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MessagePosté le: Sam 3 Sep - 08:59 (2016)    Sujet du message: Thermoset And Thermoplastic Polymers Pdf Download Répondre en citant




Thermoset And Thermoplastic Polymers Pdf Download > bit.ly/2bSnhQB










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Milton.Keynes:.The.Open.University.^.Fortman,.David.J.;.Jacob.P..The..curing..process..transforms..the..resin..into..a..plastic..or..rubber..by..cross-linking..individual..chains..of..the..polymer...The...cross-linking...is...facilitated...by...energy...and...catalysts...at...chemically...active...sites,...which...may...be...unsaturated...sites...or...epoxy...sites,...for...example,...linking...into...a...rigid,...three-dimensional...structure....T838.Design.and.Manufacture.with.Polymers:.Introduction.to.Polymers,.page.9..Depending.on.the.resin,.thermoplastics.can.serve.low-stress.applications.such.as.plastic.bags.or.high-stress.mechanical.parts..Thermosetting...plastics...are...generally...stronger...than...thermoplastic...materials...due...to...the...three-dimensional...network...of...bonds...(cross-linking),...and...are...also...better...suited...to...high-temperature...applications...up...to...the...decomposition...temperature....Thermoset.Thermoplastics.Thermoset.Curing.Process.Thermoset.plastics.contain.polymers.that.cross-link.together.during.the.curing.process.to.form.an.irreversible.chemical.bond..

THERMOPLASTIC.A.thermoplastic.material.softens.(becomes.pliable.and.plastic).when.heated,.but.it.does.not.cure.or.set..A..thermoplastic..elastomer..(TPE)..combines..the..rubber-like..properties..of..a..thermoset..elastomer..and..the..processing..characteristics..of..a..thermoplastic...Pros..Highly..recyclable..Aesthetically-superior..finishes..High-impact..resistance..Remolding/reshaping..capabilities..Chemical..resistant..Hard..crystalline..or..rubbery..surface..options..Eco-friendly..manufacturing..Cons..Generally..more..expensive..than..thermoset..Can..melt..if..heated.....Dante,..Diego..A...This.implies.that.thermosets.cannot.be.recycled.for.the.same.purpose,.except.as.filler.material.[2]..These...cross-links...(you...can...think...of...them...as...chemical...bridges)...give...the...cured...polymer...a...three-dimensional...structure,...as...well...as...a...higher...degree...of...rigidity...than...it...possessed...prior...to...curing....Curing..(also..referred..to..as..vulcanizing)..is..an..irreversible..chemical..reaction..in..which..permanent..connections..(known..as..cross-links)..are..made..between..the..materials..molecular..chains...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.Cons.Cannot.be.recycled.More.difficult.to.surface.finish.Cannot.be.remolded.or.reshaped.Thermoplastics.Curing.Process.Thermoplastics.pellets.soften.when.heated.and.become.more.fluid.as.additional.heat.is.applied..

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