Dr. Michael Y. Sun
濕端化學 Wet End Chemistry -1
2014/5/20
WL
Objectives w
To understand and review functions of wet-end chemical additives that affect machine runnability, productivity, and paper properties. 總觀濕端化學的藥品添加如何影響造紙機的運轉性、產量、和其他的紙張性質。
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To apply wet-end chemistry knowledge gained from this course on papermaking processes for productivity improvement and/or cost reduction. 應用濕端化學的知識來增加生產力和價格競爭
講座主題 :
Scope of the Course
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有什麼?
Lecture
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加什麼?
Q&A Case Stadies
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What's in the Wet-end?
什麼是濕端 ?
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為什麼?
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What's added to the Wet-end?
濕端添加了什麼?
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幹什麼?
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How do the chemical work?
化學藥品如何工作?
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What can you do to improve your Wet-end?
可以做什麼來改善濕端?
Water - H2O
Water - H2O
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Material in HeadBox : Water + Fiber
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Hardness
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Suspension Medium for stock and additives
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Acidity / Alkalinity
(AKD - Alkalinity)
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Liquid for Fiber Swelling and Interfiber Bonding
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Conductivity
mS/cm
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Solvent for Wet-end Polymers
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Higher temperature / Lower Viscosity / Better Table Drainage
lower the better !
> The amount of total dissolved ions in an aqueous sample