Complete analysis of PPS (polyphenylene sulfide) material

I Basic Information

PPS, fully known as Polyphenylene Sulfide, is a high-performance specialty engineering plastic. Due to its excellent comprehensive performance, it occupies an important application position in the fields of electronics and electrical appliances, automotive industry, chemical corrosion prevention, and so on.

II. Core Physical Properties

The physical parameters of PPS lay the foundation for its wide temperature range and high stability. The specific key indicators are as follows:

III. Mechanical performance parameters

PPS exhibits excellent mechanical properties, particularly maintaining high strength and stiffness even under high-temperature conditions. The core mechanical parameters are as follows:

IV. Chemical resistance

PPS exhibits strong resistance to most chemical substances, with limitations only under specific conditions, specifically manifested as:

1. Acid resistance

It can stably withstand weak acid corrosion;

It has partial resistance to strong acids;

Not resistant to oxidizing acids, which can cause significant damage to it.

2. Alkali resistance

It can withstand corrosion from both weak and strong alkalis, and remains chemically stable in alkaline environments.

3. Solvent resistance

It is completely tolerant to alcohol and saturated hydrocarbons;

It only has partial resistance to aromatic hydrocarbons, oils, and fatty substances, and long-term immersion may lead to phenomena such as swelling.

V. Flame retardant and combustion characteristics

PPS is a natural flame-retardant material with excellent self-extinguishing properties:

It can self-extinguish during combustion without sustained combustion;

The flame burns brightly, accompanied by the characteristic odor of rotten eggs, which is a typical sign of PPS combustion.

VI. Other key performance indicators

1. Weather resistance

PPS is not resistant to ultraviolet radiation and has poor weather resistance, making it unsuitable for direct long-term exposure outdoors. Moreover, native PPS cannot be colored. If outdoor applications are required, specialized UV-resistant and toughening additives need to be added to enhance flexibility, resistance to brittle fracture, and weather resistance.

VII. Performance parameters of PPS woven mesh (warp 0.28mm, weft 0.30mm, four-harness weaving)

1. Network density and structure

Weaving method: Four-harness plain weave / twill weave (a commonly used industrial structure, featuring uniform mesh and stable structure)

Wire diameter specifications: warp 0.28 mm, weft 0.30 mm

Number of threads / Density reference:

Typical density: approximately 30–40 meshes per inch (adjustable according to the process, with higher meshes indicating smaller mesh openings)

Porosity: approximately 35%–55% (varies with mesh size, with higher porosity for lower mesh sizes)

2. Air permeability performance

Air permeability: approximately 200–800 L/(m²·s) (@200 Pa pressure difference, varying with mesh count / porosity)

Features: Uniform perforation, low airflow resistance, stable air permeability; no significant degradation in air permeability under high temperature/corrosive environments, suitable for high temperature flue gas filtration, ventilation and corrosion prevention scenarios.

3. Water permeability and filtration performance

Permeability flux: approximately 5–30 m³/(m²·h) (@0.1 MPa water pressure, positively correlated with mesh size)

Interception accuracy: approximately 50–200 μm (corresponding to a 30–40 mesh screen, capable of intercepting solid particles and suspended matter)

Features:

Low water absorption rate + chemical corrosion resistance, stable water permeability 

and resistance to clogging, suitable for filtration of chemical wastewater and high-temperature liquids;

The four-ply warp-knitted structure enhances the mesh strength, making it resistant to water flow impact and less prone to deformation;

Different filtration accuracies can be achieved by adjusting the mesh size, making it suitable for scenarios such as solid-liquid separation and gas-liquid separation.

VIII. Summary of application value

PPS possesses multiple advantages such as high temperature resistance, corrosion resistance, flame retardancy, low water absorption, and moderate mechanical strength. Although it has limitations such as poor UV resistance, high brittleness in pure form, and inability to be inherently colored, these shortcomings can be effectively compensated for through modification.

The mesh material made of PPS monofilament (warp 0.28mm, weft 0.30mm, four-piece integrated weaving) not only retains the core performance of PPS, but also additionally possesses controllable air permeability, stable water filtration capacity, and high structural strength. It is an ideal material for high-end applications such as electronics and electrical equipment, automotive precision filtration, chemical corrosion-resistant filters, and high-temperature flue gas filtration, especially for scenarios with strict requirements on temperature, corrosivity, and filtration accuracy.