Silicone tube technology of high temperature silicone rubber hose production requirements
High temperature resistant silicone tube is composed of four or five layers offabric reinforced layer and silicon rubber composition of the rubber hose.Strengthen the fabric layer material is Fang
Aromatic polyamide fiber, silica gel strip in the inner and outer surface of fiber cloth completely impregnated silicone rubber compound, each layer of uniformdistribution.
Silica gel tube fabric layer with a thickness of 0.4mm, 0.5mm, nominal mass 150g/m2. Products should be able to continuously at 250 DEG C.
Use, the use of intermittent at 300 DEG c.. The appearance of the hose is not allowed to have foaming, breach, local concave convex defects:
The physical and mechanical properties of high temperature resistant silicone tube shall conform to the provisions of the finger. Performance, silicone tubeproducts hardness: at 23 - 2 DEG C shore
A hardness is 60 - 5 degrees. Blasting pressure: the product must be able to withstand the pressure of the blasting 1.2Mpa.
Silicone high-temperature performance: put 168h at 250 DEG C, inner and outer surfaces shall be free of cracks, fracture, product shore A
The hardness of not more than 70 degrees. Place 168h at 300 DEG C, inner and outer surfaces shall be free of cracks, fracture. 250 C + 168h
After aging, the bursting pressure of not less than 1.2Mp.
Silicone elastic: placing 4H in the low temperature of - 55 DEG C, fast along the radial compression to 50%, an inner surface and an outer surface should not appear
The crack and fracture. Silica gel tube interlayer bonding: when in the rate of 50mm/min opened, the cohesive force of the outer and inner layers should begreater than or equal to 1.75KN/m
.
Silicone ozone resistance: placement of 70h for ozone atmosphere for 40 DEG C50 + 5ppbm, the temperature in the concentration, amplified by two times
Microscopic observation of no visible crack on the surface.
The compression performance: the high temperature test after high temperature silicone tube, with the rate of 50mm/min along the radial compression to 50% in the table.
Surface and the outer surface shall be free of cracks, fracture.
This article from the Shenzhen City Qiyu Silicone Rubber Co., Ltd.: http://www.szhcty.com/news_v.asp? Id=200
In this paper, or feel like this to help you, please share it with your friends ^_^
Online Service 