Toyobo Pelprene®

PELPRENE® Basic Grades & Material Properties

About Basic Grades

PELPRENE , a thermoplastic elastomer, is characterized by flexibility  resulting from the pairing of soft and hard segments in the copolymer. Two types of PELPRENE are available.

P-type PELPRENE, is a copolymer composed of polybutylene terephthalate as the hard element and an aliphatic polyether as the soft element.  Ideally balanced proportions of heat resistance/low temperature resistance, chemical resistance, and processability are the key characteristics of P-type PELPRENE. 

S-type PELPRENE is a copolymer composed of  polybutylene terephthalate as the hard element and an aliphatic polyester as the soft element. It has physical properties comparable to those of P-type PELPRENE, and grades ranges from moderate to high hardness. S-type PELPRENE has excellent heat-aging resistance and weather resistance. 

Heat-aging resistance of PELPRENE at a service temperature of 170°C

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P-type

Item Method Unit PELPRENE P-Type
P30B P40B P40H P55B P70B
Hardness JIS K6301 A 71 82 89 94 96
ASTM D2240 D 29 31 38 44 46
Specific Gravity ASTM D792 1.05 1.07 1.12 1.15 1.17
50% Tensile Modulus ASTM D638 MPa 2.5 3.4 6.4 9.8 10.8
10% Compression Modulus ASTM D695 MPa 2.0 2.4 4.5 7.6 9.2
Flexual Modulus ASTM D790 MPa 15 23 51 76 108
Tensile strength ASTM D638 MPa 12 14 21 29 30
Tensile elongation ASTM D638 % 840 820 690 700 550
Tear strength ASTM D624 kN/m 71 76 98 113 122
IZOD notched impact test ASTM D256 J/m NB** NB NB NB NB
Taber abrasion ASTM D1044 mg/1000c. 20 20 20 15 15
Resilience JIS K6301 % 78 81 78 74 71
Compression set JIS K6301 % 50 49 50 53 55
Melting point DSC 160 180 172 182 200
Vicat softening point ASTM D1525 73 89 120 155 170
Heat deflection temperature ASTM D648 74
Brittle point JIS K6301 < -65 < -65 < -65 < -65 < -65
Flammability UL94 HB HB HB HB HB
Coefficient of heat expansion TMA 1/K 20×10⁻ ⁵ 20×10⁻ ⁵ 17×10⁻ ⁵ 17×10⁻ ⁵ 16×10⁻ ⁵
Dielectric strength JIS K2111 MV/m 20 20 20 22 25
Volume strength ASTM D257 Ω•cm 1×10¹² 1×10¹² 2×10¹² 9×10¹² 6×10¹³
Moisture absorption 23℃, 65%RH % 0.58 0.56 0.48 0.45 0.43
Melt flow index ASTM D1238 g/10min 14ª 10ª 10ª 22ᵇ 20ᵇ
Mold shrinkage Mold 2mm thickness % 0.4 0.4 0.5 0.7 1.0

* Melt flow index a:190℃ b:230℃
** NB : Not Break


Item Method Unit PELPRENE P-Type
P90B P150B P280B E450B P150M
Hardness JIS K6301 A 96 98 99 99 96
ASTM D2240 D 52 57 68 78 50
Specific Gravity ASTM D792 1.19 1.23 1.26 1.28 1.19
50% Tensile Modulus ASTM D638 MPa 14.7 19.6 28.4 40.3 9.8
10% Compression Modulus ASTM D695 MPa 13.3 19.1 35.0 39.2 9.0
Flexual Modulus ASTM D790 MPa 162 289 494 1,267 118
Tensile strength ASTM D638 MPa 31 38 37 35 37
Tensile elongation ASTM D638 % 700 500 500 440 420
Tear strength ASTM D624 kN/m 172 177 206 237 142
IZOD notched impact test ASTM D256 J/m NB NB 78 39 NB
Taber abrasion ASTM D1044 mg/1000c. 13 10 8 5 15
Resilience JIS K6301 % 65 59 55 44
Compression set JIS K6301 % 57 60 60
Melting point DSC 203 212 218 222 170
Vicat softening point ASTM D1525 180 190 199 202 140
Heat deflection temperature ASTM D648 101 117 155 161 50
Brittle point JIS K6301 < -65 < -65 < -60 < -60 < -65
Flammability UL94 HB HB HB HB class HB class
Coefficient of heat expansion TMA 1/K 14×10⁻⁵ 14×10⁻⁵ 14×10⁻⁵ 14×10⁻⁵ 17×10⁻⁵
Dielectric strength JIS K2111 MV/m 30 30 30 30 30
Volume strength ASTM D257 Ω•cm 6×10¹³ 2×10¹⁴ 5×10¹⁴ 7×10¹⁵ 1×10¹⁴
Moisture absorption 23℃, 65%RH % 0.40 0.36 0.30 0.25 0.36
Melt flow index ASTM D1238 g/10min 20ᵇ 20ᵇ 13ᵇ 10ᵇ 20ᵇ
Mold shrinkage Mold 2mm thickness % 1.1 1.3 1.6 1.7 0.3

* Melt flow index a:190℃ b:230℃
  The data the description is the popular value, not the guaranteed value.


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S-type

Item Method Unit PELPRENE S-Type
S1001 S2001 S3001 S6001 S9001
Hardness JIS K6301 A 96 97 98 99 99
ASTM D2240 D 48 55 60 72 78
Specific Gravity ASTM D792 1.21 1.24 1.26 1.28 1.29
50% Tensile Modulus ASTM D638 MPa 10.8 16.7 19.6 27.5 44.1
10% Compression Modulus ASTM D695 MPa 10.2 16.3 21.1 30.8 39.2
Flexual Modulus ASTM D790 MPa 125 186 274 568 882
Tensile strength ASTM D638 MPa 30 36 40 44 49
Tensile elongation ASTM D638 % 730 610 540 490 400
Tear strength ASTM D624 kN/m 118 155 167 196 250
IZOD notched impact test ASTM D256 J/m NB NB NB 147 59
Taber abrasion ASTM D1044 mg/1000c. 15 12 10 8 6
Resilience JIS K6301 % 63 60 58 56
Compression set JIS K6301 % 60 61 62
Melting point DSC 200 206 216 218 223
Vicat softening point ASTM D1525 172 185 193 202 207
Heat deflection temperature ASTM D648 68 107 117 130 146
Brittle point JIS K6301 < -65 < -65 < -65 < -60 < -50
Flammability UL94 HB HB HB HB HB
Coefficient of heat expansion TMA 1/K 19×10⁻⁵ 14×10⁻⁵ 14×10⁻⁵ 14×10⁻⁵ 14×10⁻⁵
Dielectric strength JIS K2111 MV/m 25 30 30 30 30
Volume strength ASTM D257 Ω•cm 2×10¹² 2×10¹³ 1×10¹⁴ 5×10¹⁴ 7×10¹⁵
Moisture absorption 23℃, 65%RH % 0.40 0.38 0.34 0.30 0.28
Melt flow index ASTM D1238 g/10min 18ᵇ 16ᵇ 16ᵇ 12ᵇ 10ᵇ
Mold shrinkage Mold 2mm thickness % 1.2 1.3 1.5 1.7 1.8

* Melt flow index a:190℃ b:230℃
  The data the description is the popular value, not the guaranteed value.


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