Polymers
Gbogbo ọrọ náà
Polymers are the second great family of graphic materials. Where paper and card give a printable, foldable surface, polymers give transparency, waterproofing, flexibility and durability that fibre cannot. A clear drinks bottle, a laminating pouch, a self-adhesive vinyl shop sign, a polypropylene presentation folder and a 3D-printed model are all graphic products made from polymers. For the designer, the skill is knowing which named polymer gives the right balance of clarity, toughness, cost and recyclability.
This note covers the graphic-products polymer objectives: how polymers are classified into thermoplastics, thermosets and biopolymers; the stock forms (sheet, film, board, granule, resin) that the graphic designer actually buys; the properties that decide a choice; the named polymers from PET to PLA and from PVC to epoxy resin and what each is used for; and the environmental questions that now shape every polymer decision. The named materials are the heart of the syllabus, so each one is given a clear identity, property and use.
Ebumnobi
- demonstrate knowledge of polymers, including biopolymers, and understand their classification, stock forms, properties, environmental impact and uses
- demonstrate knowledge of thermo polymers, for example: - nylon - low- and high-density polyethylene (LDPE and HDPE) - polyethylene terephthalate (PET) - polyvinyl chloride (PVC) (including self-adhesive vinyl) - acrylic (PMMA) - polystyrene (PS) - polypropylene (PP) - acrylonitrile-butadiene-styrene (ABS) - polylactic acid (PLA)
- demonstrate knowledge of the following thermosetting polymers: - polyester resin - epoxy resin.
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Polymers. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which statement correctly describes a thermosetting polymer? A. It can be softened and reshaped many times B. It sets hard once and cannot be remelted C. It is always made from plant sources D. It is the easiest type of polymer to recycle Answer: B
- Which polymer is most commonly used for clear, lightweight drinks bottles? A. PVC B. HDPE C. PET D. Polyester resin Answer: C
- Self-adhesive vinyl used for vehicle graphics and shop-window signs is a film made mainly from which polymer? A. Acrylic (PMMA) B. PVC C. LDPE D. ABS Answer: B
- Which property of polypropylene makes it ideal for the living hinge in a document folder? A. Optical clarity B. High melting point C. Resistance to repeated flexing (fatigue resistance) D. Electrical conductivity Answer: C
- Which statement about the biopolymer PLA is correct? A. It is made from crude oil B. It is renewable and compostable only in industrial conditions C. It cannot be used in 3D printing D. It biodegrades quickly in any environment including the sea Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Polymers? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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