Virgin GPPS resin / General Purpose Polystyrene GPPS 5250/525/500N /GPPS plastic raw materials

Product Overview

Description

GPPS (General purpose polystyrene)
General Purpose Polystyrene is a kind of thermoplastic resin, is a colorless, odorless, tasteless, shiny, transparent beaded or granular solid. Density is 1.04 to 1.09, transparency is 88% to 92%, refractive index is 1.59 to 1.60. In the stress function, resulting in birefringence, the so-called stress - optical effect. Product of the melting temperature is 150 to 180 ° C, thermal decomposition temperature is 300 ° C, the heat distortion temperature is 70 to 100 ° C, long-term use temperature is 60 ~ 80 °C.

Features

• Good heat distortion resistance grades with intermediate strength and flow.


• High toughness & good melt strength


• 
  
  
  

  Specification

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  Item	Test conditions	Test method	Test data	unit
  Density		ISO 1183:1987	1040	kg/m3
  Water absorption		ISO 62:1999	<0.1	%
  Melt flow rate	200°C/5kg	ISO 1133:1997	3.8	cm3/10min
  Process shrinkage		ISO 294-4:1997	0.4-0.6	%
  Charpy impact strength	1eU	ISO 179:1993	15	kj/m2
  Tensile modulus	1mm/min	ISO 527-2:1993	3300	MPa
  Elongation	50mm/min	ISO 527-2:1993	3	%
  Tensile strength at break	50mm/min	ISO 527-2:1993	55	MPa
  Ball indentation hardness H	358N/30s	ISO 2039-1:1993	150	N/mm2
  Bending strength	2mm/min	ISO 178:1993	100	MPa
  HDT	1.8MPa	ISO 75-2:1993	84	°C
  Linear coefficient of thermal expansion	(23-80)°C	DIN 53 752	0.8-1.0	K-1
  Heat conduction		DIN 52 612	0.16	W/mK
  Vicat softening point	B50/oil	ISO 306:1994	93	°C
  Flame retardance	>1.4mm	UL-Standard 94	94HB	Class

  
  
  
  
  
  

  Application

  
  
  
  

  1.Food packaging.
  2.Electrical industrial, instrumentation, communications equipment industry and other various instruments has been widely used as a shell, lamp, optical parts, equipment parts, transparent windows mirror, transparent model, acid, chemical storage tank, acid tank transport, telecommunications components, high frequency capacitors, high frequency insulation pads, brackets, inserts and frozen insulating materials.
  3.All kinds of daily necessities,such as Plastic Cutlery, Toys.

  
  
  
  

  Package

  
  
  
  

  25kg/bag, or per your requirement.18-20mt/20'FCL