PPS GF 40 PLASTIC AND MACHINING TIPS
PPS GF 40 is 40% glass fiber reinforced. PPS GF 40 (Polyphenylene sulfide) possesses several remarkable properties that make it one of the best choices for use in industries.
PPS GF 40 shows the following set of properties:
- Excellent rigidity and high strength at high temperature
- High thermal stability
- High chemical stability
- High dimensional stability
- Good electrical and thermal insulation
- Built-in flame resistance
- Low moisture absorption
- Applicable for lead-free repairing
- Excellent creep resistance
- Self- extinguishing
- High continuous service temperature
|Elastic Modulus||13-19 GPa|
|Tensile Strength||150-200 MPa|
|Coefficient of Thermal Expansion||1.5 x 1/K|
|Melting Point||275 -29C|
|Specific Heat Capacity||1180-1500 J/kg.K|
|Thermal Conductivity||0.3 W/mK|
|Flammability||UL 90 V0|
APPLICATIONS OF PPS GF 40:
PPS GF 40 has a vast range of applications.
- PPS GF 40 has exceptional chemical resistance that makes it favorable for use in the chemical industry. It is particularly resistant to acids, alkali, ketones, and hydrocarbons. Thus, it can function effectively in harsh chemicals environment.
- PPS GF 40 has multiple ranges of applications in electrical engineering.
- Tank Building
- Medical Engineering
- Pharmaceutical industry
- Food and drinks industry
- Precision industry
- Manufacturing nozzles and clutches
- Making housing parts
- Making fixtures
- Coal boiler filters, papermaking felts, speciality membranes, gaskets, and packings can all benefit from PPS fibre.
- TORCON is a PPS product manufactured by Toray. Because of its high melting temperature (around 285°C), PPS can continuously be used at around 190°C.
- PPS GF 40 can also be used for manufacturing boilers and heaters.
- PPS GF 40 can also be effectively used for manufacturing wheel bushings, chemical pumps, and compound clamp rings for semiconductor wafers.
PPS Machining involves several steps. Before PPS machining, the material should be pre-heated. The process involves the following steps:
- PPS SAWING:
Sawing is a commonly used method for PPS machining. For this purpose, cut the plastic using multi-axis saws. Thick-walled parts of PPS GF 40 should be sawed with thin blades to avoid the production of heat during friction.
Saws should be well sharpened and strongly balanced. Additionally, specially designed blades are accessible to cut a variety of polymeric products, such as nylon and acrylic.
- PPS DRILLING:
Drilling is one of the most effective means of PPS machining. Heat is generated during PPS drilling. During this process, care must be taken to decrease heat production to reduce machined stress. The drill point angle should be about 90º to 118°.
Provide support to the backside of plastic to avoid chipping. Hence, the areas which are not supported must not be drilled. Drills must be sharp. Dull drills or poorly sharpened drills can result in high stress.
If PPS drilling is not properly done, it will result in cracking, unsized holes, and unequal dimensions.
- PPS MILLING:
Milling is a common method for machining PPS. In this process, the plastic is held in place and a cylindrical cutter moves along the axis to mill flat surfaces, grooves. PPS milling can be done using CNC and manual mills.
- PPS TURNING:
During PPS turning, a plastic piece is held on a cutter and is rotated. C2 carbide inserts are used for turning. Better surface finishes can be achieved using polished top surfaces. Cutting edges should have fine relief angles.
- PPS HEAT TREATMENT:
In the end, plastic is heated to bond the particles, to brighten them, and to avoid cracking during PPS machining. After heating, the mechanical and thermal properties of plastics improve to a great extent.