Ben Humphries PD -- I am a student studying at John Cabot Academy 6th Form. This Blog shows my pieces of Product Design work !
Monday, September 30, 2013
Thursday, September 26, 2013
Polymer Notes and Homework
Polymers - Plastics
Polymers are created by the joining of monomers (polymerisation).
2 Types Thermosetting and thermoplastic
Thermosetting - are only molded once, non-recyclable and there are links between polymers to stop them moving its to complex.
Thermoplastics - can be reshaped if they are reheated many times and are more common.
General Properties of Polymers:
Good conductrors and insulators
Strong for the weight of the product
Good resistance to chemicals
Low melting point
Lightweight and durable
Ways of improving properties of polymers:
Fillers- are added to give it extra bulk and make it cheaper.
Flame Retardants - when the fire is present they slow down the spread of the fire
Anti-static agent - reduces static charge build up.
Stabalisers - reduces the effects of UV Light onto plastics
Thermo-Polymers:
ABS - Acrlonite butadine styreine
CA - Cellulose Acetate
Nylon - Polymide
PMMA - Acrylic
PP- Polypropellene
PS- Polystyrene
PE- Polyethelene
PVC- Polyvinalchloride
PET- Polyethelene Terepheluate
PC-Polycarbonate
Thermosetting Plastics:
Expoxy Resins- Adhesives.
Melamine Formaldehyde- Tables.
Polyester Resins- Castings used in GRP.
Urea Formaldehyde - Electrical Fittings and adhesives.
Homework:
Injection molding process:Plastic in the form of granules is melted until soft enough to be injected under enough pressure to fill a mould.
The result is that the shape is exactly copied. Once the plastic moulding has cooled enough to harden the mould opens releasing the part.
The main reasons for using a mould are:
Quicker
Safer
Faster
More Accurate
You can produce more efficiently
Polymers are created by the joining of monomers (polymerisation).
2 Types Thermosetting and thermoplastic
Thermosetting - are only molded once, non-recyclable and there are links between polymers to stop them moving its to complex.
Thermoplastics - can be reshaped if they are reheated many times and are more common.
General Properties of Polymers:
Good conductrors and insulators
Strong for the weight of the product
Good resistance to chemicals
Low melting point
Lightweight and durable
Ways of improving properties of polymers:
Fillers- are added to give it extra bulk and make it cheaper.
Flame Retardants - when the fire is present they slow down the spread of the fire
Anti-static agent - reduces static charge build up.
Stabalisers - reduces the effects of UV Light onto plastics
Thermo-Polymers:
ABS - Acrlonite butadine styreine
CA - Cellulose Acetate
Nylon - Polymide
PMMA - Acrylic
PP- Polypropellene
PS- Polystyrene
PE- Polyethelene
PVC- Polyvinalchloride
PET- Polyethelene Terepheluate
PC-Polycarbonate
Thermosetting Plastics:
Expoxy Resins- Adhesives.
Melamine Formaldehyde- Tables.
Polyester Resins- Castings used in GRP.
Urea Formaldehyde - Electrical Fittings and adhesives.
Homework:
Injection molding process:Plastic in the form of granules is melted until soft enough to be injected under enough pressure to fill a mould.
The result is that the shape is exactly copied. Once the plastic moulding has cooled enough to harden the mould opens releasing the part.
The main reasons for using a mould are:
Quicker
Safer
Faster
More Accurate
You can produce more efficiently
Thursday, September 5, 2013
Assignment One - I Should never have purchased !
The BukCase
This is the BukCase which is a product that my parents purchased for me last year.
They purchased the Bukcase because on the internet the product looked good and was aesthetically pleasing due to the book look given by the side panels. Also the fact that all the edges were smooth and nicely presented, however it did not fit the purpose! When we went to fit the iPad into the case it kept slipping out. This was due to a serious design flaw that the corner pieces were not strong enough to hold the iPad in place for more than a few seconds at a time. This was clearly a big issue and this left me with a product that looked good but did not perform the function that I was after. This was due to a poor design that needed to be adjusted to make the product function correctly and make it able to perform the functions that I required from the product. Another feature of the product that made me want the product initially was the fact that it claimed to be made out of plywood and that the product was also hand crafted which gave me a reason to trust that the product was going to be good quality due to the fact that the designer (Waqar) had to make the product himself giving me the assurance that he checks the quality of the product before he gets them packaged up and sent out to their customers.
This is the BukCase which is a product that my parents purchased for me last year.
They purchased the Bukcase because on the internet the product looked good and was aesthetically pleasing due to the book look given by the side panels. Also the fact that all the edges were smooth and nicely presented, however it did not fit the purpose! When we went to fit the iPad into the case it kept slipping out. This was due to a serious design flaw that the corner pieces were not strong enough to hold the iPad in place for more than a few seconds at a time. This was clearly a big issue and this left me with a product that looked good but did not perform the function that I was after. This was due to a poor design that needed to be adjusted to make the product function correctly and make it able to perform the functions that I required from the product. Another feature of the product that made me want the product initially was the fact that it claimed to be made out of plywood and that the product was also hand crafted which gave me a reason to trust that the product was going to be good quality due to the fact that the designer (Waqar) had to make the product himself giving me the assurance that he checks the quality of the product before he gets them packaged up and sent out to their customers.
Subscribe to:
Posts (Atom)