Write 5 thermoplastics giving their
characteristics and uses. 15 marks. Do the
same for thermosetting plastic(3 of them)
and give their characteristics and uses. 9
marks.

Answers

Answer 1

Answer:

Acrylic

Acrylic, a polymer called poly(methyl methacrylate) (PMMA), is also known by trade names such as Lucite, Perspex and Plexiglas. It serves as a sturdy substitute for glass for such items as aquariums, motorcycle helmet visors, aircraft windows, viewing ports of submersibles, and lenses of exterior lights of automobiles. It is extensively used to make signs, including lettering and logos. In medicine, it is used in bone cement and to replace eye lenses. Acrylic paint consists of PMMA particles suspended in water.

Nylon

Nylon, belonging to a class of polymers called polyamides, has served as a substitute for silk in products such as parachutes, flak vests and women's stockings. Nylon fibers are useful in making fabrics, rope, carpets and strings for musical instruments. In bulk form, nylon is used for mechanical parts, including machine screws, gear wheels and power tool casings. In addition, nylon is used in the manufacture of heat-resistant composite materials.

Polyethylene

Polyethylene (or polyethene, polythene, PE) is a family of materials categorized according to their density and molecular structure. For example, ultra-high molecular weight polyethylene (UHMWPE) is tough and resistant to chemicals, and it is used to manufacture moving machine parts, bearings, gears, artificial joints and some bulletproof vests. High-density polyethylene (HDPE) is used to make milk jugs, margarine tubs and water pipes. Medium-density polyethylene (MDPE) is used for packaging film, sacks and gas pipes and fittings. Low-density polyethylene (LDPE) is soft and flexible and is used in the manufacture of squeeze bottles, sacks and sheets.

Polypropylene

Polypropylene (PP) is useful for such diverse products as reusable plastic containers, diapers, sanitary pads, ropes, carpets, plastic moldings, piping systems, car batteries, insulation for electrical cables and filters for gases and liquids. In medicine, it is used to repair hernias and to make heat-resistant medical equipment. Polypropylene sheets are used for stationery folders and packaging and storage boxes.

Polystyrene

Polystyrene is manufactured in various forms that have differing applications. Extruded polystyrene (PS) is used in the manufacture of disposable cutlery, CD and DVD cases, plastic models of cars and boats, and smoke detector housings. Expanded polystyrene foam (EPS) is used in making insulation and packaging materials, such as the "peanuts" and molded foam used to cushion fragile products. Extruded polystyrene foam (XPS), known by the trade name Styrofoam, is used to make architectural models and drinking cups for heated beverages. Polystyrene copolymers are used in the manufacture of toys and product casings.

Polyvinyl chloride

Polyvinyl chloride (PVC) is a tough, lightweight material that is resistant to acids and bases. Much of it is used by the construction industry, such as for vinyl siding, drainpipes, gutters and roofing sheets. It is also converted to flexible forms with the addition of plasticizers, thereby making it useful for items such as:

hoses

tubing

electrical insulation

coats

jackets

upholstery

Flexible PVC is also used in inflatable products, such as water beds and pool toys.

Teflon

Teflon is the brand name given by DuPont Corp. for a polymer called polytetrafluoroethylene (PTFE), which belongs to a class of thermoplastics known as fluoropolymers. It is famous as a coating for non-stick cookware. Being chemically inert, it is used in making containers and pipes that come in contact with reactive chemicals. It is also used as a lubricant to reduce wear from friction between sliding parts, such as gears, bearings and bushings.


Related Questions

Diferentiate between natural and capital resources​

Answers

Raw materials come from natural resources and Capital resources are the man-made physical resources. (cars, buildings etc.)

why is it important for students to take drama?

Answers

Students should take drama because of the exposure to various art forms it provides. Also it allows students to be more social and find friends easier if they can share a common interest, drama.

Can I get brainliest please?

There is a clerk at the butcher shop, he is five feet ten inches tall, and he wears size 13 sneakers. He has a wife and 2 kids. What does he weigh?

Answers

Answer:

meat

Explanation:

he is a butcher so his job is to weigh meat.

What part of aesthetics does “impressionistic” art represent?

Answers

Answer:

Impressionism is a 19th-century art movement characterized by relatively small, thin, yet visible brush strokes, open composition, emphasis on accurate depiction of light in its changing qualities (often accentuating the effects of the passage of time), ordinary subject matter, inclusion of movement as a crucial ...

Answer:

"Impressionistic" art represents the cultural context of an era.

Explanation:

Have a good day!

You have been assigned to do a wedding photography. Describe how you will adjust the white balance inside the church and outside in the garden ( write at least 4 sentences plz & ty :( )

Answers

The white balance setting enables the image sensor in your camera to adjust to changes in colour temperature, thus rendering colours accurately to match any prevailing light condition. I would adjust the camera to really capture all the colours in the garden.

define medium, technique, and proportion

Answers

Answer: technique

Explanation:

Answer:

In a fine art context, "art medium" refers to the art materials or artist supplies used to create a work of art. Basically, it's whatever you use to make a mark upon a surface.     the manner and ability with which an artist, writer, dancer, athlete, or the like employs the technical skills of a particular art or field of endeavor. the body of specialized procedures and methods used in any specific field, especially in an area of applied science.    Proportion is the principle of art that refers to relative size. ... Most, if not all of the principles of art deal with how the elements art are arranged in a work of art. Proportion is largely about the relationship of the size of one element when compared to another.

Explanation:

hope this helps :)

A website where entries are made in journal style and displayed in a reverse chronological order is called a _______.
A,) wiki
B.) bliki
C.) email site
D.) blog

Answers

Answer:

A blog .

Explanation:

Answer:

blog

Explanation:

A blog posts are typically displayed in reverse chronological order, so that the most recent post appears first.

What is an important way that social media has had an impact on the culture of the design industry? (Intro to Graphic + Web Design)

A. Pricier design projects
B. More accurate mailing lists
C. Faster print times
D. Immediate feedback on designs

Answers

Answer:

the answer is D immediate feedback on design

Please help me i beg of uuu plzz for Chorus

Answers

Answer:

A

Explanation:

A fermata is a pause of unspecified length!

I'm doing Art for my GCSE. Is anyone else doing Food as a subject media? If so let me know some artists you found that are quite good because I can't find any. Thanks in advance

Answers

Answer:

Explanation:Daniel Hockney,Henri Matisse, Leonard Da Vinci

What additional information is needed for each book entry to follow MLA guidelines?

a word describing the medium
a description of the book’s circulation
the month and day the book was read
the number of pages in the book

Answers

Option A. The additional information that is needed for each book entry to follow MLA guidelines is a word describing the medium

What is the MLA guideline?

MLA Style outlines requirements for creating research citations and structuring manuscripts. Additionally, MLA Style gives authors a way to cite their sources in essays and Works Cited pages using parenthetical citations.

Students must adhere to guidelines established by MLA Style when writing and structuring papers. By writing citations and referencing sources, you may avoid plagiarism in addition to making it easier for your professors to read and understand your work when you use MLA style.

Read more on MLA here: https://brainly.com/question/26110488

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What technical skill is necessary to be a graphic design freelancer?

A. Must be able to edit video in Final Cut Pro
B. Must be able to use the Adobe Creative Suite
C. Must be able to run a printing press
D. Must be able to write JavaScript code in a text editor

(The course I'm taking is Intro to Graphic + Web Design)

Answers

Answer:

Letter B.

Explanation:

Michelangelo and Raphael were commissioned during the High
Renaissance to paint the walls and ceilings of the
O Parliament buildings
Ducal palace
O Hague
Vatican

Answers

Thé Vatican a monument that is precious

Which of the following best describes the subject matter of the Realism period? a. unvarnished truth b. the working class c. subjects that were previously not considered worthy of portrayal in art d. all of the above Please select the best answer from the choices provided A B C D

Answers

Answer:

all of the above

Explanation:

its was in my test yesterday and i got 100 on the test

I will give the brainiest
Why do you think using recycled materials for art is important?

Answers

Answer:

Artists use recycled or reused objects to make attractive pieces of contemporary art and literally turn everyday trash into creative treasures. ... A very famous Artist once said, “Installation Art is good for the environment because it takes everyday objects and transforms it into a valuable artwork.

Explanation:

hope that helps love!

a
Which of the following is not true of the terracotta soldiers?
The terracotta soldiers were found in Shaanxi.
b. The terracotta soldiers were originally painted, however most of the paint has worn away over time.
The emperor guarded by the terracotta soldiers is considered China's strongest leader throughout
all of history,
d. The terracotta soldiers carried spears, swords, daggers, and axes.
C.

Answers

Answer:  C. The emperor guarded by the terracotta soldiers is considered China's strongest leader throughout all of history.

Explanation:

The known false statement about the terracotta soldiers is that The emperor guarded by the terracotta soldiers is considered China's strongest leader throughoutall of history.

Who were the terracotta soldiers?

These were sculptures that were done by the Peasants in one of the provinces of China.

The soldiers were created due to the fact that it was believed that they would guard the emperor in the after life.

Raed more on terracotta here: https://brainly.com/question/2640968

What is composition?

Answers

Answer:

In art, composition is the placement or arrangement of the visual elements, like the placement of a person in the painting or trees.

what he said he’s really smart ya gods luck everyone

what is your fav song

Answers

Answer:

SAD

Explanation:

I just like the sad feeling in the song.

Answer: Motivation by Normani or Changes by Xxxtencation

plant: jupiter
Atmosphere- What is it made up of?
Temperature- Average highs and lows
Revolution- How long does it take to make one revolution around the sun?
Rotation- How long does it take to make one rotation?
Surface features- What does the surface of your planet look like?
Other interesting facts (at least 2)
Picture

Answers

Answer:

Atmosphere: Hydrogen gas and Helium gas

Temp: 145C° (Minus 234 Fahrenheit)

Revo: 12yrs

Rotation: 10hrs

Surface Feat: Thick brown and yellow clouds plus the red eye.

Fact: The Red Eye has been brewing for billions of years

Explanation:

That's all I've got

The School of Athens by Raphael has portraits of Leonardo da
Vinci, Michelangelo, and Raphael himself in it.
O True
O False

Answers

in not 100% sure but is it true?
I believe it’s true

Need help quickly!!!

Answers

Answer:

they chose blue because blue is elegant

blue symbolizes power and wealth

third question is opinionated so its up to you if you would pick a different color

Explanation:

I would choose yellow, as yellow is known to be an uplifting and calm color. Hope this helped if you need more just say so

What kinds of colors were favored by Rococo painters?
A. Dark
B. Delicate
o
C. Vibrant
D. Neon
0

Answers

Rococo painters favored B. Delicate colors

Rococo painters usually used Delicate colors. Thus, the correct answer is option B.

What is Rococo?

Rococo also known as Late Baroque, is an exceptionally ornamental and theatrical style of architecture, art and decoration which combines asymmetry, scrolling curves, gilding, white and pastel colors, sculpted molding, and frescoes to create surprise and the illusion of motion and drama. It is often described as the final expression of the Baroque movement.

Features of Rococo interior design and sculpture included the use of serpentine lines, asymmetry, and curvature. The primary colors used in Rococo art pieces usually involved gold, ivory, and pastels. Rococo differed from the Baroque period in its coloring and inclusion of more light-hearted and secular themes.

Therefore, option B is correct.

To learn more on Rococo, click here:

https://brainly.com/question/29775559

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What additional information is needed for each book entry to follow MLA guidelines? a word describing the medium a description of the book’s circulation the month and day the book was read the number of pages in the book

Answers

Answer:

Explanation:

For MLA format, you will need (not in this specific order) the authors name, date published, the publisher, and the ID of the book...

Honestly if you are trying to write a bibliography using MLA format, use easybib.com.  It really helped me on my National History Fair projects.  It's also very simple to use, and it can do books, online websites, newspapers, everything.  It also does many other formats.

Answer: (A. ) A word describing the medium.

Explanation:

I just took the unit test :)

4. A blanket could be a product of a career in the arts.
O True
False

Answers

Is False I think I am not sure

what principles of design does this image use

Answers

Explanation:

the principle of design are the rules are designer must follow to create an effective and attractive composition. the fundamental principle of design are emphasis comma balance and alignment, contrast , repetition , proportion, movement and white space. design differ from art in that it has to have a purpose .

How are scales and chords notated differently in TAB?

Answers

Answer:

TAB shows which frets to play on which string.

Explanation:

TAB is usually easier to read than regular scales and notes. It shows the specific fret you play on the specific string instead of the clef and note.

Tab usually is for guitar and is has 6 lines denoted for the strings of the guitar. Instead notes, you would see the number of the fret you are supposed to play on.

Attached is a TAB I made for a specific song.

what is the origin of Rap? Please help I have to send before wenesday!

Answers

Rap and Hip hop today as we know it basically started in the 70s in New York City with a young man named DJ Kool Herc who basically invented hip-hop DJing,during a back to school party in 1973,DJ Kool Herc's set he tried something new he called “merry go round”.

Answer:

Rap as a genre began at block parties in New York City in the early 1970s, when DJs began isolating the percussion breaks of funk, soul, and disco songs and extending them. MCs tasked with introducing the DJs and keeping the crowd energized would talk between songs, joking and generally interacting with the audience.

Explanation:

this is more of a personal question for people who have been in a musical or play before, what did you do when wanting to audition for a musical but too scared, because of anxiety, to and how did you get over your anxiety?

Answers

Answer:

-Become familiar with the stage if possible . Its a lot less intimidating when the lights aren't all on you.

-Focus on what your character is thinking and feeling rather than the audience . The stage lights will help with this too, but it is a lot easier to panic and overthink when you remember them.

-Its ok to be afraid. Theres been so many times that myself and others will look calm on stage, only to quietly freak out once they get back stage . After my first play I had cried in the greenroom due to stress, but I'd never trade the experience of doing those plays.

-Never ever practice your lines or audition out of order. When you panic youll be more likely to mess up. Breaking it up into scenes is fine, if you get into the play, but for the audition always do it from beginning to end.

-Know that the people watching are just that, people. Its freaky to think someone could find fault in anything you do, but at the end of the day theyll only remember it if its good.

-Think about how worthwhile the experience will be. Knowing "why" is just as important as knowing "how", especially when you need that extra motivation

If you have any other questions feel free to message me. I had done theater all four years of high school, total of 5 plays and 1 musical, and one college class afterwards. Good luck, deep breaths, I know youll do great!

Explanation:

what is your fav DCI show?

for marching band kids

Answers

Answer:

1996 - Phantom Regiment (Tied for 1st - 97.4)

Answer:

1997 Blue Devils

Explanation:

how can I get on america's got talent?

Answers

Just sign up in the website

Answer:

have a talent

Explanation: common sense

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