Why Diluents ?
Download
1 / 15

Why Diluents - PowerPoint PPT Presentation


  • 411 Views
  • Uploaded on

Why Diluents ?. That’s Why !!!!!!. Why Diluents ??. High processing viscosities of unmodified liquid epoxy resin systems Impregnating and wetting properties are favourably influenced by reducing the viscosity Larger filler amounts may be used cheaper formulation

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Why Diluents ' - walker


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Slide1 l.jpg

Why Diluents ?

That’s Why !!!!!!


Why diluents l.jpg
Why Diluents ??

  • High processing viscosities of unmodified liquid epoxy resin systems

  • Impregnating and wetting properties are favourably influenced by reducing the viscosity

  • Larger filler amounts may be used

    • cheaper formulation

    • reduce the possible development of heat and shrinkage upon cure

  • Possible Disadvantages;

    • May sweat out of the binder system

      • Reduced flexibility

    • Influence the properties of the binder system

      • Hardness

      • Rate of cure

      • Adhesion, Intercoat adhesion

      • Chemical resistance


Non reactive diluents l.jpg

CH2-OH

OH

Non-Reactive Diluents

  • Alcohols

    • Benzylalcohol

    • Furfurylalcohol

    • Nonyl phenol

    • Acceleration effect

  • Phthalates

    • Dibutylphthalate

  • Hydrocarbon Resins

    • Necirez-products

    • Epodil-L

  • Pine-oil


Reactive diluents l.jpg

O

O

O

=

O

O

C

Reactive Diluents

  • Polypropylene glycol diepoxides

    • D.E.R.™ 732P liquid epoxy resin

    • D.E.R. 736P liquid epoxy resin

  • Alcoholglycidylethers & esters [ mono- or multi-functional ]

    • EMS [ Grilonit ]

    • Prümmer [ Polypox ]

    • Resolution [ Heloxy, Cardura E-10]

    • Air Products [ Epodil ]

    • Etc…

™ Trademark of The Dow Chemical Company



Viscosity cutting powder l.jpg
Viscosity Cutting Powder

p-tert. BP GE = R 7

BDDGE, o-CGE, HDDGE = R 3, 6, 18

C12-C14 AGE = R 24

2-EH GE = R 17


General observations l.jpg
General Observations

  • The addition of reactive diluents might have the following effects:

    • reduced viscosity,

    • changed surface tension [ wetting, air-release etc. ],

    • changed reactivity, especially for the mono-functional reactive diluents,

    • changed solvent resistance,

    • changed physical strength,

    • changed linear coefficient of expansion,

    • changed flexibility / impact resistance,

    • changed abrasion resistance

    • ......


Reactive diluents used by dow l.jpg
Reactive Diluents used by Dow

o-Cresyl Glycidyl ether

C12 - C14 alkyl Glycidyl ether

Hexane diol di Glycidyl ether

Compromise between Environmental, Hygiene & Safety aspects and performance.


O cresyl glycidyl ether l.jpg
o-Cresyl Glycidyl ether

Typical properties

EEW 180 g/eq

Viscosity 7 mPa.s @ 25 °C


Hexane diol di glycidyl ether l.jpg
Hexane Diol Di Glycidyl ether

Typical properties

EEW 142 g/eq

Viscosity 14 mPa.s @ 25 °C

Total Chlorine ca 4 wt%


C12 c14 alkyl glycidyl ether l.jpg
C12 - C14 Alkyl Glycidyl Ether

Typical properties

EEW 280 g/eq

Viscosity 7 mPa.s @ 25 °C

Total Chlorine ca 3 wt%

Remark : FDA approved for food contact applications


Viscosity cutting power l.jpg
Viscosity Cutting Power

™ Trademark of The Dow Chemical Company



Chemical resistance l.jpg

Aromatic

IPD-adduct

DETA-adduct

Polyamide

D.E.R.™321

Dist. Water

+ 1.3

+ 2.1

+ 1.2

+ 2.5

10 wt% HCl

+ 1.1

+ 1.7

+ 1.1

+ 6.5

10 wt% NaOH

+ 1.1

+ 1.7

+ 1.0

+ 2.0

10 wt% HAc

+ 1.4

+ 5.4

+ 20

Destroyed

Xylene

+ 1.4

+ 9.8

+ 4.9

Destroyed

Gasoline

- 0.1

0

+ 0.2

+ 23

D.E.R.™330

Dist. Water

+ 1.4

+ 1.4

10 wt% HCl

+ 1.1

+ 1.3

10 wt% NaOH

+ 1.1

+ 1.0

10 wt% HAc

+ 1.3

+ 5.1

Xylene

+ 0.1

+ 0.1

Gasoline

+ 0.1

0

Chemical Resistance

™ Trademark of The Dow Chemical Company