The Universal Selection Source: Plastics & Elastomers

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Water Absorption 24 hours

Some polymers have a natural tendency to absorb water. This leads to changes in dimensions as well as in mechanical and electrical performance. This represents the % weight gain of a plastic specimen due to water absorption after immersion in distilled water during 24 hours at 23°C. Two other testing procedures are possible: Water Absorption at saturation (measurement occurs when the polymer does not absorb water anymore); and Water Absorption at Equilibrium (specimens are exposed to a humid environment -- generally at 50% relative humidity -- at a specified temperature -- 23°C or 73.4°F -- for 24 hours).

Most widely used standards to measure Water Absorption in plastics are ASTM D570 and ISO 62.

Name of the polymer Explicit name of the polymer Min Value(%) Max Value(%)
ABS Acrylonitrile-Butadiene Styrene 0.050 1.800
ABS FR Acrylonitrile-Butadiene Styrene flame retardant 0.100 0.800
ABS High Heat Acrylonitrile-Butadiene Styrene High Heat 0.100 0.800
ABS High Impact Acrylonitrile-Butadiene Styrene High Impact 0.100 0.800
ABS/PC Acrylonitrile-Butadiene Styrene/Polycarbonate 0.200 0.300
ABS/PC 20% GF Acrylonitrile-Butadiene Styrene/Polycarbonate 20% glass fiber 0.200 0.300
ABS/PC FR Acrylonitrile-Butadiene Styrene/Polycarbonate flame retardant 0.200 0.300
Amorphous TPI Blend, Ultra-high heat, Chemical Resistant (Standard Flow) Amorphous TPI Blend, Ultra-high heat, Chemical Resistant (Standard Flow) 0.390 0.390
ASA Acrylonitrile Styrene Acrylate 0.200 0.300
ASA/PC Acrylonitrile Styrene Acrylate/Polycarbonate 0.300 0.400
ASA/PC FR Acrylonitrile Styrene Acrylate/Polycarbonate flame retardant 0.200 0.300
ASA/PVC Acrylonitrile Styrene Acrylate/Polyvinyl Chloride 0.100 0.200
CA - Cellulose Acetate Cellulose Acetate 1.900 7.000
CAB - Cellulose Acetate Butyrate Cellulose Acetate Butyrate 0.900 2.200
Cellulose Diacetate-Colored Films Celllulose Diacetate-Colored Films 2.150 2.150
COC Cyclic Olefin Copolymer 0.010 0.010
CP - Cellulose Proprionate Cellulose Proprionate 1.200 3.000
CPVC - Chlorinated Polyvinyl Chloride CPVC - Chlorinated Polyvinyl Chloride 0.020 0.150
ECTFE Ethylene Chlorotrifluoroethylene 0.100 0.100
ETFE Ethylene Tetrafluoroethylene 0.030 0.030
EVA Ethylene Vinyl Acetate 0.005 0.130
EVOH Ethylene Vinyl Alcohol 6.000 10.000
FEP Fluorinated Ethylene Propylene 0.010 0.010
HDPE - High Density Polyethylene HDPE - High Density Polyethylene 0.005 0.010
HIPS - High Impact Polystyrene HIPS - High Impact Polystyrene 0.050 0.150
HIPS FR V0 High Impact Polystyrene flame retardant V0 0.050 0.100
Ionomer (EMAC) Ionomer (Ethylene-Methyl Acrylate Copolymer) 0.010 0.010
LCP Liquid Crystal Polymer 0.030 0.030
LCP CF Liquid Crystal Polymer carbon fiber 0.030 0.300
LCP GF Liquid Crystal Polymer glass fiber 0.020 0.020
LCP MINERAL Liquid Crystal Polymer mineral 0.020 0.050
LDPE - Low Density Polyethylene LDPE - Low Density Polyethylene 0.005 0.015
LLDPE - Linear Low Density Polyethylene LLDPE - Linear Low Density Polyethylene 0.005 0.010
MABS Transparent Acrylonitrile Butadiene Styrene 0.340 0.360
PA 11 30% Glass fiber reinforced Polyamide 11 30% Glass fiber reinforced 0.100 0.200
PA 11 conductive Polyamide 11 conductive 0.900 1.900
PA 11 flexible Polyamide 11 flexible 0.800 1.600
PA 11 rigid Polyamide 11 rigid 0.900 1.900
PA 12 conductive Polyamide 12 conductive 1.000 1.200
PA 12 fiber reinforced Polyamide 12 fiber reinforced 0.500 1.400
PA 12 flexible Polyamide 12 flexible 0.900 1.900
PA 12 glass filled Polyamide 12 glass filled 0.300 0.400
PA 12 rigid Polyamide 12 rigid 0.700 1.600
PA 46 Polyamide 46 1.300 3.700
PA 46 30% GF Polyamide 46 30% glass fiber 9.500 9.500
PA 6 Polyamide 6 1.600 1.900
PA 6-10 Polyamide 6-10 0.400 0.600
PA 66 Polyamide 6-6 1.000 3.000
PA 66 30% GF Polyamide 6-6 30% glass fiber 0.800 1.100
PA 66 30% mineral filled Polyamide 6-6 30% mineral filled 1.100 1.200
PA 66 IM 15-30% GF Polyamide 6-6 impact modified 15-30% glass fiber 0.600 1.000
PA 66 impact modified Polyamide 6-6 impact modified 1.000 3.000
PA semi-aromatic Polyamide semi-aromatic 2.300 3.200
PAI Polyamide-Imide 0.100 0.300
PAI 30% GF Polyamide-Imide 30% glass fiber 0.100 0.300
PAI low friction Polyamide-Imide low friction 0.100 0.400
PAN Polyacrylonitrile 0.300 0.300
PAR Polyarylate 0.270 0.300
PARA 30-60% GF Polyarylamide 30-60% glass fiber 0.130 0.200
PBT Polybutylene Terephthalate 0.100 0.200
PBT 30% GF Polybutylene Terephthalate 30% glass fiber 0.050 0.100
PC 20-40% GF Polycarbonate 20-40% glass fiber 0.100 0.200
PC 20-40% GF FR Polycarbonate 20-40% glass fiber flame retardant 0.100 0.400
PC high heat Polycarbonate high heat 0.100 0.200
PC/PBT Polycarbonate/Polybutylene Terephthalate blend 0.030 0.500
PC/PBT glass filled Polycarbonate/Polybutyleneterphtalate blend glass filled 0.060 0.300
PCL - Polycaprolactone Polycaprolactone 0.350 0.350
PCTFE Polymonochlorotrifluoroethylene 0.010 0.050
PE 30% GF Polyethylene 30% glass fiber 0.020 0.060
PEEK Polyetheretherketone 0.100 0.500
PEEK 30% CF Polyetheretherketone 30% carbon fiber 0.060 0.060
PEEK 30% GF Polyetheretherketone 30% glass fiber 0.060 0.120
PEI Polyetherimide 0.200 0.300
PEI 30% GF Polyetherimide 30% glass fiber 0.100 0.200
PEI mineral filled Polyetherimide mineral filled 0.200 0.300
PEKK– Low cristallinity grade Polyetherketoneketone– Low cristallinity grade 0.100 0.200
PESU Polyethersulfone 0.100 1.700
PESU 10-30% GF Polyethersulfone 10-30% glass fiber 0.200 0.900
PET Polyethylene Terephtalate 0.100 0.200
PET 30% GF Polyethylene Terephtalate 30% glass fiber 0.050 0.100
PET 30/35% GF Impact modified Polyethylene Terephtalate 30/35% glass fiber impact modified 0.100 0.300
PET G Polyethylene Terephtalate Glycol 0.100 0.200
PE-UHMW Polyethylene -Ultra High Molecular Weight 0.005 0.010
PFA Perfluoroalkoxy 0.010 0.030
PI Polyimide 1.340 1.430
PMMA Polymethylmethacrylate (Acrylic) 0.100 0.400
PMMA high heat Polymethylmethacrylate (Acrylic) high heat 0.200 0.400
PMMA Impact modified Polymethylmethacrylate (Acrylic) impact modified 0.200 0.800
PMP Polymethylpentene 0.010 0.010
PMP 30% GF Polymethylpentene 30% glass fiber 0.010 0.100
PMP mineral filled Polymethylpentene mineral filled 0.110 0.110
POM Polyoxymethylene (acetal) 0.150 0.500
POM impact modified Polyoxymethylene (acetal) impact modified 0.300 0.500
POM low friction Polyoxymethylene (acetal) low friction 0.200 0.270
POM mineral filled Polyoxymethylene (acetal) mineral filled 0.200 0.500
PP 10-20% GF Polypropylene 10-20% glass fiber 0.010 0.020
PP 10-40% mineral filled Polypropylene 10-40% mineral filled 0.010 0.030
PP 10-40% TALC Polypropylene 10-40% talc 0.010 0.030
PP 30-40% GF Polypropylene 30-40% glass fiber 0.010 0.020
PP copo Polypropylene copolymer 0.010 0.100
PP homo Polypropylene homopolymer 0.010 0.100
PP impact modified Polypropylene impact modified 0.010 0.100
PPA Polyphthalamide 0.360 0.750
PPA – 30% mineral Polyphthalamide– 30% mineral 0.110 0.130
PPA – 33% glass fiber Polyphthalamide – 33% glass fiber 0.200 0.220
PPA – 33% glass fiber – high flow Polyphthalamide– 33% glass fiber – high flow 0.250 0.270
PPA – 45% glass fiber Polyphthalamide– 45% glass fiber 0.110 0.130
PPE Polyphenylene Ether 0.060 0.120
PPE 30% GF Polyphenylene Ether 30% glass fiber 0.060 0.100
PPE FR Polyphenylene Ether flame retardant 0.080 0.120
PPE impact modified Polyphenylene Ether impact modified 0.060 0.120
PPE mineral filled Polyphenylene Ether mineral filled 0.060 0.120
PPS Polyphenylene Sulfide 0.010 0.070
PPS 20-30% GF Polyphenylene Sulfide 20-30% glass fiber 0.020 0.050
PPS 40% GF Polyphenylene Sulfide 40% glass fiber 0.040 0.050
PPS conductive Polyphenylene Sulfide conductive 0.030 0.070
PPS GF & mineral Polyphenylene Sulfide glass fiber & mineral 0.020 0.080
PPSU Polyphenylene Sulfone 0.350 0.370
PS 30 % GF Polystyrene 30% glass fiber 0.050 0.300
PS crystal Polystyrene crystal 0.010 0.040
PS high heat Polystyrene high heat 0.010 0.070
PSU Polysulfone 0.200 0.800
PSU 30% GF Polysulfone 30% glass fiber 0.300 0.400
PSU mineral filled Polysulfone mineral filled 0.300 0.300
PTFE Polytetrafluoroethylene 0.005 0.010
PTFE 25% GF Polytetrafluoroethylene 25% glass fiber 0.010 0.020
PVC 20% GF Polyvinyl Chloride 20% glass fiber 0.010 0.200
PVC plasticized Polyvinyl Chloride plasticized 0.200 1.000
PVC plasticized filled Polyvinyl Chloride plasticized filled 0.150 0.750
PVC rigid Polyvinyl Chloride rigid 0.040 0.400
PVDC Polyvinylidene Chloride 0.100 0.100
PVDF Polyvinylidene Fluoride 0.030 0.050
SAN Styrene Acrylonitrile 0.150 0.300
SAN 20% GF Styrene Acrylonitrile 20% glass fiber 0.100 0.200
SMA Styrene Maleic Anhydride 0.100 0.300
SMA 20% GF Styrene Maleic Anhydride 20% glass fiber 0.100 0.300
SMA FR V0 Styrene Maleic Anhydride flame retardant V0 0.100 0.300
SMMA Styrene Methyl Methacrylate 0.100 1.000
SRP Polyphenylene (Self reinforced) 0.140 0.200
XLPE - Crosslinked Polyethylene XLPE - Crosslinked Polyethylene 0.005 0.010

Disclaimer: all data and information obtained via the Polymer Selector including but not limited to material suitability, material properties, performances, characteristics and cost are given for information purpose only. Although the data and information contained in the Polymer Selector are believed to be accurate and correspond to the best of our knowledge, they are provided without implied warranty of any kind. Data and information contained in the Polymer Selector are intended for guidance in a polymer selection process and should not be considered as binding specifications. The determination of the suitability of this information for any particular use is solely the responsibility of the user. Before working with any material, users should contact material suppliers in order to receive specific, complete and detailed information about the material they are considering. Part of the data and information contained in the Polymer Selector are genericised based on commercial literature provided by polymer suppliers and other parts are coming from assessments of our experts.

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