Lub hauv paus ntawm kev txhaj tshuaj yas molding txheej txheem rau kev tsim khoom yas

Cov ntaub ntawv yas tau sau npe qhov kev txhim kho tshwj xeeb tshaj li 50 xyoo dhau los, uas tshaj li ntawm lwm cov khoom siv.

Tam sim no nyob rau hauv Western Europe, ntau lawm ntim ntawm yas cov ntaub ntawv tshaj qhov tsim ntawm Steel.

Kev loj hlob ntawm kev siv yog feem ntau piav qhia los ntawm kev nce hauv cov neeg siv khoom lag luam, tau hloov pauv ntau yam yas, hlau thiab iav ua cov khoom ntim, ntim khoom, cov khoom siv, khoom siv hluav taws xob, thiab lwm yam.

Qhov zoo ntawm cov ntaub ntawv yas piv rau lwm cov ntaub ntawv yog cov hauv qab no:

• Lawv yog lub teeb thiab yog li txo nqi tsheb thauj mus los.
• Lawv yog cov ruaj thiab feem ntau muaj zog thiab muaj kev nyab xeeb dua.
• Lawv tuaj yeem tsim nyob rau hauv ntau yam ntawm cov duab thiab kev siv.
• Lawv muaj cov yam ntxwv zoo xws li thermal, acoustic thiab hluav taws xob rwb thaiv tsev.
• Koj tuaj yeem siv rau hauv daim ntawv thov zaub mov.

Plastics yog tus qauv raws li DIN 7728 thiab DIN 16780 tus qauv rau cov khoom sib tov.

Plastics yog cov khoom siv organic hu ua polymers, uas yog muab los ntawm Petroleum lossis Natural Gas, uas yog cov nqa ntawm Carbon C, hydrogen H, oxygen O thiab lwm yam molecules xws li nitrogen N, chlorine CL, sulfur S lossis CO2. Tam sim no, tsuas yog 4% ntawm cov roj hloov mus rau hauv cov ntaub ntawv yas.

yas yog muab rho tawm los ntawm roj av los ntawm thermal distillation txheej txheem (cracking), nyob rau hauv uas Ethylene, propylene, Butylene thiab lwm yam hydrocarbons yog cais.

Macromolecules, los yog yas, yog tsim los ntawm ntau cov qauv yooj yim, hu ua monomers; Thaum kev sib xyaw ua ke ntawm cov no pab los ntawm kev sib cuam tshuam tshuaj lom neeg ua rau muaj cov polymers.

Polymers yog dab tsi?

Polymers yog tsim los ntawm kev sib koom ua ke ntawm ntau pua txhiab tus me me molecules hu ua monometers uas tsim cov saw hlau sib txawv.

Plastics Classification:

• Plastics raug cais raws li cov txheej txheem sib txawv, raws li:
• Polymerization mechanism. (polymerization, polycondensation, polyaddition).
• Polymer qauv. (crystallinity, superstructures).

Cwj pwm / yam ntxwv ntawm cov polymer. (Cov khoom lag luam, cov khoom siv yas, cov khoom siv ua haujlwm siab).

Raws li cov saum toj no, plastics tau muab faib ua:

• Cov thermoplastics. (Polyolefins, Vinyl lossis Acrylic Polymers, Polyamides, Polyesters, thiab lwm yam)
• Thermostable.
• Elastomers.

Cov khoom siv ntawm cov khoom siv thermoplastic muaj feem xyuam rau Degree of Polymerization, uas yog qhov ntau uas ntsuas tus lej ntawm cov txuas uas ua rau cov saw hlau molecular. Qhov tseeb, qhov siab dua ntawm polymerization, qhov siab dua qhov viscosity, ntau dua tensile thiab kua muag tsis kam, qhov hardness ntau dua, ntau dua qhov cuam tshuam tsis kam thiab, qhov sib txawv, qhov tsis tshua muaj siab crystallize, tsawg dua qhov muaj peev xwm o thiab kev ntxhov siab tsawg dua. .

Nyob rau hauv cov ntaub ntawv ntawm Elastomeric thiab Thermoset cov ntaub ntawv, lawv cov khoom yog conditioned los ntawm lub Degree ntawm Crosslinking, uas ntsuas qhov feem pua ​​ntawm cov ntsiab lus crosslinking (kev sib raug zoo ntawm molecules) nyob rau hauv lub polymer system. Qhov siab dua ntawm kev sib txuas sib txuas, qhov ntau dua qhov kev tiv thaiv ntawm cov khoom, nws cov rigidity thiab nws cov thermal kuj.

Cov yas yog lub teeb, lawv tuaj yeem ua tau yooj yim molded, lawv muaj lub cev zoo heev thiab cov khoom siv kho tshuab, lawv tuaj yeem tsim cov xim sib txawv, lawv tuaj yeem sib xyaw nrog lwm cov yas lossis nrog cov ntaub ntawv inorganic, lawv muaj cov thermal thiab hluav taws xob tsawg heev, lawv yog cov resistant rau tshuaj lom neeg, yog permeable, reusable thiab / los yog recyclable.

Xav paub ntau ntxiv txog cov hauv paus ntsiab lus ntawm cov yas molding txheej txheem rau kev tsim khoom yas, koj tuaj yeem them mus ntsib Djmolding ntawm https://www.djmolding.com/description-of-the-plastic-injection-molding-method-and-manufacturing-process-step-by-step/ yog xav paub ntau info.