TPU Ntama: Nneɛma Foforo a Wɔde Di Dwuma Ne Su Ahorow a Ɛwɔ Nneɛma a Wɔde Yɛ Adwuma a Ɛkɔ So -Adwumayɛ Ho
TPU (thermoplastic polyurethane) ntama yɛ ntama a ɛyɛ adwuma a wɔde thermoplastic polyurethane elastomer (TPU) elastomer ayɛ. Ne honam fam nneɛma a eye kyɛn so, nneɛma a atwa yɛn ho ahyia ho adamfofa su, ne sɛnea wɔde di dwuma ahorow pii no atwetwe adwene kɛse wɔ nnansa yi mfe mu wɔ ntadehyɛ, mfiridwuma, ne nnuruyɛ mu.
I. Nneɛma Mfitiaseɛ ne TPU Ntama a Wɔyɛ
TPU yɛ polymer ade a wɔyɛ denam polymerization a wɔde diisocyanate, polyol, ne nkɔnsɔnkɔnsɔn extender yɛ so. Ne molecule nkɔnsɔnkɔnsɔn nhyehyɛe no ka afã horow a ɛyɛ den (a ɛma ahoɔden) ne afã horow a ɛyɛ mmerɛw (ɛma ɛyɛ den) bom, na ɛyɛ "afã horow a ɛyɛ den na ɛyɛ mmerɛw block" nhyehyɛe soronko. Saa nhyehyɛe yi ma TPU ntama tumi da elasticity a ɛkorɔn adi, abrasion resistance, ne tear resistance wɔ dan mu hyew mu. Bio nso, wobetumi afa thermoplastic processing (te sɛ injection molding, extrusion, anaa calendering) so ayɛ no wɔ ɔhyew a ɛkɔ soro mu, ɛkura ne nsusuwii mu bere a ayɛ nwini akyi, na wotumi san de di dwuma bio.
Wɔtaa yɛ TPU ntama wɔ akwan abien so: Nea edi kan no, wɔde TPU ntama di dwuma tẽẽ sɛ nneɛma a wɔde yɛ nneɛma, a wɔde sini a wɔabɔ, sini a wɔatow, anaasɛ akwan a wɔfa so twitwiw nneɛma mu yɛ no sini anaa nhama, a afei wɔde ntama afoforo (sɛ nhwɛso no, wɔde laminating, coating, anaa knitting) bom nea ɛto so abien no, wɔde TPU fra na wɔsesa ne polymer nneɛma afoforo ma ɛyɛ yiye wɔ nneɛma pɔtee bi mu (sɛ nhwɛso no, hydrolysis a ɛko tia ne UV a ɛko tia).
II. Mfaso Titiriw a Ɛwɔ Adwumayɛ Mu: Dwumadi ne Nea Ɛtra Hɔ a Ɛkyɛ a Wɔka Bom
TPU ntama akansi titiriw no gyina wɔn adwumayɛ a ɛwɔ afã horow pii, a nea ɛka ho ne:
High Elasticity and Flexibility: TPU wɔ elastic modulus a ɛda rɔba ne plastic de ntam, na wobetumi atrɛw mu akɔ ne mfitiase tenten mmɔho pii a ɛsan nya ahoɔden ntɛmntɛm, na ɛma ɛfata ma dwumadie a ɛhwehwɛ sɛ ɛne onipa nipadua hyia anaasɛ dynamic load-soa (sɛ nhwɛso no, agumadi ntade ne compression braces).
Abrasion ne Tear Resistance a Ɛyɛ Paara: Polar akuw a ɛwɔ ne molecule nkɔnsɔnkɔnsɔn mu (sɛ nhwɛso no, urea ne urethane) ma molecule ahorow ntam tumi yɛ kɛse, na ɛma ahoɔden a ɛko tia ɔsɛe boro abɔde mu rɔba ne plastic a ɛnyɛ den so koraa. TPU kura ne mudi mu kura mpo wɔ apereperedi a ɛtaa ba anaasɛ ɛne nneɛma a ano yɛ nnam di nkitaho mu.
Nsuo ntumi nkɔ mu, ɛhome, na ɛtumi gyina wim tebea ano-Ɛtumi gyina ano: TPU sini no wɔ microporous nhyehyɛeɛ (pore size a wɔhwɛ so denam ɔkwan soronko bi so) a ɛsi nsuo nsuo a ɛtumi nkɔ mu (nsuo a ɛtumi nkɔ mu dodoɔ a ɛboro IPX7) berɛ a ɛma nsuo a ɛyɛ hyew molecules tumi fa mu (mframa a ɛtumi fa mu bɛyɛ 3,000-5,000 g/m2/ nnɔnhwerew 24). Wɔtaa de di dwuma sɛ "nsu a ɛmma nsu ntumi nkɔ mu, a ɛma ahome" ma abɔnten ntade. Bio nso, ɛma ɔhyew a ɛko tia nneɛma pii (ɛkura elasticity mu fi -40℃kosi 120℃) na ɛyɛ adwuma sen atetesɛm nneɛma te sɛ PVC kɛse wɔ UV onyin a ɛko tia no mu.
Nneɛma a Atwa Yɛn Ho Ahyia Ho Banbɔ ne Nea Wɔsan De Di Dwuma: TPU yɛ ade a wɔde yɛ nneɛma a ɛyɛ hyew a wobetumi asan ayɛ no foforo denam ɔhyew a wɔde bɛhyɛ mu bere a wɔatow agu awie no so, na ɛtew nneɛma a wɔsɛe no so. Bio nso, nnɛyi nneɛma a wɔyɛ no ama volatile organic compound (VOC) a wɔtow gu no so atew kɛse, na ɛne nneɛma a atwa yɛn ho ahyia ho mmara te sɛ EU REACH hyia.
III. Nsɛm a Wɔde Di Dwuma a Wɔtaa De Di Dwuma ne Nnwuma Botae
TPU ntama no dwumadi su ma ɛyɛ ade titiriw wɔ nnwuma ahorow pii mu:
Agumadi ne Abɔnten Mfiri: Wɔde di dwuma wɔ ntini a nsu ntumi nkɔ mu na ɛma ahome mu ma jacket, laminates a wɔde hyɛ yoga, ne uppers anaa linings a wɔde yɛ mpaboa a wɔde nantew, na ɛma ahobammɔ ne ahotɔ kari pɛ.
Aduruyɛ ne Ahotew Nneɛma: Wɔde di dwuma wɔ aduruyɛ mu ahobammɔ ntade (a esiw mmoawa ne nsu a ɛkɔ mu ano), tourniquets (ɛtrɛw kɛse na ɛnyɛ-nhyɛ), ne contact lens packaging films (a ɛhome na ɛko tia mmoawa).
Mfiridwuma ne Kar: Wɔde yɛ hose sheaths, seals, anaa cable insulation, na wɔde ne ngo ne nnuru a ɛko tia no di dwuma.
Consumer Electronics Accessories: Wɔde di dwuma wɔ mobile phone cases, smartwatch straps, ne application afoforo mu, TPU soft touch and drop resistance ma osuahu a ɔde di dwuma no yɛ kɛse.
IV. Nkɔso Nkɔso ne Nsɛnnennen
Ɛnam nkɔsoɔ a aba wɔ nneɛma ho nyansahu mu nti, TPU ntama nhwehwɛmu ne nkɔsoɔ de wɔn adwene asi dwumadie mu nsonsonoeɛ (te sɛ antimicrobial, conductive, ne luminous composite properties) ne nea ɛbɛtena hɔ daa (bio-based TPU a wɔreyɛ, de afifideɛ ngo asi petrochemical raw materials ananmu). Nanso, ne bo yɛ kɛse koraa sen ntama a wɔtaa de di dwuma (te sɛ polyester), na TPU bi a ɛba fam- betumi ahu amane wɔ yellowing anaasɛ hydrolysis a ɛko tia a ɛnnɔɔso ho, nsɛm a ɛhwehwɛ sɛ wɔyɛ no yiye na wɔhwɛ sɛnea wɔyɛ no so.
Sɛ yɛka ne nyinaa bom a, TPU ntama, esiane wɔn adwumayɛ a wotumi yɛ ne nneɛma a atwa yɛn ho ahyia adamfofa nti, abɛyɛ nnɛyi polymer nneɛma no baa dwumadibea titiriw, na adi dwuma a wontumi nsi ananmu wɔ ntama a ɛyɛ adwuma a wɔbɛma anya nkɔso ne nsakrae a ɛkɔ nneɛma a ɛyɛ ahabammono mu no mu.