Common characteristics of engineering plastics ─ thermal properties of the table

Features

Thermal properties

generic common name heat distortion temperature continuous heat resistance thermal expansion heat transfer arc
Test mode ASTM D648 Long time D696 CI77
Units 18.5kg/cm平方 10的5次方/℃ 10的-4次方/cal  Sec-cm/℃-cm
PVC 氯乙烯 80 65-75 7-25 3.0-7.0
CPVC 氯乙烯 95-112 99 6.8-7.6 3.3
HDPE 聚乙烯 43-54 80 11-13 11-12.4
UPE 乙烯鋼 91 120 12 11-12.4
PVDF 鐵氟龍2F 160 150 12 3
PTFE 鐵氟龍4F 240-245 290 10 6
PETP 聚酯膠 180 100 2.2 3.36
PP 聚丙烯 99-104 85 6-8.5 2.8
AP-6 尼龍6 67-70 79-121 8.3 5.85
AP-66 尼龍66 66-104 82-150 8 5.885
MC MC尼龍 149-219 121-149 9 X
POM 塑膠鋼 110 80-120 8.5 5.5
ABS 丁二烯 94-107 60-110 6-13 4.6-8.6
PMMA 壓克力 74-102 71-85 5-9 4-6
PC 聚碳酸酯 130-140 120 6.6 4.6
PEEK 聚醚醚酮 250 160 1.4 2.2
BAKELITE 電木 X 150 1.4 4.9
FRP 玻璃纖維 139-278 180 1.1-3.5 4-10

PPS Polyphenylene Cheng S features:

Good heat resistance and flame resistance, HDT high, high temperature, mechanical strength is still high.
High operating temperature (continuous working temperature: 220 ℃, the maximum working temperature: 260 ℃).
Crystallization speed, the crystallinity of up to 60 ~ 65%.
Excellent dimensional stability, good electrical properties, melt viscosity is low, forming resistance.
Good chemical resistance, chemical resistance Excellent (except for concentrated nitric acid), and TEFLON considerable, and at 200 ℃, without any solvent soluble PPS.
Good electrical insulator.
High resistance to radiation.
Impact resistance, weather resistance, toughness and wear characteristics of friction less.
Will flash, mechanical properties affected by the mold temperature.

PU Urethane characteristics:

Synthesis: is diisocyanate, polyethylene glycol, and synthetic short-chain diol product obtained
Uses: Widely used in coatings, automotive, leather, furniture, fiber, construction and other industries and then
Synthesis: synthesis of a feed pre-polymer synthesis and performance comparison
Performance of a pre-polymer synthesis synthesis feed
Limited selectivity of the larger formula
Larger smaller temperature viscosity
Better processing of poor operational
Poor mechanical properties better
Lower manufacturing costs higher
No need for hardener
The characteristics of polyurethane

PSU poly tunnel features:

Traditional Chinese name is poly tunnel
High-performance non-crystalline thermoplastic engineering plastic, natural color as transparent amber, its various excellent features make it suitable for harsh environment applications and high performance standards, you can use a variety of conventional thermoplastic processing equipment, such as ︰ injection, pressure out, blowing molding, etc. processing.

Features Introduction
‧ good temperature resistance (glass transition temperature of 187 ° C, long-term use temperature of 160 ° C).
‧ good hydrolysis and chemical resistance.
‧ transparent, natural fire retardant (UL94-Vo, 3.2mm).
‧ good dimensional stability and excellent mechanical strength and rigidity and electrical performance.
‧ high purity (by USP Class VI, NSF certified).

Application Description
‧ food industry: food containers, films.
‧ Medical Industry: surgical instruments, dialysis membrane.
‧ Auto Industry: fuses, headlights and reflector.
‧ electronics industry: the chip tray, battery box.

PBI polystyrene and Mimi features:

High operating temperature (continuous working temperature: 310 ℃, the maximum working temperature: 500 ℃).
Maintain a high mechanical strength, hardness, creep resistance.
At 250 ℃, the following has an extremely low coefficient of thermal expansion.
Outstanding wear characteristics.
Low flammability.
Excellent insulator.
Quality, little bubbles will remain in the PBI material.
Ion has a high purity level.
High resistance to radiation.

PI VESPEL polyimide features:

High operating temperature (continuous working temperature: 288 ℃, the maximum working temperature: 480 ℃).
Maintain a high mechanical strength, hardness, creep resistance.
Sliding surface and wear resistance with good high.
This is a non-resin material filling the machine to provide the best physical characteristics and the best electrical insulation and heat insulation. Often used to make high temperature valve seat, seals, insulation and other pieces