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Mmetụta nke ndị na-eme ihe na-eme ka ihe na-eme ka ihe na-eme polymer na ụdị mmeghe ya

Enlarged font  Narrow font Release date:2021-04-04  Source:Engineering plastic ngwa  Browse number:312
Note: Ngwunye a na-ekpo ọkụ dị mma maka plastik kristal ezughị ezu dị ka polyethylene na polypropylene.

Nucleating gị n'ụlọnga

Ngwunye a na-ekpo ọkụ dị mma maka plastik kristal ezughị ezu dị ka polyethylene na polypropylene. Site na-agbanwe crystallization omume nke resin, ọ nwere ike mee ngwangwa nke crystallization ọnụego, dịkwuo crystal njupụta na-akwalite miniaturization nke crystal ọka size, ka ibelata ịkpụzi okirikiri na melite nghọta na elu New ọtọ nwekwara maka anụ ahụ na n'ibu Njirimara dị ka gloss, ike ọdụdọ, rigidity, okpomọkụ distortion okpomọkụ, mmetụta na-eguzogide, na creep eguzogide.

Dinggbakwunye onye na-eme ihe na-eme ka ọ dịkwuo elu nwere ike ime ka ọsọ ọsọ na ogo nke crystallization nke ngwaahịa polymer crystalline, ọ bụghị naanị nwere ike ịbawanye nhazi na ịkpụzi ọsọ, kamakwa ọ na-ebelata ihe dị iche iche nke crystallization nke abụọ nke ihe ahụ, si otú ahụ na-eme ka akụkụ nke ngwaahịa ahụ kwụsie ike. .

Mmetụta nke ndị na-eme ihe na-emepụta ihe na ngwaahịa

Mgbakwunye nke ihe na-emepụta ihe na-eme ka ngwongwo nke ihe polymer dịkwuo mma, nke na-emetụta ọdịdị anụ ahụ na nhazi nke ihe polymer.

01 Mmetụta na ike ike na ịda ike

Maka ndị na-acha kristal ma ọ bụ ndị nwere obere kristaline, mgbakwunye nke ihe na-emepụta ihe na-enye aka ịbawanye crystallinity nke polymer, ma na-enwekarị mmetụta na-ewusi ike, nke na-eme ka ihe siri ike nke polymer, ike mgbatị na ike na-ehulata, na modulus , ma The elongation na ezumike n'ozuzu na-ebelata.

Iguzogide ike ike

N'ikwu okwu n'ozuzu, ka ike nke ihe ahụ dị elu ma ọ bụ na-ehulata ike, ike mmetụta na-efu. Otú ọ dị, mgbakwunye nke ihe na-emepụta ihe na-emepụta ihe ga-ebelata ogo spherulite nke polymer, nke mere na polymer na-egosipụta nguzogide mmetụta dị mma. Dịka ọmụmaatụ, ịgbakwunye ihe na-eme ka ihe na-eme ka ihe dị mma na PP ma ọ bụ PA nwere ike ime ka ikike nke ihe ahụ dịkwuo elu site na 10-30%.

03 Mmetụta na arụmọrụ anya

Omenala uzo polymers dị ka PC ma ọ bụ PMMA bụ n'ozuzu amorphous polymers, mgbe crystalline ma ọ bụ ọkara crystalline polymers bụ n'ozuzu opaque. Mgbakwunye nke ndị na-ekpo ọkụ nwere ike belata nha nke ọka polymer ma nwee njirimara nke usoro microcrystalline. Ọ nwere ike ịme ka ngwaahịa ahụ gosipụta njirimara nke translucent ma ọ bụ transperent kpamkpam, ma n'otu oge ahụ nwere ike melite ngwụcha ngwaahịa ahụ.

04 Mmetụta na nhazi ọrụ nhazi polymer

N'ime usoro ịkpụzi polymer, n'ihi na ihe na-eme ka polymer gbazee nwere ọnụego ngwa ngwa ngwa ngwa, na sistemụ polymerụ ahụ emebeghị ka ọ kpochaa ya kpamkpam, ọ na-akpata nsị na nrụrụ n'oge usoro jụrụ oyi, na polymer ezughi ezu nwere oke nkwụsi ike. Ọ dịkwa mfe ibelata nha n'oge usoro. Gbakwunye onye na-eme ihe na-eme ka ọ rụọ ọrụ nwere ike ime ka ọnụ ọgụgụ mkpuchi ahụ dị mkpụmkpụ, belata oge ịkpụzi, meziwanye arụmọrụ na-ebelata ogo post-contraction nke ngwaahịa a.

Ofdị ụdị ihe na-eme ka a na-eme ihe

01 α crystal nucleating gị n'ụlọnga

 Ọ tumadi mma na nghọta, n'elu gloss, rigidity, okpomọkụ distortion okpomọkụ, wdg nke ngwaahịa. Ọ na-akpọ a uzo gị n'ụlọnga, a transmittance enhancer, na a rigidizer. Karịsịa gụnyere dibenzyl sorbitol (dbs) na ihe eji eme ya, aromatic phosphate ester salts, ndị a gbanwere benzoates, wdg, ọkachasị dbs na-eme ka ndị na-eme ihe n'eziokwu bụ ngwa kachasị. Enwere ike kewaa Alpha crystal nucleating mmadụ n'ime inorganic, organic na macromolecules dịka usoro ha si dị.

02 Inorganic

Inorganic nucleating mmadụ tumadi gụnyere talc, calcium oxide, carbon black, calcium carbonate, mica, inorganic pigments, kaolin na catalyst residues. Ndị a bụ ndị mbụ na-arụ ọrụ nke na-arụ ọrụ dị ala na nke bara uru mepụtara, ndị ọrụ nyocha na nke kachasị nyocha bụ talc, mica, wdg

03 Organic

Carboxylic acid metal salts: dị ka sodium succinate, sodium glutarate, sodium caproate, sodium 4-methylvalerate, adipic acid, aluminum adipate, aluminum tert-butyl benzoate (Al-PTB-BA), Aluminom benzoate, potassium benzoate, lithium benzoate, sodium cinnamate, sodium β-naphthoate, wdg N’etiti ha, alkali metal ma ọ bụ aluminom nnu nke benzoic acid, na nnu aluminom nke tert-butyl benzoate nwere mmetụta ka mma ma nwee ogologo oge eji, mana nghọta adịghị mma.

Ngwurugwu phosphoric acid salts: Organic phosphates tumadi gụnyere salts metal salts na isi metal phosphates na ogige ha. Dị ka 2,2'-methylene bis (4,6-tert-butylphenol) phosphine nnu nnu (NA-21). Nke a na ụdị nucleating gị n'ụlọnga e ji ezi nghọta, rigidity, crystallization ọsọ, wdg, ma ogbenye dispersibility.

Nsonaazụ Sorbitol benzylidene: O nwere mmetụ dị mma dị mma na nghọta, ncha ihu elu, nkwụsi ike na akụrụngwa thermodynamic ndị ọzọ nke ngwaahịa ahụ, ma nwee ezigbo ndakọrịta na PP. Ọ bụ ụdị nghọta nke na-eme nyocha miri emi ugbu a. Nucleating gị n'ụlọnga. Na ezi arụmọrụ na ala price, ọ na-aghọ ndị kasị arụsi ọrụ ike mepụtara nucleating gị n'ụlọnga na ndị kasị ibu dịgasị iche iche na ndị kasị ibu mmepụta na ahịa n'ụlọ na mba ọzọ. Enwere tumadi dibenzylidene sorbitol (DBS), abụọ (p-methylbenzylidene) sorbitol (P-M-DBS), abụọ (p-chloro-gbanwere benzal) sorbitol (P-Cl-DBS) na ihe ndị ọzọ.

High agbaze ihe polymer nucleating gị n'ụlọnga: Ugbu a, e nwere tumadi polyvinyl cyclohexane, polyethylene pentane, ethylene / acrylate copolymer, wdg O nwere ogbenye agakọ Njirimara na polyolefin resins na ezi dispersibility.

stal kristal na-akpụ akpụ:

Ebumnuche bụ inweta ngwaahịa polypropylene nwere ọdịnaya dị oke crystal dị elu. Ihe bara uru bu imeziwanye nguzogide mmetụta nke ngwaahịa a, mana adighi belata ma obu buwanye ogba oku nke ihe omuma nke ihe a, nke mere na enwere uzo abuo abuo na-emegiderịta onwe ha na nguzogide nrụrụ ọkụ.

Otu ụdị bụ ogige mgbanaka ole na ole ejikọtara ọnụ na nhazi-dị iche iche.

Nke ọzọ bụ nke oxides, hydroxides na salts nke ụfọdụ dicarboxylic acid na ọla nke otu IIA nke tebụl oge. Ọ nwere ike gbanwee oke nke ụdị kristal dị iche iche na polymer iji gbanwee PP.



 
 
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