High-Flow Sintered PP Filter for Chemical Resistance - China Suppliers and Factory
Product Parameter Table
| Parameter Category | Detailed Index |
|---|---|
| Material | Polypropylene (PP) |
| Filtration Accuracy | 0.1-100μm (can be customized 0.3μm, 1μm, 5μm, etc.) |
| Outer/Inner Diameter | Outer Diameter: 35-150mm (commonly used 60-115mm); Inner Diameter: 28-30mm |
| Length | 5-60 inches (approx. 130-2000mm) |
| Temperature Range | -30°C to 100°C (conventional); some high-temperature models up to 125°C (short-term) |
| Working Pressure | ≤0.4MPa (conventional); high pressure models up to 50bar |
| Porosity | 30%-60% |
| Chemical compatibility | Resistant to strong acids (such as sulfuric acid, hydrochloric acid), strong alkalis, organic solvents (ethanol, acetone, etc.) |
Production Process
Mix polypropylene powder with additives in proportion to ensure material homogeneity.
Heating and melting at about 150℃, and pressing into the initial embryo through the mold.
Use circulating water to cool indirectly and solidify the structure quickly.
- Primary sintering: sintering at 700-750℃ to form a porous skeleton structure.
- Vacuum sintering: in the argon gas protected environment at 1000-1380℃ to eliminate pore cracks and enhance the densification.
Cutting, polishing, testing (e.g. bubble point test, integrity test).
Product Advantages
Acid and alkali resistance, organic solvents, suitable for corrosive media filtration.
The minimum precision can be up to 0.1μm, effectively retaining microorganisms, colloids, and more.
Gradient pore design, large dirt-holding capacity, and low differential pressure.
Can be regenerated by back-washing, ensuring a high reuse rate and lower operating costs.
No adhesive, in line with FDA and GMP standards, suitable for food and pharmaceutical industries.
Application Fields
| Fields | Specific Application Scenes |
|---|---|
| Water treatment | Ultrapure water preparation, RO pre-filtration, drinking water purification |
| Pharmaceutical industry | Pharmaceutical liquid sterilization filtration, injection water treatment |
| Chemical industry | Acid and alkali liquid filtration, organic solvent purification (such as methanol, ethanol) |
| Food & Beverage | Wine clarification, fruit juice filtration, edible oil purification |
| Electronics | Chip manufacturing ultrapure water filtration, plating solution purification |
| Environmental Protection | Industrial waste water treatment, oil and gas separation |
Frequently Asked Questions
A: The filtration accuracy ranges from 0.1μm to 100μm. Custom specifications such as 0.3μm, 1μm, and 5μm are also available to meet specific industrial requirements.
A: The standard operating temperature range is -30°C to 100°C, with specialized models capable of handling up to 125°C short-term. The conventional working pressure limit is ≤0.4MPa, while high-pressure models can withstand up to 50bar.
A: Yes, they feature excellent chemical compatibility and are highly resistant to strong acids (such as sulfuric and hydrochloric acid), strong alkalis, and various organic solvents like ethanol and acetone.
A: The porous structure is created using a dual-stage sintering process. Primary sintering is conducted at 700-750°C to form the porous skeleton, followed by vacuum sintering in an argon-protected environment at 1000-1380°C to eliminate cracks and enhance structural density.
A: Absolutely. They are manufactured without any chemical adhesives, ensuring they comply fully with FDA and GMP standards, making them ideal for pharmaceutical liquid sterilization and food/beverage clarification.
A: Yes, the filters are designed for a long service life and can be regenerated and reused multiple times through standard back-washing procedures.