Transcript Slide 1

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
Type of material for which process is used
Advantages
Disadvantages
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]
Type of material for which process is used
Typical Preform Fiber Weaves
Polyester resins
Epoxy resins
Phenolic resins and other thermo set resins
[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
Applications
Wing Panel
Truck pannel
boat hulls
wind turbine blades
aircraft radar.
helmet, bathroom fixtures, car body etc
Aerospace parts
References
1.http://www.pdf-search-engine.com/resin-transfer-moulding-pdf.html
2.http://plastics.turkavkaz.ru/processes/molding/transfer-molding/resin/
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]