Acrylic injection ịkpụzi usoro

Acrylic injection ịkpụzi usoro

Aha kemịkal nke acrylic bụ polymethylmethacrylate (PMMA na Bekee). N'ihi emezighị emezi nke PMMA dị ka ike siri ike nke elu ala, ntanye dị mfe, nkwụsị mmetụta dị ala, na arụ ọrụ ịkpụzi adịghị mma, mgbanwe nke PMMA apụtawo n'otu n'otu. Dị ka copolymerization nke methyl methacrylate na styrene na butadiene, ngwakọta nke PMMA na PC, wdg.

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The eruba omume nkePMMAdị njọ karịa nke PS na ABS, na mgbaze viscosity na-enwe mmetụta karịa mgbanwe okpomọkụ. N'oge a na-akpụzi ihe, a na-agbanwe viscosity gbazee na-adabere na okpomọkụ nke injection. PMMA bụ polymer amorphous nwere okpomọkụ na-agbaze karịa 160°C na okpomọkụ nke ire ere nke 270°C.

1. Mkpofu plastik

PMMA nwere ogo nnabata mmiri, yana ọnụego nnabata mmiri nke 0.3-0.4%. Ịkpụzi injection chọrọ iru mmiri n'okpuru 0.1%, na-abụkarị 0.04%. Ọnụnọ nke mmiri na-akpata afụ, ikuku streaks, na ibelata nghọta na gbazee. Ya mere, ọ dị mkpa ka akpọọ nkụ. Okpomọkụ ihicha bụ 80-90na oge ihicha bụ ihe karịrị awa 3. Enwere ike iji ihe emegharịrị 100% n'ọnọdụ ụfọdụ. Ọnụ ego ahụ n'ezie na-adabere n'ịdị mma chọrọ, na-emekarị karịa 30%. A ghaghị izere ihe ndị emegharịrị site na mmetọ, ma ọ bụghị ya, ọ ga-emetụta nghọta na njirimara nke ngwaahịa emechara.

2. Nhọrọ nke igwe ịkpụzi injection

PMMA enweghị ihe pụrụ iche chọrọ maka igwe ịkpụzi injection. N'ihi viscosity agbaze ya dị elu, ọ na-achọ oghere miri emi na oghere oghere oghere ka ukwuu. Ọ bụrụ na ike chọrọ nke ngwaahịa dị elu, a ga-eji skru nwere akụkụ buru ibu maka plasticization dị ala. Na mgbakwunye, a ga-echekwa PMMA n'ime ebe a na-ekpo ọkụ.

3. Akpụkpọ anụ na ọnụ ụzọ ámá

Ọnọdụ okpomọkụ nwere ike ịbụ 60-80. Dayameta nke ọwa isi kwesịrị dakọtara na taper dị n'ime. Akụkụ kacha mma bụ 5° ruo 7°. Ọ bụrụ na ịchọrọ ịgbanye ebu 4mm ma ọ bụ n'elu ngwaahịa, akụkụ ahụ kwesịrị ịbụ 7° na dayameta nke ọwa isi kwesịrị ịbụ 8 ruo 8°. 10mm, n'ozuzu ogologo nke ọnụ ụzọ ámá ekwesịghị gafere 50mm. Maka ngwaahịa ndị nwere mgbidi na-erughị 4mm, dayameta ọwa mmiri kwesịrị ịbụ 6-8mm

Maka ngwaahịa ndị nwere mgbidi dị elu karịa 4mm, dayameta nke onye na-agba ọsọ kwesịrị ịbụ 8-12mm. Omimi nke diagonal, ọnụ ụzọ nke nwere ụdị fan na kwụ ọtọ kwesịrị ịbụ 0.7 ruo 0.9t (t bụ ọkpụrụkpụ mgbidi nke ngwaahịa ahụ). Dayameta nke ọnụ ụzọ agịga kwesịrị ịbụ 0.8 ruo 2mm; A ga-ahọrọ obere nha maka obere viscosity.

Oghere ikuku ikuku na-adịkarị n'ime 0.05 miri emi, 6 mm n'obosara, na akụkụ akpụ akpụ dị n'etiti 30'-1° na akụkụ oghere dị n'etiti 35'-1°30°.

4. Agbazekwa okpomọkụ

Enwere ike tụọ ya site na usoro ịgbanye ikuku: sitere na 210ruo 270, dabere na ozi nke ndị na-ebubata ya nyere.

Wepụ n'oche azụ, mee ka igwe na-akpụzi injection hapụ isi ọwa bushes, wee jiri aka mee ihe ntụtụ rọba, nke bụ ịkpụzi injection ikuku.

5. Okpomọkụ injection

Enwere ike iji injection ngwa ngwa, ma iji zere nrụgide dị elu n'ime ime, ọ ka mma iji injection multi-stage, dị ka ngwa ngwa ngwa ngwa-ngwa ngwa, wdg. Mgbe ị na-agbanye akụkụ buru ibu, jiri nwayọọ nwayọọ na-agba ọsọ.

6. Oge obibi

Ọ bụrụ na okpomọkụ dị 260°C, oge obibi agaghị agafe nkeji iri. Ọ bụrụ na okpomọkụ dị 270°C, oge obibi agaghị agafe nkeji 8.

ZAOGE ihe nkiri Crusherdị mma maka ịkụpịa ihe dị nro dị nro na nke siri ike nke nwere oke nke 0.02 ~ 5MM, dị ka PP / PE / PVC / PS / GPPS / PMMA fim, mpempe akwụkwọ, na efere eji na ụlọ ọrụ, nkwakọ, na ụlọ ọrụ ndị ọzọ.

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Enwere ike iji ya nakọta, gwepịa ma bufee ihe mkpofu akụkụ nke ndị extruders, laminators, igwe mpempe akwụkwọ na igwe efere mepụtara. Dịka ọmụmaatụ, a na-ebufe ihe ndị a gwepịara ọnụ site na onye na-ebufe ya site na pipeline gaa na nkesa cyclone, wee kwaba ya n'ọdụ ụgbọ mmiri extruder screw feed site na nri ịghasa maka ịgwakọta akpaka na ihe ọhụrụ, si otú a na-enweta nchebe gburugburu ebe obibi ozugbo na itinye n'ọrụ.


Oge nzipu: Jul-01-2024