40% glass fiber reinforced and toughed PPS
Product features
This kind of product is one of the high performance and toughening polyphenylene sulfide series products manufactured by our company. It is made by mixing glass fiber, toughening agent and related additives through twin screw extruder. It has the characteristics of chemical corrosion resistance, good mechanical properties, impact resistance, high temperature resistance and flame retardant.
Product applications
Because of the comprehensive performance of this product, it is used in the aerospace industry to produce all kinds of high-performance requirements devices for high temperature and insulation. Such as the production of corrosion resistant valve and insulation devices in the chemical industry, electronics industry, the production of the precision electrical connector, high strength shell, high temperature resistance contactor,etc. In the electrical industry, It is made to produce harsh electric machine parts, terminals, switches. And in the machinery industry, making shaft sleeve and piston ring for high temperature and high size requirements.
Product performance
Test Items |
Unit |
Performance |
Test standard |
Density | g/cm3 | 1.64 | GB/T 1033 |
Molding Shrinkage | % | 0.25/0.75 | GB/T 15585 |
Water Absorption | % | 0.02 | GB/T 2914 |
Tensile Strength | MPa | 145 | GB/T 1040 |
Elongation at break | % | 1.65 | GB/T 1040 |
Bending Strength | MPa | 230 | GB/T 9341 |
Flexural Modulus | MPa | 1.2×104 | GB/T 9341 |
Notched izod impact strength | KJ/m2 | 16 | GB/T 1843 |
Melting Point | ℃ | 278 | GB/T 4608 |
Heat Distortion Temperature/ HDT（1.8Mpa） | ℃ | 255 | GB/T 1634 |
Volume Resistivity ×1015 | Ω.m | 1 | GB/T 1410 |
Surface Resistivity ×1014 | Ω | 2 | GB/T 1410 |
Permittivity 1MHz | / | 4 | GB/T 1409 |
Dielectric Strength | KV/mm | 16 | GB/T 1408 |
Flame Retardant | / | V-0 | GB/T UL94 |
Conditions:
1. Material drying process
Temperature: 130 ~ 150 ℃ *4 hours
Note: if any metal insert molding products, need to preheat insert: metal insert preheating temperature: 130 ~ 140 ℃, time: constant temperature for 1 hour
2. Injection molding process
Mold temperature: 120 ~ 150 ℃ (can be set according to the product structure situation)
Cylinder temperature:
The front: 290 ~ 300 ℃
In the middle: 300 ~ 310 ℃
The last period: 300 ~ 320 ℃
Nozzle: 300 ~ 310 ℃
Injection pressure: 80~150MPa (70-95%)
Injection speed: medium speed ~ high speed.
Pressure holding pressure: 30-70MPa (20-45%)
Meter: the residual amount is set 5-10mm.
Loose back: 3-5 mm
Screw rotation speed: 50-120rpm.
Back pressure: 0.2-5MPa.
Injection molding time: according to the size of the parts, when the mold is filled with mold, and the surface is basically cooling is good.
3. Post-processing technology: determined by the size of the parts.
Processing temperature: 160 ~ 180 ℃, the processing time: 4 ~ 8 hours
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