Troubleshoot
Antistatic Plastic
Antistatic Plastic
What is static electricity
The name means static electricity. Such charges are the result of electron migration. These are due to changes, friction or material separation. They are the main generators of electrostatic voltage. For example: plastics, glass fiber, rubber, textiles, etc. Under proper conditions, this charge can generate a voltage of 30,000 or 40,000 volts. When an insulating material is created, like plastic, the accumulated charge remains in the stagnation area.
When the plastic material and the human body are in contact with a suitable voltage, such as humans or microcircuits, these electrostatic voltages can then be released through arcs or sparks
The problem of electrostatic charge accumulation and electrostatic discharge have restricted many applications of "insulation" plastics, which are usually evaluated by the measurement of surface resistivity (SR) in ohms/sq. The lower the resistivity value, the more conductive the material.
The danger of electrostatic discharge:
Electrostatic discharge (ESD) occurs when two insulating surfaces rub against each other and then separate. Electrostatic discharge can damage or destroy sensitive electronic components, eliminate or change magnetic media, and cause explosions and fires in flammable environments. Electrostatic discharge can be controlled by materials, such as conductive thermoplastic modified materials, which do not generate a large amount of static charge and can be released before the charge accumulates to a harmful level.
Typical conductive additives:
Additives include carbon black powder, carbon fiber, metal fiber, metal-plated carbon fiber, and metal powder
| Stuffing | characteristic |
| Carbon fiber | ● Increase rigidity and strength ● Shrinkage anisotropy (Warpage tendency) ● Low elongation |
| Toner | ● Shrinkage isotropic (similar to unfilled material) ● Strength/rigidity is similar to unfilled material ● Moderate elongation ● There is erosion phenomenon |
| Stainless steel fiber | ● Shrinkage isotropic (similar to unfilled material) ● Moderate elongation ● No erosion phenomenon ● FDA allowed ● Strength/rigidity is similar to unfilled material |
| Permanent antistatic polymer | ● Full polymer ● Shrink isotropy (similar to unfilled material) ● Moderate elongation ● Can be dyed ● No erosion phenomenon |
| Nickel-plated graphite fiber | ● Shrinkage anisotropy ● Increase rigidity and strength ● EMI shielding ability |
Related term explanation:
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●Anti-static products:
Surface resistivity ranges from 109 to 1012 Ω/sq, which can effectively reduce frictional static electricity generation and prevent electrostatic discharge due to human contact.
●Electrostatic Dissipation Products (ESD):
Surface resistivity ranges from 106 to 109 Ω/sq, which can prevent electrostatic discharge due to human contact.
●Conductive products:
Surface resistivity ranges from 102 to 105 Ω/sq, which can eliminate frictional static electricity.
●EMI/RFI shielding products:
Surface resistivity ranges from 100 to 102 Ω/sq, which can absorb and reflect electromagnetic and radio frequency interference.
[Electromagnetic Interference (EMI) Radio Frequency Interference (RFI): Can be used for key electronic equipment without failure]
Anti-static POM specifications
| Materials | Model | Vendor | Material representation | Color | Surface resistivity (Ω) | Features |
| POM | M90-48 | Polyplastics | POM | Can be dyed | 1 x 1013 | |
| POM | CH-10 | Polyplastics | POM-CF10 | Black | 5 x 103 | Friction and wear resistance · carbon fiber reinforced |
| POM | EB-8 | Polyplastics | POM-CD10 | Black | 5 x 102 | |
| POM | EB-10 | Polyplastics | POM-CD10 | Black | 2 x 102 | |
| POM | ES-5 | Polyplastics | POM-CD5 | Black | 5 x 102 | |
| POM | EW-02 | Polyplastics | POM+PE-CD10 | Black | 5 x 102 | |
| POM | ST900 | Titan | Can be dyed | 1 x 1012 | Medium flow, permanent antistatic, dyeable | |
| POM | ST220 | Titan | Can be dyed | 1 x 108 | Extrusion grade, permanent antistatic, dyeable | |
| POM | ST915 | Titan | Can be dyed | 1 x 108 | Standard flow, permanent antistatic, dyeable | |
| POM | EX910 | Titan | POM-(CF+carbon black) | Black | 1 x 106-8 | Injection grade, permanent antistatic, conductive carbon black |
| POM | EX210 | Titan | POM-(CF+carbon black) | Black | 1 x 105-6 | Extrusion grade, permanent antistatic, conductive carbon black |
| POM | NC940 | Titan | - | Black | - | Injection grade, permanent antistatic, carbon nanotube, high cleanliness, black |
| POM | CF910 | Titan | POM-CF10 | Black | 1 x 104 | Friction and wear resistance · carbon fiber reinforced |
| POM | CF920 | Titan | POM-CF20 | Black | 2x 102-4 | Friction and wear resistance · carbon fiber reinforced |
Ordinary general grade POM M90-44 surface resistivity 1 x 1016
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