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A specialized supplier of plastic raw materials
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Contacts:Elena
Phone:+86-769-88029572
Skype:china.elena22
E-mail:china_elena@163.com
Address:No. 138, First Sutong Road, Dajingjiu Plastic Market, Changping Town, Dongguan City, Guangdong Province, China
Polymer (polymer), also called the giant molecule or macromolecule (macromolecules), also commonly known as the [plastic] (plastics) or resin (resin). The so-called [plastic], in fact, it is [a synthetic resin] one shape with natural resin [pine resin] is similar, but the strength and chemically synthesized, and called [plastic].
POM
POM (English: polyformaldehyde) thermoplastic crystalline polymer. Known as the "super steel" or "steel race."
nature Combustible white crystalline powder, having the smell of formaldehyde. Slowly soluble in cold water, dissolve faster in hot water. 20 ℃ water solubility of 0.24g / 100cm3H2O. Insoluble in ethanol, ethyl ether. Dissolved in caustic soda, potash solution.
advantage 1, high mechanical strength and rigidity; 2, the highest fatigue strength; 3, environmental resistance, resistance to organic solvents;
4, strong resistance to repeated impact; 5, wide temperature range (-40 ℃ ~ 120 ℃); 6, good electrical properties;
7, good recovery; 8, with self-lubricating, wear well; 9, excellent dimensional stability.
Shortcoming 1, if the process for a long time at a high temperature easily from the thermal decomposition; 2, no self-extinguishing; 3, poor acid; 4, forming a large shrinkage.
use Electronic appliances: washing machines, juice machine parts, timer component
Car: handlebar parts, electric windows parts
Industrial parts: mechanical parts, gears, handles, toys, screw
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PC
Polycarbonate (English name Polycar bonate) is a polymer molecular chain containing carbonate groups.
nature Colorless, transparent, heat, shock, fire BI level, in the ordinary use of temperature have good mechanical properties. Poor wear resistance. Some polycarbonate for easy to wear devices need to use special surface treatment.
classification
Anti-static PC, conductive PC, fire and defibrillators PC, UV weathering PC, food-grade PC, chemical resistance PC.
advantage 1, high strength and elastic modulus, high impact strength, wide temperature range; 2, high transparency and freedom of dyeing; 3, forming low shrinkage, good dimensional stability; 4, good fatigue resistance; 5, weather good; 6, excellent electrical properties; 7, tasteless and odorless harmless meet health safety.
Shortcoming 1, UV impatience, intolerance alkali; 2, hydrolysis stability high enough to notch sensitivity; 3, anti-organic chemistry resistance, scratch resistance is poor, long-term exposure to ultraviolet light will be yellow.
use Glazing: large shade, protective glass, optical instruments
Machinery industry: internal gear, worm gear, bushings, guide regulations, refrigerator shelf
Electrical Equipment Industry: insulated connectors, coil frame, seat tube, insulation sleeve
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PMMA
Polymethyl methacrylate (English name: Polymethyl Methacrylate), also known as acrylic or plexiglass to do, more gum called Aga force in Hong Kong.
nature Ingot plate number average molecular weight is generally 2.2 × 104, a relative density of 1.19 to 1.20, a refractive index of 1.482 ~ 1.521, the moisture absorption of 0.5% or less, a glass transition temperature of 105 ℃. With high transparency, low price, easy machining, etc. advantage, usually glass alternative materials frequently used.
advantage 1, high optical transparency; 2, good weather resistance; 3, rigidity; 4, easy to dye.
Shortcoming Crisp and easy to crack, low surface hardness, scratch easily and lose luster, but minor wounds, scratches are available to remove polishing paste.
use Lampshades, windows, signage, optical lenses, hard contact lenses, auto parts
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PA46
Polyhexamethylene adipamide (English name: Stanyl PA46)
nature A polyamide resin melting point and high crystallinity have. High crystallinity (about 70%), and the crystallization speed, and therefore a higher melting point (295 ℃), heat distortion temperature is high, long-term use temperature (CUT 5000hours) up to 163 ℃.
advantage 1, high temperature performance, long-term use under the hood, lead-free solder processing; 2, excellent chemical resistance, extended component life; 3, low creep, excellent fatigue properties and low wear resistance; 4, excellent mechanical properties, reducing wall thickness, thereby reducing the weight and price components; 5 high melting point and high crystallinity.
Shortcoming 1, molding shrinkage rate is higher; 2, high moisture absorption, after absorbing size becomes; 3, is sensitive to temperature, at a temperature of 350 ℃ can seriously degrade black.
use Electrical and electronic applications: SMD components, connectors, circuit breakers, wound components, electric motor parts and electrical components.
Airborne component applications: gears, bearings and bearing cover
Automotive applications: sensors and connectors
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PA66/PA6
The polyamide resin (the English name for polyamide), referred to as the PA. Commonly known as nylon (Nylon). The main varieties of nylon 6 and nylon 66, nylon 66, nylon 6 is harder than l2%; followed by nylon 11, nylon 12, nylon 610, nylon 612, nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13, new varieties nylon 6I, nylon 9T and special nylon MXD6.
nature Translucent or opaque milky white bag with yellow granular or crystalline polymers. Density (g / cm3) 1.10-1.14; Tensile strength (MPa) 60. 0-80.0; Rockwell hardness 118; melting point 252 ℃; brittle temperature -30 ℃; thermal decomposition temperature greater than 350 ℃ ; continuous heat 80-120 ℃; equilibrium water absorption of 2.5%; dielectric constant of 1.63.
advantage 1, with high tensile strength; 2, resistant tough, impact resistance privileged; 3, self-lubrication, abrasion resistance, excellent chemical resistance; 4, good low temperature properties; 5, self-extinguishing;
Shortcoming 1, water absorption, and thus the size of less stable; 2, the viscosity is very sensitive to temperature changes; 3, resistance to acid and other chlorinating agent is weak.
use Electronics: connectors, reel, timer, cover circuit breakers, switches shell seat
Car: cooling fans, door handles, fuel tank cap, air intake grille, radiator cover, lamp holder
Industrial parts: chair seat, bicycle transportation box, skates base, textile shuttle, pedal, slip transmission
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PBT
Poly (polybutylene terephthalate) terephthalate, the English name
nature Milky white translucent to opaque, crystalline thermoplastic polyester. Has high heat resistance, toughness, fatigue resistance, self-lubricating, low friction coefficient, weather resistance, low water absorption, only 0.1% in wet conditions remain a variety of properties.
advantage 1, stability and mechanical properties of tensile strength and tensile modulus similar to nylon; 2, the friction coefficient of a self-lubrication; 3, low water absorption; 4, excellent electrical properties; 5, good dimensional stability; 6, Drug chemical resistance, excellent oil resistance.
Shortcoming 1, susceptible to erosion of halogenated hydrocarbons, poor resistance to hydrolysis; 2, Tg (30 ℃) is low, at a load of H.D.T. is 60 ℃; 3, poor impact strength, glass fiber reinforced generally used for the FR-PBT.
use Electronics: No fuse breaker, solenoid switch, Chi back transformers, appliances handles, connectors, housing and so on;
Automotive: door handles, bumper, distributor plate covers, fenders, wire retaining shell, wheel cover, etc.;
Industrial parts: OA fan, keyboard, fishing reel, replacement parts and lampshades.
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PET
Polyethylene terephthalate (English name: polyethylene terephthalate)
nature Milky white or pale yellow, highly crystalline polymers, the surface smooth and shiny. Crystalline thermoplastic plastic, a clear melting point of 245 ~ 260 ℃, the mechanical properties and excellent abrasion, wear performance at room temperature. But because of low Tg so poor thermal and mechanical properties, glass is generally added to improve heat resistance and mechanical properties, such called FR-PET.
advantage 1, dimensional stability; 2, excellent mechanical properties; 3, creep is small; 4, good electrical properties; 5, excellent weather resistance; 6, anti-organic flux, oil and weak acid; 7, gas resistance, water resistance; 8, self-extinguishing.
Shortcoming 1, directional mechanical properties, high flowability; 2, slow crystallization; 3, dried and demanding processing conditions.
use Electronics: breakers, ballasts, spools, hair dryer vent, spools lampshade
Car: electrical equipment components, fenders, brake knob
Industrial parts: the cooling fan handle
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PPS
Polyphenylene sulfide (English name: Polyphenylene sulfide)
nature Undrawn fibers having a large area amorphous (crystallinity of about 5%), crystallization exotherm occurs at 125 ℃, the glass transition temperature of 150 ℃; m.p. 281 ℃. Drawn fiber of partially crystallized during stretching, (30% increase), at a temperature of 130-230 ℃ as the stretched fiber is heat-treated, the degree of crystallinity may be increased to 60-80%.
advantage 1, heat; 2, insoluble; 3, chemical resistance; 4, flame resistance.
Shortcoming 1, the price is too high, is upset in high-temperature materials, but much higher than the general-purpose engineering plastics; 2, poor toughness, brittle; viscosity instability; 3, easy to produce burrs when molded.
use Electric industry: connectors, bobbins
Industrial supplies: case, cleaning tools, computer parts and OA
Automotive: a variety of sensors, carburetor, electronic control components
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PPO
Polyphenylene ether (English name: Polyphenylene Oxide)
nature White particles. General performance is good, can be used in 120 ℃ steam, electrical insulation, water is small, but there is tendency to stress cracking. Glass transition temperature 211 ℃, melting point 268 ℃, heated to 330 ℃ a tendency to break, heat distortion temperature up to 190 ℃.
advantage 1. Non-toxic, transparent, relative density, excellent in mechanical strength, resistance to stress relaxation, creep resistance, heat resistance, water resistance and water vapor resistance, dimensional stability. 2. In a wide temperature range in the frequency-dependent electrical properties, not hydrolysis, mold shrinkage is small, there is self-extinguishing flame. 3. rigidity, high heat resistance, flame retardant, high strength and excellent electrical performance advantage. 4. wear-resistant, non-toxic, resistant to pollution. 4. The dielectric constant and dielectric loss in engineering plastics is one of the smallest species.
Shortcoming 1, the resistance to inorganic acids, alkalis, resistant to aromatic hydrocarbons, halogenated hydrocarbons, oils and other poor performance; 2, easy swelling or stress cracking; 3, melt flow is poor, molding difficult.
use Electronics: coil core, microwave insulation, shielding sleeve, high-frequency printed circuit boards, high-voltage electronic components, televisions, computers, fax machines, copiers shell.
Automotive: Instrument panels, window frames, shock absorbers, pumps and filters.
Machinery Industry: gears, bearings, pump impeller, blower impeller tablets.
Chemical industry: pipes, valves, filters and submersible pumps and other corrosion-resistant parts.
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PPE
Modified polyphenylene ether (Modified Polyphenylene Oxide), referred MPPE (Modified Polypheylene ether). On their habit and modified polyphenylene ether polymer blends are referred to as PPE (USA called) or PPO (Japan called), was also adopted through commonly known method: hereinafter referred to as PPE.
nature The glass transition temperature as high as 211 ℃, m.p. 268 ℃. PPE oxygen index of 29, self-extinguishing materials, and high impact polystyrene oxygen index of 17 flammable material, the two are combined with a moderate degree of flammability, flame retardant grade manufactured PPE is not necessary adding halogen flame retardants, phosphorus-based flame retardant can be added to UL94 standards, reduce environmental pollution.
advantage 1. Low specific gravity; 2 good flame retardant and self-extinguishing properties; 3, low water absorption, dimensionally stable molding; 4. use of a wide temperature range (-40 to 160); 5. ultra-rigid, impact resistance and resistance to fatigue sex; 6 low mold shrinkage for precision parts;.. 7 releasability and excellent fluidity, forming a wide temperature range; 8 excellent insulation properties, low dielectric constant and low dielectric loss tangent.
Shortcoming Light poor, prolonged use color in the sun or fluorescent light, the color yellow, because ultraviolet make aromatic ether chain binding split due.
use Electronics: TVs, computers, air conditioners, radios, printers, scanners, mouse, keyboard, high-voltage electronic components.
Automotive: Instrument panels, window frames, shock absorbers, pumps and filters.
Machinery Industry: gears, bearings, pump impeller, blower impeller tablets.
Chemical industry: pipes, valves, filters and submersible pumps and other corrosion-resistant parts.
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