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Black PP injection molding plastic holder

Bost Black PP Injection-Molded Wear-Resistant Holder offers superior corrosion resistance and durability. This universal holder is crafted from high-quality polypropylene, ensuring long-lasting performance in demanding environments. Ideal for versatile industrial and commercial applications.

Colour

Black Colour

Dimension

1-300mm

Material

Black PP injection molding plastic holder

Tolerance

0.05mm

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Details

Polypropylene (PP)

Commonly known as foldable plastic.

Classification by Crystallinity

Isotactic PP: Crystallinity up to 95% or higher, molecular weight ranging from 80,000 to 150,000.
Atactic PP: Amorphous at room temperature, molecular weight ranging from 3,000 to 10,000, with limited applications.

Properties and Applications of Polypropylene (PP)

1. Properties of Polypropylene

(1) Physical Properties

a. Non-toxic, odorless, tasteless, semi-transparent or transparent pellets (milky white in powder form).

b. Density: 0.90–0.91 g/cm³.

c. Water stability: Water absorption rate is only 0.01% after 24 hours of immersion in water.

d. Molecular weight: 80,000–150,000.

e. Good moldability, high shrinkage rate, and thick-walled products tend to sink.

f. High glossiness and easy to color.

(2) Mechanical Properties

a. High crystallinity and regular structure: Higher strength, hardness and elasticity than HDPE (High-Density Polyethylene).

b. At room and low temperatures: High structural regularity results in poor impact strength (impact strength increases with the rise of molecular weight).

c. Flexural fatigue resistance: For example, one-piece living hinges injection-molded with PP can withstand 70 million folding cycles without damage.

d. Dry friction coefficient: Comparable to PA6 (Nylon 6) under dry conditions (inferior to PA6 when oil-lubricated).

(3) Thermal Properties

a. Melting point: 164–170℃.

b. Heat resistance: Can be sterilized at temperatures above 100℃, and does not deform at 150℃ under no external force.

c. Brittleness temperature: -35℃ (inferior cold resistance compared with polyethylene).

(4) Chemical Stability

a. Chemical resistance: Resistant to most chemical reagents, except being corroded by concentrated sulfuric acid and concentrated nitric acid.

b. Softening and swelling: Low-molecular-weight aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons can cause PP to soften and swell.

(Chemical stability improves with the increase of crystallinity, making it suitable for manufacturing various chemical pipes and fittings with excellent corrosion resistance.)

(5) Electrical Properties

a. High-frequency insulation: Excellent (almost non-hygroscopic, insulation performance is not affected by humidity).

b. Dielectric constant: 2.0–2.5 (suitable for electrical insulation products used under heating conditions).

c. Dielectric strength: 40 kV/mm.

d. Arc resistance: 130 s (high static electricity, prone to aging when in contact with copper).

(6) Weather Resistance

a. Photo-aging: PP is sensitive to ultraviolet (UV) rays.

b. Thermal-oxidative aging: Heat and oxygen will accelerate the aging of PP.

2. Applications of Polypropylene

(1) Film Products

PP film products are transparent and glossy, with low permeability to water vapor and air:

a. Blown film.

b. Cast film (CPP).

c. Biaxially oriented film (BOPP).

(2) Injection-molded Products

Used in engineering parts for automotive, electrical, machinery, instrumentation, radio, textile and national defense industries, as well as daily necessities, turnover boxes, medical and health equipment, and building materials.

(3) Extruded Products

Can be made into pipes, profiles, monofilaments, fishing ropes, strapping bands, binding ropes, woven bags, fibers, composite coatings, sheets, plates, etc. Blow-molded hollow products include various small containers.

(4) Others

Low-foaming PP, calcium plastic boards, synthetic wood, laminates, synthetic paper, and high-foaming PP can be used as structural foams.

Modification of Isotactic PP (Molecular Weight 80,000–150,000)

Polypropylene can be modified through filling, reinforcement, blending, copolymerization and crosslinking.

Adding fillers such as calcium carbonate, talcum powder and inorganic minerals can improve rigidity, hardness, heat resistance and dimensional stability.
Adding glass fiber, asbestos fiber, mica, glass beads, etc., can improve tensile strength, creep resistance and low-temperature impact resistance.
Adding elastomers and rubbers can enhance impact performance and transparency.
Adding carbon fiber (CF) can improve strength, especially flexural modulus.

Materials and Descriptions

Product	Product Description	Applications
High-transparency PP	High transparency, standard impact resistance	Various transparent bottles
High-transparency PP	High transparency, high impact resistance	Disposable syringes, food containers
High-transparency PP	High transparency, high impact resistance	CD cases, display windows
Reinforced PP	20% barium sulfate (BaSO₄) reinforced, high gloss	Appearance parts of small home appliances: rice cooker components, coffee machines, bread makers, electric kettles, microwave oven containers; medium-strength structural parts, pump housings, water pump impellers (ultrasonic and hot spin welding), electrical skeletons, foot pedals, roller skates
Reinforced PP	30% barium sulfate (BaSO₄) reinforced, high gloss	Same as above
Reinforced PP	20% talcum powder (Talc) reinforced, high rigidity	Same as above
Reinforced PP	30% talcum powder (Talc) reinforced, high rigidity	Same as above
Reinforced PP	20% calcium carbonate (CaCO₃) reinforced, high rigidity	Same as above
Reinforced PP	30% calcium carbonate (CaCO₃) reinforced, high rigidity	Same as above
Reinforced PP	20% glass beads (GS) reinforced, high surface hardness, scratch resistance	Same as above
Reinforced PP	30% glass beads (GS) reinforced, high surface hardness, scratch resistance	Same as above
Reinforced PP	10% glass fiber reinforced, high rigidity	Same as above
Reinforced PP	20% glass fiber reinforced, high rigidity, toughened	Same as above
Reinforced PP	30% glass fiber reinforced, high rigidity, toughened, cold-resistant	Same as above
Flame-retardant PP	Flame-retardant V-0, eco-friendly, unfilled	Front and rear shells of heaters, switch parts, capacitor cases, Christmas trees, lamp winding skeletons, electronic and electrical components, outdoor lighting, areas with high temperature resistance requirements
Flame-retardant PP	Flame-retardant V-0, eco-friendly, unfilled, toughened	Same as above
Flame-retardant PP	Flame-retardant V-0, eco-friendly, filled	Same as above
Flame-retardant PP	UV-resistant, flame-retardant V-0	Same as above
Flame-retardant PP	High heat resistance (RTI140℃), halogen-free and phosphorus-free flame-retardant, reinforced	Same as above
Low-temperature impact-resistant PP	Withstands unconventional impact at -10℃, non-flame-retardant	Roller skate parts, handle parts, flame-retardant parts of electrical appliances in high-latitude areas, toilet water tanks
Low-temperature impact-resistant PP	Withstands unconventional impact at -20℃, non-flame-retardant	Same as above
Low-temperature impact-resistant PP	Withstands unconventional impact at -30℃, non-flame-retardant	Same as above
Low-temperature impact-resistant PP	Withstands unconventional impact at -20℃, flame-retardant	Same as above
Weather-resistant PP	Outdoor UV-resistant + thermal-oxidative aging resistant, high and low temperature impact resistant	Radomes, air conditioner outdoor unit casings, outdoor billboards, lighting components, indoor and outdoor lamp accessories
Weather-resistant PP	Unfilled, UV-resistant + thermal-oxidative aging resistant	Same as above
Weather-resistant PP	Filled, UV-resistant + thermal-oxidative aging resistant	Same as above
Weather-resistant PP	Antistatic, unfilled, UV-resistant + thermal-oxidative aging resistant	Same as above
Weather-resistant PP	Filled, UV-resistant + thermal-oxidative aging resistant, light-shielding grade	Same as above

Notes

For other specifications, please contact Aote Technology Development Center.
Except for the colors specified, all products can be colored according to requirements.
For glass fiber reinforced grades, long fibers or chopped fibers can be selected as required.