PP plastic head with UL properties by Injection molding 2 - Bost

PP plastic head with UL properties by Injection molding 3 - Bost

PP plastic head with UL properties by Injection molding 5 - Bost

PP plastic head with UL properties by Injection molding 4 - Bost

PP plastic head with UL properties by Injection molding 1 - Bost

PP plastic head with UL properties by Injection molding

Bost’s Injection-Molded PP Plastic Head offers UL-certified safety and corrosion resistance. Crafted via precision injection molding, this PP plastic head ensures UL compliance, durability, and superior performance for industrial applications requiring reliable, corrosion-resistant components.

Colour

Black Colour

Dimension

1-300mm

Manufacture method

CNC /Injection molding

Material

PP plastic head with UL properties by Injection molding

Tolerance

0.05mm

Certification

ISO9001

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Details

Polypropylene (PP)

Commonly known as fold-resistant plastic.

Classification by Crystallinity

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

Properties and Applications of Polypropylene (PP)

1. Properties of Polypropylene

(1) Physical Properties

a. Non-toxic, odorless, tasteless; appears as translucent 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: Ranges from 80,000 to 150,000.

e. Good moldability but high shrinkage rate; thick-walled products are prone to sink marks.

f. Excellent gloss 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, integrated living hinges injection-molded from PP can withstand 70 million folding cycles without showing damage.

d. Dry friction coefficient: Comparable to that of PA6 (inferior to PA6 under oil lubrication).

(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 to polyethylene in cold resistance).

(4) Chemical Stability

a. Chemical resistance: Resistant to most chemical reagents except concentrated sulfuric acid and concentrated nitric acid, which can corrode it.

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

(Note: Chemical stability improves with increased crystallinity, making it ideal for manufacturing various chemical pipes and fittings with excellent corrosion resistance.)

(5) Electrical Properties

a. High-frequency insulation performance: Excellent (almost non-hygroscopic, so 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. Thermo-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, including:

a. Blown film.

b. Cast film (CPP).

c. Biaxially oriented film (BOPP).

(2) Injection-molded Products

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

(3) Extruded Products

Can be processed 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) Other Applications

Low-foaming PP: Calcium plastic boards, synthetic wood, laminates, synthetic paper. High-foaming PP: Can be used as structural foam materials.

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

Polypropylene can be modified through filling, reinforcement, blending, copolymerization, and cross-linking, with the following modification methods and effects:

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

Materials and Descriptions

Product Category	Product Description	Applications
High-transparency PP	High transparency, general 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 household appliances (rice cooker components, coffee makers, bread machines, electric kettles, microwave oven containers); medium-strength structural parts (pump housings, water pump impellers for ultrasonic/thermal spin welding), electrical skeletons, foot pedals, roller skates
Reinforced PP	30% barium sulfate (BaSO₄) reinforced, high gloss	Same as above
Reinforced PP	20% talc reinforced, high rigidity	Same as above
Reinforced PP	30% 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 bead (GS) reinforced, high surface hardness, scratch resistance	Same as above
Reinforced PP	30% glass bead (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, environmentally friendly, unfilled	Front and rear shells of heaters, switch parts, capacitor cases, Christmas trees, lamp winding skeletons, electronic and electrical components, outdoor lighting, areas requiring high heat resistance
Flame-retardant PP	Flame-retardant V-0, environmentally friendly, unfilled, toughened	Same as above
Flame-retardant PP	Flame-retardant V-0, environmentally 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 electrical components 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 + thermo-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 + thermo-oxidative aging resistant	Same as above
Weather-resistant PP	Filled, UV-resistant + thermo-oxidative aging resistant	Same as above
Weather-resistant PP	Antistatic, unfilled, UV-resistant + thermo-oxidative aging resistant	Same as above
Weather-resistant PP	Filled, UV-resistant + thermo-oxidative aging resistant, light-shielding grade	Same as above

Notes

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