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伊士曼(Eastman)CAB 381-0.5物性表

分类: CAB   出处:仁捷塑化  更新时间:2014-05-23   添加到收藏  

 伊士曼CAB 381-0.5Application/Uses

Automotive OEM
Coatings
Coatings for Automotive Plastics
Coatings for plastic
Lacquers
Lacquers for automotive
Nail care
Printing Inks
Truck/Bus/Commercial Vehicles
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Eastman CAB 381-0.5Product Description

Remarkable polymers with a renewable backbone provided by nature itself. 
 
Eastman™ Cellulose Acetate Butyrate (CAB 381-0.5) is a cellulose ester with medium butyryl content and low viscosity. It was designed for use where low-application viscosities at relatively high solids levels is needed. It is soluble in a wide range of solvents and compatible with many other resins. It will also tolerate the use of solvent blends currently exempt from certain air pollution regulations. It is supplied as a dry, free-flowing powder. Eastman™ cellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.

Eastman CAB 381-0.5Typical Properties

Property   Typical Value, Units
Butyryl Content        37 wt %
Acetyl Content        13 wt %
Hydroxyl Content        1.5%
Viscosity   a     1.9 poise
Color   b     150 ppm
Haze   b     35 ppm
Acidity    as Acetic Acid    0.03 wt %
Ash Content        <0.05%
Refractive Index        1.48 
Heat Test    @ 160°C for 8 hr    Tan melt 
Melting Point        155-165°C
Specific Gravity        1.2 
Wt/Vol    (Cast Film)    1.2 kg/L (10.0 lb/gal)
Bulk Density  
  Poured
  352 kg/m3 (22 lb/ft3 )
  Tapped
  465 kg/m3 (39 lb/ft3 )
Dielectric Strength        787-984 kv/cm (2-2.5 kv/mil)
Glass Transition Temperature (Tg)        130°C
Molecular Weight   c Mn    30000 
Tukon Hardness        18 Knoops
a  Viscosity determined by ASTM Method D 1343. Results converted to poises (ASTM Method D 1343) using the solution density for Formula A as stated in ASTM Method D 817 (20% Cellulose ester, 72% acetone, 8% ethyl alcohol).
b  Determination of color and haze made on a solution of the cellulose ester dissolved in MIBK using Pt-Co color standards and Johns-Manville Celite (diatomaceous silica products) haze standards.
c  Polystyrene equivalent number average molecular weight determined by gel permeation chromatography.
Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

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