PVC-insulated cables are not going to be called pvc cables anymore they are thermoplastic insulated cables and rubber cables are thermosetting! The use of the terms thermoplastic and thermosetting is the solution to the problem of an ever increasing number and variety of materials and blends available for the manufacture of cables.
It has been decided to change the method of classification of materials away from the main ingredient to a generic system based on the main properties of the material. The terms thermoplastic and thermosetting linked with the operating temperature of the cable will give a simple method of material classification. The British Standards Institute is revising their cable standards and it is necessary to bring BS 7671 in line.
It has been decided to change the method of classification of materials away from the main ingredient to a generic system based on the main properties of the material. The terms thermoplastic and thermosetting linked with the operating temperature of the cable will give a simple method of material classification. The British Standards Institute is revising their cable standards and it is necessary to bring BS 7671 in line.
Plastic and rubber are the general terms that most people are familiar with. 'Plastic' usually means pvc 'polyvinyl chloride' which is now classified as thermoplastic. Rubber could mean a number of rubbers e.g. EPR 'ethylene propylene rubber', or CSP 'chlorosulphonated polyethylene', which will now be classified as thermosetting.
Thermoplastic materials are materials that when heated to an appropriate temperature will melt and can be moulded and reformed repeatedly (i.e. plastic in nature). Thermosetting materials are materials that are chemically cross linked (i.e. set in shape and not capable of being remoulded), which give improved characteristics over thermoplastics such as deformation resistance and higher operating temperatures.
The new method, with the addition of operating temperature, gives an all-inclusive method of material classification. For example, XLPE 'cross linked polyeythylene' was neither a plastic or rubber material but is a thermosetting material rated at 90 deg. C.
To help users, where the terms PVC and rubber are being replaced in BS7671, they will have the old terms in brackets, e.g.'thermoplastic (PVC)' and 'thermosetting (rubber)'.
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The Difference Between HDPE, LDPE, XLPE & UHMWPE
This is the common asking ''what is the difference between HDPE-MDPE-LDPE-XLPE and many more. Here you will find some very common usable polyethylele and their indtroduction and difference.
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