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Sunday, 23 October 2011

plastic Injection Molding, Thermosets, Thermoplastics, Polymers

This video will explain you that how the plastic injection molding works.

Plastic injection molding is the method which is mainly used to manufacture parts of thermosetting also thermoplastic materials. In this molding work, the scrap material is put into a box. temperature is given to that box  so as to get a plastic design.
Plastic injection molding is generally used to manufacture car parts, and can be utilized so as to get large car parts as well as small parts. 


The essential difference is that thermoplastics remain permanently fusible so that they will soften and eventually melt when heat is applied, whereas cured thermoset polymers do not soften, and will only char and break down at high temperatures. This allows thermoplastic materials to be reclaimed and recycled.
The reason for this is that thermoplastics have relatively weak forces of attraction between the chains, which are overcome when the material is heated, unlike thermosets, where the cross-linking of the molecules is by strong chemical bonds. Effectively the thermoset is one large molecule, with no crystalline structure.
Compared with thermoplastics, thermosets are generally harder, more rigid and more brittle, and their mechanical properties are not heat sensitive. They are also less soluble in organic solvents.

5 comments:

yugender said...

your provided a nice information
We manufacturesTablet Press, Tablet Press machine, Rotary Tablet Press, Pharmaceutical machinery, Tablet Dies and Punches.

Mechanical Engineering said...

Great video, really helped a great in understanding the concept.

plumbing said...

Many mechanical engineering companies, especially those in industrialized nations, have begun to incorporate computer-aided engineering programs into their existing design and analysis processes, including 2D and 3D solid modeling computer-aided design. This method has many benefits, including easier and more exhaustive visualization of products, the ability to create virtual assemblies of parts, and the ease of use in designing mating interfaces and tolerances.

Liam Manning said...

Thank you so much for the helpful video! My friend wants to work as a mechanical engineer in calgary and has in turn got me fairly interested in it as well. What advice do you have to offer someone looking into this? Thanks for your input and I look forward to more great videos!

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