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The Basic Things You Need To Know About Plastic Material

por Bernadette Strickland (19-01-2022)

Em resposta a Google

Plastic product can be split into thermosetting and also thermoplastic 2:

1. Thermosetting plastic: describes the plastic that can not be reused. Its molecules eventually into the body structure.

2. Thermoplastic plastic: refers to the plastic that can be recycled, split into crystalline (PBT, PA) as well as amorphous (COMPUTER, PP0). Crystalline plastic refers to the plastic liquid that can become a routine plastic shape when it comes to be strong. The molecules are mainly arranged according to the linear or branched structure.

3. Design plastics refer to making use of mechanical parts, can be utilized for a long period of time above 100 degrees Celsius. The tensile stamina is more than 500kg in one square centimeter. The flexing toughness is more than 2400kg in one square centimeter, and also most of the plastics currently made use of are PPABS PBT PC PPS POM, and so on( 1) PP product: (polypropylene polypropylene).


a. Lighter certain gravity, good fluidity. Colorless, unsavory, odor-free, non-toxic, glossy, tensile strength, excellent heat resistance.

b. Great additional handling performance. Sound insulation as well as chemical security.

c. Affordable price. They are mainly used in woven bags, playthings, cages, residence appliances, pipes, plates, etc. Mostly used for the electrical shell, such as motor back cover, three tubes front and back shell, tiny sun back cover, wind blade and so forth.

Molding conditions:.

A. Mold temperature level: 20 degrees to 40 levels.

B. Drying condition: 80 levels for 1-2 hrs or even more.

C. Product tube temperature level: 170 levels to 220 degrees.

D. Warmth deflection temperature level: 80 levels( 1.8 MPa, 12.7 mm).

E. Softening point:.135 levels or even more.

F. Mold contraction: 0.5%-- 0.7%( 3.3 mm).

G. Tensile return strength:20 -30 Mpa.

H. Typically utilized alteration approaches are enhanced strengthening flame resistant antioxidant, high gloss, etc( 2) abdominal material: (acrylonitrile. Butadiene. Styrene triglyceride). (acrylonitrile-butadiene - styrene. copolymer).


ABS product has great influence resistance, high toughness and strength, low-temperature resistance, warmth resistance, high gloss, easy shade matching and second processing, as well as surface treatment.

They are primarily made use of in automotive, electric, residence devices, construction accounts, and so on.

It is mostly utilized for the front as well as back shells of electric appliances, such as electrical fans, cool followers, water dispensers, heating units, ventilators, bathroom bombs, and various other items, brackets, etc.

Molding conditions:.

1. Drying condition: 80 degrees for greater than 2-4 hours.

2. Product tube temperature level: 190 to 230 levels.

3. Heat deflection temperature: 80 degrees (1.8 MPa, 12.7 mm).

4. General back stress: 8- -15 kg/mm2.

5. Mold and mildew contraction: 0. 5% - 0. 7% (3.3 mm).

6. Typical alteration approaches are boosted strengthening, flame retardant weathering alloy, etc( 3) PBT product: (polybutylene terephthalate) Celanese.


PBT product has high abrasion resistance and strength, strong chemical resistance, great climate resistance, great dimensional stability, excellent electric insulation, better efficiency after support.

Dampness absorption, conveniently disintegrated by warm, is primarily made use of in automotive, electric, residence appliances, adapters, accuracy tools, electronics, etc.

They are mostly utilized for warm immune components: air outlet of the heating system, PTC brace of structure, etc.

Molding problems: (Varies according to the portion of fiber included).

1. Drying condition: 100 ℃ to 140 ℃ for more than 4 hours.

2. Material tube temperature level: 240 to 270 degrees Celsius.

3. Warm deflection temperature level: 210 ℃ to 230 ℃ (1.8 MPa, 12.7 mm).

4. Mold and mildew shrinkage: 0.3% - 0.5% (3.2 mm).

5. Thermal decay temperature: 280 levels (at 260 levels, the product tube can be left for 6 mins. Or else, it will disintegrate as well as weaken).

6. Commonly used alteration methods are enhanced strengthening fire resistant, etc( 4) PC material (polycarbonate).


The highest possible impact toughness, dimensional security, warmth resistance of 130 degrees or even more, with high gloss and transparency, transmittance can get to about 90%, safe-- high processing temperature level, stress and anxiety after molding, wetness absorption, not wear-resistant, fatigue resistance.

Molding problems: (Differs according to fiber enhancement proportion).

1. Mold temperature level: 80 degrees to 100 levels.

2. Drying out problem: 100 ℃ to 120 ℃ for more than 4 hrs.

3. Material tube temperature level: 250 to 300 degrees Celsius.

4. Warmth contortion temperature level: concerning 130 levels.

5. Mold and mildew contraction: 0.5% -0.7%. The fluidity of PC material is greater with the increase of temperature because the temperature adjustment uses up an extra considerable proportion in the molding.

6. Typical alteration methods are enhanced fire resistant antioxidant weathering, etc( 5) material (polyamide polyamide) also referred to as NYL0N nylon.


PA product has abrasion resistance, fatigue resistance, high water absorption price (after reinforcing high strength) exceptional dimensional stability (can be used for high precision mechanical items).

Mostly used in automobile, gears, motors, precision tools, precision electronic SMT, IC ports, etc.

Molding conditions: (Varies according to structure and also fiber enhancement proportion).

1. Mold and mildew temperature: 80 ℃ to 120 ℃.

2. Drying out problem: 120 levels to 140 degrees for greater than 4 hours.

3. Product tube temperature: 260 to 310 levels.

4. Warmth deflection temperature level: 235 degrees.

5. Mold shrinking: 0. 1% - 0.5%.

Devices needs:.

1. Screw: (L:D= 20:1) Criterion three-stage screw with non-return ring. (Optional closed nozzle, diameter 3.0 mm).

2. The product tube will be made of corrosion and also abrasion-resistant alloy material.

3. Both sides of the layout must be enhanced with warm insulation plates to prevent heat on the machine.

4. Make use of a round material network to dissipate warmth evenly for both male and women passes away.

5. Utilize a 0.3 mm to 0.5 mm size pinhole to feed the product right into the product inlet.

6. Use 0.02 mm - 0.04 mm depth, 0.5 mm - 1.0 mm size of the exhaust hole, and also efficient subsequent exhaust.

7. Typically utilized adjustment approaches are boosted wear-resistant, heat-resistant high thickness, etc( 6) POM product: (polyformaldehyde).


High abrasion resistance, exhaustion resistance, exceptional dimensional security (can be made use of to call for dimensional security, abrasion resistance of mechanical items), disintegration has a severe blinding gas, using exhaust should be noted.

Molding problems:.

1. Mold and mildew temperature: 60 degrees to 80 degrees.

2. Drying out conditions: 80 degrees to 100 degrees for more than 2 hours.

3. Product tube temperature level: 170 to 210 levels.

4. Warm deflection temperature level: concerning 90 levels.

5. Mold and mildew contraction price: 0.5% -0.8%.

6. Thermal decomposition temperature: 240 levels (the tube can be left at 240 degrees for 5 mins. Or else, it will break down and also wear away).

( 7) PPS steel material: (polyphenylene sulfide).


Abrasion resistance, exhaustion resistance, high water absorption, flame resistant, superb dimensional stability (can be made use of for high precision mechanical things), and also enhanced performance are much better. There resemble the sound of metal.

Poor crystallinity, poor fluidity, bad toughness, unable to match colors. Easy to rust molds as well as machines, simple to produce burrs.

They are primarily utilized in vehicles, gears, electric motors, precision tools, accuracy digital SMT, IC adapters, and so on.

Molding problems: (vary according to the framework and also fiber addition ratio).

1. Mold and mildew temperature: 100 degrees to 150 levels.

2. Drying out condition: 120- 140 levels for greater than 4 hrs.

3. Product tube temperature level: 270 to 330 degrees Celsius.

4. Thermal deformation temperature: 260 levels( 1.8 MPa, 12.7 mm).

5. Thermal decay temperature level: 400 levels (1.8 MPa, 12.7 mm).

6. Mold and mildew shrinking: 0. 1%-- 0. 4% (3.3 mm).

Devices needs:.

1. Screw: (L:D= 20:1) Requirement three-stage screw with non-return valve. (Optional shut nozzle, 3.0 mm diameter).

2. The product tube shall be constructed from rust as well as abrasion-resistant double alloy material.

3. Thermal barrier have to be enhanced on both sides of the formwork to prevent warm on the machine.

4. Make use of a round product channel to dissipate warmth evenly from male as well as women mold and mildews.

5. Utilize a 0.3 mm to 0.5 mm diameter pinhole to feed the material into the material inlet.

6. Usage 0.02mm-0.04 mm deepness and also 0.5mm-1.0 mm size exhaust holes, and effective succeeding exhaust.

7. Mold and mildew dental caries must be chrome-plated or treated with a corresponding surface area treatment to lower gas corrosion during manufacturing.

More details regarding the upright injection machines: