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PRESENTATION ON RESIN TRANSFER MOLDING(RTM)
Presented By: Sarpate
chandraparakash S.2008AMD 2932
Dept. of Applied Mechanics, IIT Delhi
CONTENTS
History
Resin Transfer molding set up and description
Advantages
Disadvantages
Type of material for which process is used
Properties of the material which affect by RTM process
Applications of resin transfer molding
HISTORY
developed by a US navy contract for the development of 28-ft long personal boat in 1946
Harold John Pollard and John Rees in between 1952 – 1956 plant for fibers and asbestos
fully developed for general aerospace applications in the 1980s
Types :- LCM,RIM,SRIM,RRIM,RTM
RTM SET UP
[Image courtesy:-(1)]
STEPS IN RTM PROCESS
[image courtesy:-www.engr.ku.edu]
Typical Preform Fiber Weaves
Polyester resins Epoxy resinsPhenolic resins and other thermo set resins
Type of material for which process is used
[image courtesy:-www.engr.ku.edu]
Advantages
Design Flexibility
Faster Production
Labor Savings
Dimensional Tolerances
Surface Finish
Lower Material Wastage
Very large and complex shapes can be made efficiently
Disadvantages
Greater Tooling Design and Construction Skills Required
Higher Tool Cost
Reinforcement loading may be difficult with complex parts
Mold design is complex
Properties of the material which affect by RTM process
Density
Strength
Notched and Unnotched lzod Impact Strength increases
ApplicationsWing Panel
Truck pannel
Aerospace parts
boat hulls
wind turbine blades
aircraft radar.
helmet, bathroom fixtures, car body etc
References
1.http://www.pdf-search-engine.com/resin-transfer-moulding-pdf.html
3.Applications of Resin Transfer Molding Roger Rowell1 and Jane O’Dell R. K. Basak and M. Sarkar]
4[The early history of the resin transfer moldings process by K.D. Potter Aerospace Engineering Department, University of Bristol, Queen’s Building, University Walk, Bristol BS8 1TR, UK]
2.http://plastics.turkavkaz.ru/processes/molding/transfer-molding/resin /