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Flame retardant PP

Flame retardant PP

Polypropylene (PP for short) is a semi-crystalline thermoplastic. It has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the common polymer materials.


Compared with other general-purpose thermoplastics, PP has the smallest density, excellent mechanical properties, such as tensile strength, compressive strength, surface hardness and elastic modulus, and outstanding stress crack resistance and wear resistance. PP has good heat resistance. PP hardly absorbs water and has excellent chemical stability. Except for oleum and strong oxidants, it is very stable to other media. It has excellent high-frequency electrical properties and is not affected by temperature. It is easy to form and process, and various products can be formed by various methods such as injection molding, extrusion and hollow molding. PP is non-toxic and tasteless, and PP has excellent bending resistance. It can be folded in half repeatedly without damage, which is difficult for any other plastic to do.


The commonly used flame retardant systems of flame retardant PP plastics include bromine flame retardant, halogen flame retardant, halogen free flame retardant, low halogen flame retardant and so on. With the improvement of people's quality of life and the increasing awareness of environmental protection, halogen-free flame-retardant materials with high efficiency, high safety, low toxicity and low smoke will become the development trend in the field of flame-retardant polypropylene.


Application fields of flame-retardant PP: flame-retardant PP plastics are widely used in electronic appliances, home appliances, automobiles, medical care, furniture and other industries.

1. Automobile parts, automobile parts with flame retardant requirements;

2. Electronic appliances, home appliances and other parts with flame retardant requirements;

3. Power supply, heater shell, switch, electric kettle base, terminal block, home appliance shell, microwave oven shell, induction cooker shell, motor base, washing machine parts, electric iron parts, electric oven parts.




Physical Properties

Metric

English

Comments

Specific Gravity

1.00 g/cc

1.00 g/cc

ASTM D792

Maximum Moisture Content

0.010

0.010

Injection Molding

Linear Mold Shrinkage, Flow

0.016 - 0.018 cm/cm
@Thickness 3.20 mm

0.016 - 0.018 in/in
@Thickness 0.126 in

ASTM D955

Melt Flow

14 g/10 min
@Load 2.16 kg,
Temperature 230 °C

14 g/10 min
@Load 4.76 lb,
Temperature 446 °F

ASTM D1238

Mechanical Properties

Metric

English

Comments

Tensile Strength, Yield

32.4 MPa
@Thickness 3.20 mm

4690 psi
@Thickness 0.126 in

50mm/min; ASTM D638

Elongation at Break

70 %
@Thickness 3.20 mm

70 %
@Thickness 0.126 in

50mm/min; ASTM D638

Flexural Yield Strength

38.2 MPa
@Thickness 6.40 mm

5550 psi
@Thickness 0.252 in

10mm/min; ASTM D790

Flexural Modulus

1.77 GPa
@Thickness 6.40 mm

256 ksi
@Thickness 0.252 in

10mm/min; ASTM D790

Izod Impact, Notched

0.490 J/cm
@Thickness 6.40 mm,
Temperature 23.0 °C

0.918 ft-lb/in
@Thickness 0.252 in,
Temperature 73.4 °F




Application range

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