Thermoplastics:

Substances (esp. synthetic resins) that become plastic on heating and harden on cooling and are able to repeat these processes

OR

A type of plastic that can be softened by heat, hardened by cooling, and then softened by heat over and over again.

Properties of Thermoplastics:
Thermoplastics have wide ranging properties.
- They can be very much like rubber, or as strong as aluminium.
- are light in weight,
- Can withstand temperature extremes of up to 600 F, while others retain their properties at -100 F. Some
- Thermoplastic materials have no known solvents at room temperature.
- Most thermoplastic materials are excellent insulators, both electrical and thermal.
- Are recyclable materials that are used frequently today to create objects such as foam cups, polyethylene squeeze bottles, acrylic lenses and safety helmets.
- In general the combination of light weight, high strength, and low processing costs make thermoplastics well suited to many applications.

Uses:
- They are useful for a variety of applications, including consumer goods, machine parts, medical equipment and packaging and storage materials.

Examples:
• PVC/Vinyl
• Polystyrene
• Polyethylene
• Cellulose Acetate
• PTFE/Teflon
• Nylon/Polyamide
• Polyester

Synthetic Polymers:

Polymers are composed of very large molecules (macromolecules) formed by linking together many smaller, more simple units called monomers. There can be as few as five or as many as several thousand monomers units in a polymer. There are a large number of synthetic polymers prepared and in use. Some of these are polyamides(nylon), polyethylene, propylene, polyvinylchloride, synthetic rubber, cellulose acetate, cellulose nitrate and silicones.

A little effort from my side to save the time....

INDEX OF THIS THREAD

Page 1
Abbreviations
Units
Discoveries/Inventions-Scientists
Physical Quantity—Instrument For Measurement:


Page 2
Information For The Objective Portion Of The Paper: It Includes Past Papers


Page 3
Information For The Objective Portion Of The Paper: It Includes Past Papers

Page 4
SCIENTIFIC REASONS FROM PAST PAPERS (95 To 2011):
DIFFERENCES FROM PAST PAPERS (1994)
DIFFERENCES FROM PAST PAPERS (1995)
DIFFERENCES FROM PAST PAPERS (1996)
DIFFERENCES FROM PAST PAPERS (1997)

Page 5
DIFFERENCES FROM PAST PAPERS (1998)
DIFFERENCES FROM PAST PAPERS (1998 & 99)
DIFFERENCES FROM PAST PAPERS (2000 & 2001)
DIFFERENCES FROM PAST PAPERS (2002)
DIFFERENCES FROM PAST PAPERS (2003)
DIFFERENCES FROM PAST PAPERS (2004)
DIFFERENCES FROM PAST PAPERS (2005)
DIFFERENCES FROM PAST PAPERS (2006)
DIFFERENCES FROM PAST PAPERS (2007)

Page 6
DIFFERENCES FROM PAST PAPERS (2008)
DIFFERENCES FROM PAST PAPERS (2009)
DIFFERENCES FROM PAST PAPERS (2010)
DIFFERENCES FROM PAST PAPERS (2011)
Solar System
Planets And Their Characteristics:
Short Note (Solar System)
Some Important Definitions:
Balanced Diet:
Functions Of Vitamins:
Minerals: Their Functions, Source and Sings Of Deficiency:

Page 7
Computer:
Energy:
Short Notes (Energy)
Greenhouse Effect:
Global Warming:
Ozone Depletion:
Acid Rain:
Environmental Pollution:
Water Pollution:
Deforestation:


Page 8
Earth:
Atmosphere:
Latitude:
Longitude
Earthquake:
Volcanoes:
Rocks:
Branches Of Biology:
Characteristics Of Living Organisms:
Virus:
Bacteria:
Cell:
Difference Between Animal And Plant Cell:

Page 9
Cell Division:
Mitosis:
Meiosis:
Classification Of Plants:
Flower & Its Parts:
Parts Of Plants:
Photosynthesis:
Pollination:
Fertilization:
Animals:
Ecosystem:
Heredity:
Gene:

Page 10
Chromosomes:
Genetic Engineering:
Biotechnology:
Teeth:
Antibody:
Hemophilia:
Important Facts About Human Physiology:
Brain:
Reflex Action:

Page 11
Thermoplastics:
Synthetic Polymers:

WAP Wireless Access Point

Mho: is not a unit of Conductivity but it is unit of Conductance
so,

Mho: Conductance

__________________
we live in deeds not in years.

53. LONAR: Long Range Navigation is wrong. Correct one is

LORAN: Long Range Navigation

__________________
we live in deeds not in years.

69. MNP: Mobile Number Probability
81. NPT: Non-Nuclear Proliferation Treaty

these are as

MNP: Mobile number portability
NPT: Nuclear Non-Proliferation Treaty

__________________
we live in deeds not in years.

87. Unit of electricity “Kilowatt Hour” is not unit of Power.

87. Unit of electricity “Kilowatt Hour” is unit of ENERGY.

__________________
we live in deeds not in years.

425. Television signals are converted into light signals by Transistor. Wrong
425. Television signals are converted into light signals by Diodes(LEDs).

__________________
we live in deeds not in years.

Photo diodes

__________________
"Dreams" are not those which are seen during sleep.
Dreams are those which 'll never let you sleep.

@ roshan wahdani
your efforts are so remarkable and appreciable
hope you will be carry on for the betterment of other members in future also

Contradictions: Objective Portion.

First..
50-- Gas in children’s play-balloons going upward is hydrogen.

599- Helium gas is commonly used in balloons and airships

2nd..

61-- Uranus is the coldest planet.


204-- Neptune is the coldest planet of the solar system.

3rd..

122- Blue color has the shortest wave Length.

688-- Violet has the Shortest wave length.



Correction.

696-- Heavy water consists of Oxygen and heavy hydrogen.

Heavy Water composition is Deuterium 2 and Oxygen. D2O if I am not wrong.

__________________
Prejudice is an opinion without judgment. Voltaire my hero