PPS — Polyphenylenesulfide

PPS thermoplastic belongs to the group of high temperature plastics and combines good long and short term thermal stability. It is also an excellent choice when it comes to a wide range of chemical resistance in harsh environments.
Polyphenylene sulfide (PPS) is an polymer consisting of aromatic rings linked by sulfides and resist chemical and thermal attack. Polyphenylene sulfide is an engineering plastic, commonly used today as a high-performance thermoplastic. PPS can be moulded, extruded, or machined to tight tolerances. In its pure solid form, it may be opaque white to light tan in colour. Maximum service temperature is 218 C. PPS is resistant against any solvent at temperatures below approximately 200 C.

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Structure

Application

Semicon industry: CMP retaining rings, Clamp rings, semiconductor fabrication equipment parts, IC test sockets

Electronic industry: Connectors, contact rails, heat shields, LCD manufacturing equipment, inspection fixtures for PCB, FPC, and IC package substrate

Automotive industry: "under the hood", fuel and brake systems

Medical industry: Parts for surgical instruments

Mechanical engineering: Compressor and pump-parts, gears, valves, slide bearings, chain guides and base plates

Chemical industry: Valves, taps, bushings, pumps, nozzels, tubes and rollers

Selected Grades

Items			Units	Test Method	B4200G4	B4200G6	B4200G7	B4200G8	B4200G9
Items			Units	Test Method	20%GF	30%GF	35%GF	40%GF	45%GF
Physical properties	Colour		/	/	NC/BK	NC/BK/	NC/BK	NC/BK/W	NC/BK/
	Density		g/cm³	ASTM D792	1.48	1.57	1.65	1.67	1.71
	Water Absorption		%	ISO 62	0.02	0.02	0.02	0.02	0.02
Mechanical properties	Tensile strength		Mpa	ASTM D638	145	155	160	170	165
	Tensile Elongation		%	ASTM D638	1.2	0.7	0.65	0.6	0.5
	Flexural Strength		MPa	ASTM D790	225	230	250	265	260
	Flexural Modulus		Mpa	ASTM D790	9200	10200	12000	13500	14500
	Charpy Impact strength(V-notched)		J/M	ASTM D256	65	70	75	85	75
	Friction Coeffcient		Static/Dynamic	JIS K7218	0.35/0.35	0.35/0.35	0.35/0.35	0.35/0.35	0.35/0.35
Thermal properties	Melting Point		℃	ISO 11357-3	280	280	280	280	280
	Heat Distortio Temp	1.8MPa	℃	ASTM D648	255	255	260	265	270
	Linear coefficient of	Flow direction	x10^-5/℃	ISO11359-2	2.5	2.4	2.4	2.3	1.8
	Linear coefficient of	Vertical direction	x10^-5/℃	ISO11359-2	3.7	3.5	3.4	3.1	3
	Flame Retardant		——	UL-94	V-0/0.4	V-0/0.4	V-0/0.4	V-0/0.4	V-0/0.4
Electrical properties	Volume Resistance		Ω·M	IEC60093	10¹⁵h	10¹⁵h	10¹⁵h	10¹⁵h	10¹⁵h
	Surface Resistance		Ω·M	IEC60093	10¹⁶h	10¹⁶h	10¹⁶h	10¹⁶h	10¹⁶h
	Dielectric Strength		MV/m	IEC60243-1	24	23	23	26	25
	Dielectric Constant		10⁶HZ	IEC60250	3.8	3.8	3.8	3.9	4
	Dielectric Loss		10⁶HZ	0.002	0.002	0.002	0.002	0.002
	Comparative Tracking Index		V	IEC60112	150	150	150	150	150
Molding properties	Mold Shrinkage	Flow direction	％	ORD method	0.3	0.3	0.3	0.3	0.25
Molding properties	Mold Shrinkage	Vertical direction	％	ORD method	0.8	0.85	0.8	0.7	0.7