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

What claim is Childish Gambino making about the plight of African Americans in America?
(From the song this is America) Please use evidence from the lyrics and music video to justify your answer.
(I attached the lyrics)

Answers

Answer:

Based on the music video, Childish Gambino depicts the story of black oppression, police brutality, and Jim Crow. The song is also a message that America claims to be home of the free, but it's not free for us (the African American/Black) community.

Childish Gambino is claiming in this song about police brutality, black oppression and Jim crow. It is giving a message about how America is not free for the African American community.

Who is Childish Gambino?

Childish Gambino is the stage name for Donald McKinley Glover Jr. He is born on 25 September 1983 and he is an American actor, rapper, singer, writer, comedian, director and producer. He was hired at the age of 23 by Tina Fey as a writer for the sitcom '30 Rock'.

He rose to fame for portraying college student Troy Barnes on the NBC sitcom 'Community' from 2009-14. Glover also starred in the FX series Atlanta since 2019 which was created by him and he directs sometimes occasionally. He won two primetime Emmy awards and two golden globe awards for his work in Atlanta.

He starred in many successful films such as 'The Lazarus Effect', 'Magic Mike XXL', 'The Martian'.

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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 time period do children celebrate when they go with their art class to practice their Impressionist painting skills? A. June 6 B. 500 BC C. 11th century D. 1860's

Answers

The correct answer is D. 1860's

Explanation:

Impressionism was an important modern movement in painting that focused on depicting spontaneous realistic scenes. For example, impressionism would focus on people in a park. Additionally, impressionist paintings stand out because impressionism uses the contrast of color and quick brush strokes that simulate light and movement. In terms of history, this movement emerged in France during the last 19th century, around the 1860s and through artists such as Claude Monet. Thus, the period celebrated when children practice impressionist painting skills is the 1860s.

Answer:

D. 1860's

Explanation:

Impressionism was an art movement that took place in the 1860's in France. Some examples of Impressionist painters include Monet, Degas, Manet, and Matisse.

Hope this helps :D

__________ are used in place of writing checks. The amount you spend using this card will be deducted from your checking account.

Answers

CREDIT CARDS are used in place of checks. The amount you spend using this card will be deducted from your checking account.

Which statement about Chinese, Persian, Greek, and Moche vessels is true?


They rarely depicted figures of animals.


They were made of carved and painted marble.


They could be used in various rituals.


They were placed in tombs of the poorest citizens.

Answers

Answer:

c the 3rd one

Explanation:

Answer:

they could be used in various rituals

Explanation:

Ben works full time as a designer but is looking to increase his earnings by doing freelance projects after work and on weekends. What is the best online option for him? (Intro to Graphic + Web Design)

A. Sending out tweets
B. Entering design contests
C. Writing a blog
D. Recording a podcast

Answers

Answer:

I think it is sending out tweets.

Explanation:

I don't see how writing a blog can get you money.

Entering design contests will only get you money if it is a prize and you win/earn it.

recording podcasts I don't think really give you money and if you are a full time designer, people need to be able to see your art/product.

this is why A) sending out tweets makes sense b/c lots of people use social media and by creating a business account Ben will be able to get recognition from other people and be able to be offered projects. in art, being known is important because without people knowing who you are, your job is pretty much nothing (my opinion, please don't get upset or anything).

Sending out tweets is the correct answer

Who expanded the Palace of Versailles to its present size? a. Louis X b. Louis XIV c. Georges de la Tour d. Antoine Le Nain Please select the best answer from the choices provided A B C D

Answers

Answer:

Louis XIV or B. Louis XIV

Louis XIV expands the Palace of Versailles to its present size. Thus the correct option is B.

What is the Palace of Versailles?

The Palace of Versailles, a historic seat of administration and a royal palace for France, is today a recognized landmark. It served as a prototype for the ideal royal residence in Europe, developed by multiple generations of builders, sculptors, decorators, and landscape architects.

From Louis XIV to Louis XVI, the Palace of Versailles served as the French kings' primary residence. Venice controlled mirror production during the time the palace was built.

As a symbol of the pleasures and incompetence of the king and queen at the start of the French Revolution, the Palace of Versailles was crucial in the views of the third estate.

Therefore, option B is appropriate.

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What might the phrase “Lean on Me” mean in the song?

Answers

Answer:

Lean On Me is a song about asking for help when you need it. People aren’t meant to suffer in isolation and the singer is telling his friend that anytime he’s in trouble he only needs to call for help, but he can’t know to help if his friend doesn’t speak up.

Answer:

To be there for someone

Explanation:By saying Lean on me, the person is essentially saying he will be there for you, that they will help if you need anything.

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.

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Most of the communication that takes place in the novel is by...

Answers

Answer:

ok

Explanation:

Answer:

c, letter

Explanation:

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:

state 10 uses of basket

Answers

Answer:

Baskets in general can be used for:

pantry items

toys

Everyday Essentials

Bathroom Essentials

Recycling Bottles

Cellar Storage

Root veggies (root vegetables, such as onions, potatoes, and garlic, in square baskets that slide right into your cabinets)

Towels

hold dirty laundry.

storage

Explanation:

discuss the poem the leader and the led as a satire​

Answers

Answer:

Summary of the poem The Leader and The Led.

Explanation:

answer :The author uses an example of the forest and the animals in it to give a clear meaning of the leader and the led.

He identifies the power of each animal and the position it takes in the jungle. Most of his examples are those of animals that lead and the ones that are concurred.

He gives us the weakness of each animal despite its strengths.

For instance he talks about the lion which is king of the jungle and the antelope which falls prey to the lion.

He concludes by saying that a true leader should have a mixture of the qualities possessed by the animals.

hope this helps !! :)

Who is the president of Nigeria​

Answers

Answer:

Muhammadu Buhari

Explanation:

Answer:

erm

Explanation:

I'm like 100% sure it's Muhammadu Buhari

or at least something along those lines

BRAINLIST! ALL HAS TO BE CORRECT!

(BLANK)

and body language play a major role in conveying the meaning of a dialogue or an action to the audience.


Sharon wants to watch a play that deliberately expresses a bleak subject humorously. What kind of play does she want to watch?

A.

tragedy

B.

drama

C.

dark comedy

D.

improvisation


(BLANK) is an art that involves performing in front of a live audience to portray a real or imagined event.


Heather is doing a five-year performing arts course that confers a bachelor’s and a master’s degree. What kind of program is she a part of?

A.

associate degree

B.

undergraduate

C.

graduate

D.

integrated

Answers

1. The answer is c
2. The answer is c

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 .

This work of art is the first known work to show perfect one
point
isometric perspective
atmospheric perspective
linear perspective
foreshortening

Answers

I believe it’s Linear perspective

Gaze at this sentence for just about sixty seconds and then explain what makes it quite different from the average sentence. Quick!

What is it?

Answers

The sentence has all the letters of the alphabet

how can I get on america's got talent?

Answers

Just sign up in the website

Answer:

have a talent

Explanation: common sense

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

10 PTS! HELP! What is the medium used in this artwork?

Answers

Answer:

my best guess is a pencil portrait

The medium being used appears to be red chalk.

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

Which of the following is the most important consideration when starting a freelance business?

A. Vacation time
B. Overtime
C. Earnings
D. Team members

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

Answers

Answer:

I think it is D) Team members

Explanation:

When starting a freelance business, or any business of that matter, the people you work with is an important factor to take into consideration. You need to know the people you are working with, understand their business ethic and know if they are a positive impact to your business or a drag.

It isn't vacation time because while keeping your body refreshed and avoiding burning out, while you are doing nothing, your business is doing nothing.

Overtime is nice because you are getting that work in but remember breaks are important. also over time is for not if you are doing the work all on your own.

I am not really sure about the answer your earnings so I tried to make the most sense out of the other options.

When starting a freelance business, by process of elimination, your team members are very important. depending on who you choose to be with you in your business, they will help you or hurt you when it comes building your kingdom.

d) Team members is the correct answer

how did the social or political environment influence the creation of this artwork

Answers

Answer:

The Aztecs were defeated by the Spanish, who I believe made the Aztecs think they could trust them. They attacked them. This incident can lead to many different emotions that people may want to express somehow, possibly through arts

Explanation:

Which styles of guitar playing were part of early hip-hop music?
a)blues and jazz
b)flamenco and Cuban
c)funk and rhythm
d)pizzicato and arpeggio

Answers

Answer:

Funk and Rhythm

Explanation:

I took the test :))

HELP ASAP! (MUSIC) In both common time and cut time the quarter note gets the beat. True or False

Answers

False

the reasoning for this is that the eight-note gets counted in cut time

According to the music statement, in both common time and cut time the quarter note gets the beat. This statement is false.

What do you understand by the notes in music?

A note in music is a symbol for a musical sound. In musical notation, notes can stand in for the pitch and duration of a sound. A pitch class can also be represented by a note.

Two notes that have fundamental frequencies that are proportionate to any integer power of two (for example, half, twice, or four times) are heard as being highly similar.

All notes with these kinds of associations can therefore be categorized under the same pitch class.

Therefore, according to the music statement, in both common time and cut time the quarter note gets the beat. This statement is false.

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is an influence or authority over other people, territories, or nations.
a
Social protest
C.
Political power
b. Political motive
d. Social commemoration
Please select the best answer from the choices provided
OA
B
С

Answers

Answer:

C

Explanation:

got it right on edge

Political power refers to the ability to influence or control the decisions and actions of individuals, groups, territories, or nations. Hence option C is correct .

What is Politicall Power ?

It can be wielded by those in positions of formal authority, such as elected officials or heads of state, as well as by those with informal influence, such as community leaders or influential public figures.

Political power can be exercised through a variety of means, such as the use of force, coercion, persuasion, or negotiation. It can also be expressed through the use of symbolic power, such as the control of media narratives or the manipulation of cultural norms and values.

Political power is an essential aspect of governance, as it enables individuals or groups to shape the policies and practices that affect society. It is also a source of conflict and contestation, as different actors compete for control and influence over political processes and institutions.

Overall, political power is a complex and dynamic concept that plays a crucial role in shaping the social, economic, and political landscape of any society.

Hence The best option is C Political power.

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Need Help ASAP!!! Plz!!! ;(

Answers

Answer:

i can barely see

Explanation:

How many beats does a sixteenth note receive?​

Answers

A sixteenth note received 4 beats.

Answer:

4 beats

Explanation:

i used to be in band so good luck

Why would the painting above be considered Baroque? a. The dresses of the woman and child are extremely ornate and fancy. b. Emotion is present in the face of the mother and there is a strong contrast between the figures in the foreground and the dark background. c. The details of rich patterns and fabrics create emotion in the image. d. The painting was done by an extremely famous Baroque artist. Please select the best answer from the choices provided A B C D

Answers

The painting above is considered Baroque Because Emotion is present in the face of the mother and there is a strong contrast between the figures in the foreground and the dark background. Therefore option B is Correct.

What is an Emotion?

Emotions are how people react to things or events that have personal significance to them, according to the American Psychological Association (APA), which defines emotion as "a complex reaction pattern, comprising experiential, behavioral, and physiological elements.

The lists change according to the researcher's area of interest as they attempt to pinpoint the fundamental emotions. Some lists concentrate on molecules, while others examine facial expressions, connections between cultures, or behaviors.

Hence, The painting above is considered Baroque Because Emotion is present in the face of the mother and there is a strong contrast between the figures in the foreground and the dark background.

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