Mechanical and environmental performance testing parameters of PPS woven mesh

2026-03-27 15:53

Mechanical and environmental performance testing parameters of PPS woven mesh

I. Tensile performance testing parameters

testing items	Typical parameter range	Test standard / Description
Longitudinal tensile breaking strength	800–1200 N/5cm	According to GB/T 3923.1 or ASTM D4964, the clamping width is 5cm, and the tensile speed is 200mm/min
Zonal tensile breaking strength	900–1300 N/5cm	The weft yarn diameter is thicker, and the weft strength is slightly higher than the warp strength
Elongation at break	8%–15%	Pure PPS monofilament has high brittleness and a lower elongation rate compared to nylon/polyester mesh
tensile modulus	2.5–3.5 GPa	The modulus attenuation is small under high temperature, and it still retains about 70% of the room temperature modulus at 150℃
Seam/node strength	≥70% Original net strong force	The four-piece integrated braided knot is strong, and the knot strength is close to the body of the net
Tearing strength (tongue method)	warp：150–220 N；zonal：180–250 N	According to GB/T 3917.2, it reflects the tear resistance and propagation resistance of the net surface

II. Flexibility and Toughness Testing Parameters

testing items	Typical parameter range	Test standard / Description
bending stiffness	0.5–1.2 mN·m	According to GB/T 18318, it reflects the softness of the net surface and has good rollability
crease recovery rate	≥85%	There are no permanent creases after repeated folding, and it exhibits good fatigue resistance
Flex resistance count	≥10,000	Bend back and forth at 180° at room temperature, with no fracture or obvious cracks
Low temperature flexibility (-40℃)	No brittle fracture	After being placed in an environment at -40℃ for 2 hours and then bent, the mesh surface remains uncracked and unbroken

III. Performance testing parameters under high temperature and high pressure

1. High-temperature mechanical properties

testing items	Typical parameters (150℃)	Typical parameters (180℃)	Instructions
Tensile strength retention	≥80%	≥65%	180℃ is the upper limit for long-term use, with controllable strength attenuation
Change in elongation at break	±2%	±3%	It maintains dimensional stability under high temperatures with no noticeable creep
Heat shrinkage rate (180℃, 30min)	≤0.5% (meridional); ≤0.4% (zonal)	-	Excellent thermal stability, suitable for high-temperature filtration conditions

2. High-pressure environmental performance

检测项目	典型参数范围	说明
hydrostatic pressure resistance	≥0.5 MPa	The net surface is free of leakage and deformation under a water pressure of 0.5 MPa
burst pressure	≥1.2 MPa	The net surface can withstand instantaneous high-pressure impact without cracking
Change rate of air permeability/water permeability under high pressure	≤5%	Under a pressure of 0.3 MPa, the change in air/water permeability flux is minimal compared to that under normal pressure
Creep rate (150℃, 0.2 MPa, 24h)	≤1.0%	Long-term service under high temperature and high pressure, with stable dimensions and mechanical properties

IV. Detection Suggestions and Application Tips

Test standards: For tensile strength/flexibility, refer to the mechanical testing standards for textiles (GB/T 3923, GB/T 3917, GB/T 18318); for high-temperature and high-pressure performance, refer to the standards for chemical filtration materials (such as HG/T 4102).

Performance optimization: If toughness is required, glass fiber reinforced PPS monofilament can be selected; if higher temperature resistance is needed, modified PPS (such as glass fiber/carbon fiber filled) can be used, and the long-term use temperature can be increased to 200℃.

Scenario adaptability: This net can stably maintain its filtration and mechanical properties in high-temperature and high-pressure corrosive environments within 180℃ and 0.3 MPa, making it suitable for harsh working conditions such as chemical and flue gas filtration.

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