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Kwa nini gari la PPF lina rangi ya njano (1)?

TAREHE: 2022-12-15


Car PPF yellow, refers to the transparent PPF film exposed to natural light, ultraviolet, heat, oxygen, chemical erosion, water and so on the environment, as well as improper production process caused by the car color yellow phenomenon.

 

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In theory, all items under the influence of time and external factors, will occur a certain degree of yellowing, this is the law of nature. Car owners can make specific analysis and judgment according to the following factors that may lead to yellowing of transparent PPF-- the three main factors that determine whether the PPF film will yellow: substrate, glue, coating. Among them, the substrate is the most likely to cause yellowing.

 

Upeo wa uwezekano wa njano ya wazi ya PPF: substrate

 

PVC ni nyenzo pekee ambayo itageuka njano kwa muda mfupi sana. Unaweza kufikiria kama plastiki ngumu. Ina uthabiti duni kwa mwanga na joto, na ni rahisi kuwa njano.

Hata hivyo, filamu ya kinga ya lacquer imeendelea hadi sasa, na nyenzo zimeboreshwa kwa vizazi kadhaa. Sasa filamu ya kinga ya gari iliyopewa jina la PVC imetoweka. Kwa hiyo, nyenzo za msingi za gari na nguo ambazo zina uwezekano mkubwa wa kusababisha yeloration kimsingi ni nyenzo za TPH.

 

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TPH nyenzo ni kweli kuongeza plasticizer kwa nyenzo PVC, hivyo kwamba awali ya plastiki ngumu katika ujenzi kiasi nzuri ya plastiki laini, lakini asili yake bado ni PVC, hivyo TPH nyenzo ni rahisi sana njano.

 

Kwa kuongeza, nyenzo za msingi za TPU zenye kunukia, nyenzo za msingi za TPU zenye kunukia zina pete ya benzini, rahisi kuathiriwa na oxidation ya ultraviolet, njano isiyoweza kurekebishwa, kwa hiyo haifai kabisa kwa nyenzo za msingi za TPU za magari.

 

Kwa hivyo, TPU ya aliphatic lazima ichaguliwe kama substrate sahihi ya PPF, kwa sababu muundo wake hauna pete ya benzini, na msongamano wa mpangilio wa molekuli ni mara kadhaa ya kunukia, ambayo si rahisi kuathiriwa na oxidation ya ultraviolet na sugu sana. njano. TPU ya Aliphatic kwa ujumla hutumiwa katika viatu vya juu, vifaa vya LED, lenses za macho, nguo zisizoonekana na maeneo mengine ambayo yana mahitaji ya upinzani wa njano.