Assignment 10

Composits

Introduction

Composites are formed by combining materials together to form an overall structure with properties that differ from that of the individual components. The new material may be preferred for many reasons. Common examples include materials which are stronger, lighter, or less expensive when compared to traditional materials.

Composite materials are generally used for buildings, bridges, and structures such as boat hulls, swimming pool panels, racing car bodies, shower stalls, bathtubs, storage tanks, imitation granite and cultured marble sinks and countertops.



Materials needed

The following materials are required for composite making.



The Process


Step 1 : Making the mixture- To form the pouring mixture for the composite we first mix the resin and the hardener in the ratio of 2:1 and then mix them using a spatula until its gives off some heat.


Step 2 : Preparing the various materials to be used in the mixture. Here we take the materials, clean them and then cut thenm in the desired sizes.


Right view

Right view

Step 3 : Then we pour the mixture into the layers and spread them. We apply the next coat and use another material on top and again apply one layer of the mixture. We continue the process till desired.


Step 4 : We then keep wipe off the excess mixture and keep the composite pressed under two kitchen foil coated plane surfaces with a heavy weight on top.


Right view

Step 5 : We let it dry for around 2-3 days and take out our composite and laser cut it according to our need.


Final Image

Right view

Problem Faced

The surfaces used below and above the composite to hold in place while making it should be coated with a kitchen foil so that the composite doesnt stick to the surfaces.


Enough weight must be used on top of the composite when kept for hardening otherwise we wond get a strong and good finished product.


The ratio of the resin and the hardener should be kept in mind.