PP txhaj tshuaj molding: Yam koj yuav tsum nco ntsoov

1. Kev nkag siabPolyprropyleneCov Khoom Siv

1.1. Cov Khoom Siv Khoom

Polypropylene semi-crystalline qauv muab nws cov khoom zoo uas cuam tshuam ncaj qha cuam tshuam ntawm kev txhaj tshuaj moulding txheej txheem. Nrog rau lub ntsiab lus me me me me qis ({{{1} qib ({}}}. 5%}}. 5%}}. 5%}}. Cov khoom siv crystallization tseem cuam tshuam ib feem ntev, warpage, thiab tag nrho zoo hauv pp txhaj tshuaj molding cov ntawv thov.

1.2. Cov qib thiab ntxiv

Cov qib PP sib txawv (homopolymer, cov kev cuam tshuam copolymer, cuam tshuam copolymer) nthuav qhia kev coj tus cwj pwm thaum PP txhaj tshuaj molding. Kev cuam tshuam rau cov neeg copolymers muaj cov kev ua kom zoo dua tab sis yuav xav tau kev ua haujlwm kub siab dua, thaum random repolymers muab txoj kev pom zoo dua thiab txo kev tawm tsam. Nkag siab tau li cas ntxiv li Nucleating cov neeg sawv cev, cov tshuaj tiv thaiv kab mob, thiab UV Stabilizers cuam tshuam rau kev ua tiav yog qhov tseem ceeb rau kev ua tiav pp txhaj tshuaj molding ua haujlwm.

2. Khoom npaj tej yam tseem ceeb

2.1. Kom Qhuav

Tsis zoo li ntau cov engineering thermoplastics, tus qauv PP feem ntau tsis xav tau ua ntej kom qhuav vim nws tsis yog hygroscopic xwm. Txawm li cas los xij, qhov kev ntsuas no yuav ua rau muaj teeb meem zoo hauv PP txhaj tshuaj molding thaum cov khoom tau raug cov av noo lossis muaj hygroscopic additives. Lub voj voog ziab luv luv (2-4}}}}}} degree)} degree when when processing when when when has contains has when when has contains has when has ‡ us

2.2. Kev tuav thiab kev tiv thaiv tsis huv

Kev paug paug sawv cev rau cov kev pheej hmoo pheej hmoo hauv PP txhaj tshuaj molding. Txawm tias cov ntaub ntawv txawv teb chaws me me tuaj yeem tsim cov ntsiab lus tsis muaj zog, qhov pom tsis meej, lossis ua cov teeb meem. Kev siv cov ntaub ntawv tsim nyog tuav cov kev cai, cov txheej txheem kev tswj hwm tau zoo pab ua kom muaj kev ncaj ncees thoob plaws lub PP txhaj tshuaj moulding txheej txheem.

3. Txhim kho cov qauv tsis muaj

3.1. Tswj Qhov Kub

Qhov tsim nyog melt kub kev tswj yog qhov tseem ceeb rau kev ua tiav pp txhaj tshuaj molding. Qhov kev pom zoo rau chim siab profile feem ntau yog li ntawm 200-230 degree rau ntau cov qhab nia hauv PP qib rau lub nozzle. Kev kub heev tuaj yeem ua rau cov khoom siv tsis ua haujlwm, thaum tsis muaj cua sov ua tsis tiav, ntws tawm, thiab tsis zoo. Ua tib zoo saib ntawm melt kub thoob plaws ntau lawm sau ua kom zoo ib yam zoo nyob hauv PP txhaj tshuaj molding ua haujlwm.

3.2. Siab Thiab Ceev Chaw

Txhaj tshuaj nyem, tuav lub siab, thiab kev txhaj tshuaj ceev tseem cuam tshuam ntau cov khoom zoo hauv pp txhaj tshuaj molding. Kev txhaj tshuaj ntau dua feem ntau tau txais cov ntawv thov thin-walled tab sis tuaj yeem ua rau cov roj teeb lossis nplaim taws teeb tsis zoo. Tuav lub siab, feem ntau 50-70}}}}% ntawm kev txhaj tshuaj siab rau PP, yuav tsum tau ua kom zoo rau tswj cov kev ntxhov siab ntau yam dhau los. Pom txoj cai sib npaug ntawm cov tsis sib npaug no sawv cev rau qhov kev sib tw tseem ceeb hauv PP txhaj tshuaj moulding txheej txheem opuling.

3.3. Kev txiav txim siab txias

PP's Crystallization cwj pwm ua rau txias tshwj xeeb rau kev txhaj tshuaj molding cov txheej txheem. Puab ntsuas kub, feem ntau yog tswj nruab nrab ntawm 20-60 degree rau pp txhaj tshuaj molding kev siv, cuam tshuam rau Crystallization, ib qho shrinkage, thiab lub sijhawm sib yuav. Siab dua pwm qhov kub me txhawb nqa zoo crystallization thiab txo kev ntxhov siab sab hauv, tab sis txuas ntxiv lub sijhawm. Uniform cua txias hla lub pwm tej kab npoo kab noj kab noj kab noj hniav tiv thaiv cov shrinkage thiab cuam tshuam tawm tsam pp txhaj tshuaj moulding ntau lawm.

4. Cov kev sib tw thiab cov kev daws teeb meem

4.1. Tswj shrinkage thiab warpage

PP Lub Tsev Phem Loj Loj Pib cov nqi sib tw tseem ceeb hauv kev ruaj khov ruaj khov. Lub rooj vag ua haujlwm zoo, khiav tsim, thiab kev ua kom txias kaw lus, thiab kev hloov kho lub tshuab txias pab tswj cov teeb meem no hauv pp txhaj tshuaj moulding. Teeb tsa tav thiab tswj cov phab ntsa hluav taws xob tuab thoob plaws hauv qhov qauv tsim minimizes varinkage. Thaum kev ntaus rog hnyav tshwm sim hauv PP txhaj tshuaj moulding, kho tau kev tuav lub siab, lub sijhawm txias, thiab ua kom kub ntau zaus muab kev daws teeb meem.

4.2. Nto Cov Lus Cog Tseg

Cov Khoom Siv Tog, Rooj Zaum Blade, thiab Tsov Sawb sawv cev rau cov teeb meem zoo hauv pp txhaj tshuaj molding. Lub Cim Dab Neeg feem ntau tshwm sim los ntawm lub sijhawm txias txias lossis tuav lub siab, thaum tsov txaij muaj zog feem ntau los ntawm ntau hom kev ua haujlwm lossis tsis zoo homogeneity. Hais cov kev tsis haum no yuav tsum tau hloov kho cov tsis tau thiab qee zaum cov cuab yeej hloov kho kom ua tiav cov chaw zoo sib xws, cov khoom lag luam zoo hauv PP txhaj tshuaj moulding ntau lawm.

Txog Peb

Luoyang Dema Ntshuam & Export Co., Ltd. Cov Khoom Siv Tau Zoo rau Ntiaj Teb Cov Chaw Tsim Tshuaj, Cov Khoom Siv Khoom Siv Yas Siv, thiab Cov Khoom Siv Khoom Siv Yas. Nws muab qhov zoo tshaj plaws pp, pev, ave, thiab cov tswv lag luam tsim khoom, cov tswv lag luam, cov tswv cuab Hoobkas, thiab lwm yam.

 

Yog tias koj tab tom nrhiav rau GeneralYas Khoom, thov koj xav tau tus nqi hloov tshiab thiab hais los ntawm Luoyg Bema Ntshuam & Export Co., Ltd. Cov pawg muag khoom yuav teb tau li ntawm 48 teev.