Technical terms related to plastics (T line)
- Various tolerances
- volume resistivity
- volume expansion rate
- ultrahigh-molecular-weight polyethylene
- low-density polyethylene
- natural resin
It is a property that indicates how resistant a plastic is to change (i.e., it does not change its characteristics) due to the substance under consideration.
- Weather resistance: resistance to changes in weather conditions such as sunlight and wind and rain
- Impact resistance: resistance to instantaneous external forces
- Corrosion Resistance: Resistance to chemical and outdoor exposure
- Heat resistance: resistance to high temperatures
- Flame resistance: resistance to burning when exposed to flames
- Chemical Resistance: Chemical Resistance
- Solvent resistance: resistance to solvents
It is a numerical value that indicates the difficulty of conducting electricity.
It is also known as electrical resistivity and is often described as volume resistivity, which is when electricity flows through the interior of an object.
volume expansion rate
It is a numerical value that indicates the rate of expansion of the volume of a substance as the temperature rises.
In contrast, the rate of change in the length of a material due to temperature change is called the linear expansion rate, while the rate of change in length and volume is called the thermal expansion rate.
By extending the reaction time compared to the normal manufacturing process, it is polyethylene with a larger molecular weight.
Ordinary polyethylene has a molecular weight of 20,000-300,000, whereas ultra high molecular weight polyethylene has a molecular weight of 1-7 million.
It is classified as a thermoplastic resin and has particularly excellent impact resistance and is often used for parts of transportation machinery and artificial bones.
It is often used for parts of transportation machinery and artificial bones. It also has low temperature properties (mechanical strength at low temperatures) and is often used in gear rails for skiing and snowmobiling.
Low density polyethylene
Also known as "soft polyethylene", it is a soft polyethylene as its name suggests.
It does not have a long polymer structure like ordinary polyethylene, but a short, randomly branched structure and is characterized by low crystallinity.
It has a low melting point, but it is often used as a material for hoses, agricultural sheets and hollow containers because of its softness.
Resins obtained from plants that exist in the natural world.
Amber, pine resin, lacquer, and natural rubber are examples of such materials.
It is a property that allows electricity to pass through.
It is generally believed that plastics do not conduct electricity, and some products use plastics as an insulator.
Some conductive plastics (such as polyacetylene) are as conductive as metals and can be treated with doping agents to increase their conductivity.