstract

A polysiloxane plastic hose that renders the surface of the hose non-tacky and prevents pigmentation while retaining the properties of silicone. By laminating a gas barrier layer (2) formed of a resin composition containing an inorganic layered compound on the outer surface (1a) of the hose body (1), the outer surface (1a) of the hose body (1) is integrally Covered with an inorganic layered compound with good gas barrier properties, the silicone rubber is not exposed, and the gas permeation inside and outside the hose is blocked.

Description

technical field [0001] The invention relates to a polysiloxane plastic hose with good heat resistance and food safety, which is widely used in food, beverage, medical equipment, chemical and other industries. Specifically, it relates to a polysiloxane plastic hose whose main component is silicone rubber. Background technique [0002] Conventionally, such polysiloxane-reinforced plastic hoses have a multilayer structure with silicone rubber as the base layer (for example, refer to Patent Document 1). [0003] In addition, there is also a hose in which an inner layer (inner rubber) containing silicone rubber is extruded, and at the same time, a braided layer (reinforcing wire) is braided on its outer peripheral surface, and then an outer layer (outer rubber) containing silicone rubber is extruded. Rubber) is covered on the outer peripheral surface of the above-mentioned knitted fabric, and the above-mentioned parts are integrated (for example, refer to Patent Document 2). ...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned existing polysiloxane plastic hose has the following problems: since the silicone rubber exposed on the outer surface of the hose body is viscous, the surface of the hose will change due to its viscous action and static electricity. It is easy to absorb foreign matter such as dust or dirt, and it is necessary to adequately manage it during transportation and storage

[0007] Moreover, there is the following problem: due to the good air permeability of silicone rubber, various gases in the air outside the hose will be adsorbed inside the hose, and the pigmentation of the above-mentioned gases will be deposited, so that the hose is prone to discoloration such as yellowing; Especially when the hose body is transparent or translucent, when the fluid in the hose can be seen from the outside, it becomes difficult to see through the inside

[0008] It also has the following problems: since oxygen easily permeates silicone rubber, especially in the case where the fluid is food, the quality of the food is likely to deteriorate, and sometimes rot, etc.

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