In the field of mechanical parts processing industry, plastics are often used as raw materials for further processing. There are many types of plastics on the market now, so what kind of plastic should we choose when processing mechanical parts? Let the small Make it up and tell everyone!
1. ABS plastic
ABS parts manufacturing process
CNC Machining / Prototype Production / Injection Molding / Blister / 3D Printing
ABS material characteristics and application
ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, and good surface gloss. It is easy to paint. , coloring, and secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, etc. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. Wide range of thermoplastic engineering plastics. ABS is usually light yellow or milky white granular non-crystalline resin. ABS is one of the most widely used engineering plastics.
2. Nylon PA6
Nylon Manufacturing Process
CNC Machining / Prototype Production / Injection Molding / 3D Printing
Characteristics and application of nylon PA6
The material has the most superior comprehensive properties, including mechanical strength, stiffness, toughness, mechanical shock absorption and wear resistance. These properties, combined with good electrical insulation and chemical resistance, make nylon 6 a “general purpose” material for the manufacture of mechanical structural and serviceable components.
3. Nylon PA66
Nylon PA66 manufacturing process
CNC Machining / Prototype Production / Injection Molding / 3D Printing
Characteristics and application of nylon PA66
Compared with nylon 6, its mechanical strength, stiffness, heat resistance, wear resistance and creep resistance are better, but its impact strength and mechanical shock absorption performance are reduced, so it is very suitable for automatic lathe machining. PA66 is more widely used in the automotive industry, instrument housings and other products that require impact resistance and high strength.
4. Nylon PA12
Nylon PA12 manufacturing process
CNC Machining / Prototype Production / Injection Molding / 3D Printing
Characteristics and application of nylon PA12
The scientific name of PA12 is polylaurolactam, also known as nylon 12. The basic raw material for its polymerization is butadiene, which can rely on petrochemicals. It is a semi-crystalline-crystalline thermoplastic material. Its properties are similar to PA11, but the crystal structure is different. PA12 is a good electrical insulator and like other polyamides will not affect the insulation performance due to moisture. It has good impact resistance and chemical stability. PA12 has many improved varieties in terms of plasticizing properties and strengthening properties. Compared with PA6 and PA66, these materials have lower melting point and density, and have very high moisture regain. PA12 has no resistance to strong oxidizing acids. Typical applications of nylon 12: water meters and other commercial equipment, cable sleeves, mechanical cams, sliding mechanisms, photovoltaic backplanes and bearings, etc.
5. PVC
PVC manufacturing process
CNC Machining / Prototype Production / Injection Molding
PVC characteristics and application
Polyvinyl chloride, English abbreviation PVC (Polyvinyl chloride), is vinyl chloride monomer (VCM for short) in peroxide, azo compound and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization reaction aggregated polymers. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC used to be the most widely used general-purpose plastic in the world. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc.
6. POM Saigang
POM manufacturing process
CNC Machining / Prototyping / Injection Molding
POM Features and Applications
POM is a tough and elastic material with good creep resistance, geometric stability and impact resistance even at low temperatures. POM has both homopolymer and copolymer materials. Homopolymer materials have good tensile strength and fatigue resistance, but are not easy to process. Copolymer materials have good thermal stability, chemical stability and easy processing. Both homopolymer and copolymer materials are crystalline materials and are not easy to absorb moisture. The high degree of crystallinity of POM leads to a relatively high shrinkage rate, which can reach as high as 2% to 3.5%. There are different shrinkage rates for various reinforced materials. POM has a very low coefficient of friction and good geometric stability, especially suitable for making gears and bearings. It is also used in plumbing components (valves, pump housings), lawn equipment, etc. due to its high temperature resistance properties. Audio equipment such as VCRs, CD, LD, and MD players, radios, earphones, and stereos, OA equipment such as printers, keyboards, and CD-ROM drives, home appliances such as washing machines, dryers, and hair dryers, mechanical parts for seat belts, and exteriors of car doors Automotive parts such as handles, reflectors, and engine compartments, precision parts such as cameras and clocks, building materials, molding materials for toys such as game machines, and stationery.
7. Bakelite
Bakelite manufacturing process
CNC processing / Prototype production
Characteristics and application of bakelite
Bakelite is the first variety of plastics to be put into industrial production. It has high mechanical strength, good insulation, heat resistance, and corrosion resistance, so it is often used in the manufacture of electrical materials, such as switches, lamp holders, earphones, telephone casings, instrument casings, etc. “Bakelite” is named after it .
8. Plexiglass PMMA acrylic
Acrylic Manufacturing Process
CNC Machining / Prototype Production / Injection Molding / Blister
Acrylic properties and applications
Plexiglass (Polymethyl methacrylate) is a popular name, abbreviated as PMMA. The chemical name of this polymer transparent material is polymethyl methacrylate, which is a polymer compound formed by the polymerization of methyl methacrylate. It is an important thermoplastic that was developed earlier. There are four types of plexiglass: colorless and transparent, colored and transparent, pearlescent, and embossed plexiglass. Plexiglass is commonly known as acrylic, Zhongxuan acrylic, and acrylic. Plexiglass has good transparency, chemical stability, mechanical properties and weather resistance, easy to dye, easy to process, and beautiful appearance. Plexiglass is also called gelatin glass, acrylic and so on. This material is widely used in the production of advertising light boxes, nameplates, etc.
9. PC
PC manufacturing process
CNC Machining / Prototype Production / Injection Molding / Blister
PC Features and Applications
Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. The three major application areas of PC engineering plastics are glass assembly industry, automobile industry and electronics and electrical appliances industry, followed by industrial machinery parts, CDs, packaging, computers and other office equipment, medical and health care, films, leisure and protective equipment, etc.
10. PP
PP manufacturing process
CNC Machining / Prototype Production / Injection Molding
PP characteristics and applications
Polypropylene is a thermoplastic resin produced by the polymerization of propylene. The relative density is small, only 0.89-0.91, which is one of the lightest varieties in plastics. Due to the high degree of crystallinity, this material has very good surface stiffness and scratch resistance properties. PP does not have environmental stress cracking problems.
11.PPS
PPS manufacturing process
CNC processing / Prototype production
PPS characteristics and application
PPS plastic (polyphenylene sulfide) is a thermoplastic special engineering plastic with excellent comprehensive properties. Its outstanding features are high temperature resistance, corrosion resistance and superior mechanical properties. Excellent electrical insulation (especially high-frequency insulation), white hard and brittle, metal sound when dropped on the ground, light transmittance second only to organic glass, coloring, water resistance, and good chemical stability. It has excellent flame retardancy and is a non-combustible plastic. Average strength, good rigidity, but brittle, prone to stress brittleness; not resistant to benzene, gasoline and other organic solvents; long-term use temperature can reach 260 degrees, and remain stable in 400 degrees of air or nitrogen. After modification by adding glass fiber or other reinforcing materials, the impact strength can be greatly improved, heat resistance and other mechanical properties are also improved, the density is increased to 1.6-1.9, and the molding shrinkage is as small as 0.15-0.25%. It is used in the production of heat-resistant parts, insulating parts, chemical instruments, optical instruments and other parts.
12. PEEK
PEEK manufacturing process
CNC processing / Prototype production
PEEK characteristics and applications
Polyetheretherketone (PEEK) resin is a special engineering plastic with excellent performance. Compared with other special engineering plastics, it has more significant advantages, such as high temperature resistance of 260 degrees, excellent mechanical properties, good self-lubrication, and chemical corrosion resistance. , flame retardant, peeling resistance, abrasion resistance, strong nitric acid, concentrated sulfuric acid, radiation resistance, super mechanical properties can be used in high-end machinery, nuclear engineering and aviation and other technologies.
13. Teflon PTFE
Teflon manufacturing process
CNC processing / Prototype production
Teflon characteristics and applications
Polytetrafluoroethylene (Polytetrafluoroethylene), the English abbreviation is PTFE, (commonly known as “Plastic King, Hala”), the brand name is Teflon®, in China, due to the pronunciation, the trademark “Teflon” is also called “special “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon” and so on are all transliterations of “Teflon”. The products of this material are generally referred to as “non-stick coating”; it is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material is resistant to acid and alkali, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can be used for lubrication, and it has also become an ideal coating for the inner layer of non-stick pans and water pipes.
14. Photosensitive resin
Photosensitive resin manufacturing process
3D printing
Characteristics and application of photosensitive resin
The material used for photocuring rapid prototyping is liquid photocurable resin, or liquid photosensitive resin, which is mainly composed of oligomers, photoinitiators and diluents. In the past two years, photosensitive resins are being used in the emerging industry of 3D printing, and are favored and valued by the industry because of their excellent characteristics.
15. Polyurethane PU
PU manufacturing process
Shouban making complex mold processing / injection molding
PU characteristics and applications
Polyurethane is a kind of polymer whose main chain contains -NHCOO-repeating structural units. The English abbreviation is PU, including rigid polyurethane plastics, soft polyurethane plastics, polyurethane elastomers and other forms, and is divided into two categories: thermoplastic and thermosetting. Its raw materials are generally presented in the state of resin.
16. Rubber
rubber manufacturing process
Shouban making complex mold processing / injection molding
Rubber properties and applications
Rubber: A highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer, its glass transition temperature (T g) is low, and its molecular weight is often large, greater than hundreds of thousands.
17. PET
PET manufacturing process
CNC Machining / Prototype Production / Injection Molding
PET characteristics and applications
Polyethylene terephthalate is the most important variety of thermoplastic polyester, commonly known as polyester resin. It is prepared by transesterifying dimethyl terephthalate with ethylene glycol or esterifying terephthalic acid with ethylene glycol to synthesize bishydroxyethyl terephthalate, followed by polycondensation. Together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester. It has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor. Creep resistance, fatigue resistance, friction resistance and dimensional stability are all very good.
18. PBT
PBT manufacturing process
CNC Machining / Prototype Production / Injection Molding
PBT characteristics and application
Polybutylene terephthalate, the English name polybutylene terephthalate (referred to as PBT), belongs to the polyester series, which is composed of 1.4-pbt butanediol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalic acid It is a translucent to opaque, milky white translucent to opaque, crystalline thermoplastic polyester resin formed by polycondensation of formate (DMT) and produced through a kneading process. Together with PET, it is collectively referred to as thermoplastic polyester, or saturated polyester. Household appliances (food processing blades, vacuum cleaner components, electric fans, hair dryer housings, coffee utensils, etc.), electrical components (switches, motor housings, fuse boxes, computer keyboard keys, etc.), automotive industry (radiator panes , body panels, wheel covers, door and window parts, etc.).
Do you know what is precision mechanical parts processing? According to the literal meaning: it is very precise machining. Precision mechanical parts processing is a kind of mechanical processing, but it is precision processing. With the development of industry and the continuous change of demand, precision mechanical processing has changed a lot. Its classification is more and more, and its direction is more and more With the development of science and technology, its technology is constantly improving, and the quality and accuracy of processing are also getting higher and higher. The development of science and technology and economy feel the direction of the development of precision machinery.Since the emergence of machinery, there have been corresponding mechanical parts. But as a discipline, mechanical parts are separated from mechanical construction and mechanics. With the development of the machinery industry, the emergence of new design theories and methods, new materials, and new processes, mechanical parts have entered a new stage of development. Theories such as finite element method, fracture mechanics, elastohydrodynamic lubrication, optimization design, reliability design, computer-aided design (CAD), solid modeling (Pro, Ug, Solidworks, etc.), system analysis and design methodology have gradually For research and design of mechanical parts. Better realize the synthesis of multiple disciplines, realize the combination of macro and micro, explore new principles and structures, and adopt more dynamic design
And precise design, more effective use of electronic computers, and further development of design theory and methods are important trends in the development of this discipline.
Therefore, in the future, precision machinery will become more and more comprehensive. It is no longer pure mechanical processing. Its combination with high technology will play its role even more. In particular, the digitalization of processing has brought about a qualitative leap in its development. It will become an important science in the future and serve the development of industry.
