Is PC made of plastic? In real life, PC is a kind of engineering plastic, which is widely used, so many people worry that this material is harmful to our health. So share with you whether the PC is made of plastic.
Is PC made of plastic 1 Yes, polycarbonate is a tough thermoplastic resin, and its name comes from its internal CO3 group. It can be synthesized from bisphenol A and carbon oxychloride (COCl2). At present, the most commonly used method is melt transesterification (bisphenol A and diphenyl carbonate are synthesized by transesterification and polycondensation).
PC is an almost colorless glassy amorphous polymer with good optical properties. PC high molecular weight resin has high toughness, the notched impact strength of cantilever beam is 600~900J/m, and the thermal deformation temperature of unfilled brand is about130 C, which can be increased by glass fiber reinforcement. The bending modulus of PC can reach more than 2400MPa, and the resin can be processed into large rigid products. When it is lower than100 C, the creep rate under load is very low. PC has poor hydrolysis resistance and cannot be used for products repeatedly subjected to high-pressure steam.
The main performance defects of PC are that its hydrolysis stability is not high enough, it is sensitive to nicks, and its resistance to organic chemicals and scratches is poor, and it will turn yellow after long-term exposure to ultraviolet rays. Like other resins, PC is easily corroded by some organic solvents.
PC material is flame retardant. Oxidation resistance.
Is PC the same as plastic?
PC is different from plastic. PC should be a kind of plastic. Its strength can meet all kinds of requirements from mobile phones to bulletproof glass. The disadvantage is that it is not hard enough compared with metal, which makes its appearance easier to scratch. PC material is becoming an atlas of Han Dynasty, but its strength and toughness are good. Whether it is heavy pressure or general knocking, as long as you don't try to hit it with a stone, it will last long enough.
PC plastic is transparent plastic.
PC plastic polycarbonate is a colorless and transparent amorphous thermoplastic. It has excellent heat resistance, good transparency, high impact resistance and other physical and mechanical properties, and has high light transmittance and refractive index, and is easy to process and shape. Widely used in engineering materials.
Polycarbonate is colorless, transparent, heat-resistant, impact-resistant and flame-retardant, and has good mechanical properties at normal use temperature. Poly (methyl acrylate) is cheap and can produce large equipment.
Advantages and applications:
PC plastics not only have good fluidity and formability, but also have high whiteness, high temperature resistance and ultra-high flame retardancy. PC plastic has high strength, fatigue resistance, stable size and small creep (small change at high temperature). PC plastic has strong thermal aging resistance, and the enhanced UL temperature index reaches 120 140℃ (long-term outdoor aging is also very good).
The three main application fields of PC engineering plastics are glass assembly industry, automobile industry, electronic industry and electrical appliance industry, followed by industrial machinery parts, compact discs, packaging, computers and other office equipment, medical care, films, leisure and protective articles.
Is the computer made of plastic? 1. What is a plastic PC?
1, plastic PC is also a kind of plastic, but it is polycarbonate plastic, basically colorless and transparent, belonging to amorphous thermoplastic materials. But it has high strength, good heat resistance, certain impact resistance and flame retardant effect.
2. According to its composition, it can achieve flame retardant effect without adding additives, so it is widely used in daily life. For example, our glasses or cups, bullet-proof glass, including goggles, and car headlights are all made of this kind of PC plastic, which has only hard materials.
2. What are the types of plastics?
1, there are many kinds of plastics, one of which belongs to ABS, that is to say, resin components are added, some are synthetic and some are natural. In addition, there is a kind of PVC. I believe many people are very familiar with PVC plastic products. Its output ranks second and it is the most widely used type.
2.PVC itself is colorless and transparent, and it is also a hard material. But compared with PC material, its hardness is slightly lower, so it will be much brittle and its transparency is not as good as that of PC. Compared with PC, the mechanical properties are far from each other, but if a plasticizer is added to PVC, it will be made into a soft material. For example, it can be made into pipes or plastic windows, including bank cards used in daily life, which will be made of hard PVC.
According to its price, PVC products are even cheaper than PC, about half or only a quarter of PC, so compared with daily life, PVC products are the most widely used in industry.
Is PC material plastic? What is the meaning of PC material in plastic?
The PC material in plastics refers to polycarbonate.
Polycarbonate is colorless, transparent, heat-resistant, impact-resistant and flame-retardant, and has good mechanical properties at ordinary use temperature. Compared with polymethyl methacrylate with similar properties, polycarbonate has good impact resistance, higher refractive index and good processability, and has UL94 V-0 flame retardant performance without additives.
Polymethyl methacrylate (PMMA) is cheap and can be used to produce large devices by bulk polymerization. At present, with the continuous expansion of polycarbonate production scale, the price difference between polycarbonate and polymethyl methacrylate is narrowing.
Plastic refers to a plastic (flexible) material with high molecular weight synthetic resin as the main component and appropriate additives, such as plasticizer, stabilizer, antioxidant, flame retardant, lubricant and colorant. Or a rigid material formed by curing and crosslinking. Plastics first came from Britain in the 1950 s. Since plastic was developed, it has been widely used in all aspects.
The difference between PC and plastic is that:
1, PC and plastic are two different polymers;
2, the price difference is relatively large, and the price of PC is higher than that of plastic;
3. Plastics usually have good flame retardancy, while PC has poor flame retardancy.
4. Plastics are not resistant to high temperature, and heat stabilizers (about 150-200 degrees) are needed during processing; The processing temperature resistance of PC (about 260-290) is much better than that of plastic.
5. There are soft and hard plastics, the hard ones can be made into plastic steel doors and windows, and the soft ones with large molecular weight can be processed into very soft and interesting articles with plasticizers; PC can't, it can only be a hard product.
The three major application fields of PC engineering plastics are glass assembly industry, automobile industry and electronic appliance industry, followed by industrial machinery parts, compact discs, packaging, computers and other office equipment, medical care, films, leisure and protective articles. PC can be used as door and window glass, and PC laminates are widely used as protective windows in banks, embassies, detention centers and public places, as well as aircraft cabin covers, lighting equipment, industrial safety baffles and bulletproof glass.