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Epoxy Resin
- 1. 17-01-2018 MEE411 EPOXYRESINS EPOXY RESIN Muskan Rathi (14BMD0011)
- 2. 17-01-2018 MEE411 EPOXYRESINS 2 INTRODUCTION EPOXY RESINS- The resins which have at least two epoxy groups per molecule are known as epoxy resins EPOXIDE- An epoxide is a cyclic ether with a 3 atom ring. ETHER – R-O-R’ eg. CH₃-CH₂-O-CH₂-CH₃
- 3. 17-01-2018 MEE411 EPOXYRESINS 3 types i. Bisphenol A epoxy resin ii. Bisphenol F epoxy resin iii. Novolac epoxy resin iv. Aliphatic epoxy resin v. Glycidylamine epoxy resin
- 4. 17-01-2018 MEE411 EPOXYRESINS 4 RAW MATERIAL i. Bisphenol-A ii. Epichlorohydrine iii. Sodium hydroxide iv. Methylisobutylketone The raw materials for epoxy resin production are largely petroleum derived, although some plant derived sources are now becoming commercially available (e.g. plant derived glycerol is used to make epichlorohydrin)
- 5. 17-01-2018 MEE411 EPOXYRESINS 5 reaction mechanism Epoxy prepolymer formed from bisphenol –A and epichlorohydrin by step growth polymerisation STEP I --- Formation of low molecular weight prepolymer called diepoxy
- 6. 17-01-2018 MEE411 EPOXYRESINS 6 The first thing that happens is that the NaOH does a little swap with the bisphenol A, to give the bisphenol A sodium salt:
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- 8. 17-01-2018 MEE411 EPOXYRESINS 8 STEP 2 --- Curing the Diepoxy with a Diamine Epoxide + RNHCH₂--CH-- OH RNCH₂--CH-- OH CH₂--CH--OH
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- 14. 17-01-2018 MEE411 EPOXYRESINS 14 manufacturing process Suspension Polymerisation is used Machinery and Equipments Required i. Storage tank ii. Water tank iii. Recovery Tank iv. Salt solution Tank v. Reactor vi. Evaporator vii. Condenser viii. Filter ix. Pump x. Vacuum pump xi. Boiler
- 15. 17-01-2018 MEE411 EPOXYRESINS 15 Flow Sheet of Epoxy Resin Production Process
- 16. 17-01-2018 MEE411 EPOXYRESINS 16 First Stage Reaction (exothermic) -- Epoxy radical is separated from epichlorohydrine to be attached to hydroxyl radical, thus producing chlorohydrine ether. Second Stage Reaction - the produced chlorohydrine ether causes a dechloration reaction to occur in the presence of NaOH, producing a terminal epoxy radical. The ether of bisphenol-A produced as a result continues to react with bisphenol-A and epichlorhydrine and gradually forms a high polymer. On completion of polymerization, the polymer is transferred through storage tank to the epichlorohydrine separation evaporator, where epichlorohydrine is separated under vacuum.
- 17. 17-01-2018 MEE411 EPOXYRESINS 17 PROPERTIES i. High thermo stability ii. High abrasion resistance iii. Acceptable drying time iv. Low shrinkage v. Excellent weather/ chemical resistance vi. Excellent adhesive strength
- 18. 17-01-2018 MEE411 EPOXYRESINS 18 APPLICATIONS i. Paints and coatings ii. Adhesives iii. Industrial tooling and composites iv. Electrical systems and electronics v. Petroleum & petrochemical vi. Consumer and marine applications vii.Aerospace applications viii.Biology ix. Art
- 19. 17-01-2018 MEE411 EPOXYRESINS 19 INDUSTRIES IN INDIA i. Swastik Interchem Private Limited – New Delhi ii. Noble Corporation – Mumbai iii. Paladin Paints and Chemicals Private Limited – Mumbai iv. Umiya Group of Companies – Vapi v. Synpol Products Private Limited – Ahmedabad vi. Fibrex Construction Chemicals Private limited – Faridabad
- 20. 17-01-2018 MEE411 EPOXYRESINS 20 COMMERCIAL NAME i. Liquid Glass - Heritage ii. Lapox Epoxy Resin - Duratite
- 21. 17-01-2018 MEE411 EPOXYRESINS 21 COMMERCIAL NAME i. Araldite Epoxy Barrier Coat ii. Resin & Hardener (High Gloss Epoxy Resin Clear Coat) - Haksons
- 22. 17-01-2018 MEE411 EPOXYRESINS 22 i. https://en.wikipedia.org/wiki/Epoxy#History ii. https://en.wikipedia.org/wiki/Epoxide iii. http://pslc.ws/macrog/eposyn.htm iv. http://processflowsheets.blogspot.in/2011/05/epoxy-resin-manufacturing- process.html v. Fundamentals of Polymers by Niranjan Karak references