文档介绍：krones Contiform
PET Material
PET材料
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List of content PET Structures
目录 PET结构
Self limiting
自限性
Heat ration
热透深度
PET and temperature
PET和温度
PET and Hygroscopie
PET和Hygroscopie
Intrinsic viscosity
特性粘度
Stretch ratio
拉伸比例
Acydaldehyd
Acydaldehyd
Preformstorage
瓶坯储存
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PET Structures
PET结构 PET = Polyethylen-terephthalat
PET=聚对苯二甲酸乙二醇酯
PET molecules create big chains
PET分子构成长链
重复单元
在同一个分子链上
可以有90至200个重
苯核复单元
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PET chain structures
PET链结构
amorphous
非晶体
(transparent Preform)
(透明瓶坯)
Crystallized
晶体
(white pellets) (Orientated bottle)
(白色球粒) (定向的瓶子)
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Blowing process
吹气过程
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Self limiting
自限性
„Self limiting“ by Orientation
因定向而产生的自限性
orientation oriented
定向性定向
PET
s
s
e
r 力
t
S
应 PP
amorphous
非晶体
Onset of strain
induced crystallinity Strain
开始应变诱导结晶λ= 3 hardening
应变硬化
Deformation
变形
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Mechanic induced cristallinity
机械诱导结晶
开始机械诱导
结晶
应力
N/mm
2
拉伸比例[-]
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Crystallization factors
结晶系数
Item Molecular structure
项目分子结构
Resin Crystallisation k = 60%
树脂晶体 k = 60%
Preform Amorphous k = 4%
瓶胚非晶体 k = 4%
Crystallisation k = 20-30%
Standard
Bottle 晶体 k = 20-30%
标准
瓶子
H,E- process Crystallisation k = 30-40%
H,E-过程晶体 k = 30-40%
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Pearl (Weißbruch)
白雾
轴向 Pearl is always inside, because the
拉伸 inside molecules have the longer
way and are going to be
overstretched first.
白雾总是出现在内部,因为内部
外部:50mm+=
的分子运动距离较远,首先被过
度拉伸。
内部:50mm+4mm=54mm
Pearl = inside crystallisation
白雾=内部结晶
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Heat ration
热透深度