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ESD(electro-static discharge) is the American National Standard, namely ANSI/ESD S20.20 |
ESD is a kind of electrical ion excitation generally occurred in daily life. In spite of the extremely |
short (ns) time of occurrence, the ESD energy (njoules~mjoules) can cause harm to the personnel |
and electronic components in certain circumstances. |
This company can provide: |
Conducting materials with resistance value of |
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antistatic materials with resistance value of
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semi-conductive materials with resistance of |
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Polystyrene is one of the earliest (1939) industrialized plastics, which can be produced into EPS
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products. The material is widely used in heat preservation transport of appliances, meters, |
electronics and other industries. The material is featured with low price, easy acquisition of raw |
materials, and effective reduction of quantity and costs. |
Advantages:easy for molding, low gravity, better than PET, large molecule, easy for processing
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Disadvantages:low in wear resistance, low performance in withstanding the impact loads |
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Polypropylene is a kind of general-purpose plastic of good character of service and is highly
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valued inrecent years. Polypropylene possesses fine physical performance and recoverability, |
thus is popular in long distance transport and packages. Due to its high crystallinity, the mechanical |
capacity of the material is greatly improved, which in turn brings the products made of such materials |
high flexibility. |
Advantages:high temperature resistance, uvioresistant, low gravity and abrasion resistance.
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Disadvantages:low rigidity, slow molding, opacity. |
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Polyethylene glycol terephthalate (PET, i.e. polyester）is one of commodity polymer materials. It can
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be widely applied in various fields such as production of fiber, thin film and bottles. The thin films |
can be made into thicker sheets which can be molded by vacuum extraction (called Tray or Blister |
for short). It is also a good and important packing material for electronic industry. Falling into |
INTERNAL TYPE, OUTSIDE COATING TYPE and PERMANENT TYPE, this material can be made |
s into conducting and emiconducting material which is a solution for electrostatic discharge(ESD). |
Advantages: good transparency, excellent rigidity, multiple recycling |
Disadvantages: easily broken under high pressure, high gravity |
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(specific gravity 1.36) |
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Polystyrene(PVC) is the plastic which developed along with the chlorine industry and is also one |
of the plastic which was early industrialized. For the past few years, its development was restricted |
by the pressure from environmental protection bureaus. However, it is also widely welcomed |
because of the following advantages: 1. huge amount of chlorine in polystyrene molecule provides |
good fire resistance; 2, its output ranks only second to that of polyethylene, so the price is quite |
competitive; 3, easy recycling. |
Advantages: low cost, good toughness, excellent rigidity, high wearing coefficient |
Disadvantages: chlorine comes out during production, gives out a big amount toxic gas while burning |
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EU issued in its official reports the Waste Electrical and Electronic Equipment (WEEE) and |
Restriction of the use of certain Hazardous Substances (ROHS) (two regulations for short) on Feb. |
13 2003 and were implemented on Aug. 1 2004. From July 1 2006 on, the new electrical and |
electronic equipment launched into the market shall not apply lead, mercury, chromium, hexavalent
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chromium, PBB (polybrominated biphenyl) and PBDE (Polybrominated Diphenyl Ethers). |
All the materials including PVC, PET, PS, PP have passed SGS testing and meet the requirements of
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EU Environmental Certificate. |
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