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Classificació dels diferents tipus
de fibres existents
Natalia, Nayra, Regina i Marta
Explicació:
• Fibres naturals: es divideixen en vegetals ,animals i
mineral:
Vegetals: la cel·lulosa és el component bàsic i són
característiques per ser suaus al tacte.
Animals: s’obtenen del pèl de diferents animals i es composen
principalment de proteïnes.
Mineral: Només hi ha una l’amiant, que destaca per la seva
incombustibilitat encara que l'amiant, actualment, no s'utilitza
perquè les seves fibres són molt perjudicials per a la salut en cas
d'inhalació.
Explicació:
• Fibres artificials: no es descomponen en cap tipus de
fibra, i s'obtenen a partir de la transformació de
productes naturals a partir de cel·lulosa i es
caracteritzen per la seva uniformitat i la suavitat al
tacte
• Fibres sintètiques: tampoc es descomponen en
altres tipus de fibres, s'obtenen de tres fonts
principals: la cel·lulosa, el petroli i els minerals es
caracteritzen per la seva uniformitat, són resistents a
la tracció i als productes químics, s'arruguen poc, són
sensibles a la calor i molt poc higroscòpics
Propietats d’algunes fibres
• Cotó: Elàstic, agradable al tacte (suau), transpirant,
resistent al calor, resistent a la fricció, resistent als
esquinçaments
• Lli: té la propietat de ser un bon regulador tèrmic
(aïllament l'hivern, transpirable l'estiu).
• Llana: presenta certa resistència als bacteris i els fongs,
però aquests microorganismes poden atacar les taques
que apareixen a la llana, presenta una font d'aliment per
a diferents tipus d'insectes, com les arnes.
• Seda:El fil de seda és molt resistent, llis i molt brillant. Es
descompon a 170 °C i quan és cru) té un tacte aspre i
cruixent. Els teixits són molt resistents, aïllants i amb una
bona presència, molt suaus i lluents.

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Classificació dels diferents tipus de fibres existents

  • 1. Classificació dels diferents tipus de fibres existents Natalia, Nayra, Regina i Marta
  • 2.
  • 3. Explicació: • Fibres naturals: es divideixen en vegetals ,animals i mineral: Vegetals: la cel·lulosa és el component bàsic i són característiques per ser suaus al tacte. Animals: s’obtenen del pèl de diferents animals i es composen principalment de proteïnes. Mineral: Només hi ha una l’amiant, que destaca per la seva incombustibilitat encara que l'amiant, actualment, no s'utilitza perquè les seves fibres són molt perjudicials per a la salut en cas d'inhalació.
  • 4. Explicació: • Fibres artificials: no es descomponen en cap tipus de fibra, i s'obtenen a partir de la transformació de productes naturals a partir de cel·lulosa i es caracteritzen per la seva uniformitat i la suavitat al tacte • Fibres sintètiques: tampoc es descomponen en altres tipus de fibres, s'obtenen de tres fonts principals: la cel·lulosa, el petroli i els minerals es caracteritzen per la seva uniformitat, són resistents a la tracció i als productes químics, s'arruguen poc, són sensibles a la calor i molt poc higroscòpics
  • 5. Propietats d’algunes fibres • Cotó: Elàstic, agradable al tacte (suau), transpirant, resistent al calor, resistent a la fricció, resistent als esquinçaments • Lli: té la propietat de ser un bon regulador tèrmic (aïllament l'hivern, transpirable l'estiu). • Llana: presenta certa resistència als bacteris i els fongs, però aquests microorganismes poden atacar les taques que apareixen a la llana, presenta una font d'aliment per a diferents tipus d'insectes, com les arnes. • Seda:El fil de seda és molt resistent, llis i molt brillant. Es descompon a 170 °C i quan és cru) té un tacte aspre i cruixent. Els teixits són molt resistents, aïllants i amb una bona presència, molt suaus i lluents.