Aim

• To measure the strength of Araldite 5-minute 2 part epoxy glue using the standard 1cm x 1cm test on PET plastic.

Experiment Setup

The samples were lightly sanded before gluing. The samples were allowed to fully cure for 3 weeks. The standard procedure was used to measure the strength of the glue. Five samples were tested altogether.

Results

	Araldite glue tested
	Samples before testing
	Samples after testing

The following results were obtained from the experiment:

Sample	Breaking Weight (Kg)
1	< 15
2	6.2
3	5.85
4	6.8
5	5.4
Average	6.06

Conclusions / Analysis

• It was quite evident from examining the failed joints that it was the glue not bonding well to the PET plastic. Sample #1 failed as an initial 15kg weight was added before starting to pour the water into the container.
• The strength of the 5 minute epoxy was ~1/5th of the super strength epoxy!
• This glue is not a good candidate for splicing bottles.