High-Flow Sintered PP Filter for Chemical Resistance - China Suppliers & Factory Solutions
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: Sintering in an argon gas protected environment at 1000-1380℃ to eliminate pore cracks and enhance 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 other impurities.
Gradient pore design, large dirt-holding capacity, and low differential pressure.
Can be regenerated by back-washing, offering a high reuse rate.
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 (FAQ)
Q1 What is the primary material of these filters and its chemical compatibility?
The filters are made of Polypropylene (PP). They offer excellent chemical compatibility and are highly resistant to strong acids (such as sulfuric acid and hydrochloric acid), strong alkalis, and various organic solvents like ethanol and acetone.
Q2 What filtration accuracy options are available?
The standard filtration accuracy ranges from 0.1 to 100μm. Customized specifications such as 0.3μm, 1μm, and 5μm can also be provided depending on your application requirements.
Q3 What are the temperature and working pressure limits?
The conventional operating temperature range is -30°C to 100°C, with specialized high-temperature models capable of handling up to 125°C for short periods. The standard working pressure limit is ≤0.4MPa, and high-pressure models can withstand up to 50bar.
Q4 How does the sintering process enhance the product quality?
The manufacturing process features a two-stage sintering method: primary sintering at 700-750℃ to establish a stable porous skeleton structure, followed by vacuum sintering in an argon gas protected environment at 1000-1380℃ to eliminate pore cracks and increase overall structural densification.
Q5 Are these filters safe for food and pharmaceutical applications?
Yes. The production process uses no adhesives. The final products comply with FDA and GMP standards, making them completely safe for food, beverage, and pharmaceutical liquid sterilization and filtration.
Q6 Can these filters be cleaned and reused?
Yes, one of the key advantages of these filters is their long service life. They can be regenerated and cleaned through back-washing, which provides a high reuse rate and lowers operating costs.