With the development of science and technology, plastic materials have been widely used in various fields, and plastic products can be seen everywhere in life. So what exactly is plastic? What are the types and properties of plastics?
The main component of plastic raw materials is resin, which is mainly composed of polymer synthetic resin and infiltrated into various auxiliary materials or additives. It has plasticity and mobility under specific temperature and pressure, and can be molded into a certain shape and under certain conditions. Materials that retain their shape.
Most plastic raw materials are extracted from some oils. The most familiar part of PC material (polycarbonate plastic) is extracted from petroleum, ABS (acrylonitrile-butadiene-styrene copolymer plastic) is Extracted from coal, ABS will be soot-like when it is burned out; POM (polyoxymethylene plastic) is extracted from natural gas, and POM will have a very smelly gas smell when it is burned out.
So far, there are nearly 100 kinds of known plastic materials, and the widely used ones are: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), Acrylonitrile Butadiene Styrene(ABS),Polycarbonate(PC),polymethylmethacrylate(PMMA).Hongfa is a manufacturer of plastic injection enclosure for industrial electronic device,the mainly material we used is ABS,PC,PMMA,PVC.Total we mainly introduce the characteristics and differences of these plastic material.
- ABS: the whole name of ABS is Acrylonitrile Butadiene Styrene,It is copolymerized by three monomers of acrylonitrile-butadiene-styrene.ABS has good comprehensive performance, high impact strength, chemical stability and good electrical properties.Good fusion with 372 plexiglass, made into two-color plastic parts, and the surface can be chrome-plated and painted.Due to the different proportions of the three monomers, it can have different properties and melting temperatures. If the ABS with flow properties is blended with other plastics or additives, it can be expanded to ABS with different uses and properties, such as impact grade, heat resistance grade , flame retardant grade, transparent grade, enhanced grade, electroplating grade, etc.
Uses of ABS plastic: suitable for making general electronic device enclosures, mechanical parts, wear-reducing and wear-resistant parts, transmission parts and telecommunication parts.
2.PC: PC full name Polycarbonate.it is a tough thermoplastic resin.PC has good impact resistance, thermal distortion resistance, high hardness;High transparency, non-toxic, tasteless and easy to dye; good weather resistance, heat resistance, good insulation; low molding shrinkage (0.5%~0.7%), good dimensional stability.The three major application areas of PC engineering plastics are the glass assembly industry, the automotive industry and the electronics and electrical industries, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, medical and health care, films, leisure and protective equipment, etc.
3. PMMA:Full name polymethylmethacrylate,it also called Acrylic.with high transparency, amorphous polymer, 92% light transmittance, thermal denaturation temperature between 74°C~102°C.The advantages are high optical transparency; good weather resistance, rigidity, and easy dyeing. The disadvantage is poor chemical resistance, long-term use temperature up to 93°C, and brittleness at stress concentrations.
PMMA acrylic materials are often used as acrylic sheets, acrylic plastic particles, acrylic light boxes, signboards, acrylic bathtubs, etc. Diffusers), buttons of electronic products (especially transparent), consumer goods (drink cups, stationery, etc.).
4. PVC: full name polyvinyl chloride.Before adding plasticizer, PVC is a hard plastic with good moisture resistance, but it is also decomposed by ketone and ester solvents.
Advantages: good dimensional stability; low cost; good weather resistance; adding plasticizers in different proportions can easily adjust the hardness.
Disadvantages: poor chemical resistance; poor temperature resistance; higher density than general plastics; hydrogen chloride will be generated after thermal decomposition.
Mainly used in engraving, exhibition board, sign board, bathroom furniture, various high-end furniture boards, building exterior wall panels, residential, office, public building compartments, commercial decorative frames, clean room boards, etc.
These are the four plastic materials we used for our plastic enclosures,and the ABS is the most used for electronic device housing.If you want to know about other plastic material or our plastic casing,please contact freely.