Influencing factors on quality of asbestos rubber sheet
When it comes to the factors that affect the quality of asbestos rubber sheets, we should first mention the quality of raw materials。 Raw materials are the basis of rubber sheets。 If the quality of raw materials chosen by the manufacturer is not good, the rubber sheets produced can not meet the standards we need。 Therefore, the manufacturer should pay attention to the quality of raw materials at first。
Two factors affecting the quality of rubber sheet are production process. From the emergence of asbestos rubber sheet to the present, its development history is also long, its production process has naturally undergone constant updates, the traditional production process has been unable to meet the needs of today's society, if manufacturers still use traditional technology, then the rubber sheet products produced naturally have many shortcomings, so we suggest manufacturers use better production process, for Friends dedicate high quality rubber products. In the installation of sealing gaskets, the important thing is to avoid the damage of sealing parts. In addition to the appropriate smoothness, chamfering and burr removal, there are also appropriate tools, how to avoid dust drifting on the surface of sealing parts in the installation process, how to place them properly when installed, such as valve assembly, in order to avoid crushing seals, clean hydraulic media, etc.
Asbestos is a kind of silicate mineral fibers widely used in building materials fireproof board. It is also a kind of natural mineral fibers. It has good tensile strength, good thermal insulation and corrosion resistance, and is not easy to burn, so it is widely used. There are many kinds of asbestos, the common three are chrysotile (white asbestos), asbestos (brown asbestos) and crocidolite (blue asbestos), among which chrysotile asbestos is abundant and widely used. Asbestos rubber sheet is recognized as the best sealing material in the industry. It can often be seen in the sealing of machinery and so on, which shows its great role.
The use temperature of asbestos rubber sheet is widely used in industrial and mining enterprises, transportation departments, housing and ground, etc. Used as sealing rubber ring, rubber cushion, door and window seals and paving workbench and floor, asbestos rubber board production temperature models have two national standards and standards. The service temperature of asbestos rubber sheet is 20 +140. It has high hardness, general physical and mechanical properties and can work under low pressure.
Asbestos rubber sheet is mainly used in high temperature and high pressure water, saturated steam, superheated steam, gas, inert gas and other media equipment pipeline flange connection sealing gasket materials. So we should pay attention to the performance of asbestos rubber sheet, and the quality of asbestos fiber is the main factor determining its performance. Therefore, asbestos fibers are required to have high tensile strength, good heat resistance, appropriate length, flexibility and elasticity. Generally, high-pressure asbestos rubber sheets and oil-resistant asbestos rubber sheets above 400 are made of grade 2 and 3 asbestos fibers. At present, due to the limitation of asbestos rubber board, more asbestos-free rubber board in Shichuan is used to replace the original asbestos board.
As an indispensable sealing material in machinery, asbestos rubber sheet is very popular。 So, how can customers who need to use rubber sheet for sealing buy Rubber sheet?
Simpler and more economical way is to buy asbestos rubber sheets directly from manufacturers. Most manufacturers will sell directly to customers who buy rubber sheets in large quantities. This way is not only beneficial for manufacturers to accumulate customers, but also for buyers, the price of direct selling is cheaper and the quality is more guaranteed, so this kind of purchase method is very popular. Another way to buy rubber sheets from retailers is to buy them directly from manufacturers. The retailer is not a manufacturer. It is the intermediate link between the manufacturer and the customer. It earns profits by price difference. The advantage of purchasing rubber sheets from retailers is that retailers supply a variety of brands, customers can choose more products, and can save money such as road fees. Different from the direct sales of manufacturers and retailers, asbestos rubber sheet manufacturers are contacted through the Internet. After selecting products, developed logistics will be delivered to their doors in a short time. This is a new way of purchase under the development of technology and is in the process of gradual development.
Glass fiber is a kind of inorganic non-metallic material with excellent properties. The original English name is glassfiber. It uses glass ball or waste glass as raw material to melt, draw, winding and weave at high temperature. After the formation of various products, the diameter of glass fiber monofilament from several microns to more than twenty meters microns, equivalent to a hair of 1/20-1/5, each bunch of fiber precursor has hundreds or even thousands of monofilaments, usually used as reinforcing materials in composite materials, electrical insulation materials, insulation materials, circuit substrates, etc., widely used in various fields of national economy. Glass fibers have (non) twisted roving and textile spinning yarns with different specifications and different uses by twisting. There are mainly two kinds of alkali-free (R2O < 0.8%, code E) and neutral alkali (R2O < 0.47%, code C). It is mainly used for the production of glass fibre products such as hand paste, lamination, winding, spray forming reinforcement materials, insulation, composite, fire protection and so on.