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 /