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DuPont, Polyplastics is 例, 讲讲 polyoxymethylene (POM) (POM)
一, polyoxymethylene (POM) history
nylon is DuPont 发明, large 家都应该知道; POM也 is DuPont 发明, 你们知道吗?
POM most is Germany chemical 家, 1953 year 诺贝尔 chemical obtain 者赫尔曼·施陶丁格(德语: Hermann Staudinger)发现. in 1920 year research polymer/macromolecule 时发现 POM structure and polymerization process. is due to heat stabilized property issues, POM当时并未 achieve 商业化.
in 1952 year, DuPont company chemical combined formed types POM, and in 1956 year is its homopolymer patent. DuPont company will R N MacDonald as is polymer/macromolecule amount POM patent 发明人. MacDonald and 他同事 patent 描述 端基 is semi shrink aldehyde (~O–CH2OH) polymer/macromolecule amount POM made methods.
但 is due to 缺乏足够 heat stabilized property, this type of POM also is can use. tool heat stabilized property 也意味 can use POM is 由Dal Nagore发明, 他发现 use acid for POM进行端基处理 can will easy understanding poly semi shrink aldehyde formed hot is stability, can melt plastics.
二, polyoxymethylene (POM) introduction
polyoxymethylene (POM) (英文: polyformaldehyde, shrink is POM), thermoplastic property crystallization polymer, by is “ ultra- 钢” or 者“赛钢”, also poly oxygen 亚甲基.
it is polyamide (PA) rear also types comprehensive property can excellent engineering plastics, tool has high force property can, strong/high degree, modulus, wear resistance, tough property, fatigue resistance and resistant creep property, also tool has excellent electrical insulation property, resistant solvent agent property and can processing property, is large general purpose engineering plastics 之一.
|
名称 |
product types |
商 product 名 |
发明者 |
year 代 |
|
polyoxymethylene (POM) |
POM homopolymer |
Delrin |
USA DuPont (Dupont) company |
1959 year |
|
POM copolymer |
Celcon |
USA Celanese (Celanese) company |
1962 year |
POM homopolymer and POM copolymer in structure upper difference
如 lower 图 示: homopolymer POM versus ratio copolymer POM structure more add 规整, therefore crystallization degree more high, mechanical properties more excellent 良!

三, polyoxymethylene (POM) made 备
1, POM homopolymer made 备: 
2, POM copolymer made 备:

四, polyoxymethylene (POM) property can table/sheet
1, Polyplastics POM GH-25 is 例, glass fiber (GF) 25% reinforcement, high strength, high rigidity
|
density |
g/cm³ |
ISO 1183 |
1.59 |
|
water absorption (23℃, water in 24 small 时) |
% |
ISO 62 |
0.7 |
|
tensile strength |
MPa |
ISO 527-1,2 |
136 |
|
fracture 应变 |
% |
ISO 527-1,2 |
2.8 |
|
flexural strength |
MPa |
ISO 178 |
200 |
|
flexural modulus |
MPa |
ISO 178 |
7,900 |
|
简支梁 impact strong/high degree (has 缺口) |
kJ/m² |
ISO 179/1eA |
8 |
|
negative deformation temperature degree (1.8MPa) |
℃ |
ISO 75-1,2 |
162 |
|
线 property thermal expansion coefficient ((23 - 55°C) flow direction) |
x10-5/℃ |
Polyplastics specifications |
3 |
|
线 property thermal expansion coefficient ((23 - 55°C)垂直 direction) |
x10-5/℃ |
Polyplastics specifications |
9 |
|
insulation bad strong/high degree (3mmt) |
kV/mm |
IEC 60243-1 |
24 |
|
volume resistivity |
Ω·cm |
IEC 60093 |
5 x 1013 |
|
surface resistivity |
Ω |
IEC 60093 |
9 x 1015 |
|
洛氏 hardness |
M(Scale) |
ISO2039-2 |
90 |
|
摩 loss amount ratio (for carbon 素钢, evaluation plastics 方面, pressure 0.49MPa, 750px/s) |
x10-3mm³/(N·km) |
JIS K7218 |
80 |
|
摩 loss amount ratio (for 炭素钢, 炭素钢方面, pressure 0.49MPa, 750px/s) |
x10-3mm³/(N·km) |
JIS K7218 |
4 |
|
动 friction coefficient (for carbon 素钢, pressure 0.49MPa, 750px/s) |
JIS K7218 |
0.6 |
|
|
摩 loss amount ratio (for M90-44, evaluation plastics 方面, pressure 0.06MPa, 375px/s) |
x10-3mm³/(N·km) |
JIS K7218 |
3 |
|
摩 loss amount ratio (for M90-44, M90-44方面, pressure 0.06MPa, 375px/s) |
x10-3mm³/(N·km) |
JIS K7218 |
100 |
|
动 friction coefficient (for M90-44, pressure 0.06MPa, 375px/s) |
JIS K7218 |
0.37 |
|
|
flame retardant property |
UL 94 |
HB |
|
|
UL发行 Yellow Card |
E45034 |
2, polyoxymethylene (POM) type property can

3, POM homopolymer and POM copolymer in property can upper difference

两者 important difference: POM homopolymer density, crystallization degree, melting point high, is heat stabilized property 差, processing temperature degree scope/range narrow (约10℃), for acid alkali stability property low; POM copolymer density, crystallization degree, melting point, strong/high degree relatively low, is heat stabilized property good, easy separation understanding, processing temperature degree scope/range wide (50℃), for acid alkali stability property relatively good.
五, DuPont series, Polyplastics series polyoxymethylene (POM) product Complete Guide
USA DuPont series (polyoxymethylene (POM))POM:
(Delrin)POM100AF 20% iron fluorine reinforcement alloy low abrasion consumption high viscosity high toughness POM
DuPont POM 500AF 20%TEFLON3 fiber reinforcement high flow low abrasion consumption polyoxymethylene (POM)
DuPont POM 100P injection molding grade high viscosity high toughness POM
DuPont POM 500P high flow property surface lubricated resin
DuPont POM 900P high flow property low degree surface lubricated resin
DuPont POM 1700P ultra- high flow grade POM ultra- low viscosity material property
DuPont POM 100T tough high viscous property
DuPont POM 100ST high degree surface lubricated, ultra- strong/high tough property polyoxymethylene (POM) resin
DuPont POM 500T low abrasion consumption high flow POM
DuPont POM 100 high viscosity, tool has most tough hardness, excellent heat stabilized property
DuPont POM 500 high flow high impact resistance resistant creep
DuPont POM 500CL high flow resistant abrasion consumption POM
DuPont POM 500AL high flow resistant abrasion consumption grade
DuPont POM 107 strong/high degree, rigid degree, heat stabilized property can good, hardness good.
DuPont POM 127UV UV resistant polyoxymethylene (POM)
DuPont POM 527UV UV resistant 赛钢
DuPont POM 570 20% glass fiber reinforced surface lubricated high property high temperature resistance
DuPont POM 525GR 25% glass fiber reinforced high rigidity high strong/high property
2: Polyplastics series (polyoxymethylene (POM))POM:
Polyplastics POM M25S high viscosity material
Polyplastics POM M25-44 high viscosity POM
Polyplastics POM M90 low viscosity high flow property and short cycle
Polyplastics POM M90-44 low viscosity high flow property and short cycle
Polyplastics POM M90-04 high flow property POM
Polyplastics POM M270S low viscosity high flow property
Polyplastics POM M270-44 low viscosity high flow property
Polyplastics POM GC-25 25% glass fiber reinforced high strength high temperature resistance
Polyplastics POM GH-25 25% glass fiber reinforced high rigidity high flow
Polyplastics POM GR-20 20% glass fiber reinforced
Polyplastics POM GB-25 20%玻璃珠 reinforcement wear resistance property good
Polyplastics POM TR-20 low warpage POM
Polyplastics POM TR-5 low warpage POM
Polyplastics POM CH-10 10% carbon fiber reinforced conductive anti-static low abrasion consumption
Polyplastics POM CH-20 20% carbon fiber reinforced conductive low abrasion consumption
Polyplastics POM ES-5 5% carbon powder reinforcement conductive anti-static
Polyplastics POM EB-10 10% carbon powder reinforcement conductive
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