Question

Cʜ - Sʏɴᴛʜᴇᴛɪᴄ Fɪʙʀᴇs ᴀɴᴅ Pʟᴀsᴛɪᴄs

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Q1 :- Differentiate between thermoplastics and thermosetting plastics. Give one example of each
type.

Q2 :- How is rayon made ? Give its important properties and uses.

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⭐ɢᴜɪᴅᴇʟɪɴᴇs ᴛᴏ ʙᴇ ғᴏʟʟᴏᴡᴇᴅ:-⭐

➻ ᵖˡᵃᵍⁱᵃʳⁱˢᵐ ᵒʳ ˢᵖᵃᵐᵐⁱⁿᵍ ʷᵒⁿ'ᵗ ᵇᵉ ᵉⁿᵗᵉʳᵗᵃⁱⁿᵉᵈ ᵃᵗ ᵃⁿʸ ᶜᵒˢᵗ.

➻ᵘˢᵉʳ'ˢ ⁱᵈ ʷᵒᵘˡᵈ ᵇᵉ ʳᵉᵖᵒʳᵗᵉᵈ ᵒⁿ ᵗʰᵉ ˢᵖᵒᵗ ⁱᶠ ᵃⁿʸᵒⁿᵉ ᵗʳⁱᵉˢ ᵗᵒ ᶠˡᵒᵘᵗ ᵗʰᵉ ᵍᵘⁱᵈᵉˡⁱⁿᵉˢ.

➻ᵗʰᵉ ᵇᵉˢᵗ ᵃⁿˢʷᵉʳ ʷᵒᵘˡᵈ ᵇᵉ ˢᵉˡᵉᶜᵗᵉᵈ ᵃˢ ᵗʰᵉ ᵇʳᵃⁱⁿˡⁱᵉˢᵗ!⭐

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Answer 1

Answer:

Though thermoset plastics and thermoplastics sound similar, they have very different properties and applications. Understanding the performance differences can help you make better sourcing decisions and improve your product designs.

The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a permanent solid state. Think of thermoplastics as butter – butter can be melted and cooled multiple times to form various shapes. Thermoset is similar to bread in that once the final state is achieved, any additional heat would lead to charring.

Thermoset

Thermoplastics

Thermoset Curing Process

Thermoset plastics contain polymers that cross-link together during the curing process to form an irreversible chemical bond. The cross-linking process eliminates the risk of the product remelting when heat is applied, making thermosets ideal for high-heat applications such as electronics and appliances.

Thermoplastics Curing Process

Thermoplastics pellets soften when heated and become more fluid as additional heat is applied. The curing process is completely reversible as no chemical bonding takes place. This characteristic allows thermoplastics to be remolded and recycled without negatively affecting the material’s physical properties.

Features & Benefits

Thermoset plastics significantly improve the material’s mechanical properties, providing enhances chemical resistance, heat resistance and structural integrity. Thermoset plastics are often used for sealed products due to their resistance to deformation.

Features & Benefits

There are multiple thermoplastic resins that offer various performance benefits, but most materials commonly offer high strength, shrink-resistance and easy bendability. Depending on the resin, thermoplastics can serve low-stress applications such as plastic bags or high-stress mechanical parts.

Pros

More resistant to high temperatures than thermoplastics

Highly flexible design

Thick to thin wall capabilities

Excellent aesthetic appearance

High levels of dimensional stability

Cost-effective

Pros

Highly recyclable

Aesthetically-superior finishes

High-impact resistance

Remolding/reshaping capabilities

Chemical resistant

Hard crystalline or rubbery surface options

Eco-friendly manufacturing

Cons

Cannot be recycled

More difficult to surface finish

Cannot be remolded or reshaped

Cons

Generally more expensive than thermoset

Can melt if heated

and 2Rayon is called artificial silk because it is produced from naturally occurring polymers and looks like silk. The important properties of rayon fibres are: a) They are easier to dye in various colours. b) They are very comfortable in summer because they can absorb sweat from the body.