Imported pc material is what material
Imported pc material is what material. pc material it is more common in our lives a material, many things are made of this material, but there are some people on it is not particularly understand. The following look at the import of pc material is what material.
Imported pc material is what material 1PC is a linear carbonate polyester, the molecule carbonate groups and some other groups arranged in alternation, these groups can be aromatic, can be aliphatic, or both. Bisphenol A-based PC is the most important industrial product.
PC is an almost colorless glassy amorphous polymer with good optical properties. pc high molecular weight resins have high toughness, cantilever beam notched impact strength of 600~900J/m, unfilled grades of heat distortion temperature of about 130°C, glass fiber reinforced can make this value increased by 10°C.
The flexural modulus of pc is up to 2400MPa or more. More than 2400MPa, the resin can be processed into large rigid products. The creep rate under load is very low at temperatures below 100°C. PC has poor hydrolysis resistance and cannot be used for products that are repeatedly subjected to high pressure steam.
Expanded Information:
Polycarbonate has a good resistance to impact and thermal distortion. It has good impact resistance, heat distortion resistance, good weather resistance and high hardness, so it is suitable for the production of cars and light trucks of various parts, which are mainly concentrated in the lighting system, instrument panels, heating panels, defrosters and bumpers made of polycarbonate alloys, etc.
Polycarbonate is used in the production of automotive and light trucks.
The three major applications of PC engineering plastics are the glass assembly industry, automotive industry and electronics, electrical industry, followed by industrial machinery parts, CD-ROMs, packaging, computers and other office equipment, medical and health care, film, leisure and protective equipment.
PC can be used as window and door glass, PC laminate is widely used in banks, embassies, detention centers and public **** places of protective windows, for aircraft hatch covers, lighting equipment, industrial safety stalls and bulletproof glass.
Imported pc material is what material 2PCTG a transparent plastic, is a kind of amorphous *** polyester, PCTG commonly used *** poly monomer for 1,4-cyclohexanedimethanol (CHDM), the full name of the polyterephthalic acid - 1,4-cyclohexanedimethanol ester.
The number 07 represents the material of the plastic, the material is PCTG.
Plastic can be found everywhere in our lives, plastic products are made of different materials, different materials, different applications. The numbers at the bottom of the plastic bottles represent different materials.
The number "1" represents polyethylene terephthalate (PET), which is mainly used for mineral water bottles, carbonated, juice bottles, soy sauce and vinegar bottles, etc. The heat-resistant temperature of PET bottles is 70 degrees Celsius, which is only suitable for bottling warm or frozen beverages, and it is easy to be deformed when bottled with boiled water or heated and the substances that are harmful to human beings will be dissolved.
The number "2" stands for High Density Polyethylene, or HDPE, which is a composite film made from other plastics and is also used for aquatic products.
The number "3" stands for polyvinyl chloride, or PVC, which is also used to make intravenous infusion bags and disposable sterile infusion devices because it is cheap. However, long-term use can lead to the accumulation of DEHP, a hazardous substance. Therefore, from a safety point of view, the pharmaceutical industry is choosing non-PVC materials as the future trend.
The number "4" is low-density polyethylene, or LDPE. 4 plastic is used in a large number of packaging. LDPE is mainly used in the production of food cling film and plastic bags for food.
The number "5" is polypropylene, PP. one is to make containers. PP and its material is different, PP can be put into the microwave oven inside the plastic containers, and can be reused plastic containers, can be used as storage containers to store food, oils and condiments, and so on.
The second do is packaging film, there are un-stretched and bi-oriented. Unstretched polypropylene (CPP) is commonly used in snacks, bread, fruit and other packaging; biaxially oriented polypropylene (BOPP) is comparable to cellophane flexible packaging materials.
The number "6" for polystyrene, that is, PS. PS in packaging is mainly processed into film and foam use. Film is used for packaging of fruits and vegetables; Styrofoam is mostly used for bowls of instant noodle boxes and fast food boxes, etc., but it is not heat-resistant, so it can not be placed in a microwave oven directly heated, so as not to release toxic chemicals due to the temperature is too high.
The number "7" is polycarbonate, which is PC or other plastics. PC material made of plastic containers, may release toxic bisphenol A, the higher the temperature, the more the release, the faster the speed, so do not use heat, and do not be in the direct sunlight.
Expanded Information:
Plastic Composition:
Some plastics are simply resins in themselves. resin, such as polyethylene, polystyrene, etc., known as single-component plastics. Some plastics in addition to synthetic resins, but also contains other auxiliary materials, such as plasticizers, stabilizers, coloring agents, a variety of fillers, etc., known as multi-component plastics.
(a) synthetic resins
Synthetic resins refers to coal, calcium carbide, petroleum, natural gas, and some agricultural by-products as the main raw material, the first low molecular compounds with a certain synthesis conditions (monomer), and then through chemical, physical and other methods of synthesis of polymer compounds. The characteristics of these compounds are similar to natural resins (e.g. rosin, amber, wormwood, etc.), but the performance is more superior than natural resins. For example: synthetic resin dentures.
The content of synthetic resins in the plastic of all components accounted for 40% of a l00%, plays a role in bonding, which determines the main properties of the plastic, such as mechanical strength, hardness, aging resistance, elasticity, chemical stability, photoelectricity and so on.
(2) plastic additives
Plastic additives in plastics to add additives in order to improve the processing performance, improve the use of efficiency and reduce costs. Additives in plastic materials accounted for a small proportion, but the quality of plastic products have a great impact. Different kinds of plastics, due to different molding and processing methods and conditions of use, the types and amounts of additives required are also different. The main additives are the following categories:
1. Plasticizers
Plasticizers can increase the softness of the plastic, elongation, plasticity, reduce the flow temperature of the plastic and the hardness of the plastic products are conducive to the molding of plastic products. Commonly used are benzene dicarboxylic acid esters, sebacate esters, chlorinated paraffins and camphor. Our most common is camphor.
2. Stabilizers
We all know that plastic products in the processing, storage and use of process, in the light, heat, the role of oxygen, will occur under the action of fading, embrittlement, cracking of the aging phenomenon. In order to delay and prevent the occurrence of aging phenomenon, it is necessary to add stabilizers. Mainly used to prevent thermal aging, called heat stabilizers; mainly used to prevent oxidative aging, called antioxidants; mainly used to prevent light aging, called light stabilizers, they are collectively referred to as stabilizers.
The best performing plastic stabilizers today are methyltin heat stabilizers (181), which are very effective in calendering, extrusion, injection and blow molding of rigid polyethylene (PVC). Because of its high safety, it is especially used in food packaging and high-definition rigid polyethylene products, and at the same time, it is also commonly used in plastic doors and windows, water pipes, decorative materials to replace other highly toxic plastic heat stabilizers.
It has been widely used in the United States, Europe, Japan. In recent years, 181methyltin heat stabilizer began to be used in large quantities in China.
3. Flame retardants
The additives that can improve the flame resistance of plastics are called flame retardants. Most of the plastics containing flame retardants are self-extinguishing, or the burning rate is slowed down. Commonly used flame retardants are antimony oxide and aluminum, boron compounds, halides and phosphate esters, tetrachlorobenzene dicarboxylic anhydride, tetra-O-benzene dicarboxylic anhydride and so on.
4. Antistatic agents
Antistatic agents play a role in eliminating or reducing static electricity generated on the surface of plastic products. Most of the antistatic agents are electrolytes, they are limited compatibility with synthetic resins, so that they can migrate to the surface of the plastic to achieve moisture absorption and eliminate the role of static electricity.
5. Foaming agent
Plastic foaming agent is a low molecular organic matter can be vaporized at a certain temperature, such as dichlorodifluoromethane; or heat will decompose out of the gas organic compounds. These gases remain in the plastic matrix to form a number of fine foam structure of the foam. Commonly used azo compounds, nitroso compounds and so on.
6. colorants
Colorants are used for coloring plastics. Mainly play a beautifying, modifying role. About 80% of plastic products are made after coloring the final product.
7. lubricant
lubricant is to improve the plastic heating molding release and improve the surface finish of the products and add substances. Commonly used ` lubricants are: stearic acid and its salts, paraffin wax, synthetic wax and so on.
8. reinforcing materials and fillers
In many plastics, reinforcing materials and fillers account for a considerable proportion, especially reinforced plastics and calcium plastic materials. The main purpose is: in order to improve the strength and rigidity of plastic products, generally adding a variety of fiber materials or inorganic materials. The most commonly used reinforcing materials are: glass fiber, asbestos, quartz, carbon black, silicate, calcium carbonate, metal oxides and so on.
What is the material of imported pc material3A. What is the material of plastic PC
1. Plastic PC is also a type of plastic, but it is a kind of polycarbonate plastic, which is basically colorless and transparent, belonging to a kind of unqualified thermoplastic material. However, its strength is very high, heat resistance is also very good, has a certain impact resistance, with flame retardant effect.
2, according to its composition, without additives, can achieve the role of flame retardant, so it is more widely used in daily life, such as the lenses of the glasses we carry or drink cups of water, bulletproof glass, including goggles, and automotive headlamps, are made of this PC plastic, which is only hard material.
Second, what are the types of plastic division
1, there are many types of plastic, there is a kind of plastic belonging to the ABS, which indicates that the increase in the resin component, some synthetic, some natural. In addition to this there is a kind of PVC, I believe that many people are very familiar with the plastic products of PVC, it is the production of the 2nd place, is the most widely used type.
2, the PVC itself belongs to the colorless and transparent, is also a hard material, but compared with the PC material, its hardness is slightly lower, it will be a lot of brittle, transparency is not as good as the PC. mechanical properties and PC compared to the difference is also very far, but if the PVC inside the increase of plasticizers, will be made into soft materials. For example, it can be made into pipes or plastic windows, including daily life, the use of bank cards, will be made of hard PVC.
3, if you distinguish from its price, PVC products are cheaper than PC, about half or only a quarter of it, so compared in daily life, the industrial range is most widely used.