Hauv cov av ruaj ntseg niaj hnub no siab tsis tau muaj lub zog rau cov khoom siv tiv thaiv tus kheej (PPE) thiab cov cuab yeej ua tub rog. Ntawm ntau yam bollistic daws, UHMWPE UD ntaub yog sai sai uas yog kev xaiv kev lag luam zoo. Cov khoom siv fiber ntau tsis tsuas yog muab cov khoom siv hluav taws xob tiv thaiv kev yooj yim nrog lub teeb ci, ua kom zoo dua hnav kev ua haujlwm zoo thiab ua haujlwm. Dab tsi teeb tsa UHMWPE UD cov ntaub qhwv cov ntaub ntawv ballistic? Yuav ua li cas nws ua tau zoo li cas thawb cov kev txwv ntawm kev ua tau zoo hauv cov ntawv thov tiag tiag thiab cov qauv kev xeem?
Molecular qauv thiab cov khoom siv mechanies ntawm UHMWPE
Molecular architecture thiab polymerization traits
UHMWPE (ultra-siab molecular hnyav polyethylene) is a semi-crystalline thermoplastic polymer composed of linear polyethylene chains with an exceptionally high molecular weight (typically >3 lab G \/ Mol) -Txoj kev siv-{2}}}} sijhawm ntev dua tus qauv HDPE. Cov yam ntxwv tseem ceeb suav nrog:
Crystallinity (85-90%): Tsis tu ncua Stacked Crystalline Cov Thawj Coj Pab Txhawb Nqa Cov Hluav Taws Xob Ua Kom Muaj Kev Lag Luam Molecular.
Ntau lub saw packing: muaj zog interbolecular hydrogen dendling bhless Superior axial tensile cov khoom.
Tsawg tsawg tuav ceg: ua rau ze ze-zoo meej cov txheej txheem thaum lub sijhawm kos duab, ua tiav ib lub xeev quasi-rigid xeev.
Tus qauv no xaus rau UHMWPE fibers nrog lub zog tshwj xeeb (lub zog-ceev sib piv)) surpassing hlau, ceramics, thiab lwm yam hluavtaws fibers:
|
Khoom |
Lub zog tensile (GPA) |
Ntom ntom (g \/ cm³) |
Lub zog tshwj xeeb (GPACHNNY \/ G) |
|
UHMWPE Fiber |
2.8–3.6 |
0.97 |
2.88–3.71 |
|
Lub nkoj |
2.5–3.6 |
1.44 |
1.74–2.5 |
|
Hlau |
0.5–2.0 |
7.8 |
0.06–0.26 |
|
Rooj ceramics |
0.3–0.6 |
3.2 |
0.09–0.19 |
Lub zog nqus muaj peev xwm
Nyob rau hauv high-velocity cuam tshuam, uhmwpe fibers dissipate lub zog sib tsoo los ntawm saw elongation, thiab ib cheeb tsam deformation. Kev tshawb fawb qhia nws lub zog nqus mus txog 80-100 J \/ g {}. 4}}. 4} Tsawg dua li txo qhov hnyav hnyav.
Thermodynamic tus cwj pwm thiab kev txwv
UHMWPE cov kev sib tw muaj xws li lub ntsiab lus melting (~ 135 degree) thiab ua rau muaj kev tsis txaus ntseeg saum 100 degree. Kev daws teeb meem Ceramic Facplates lossis nplaim taws-retardant txheej los txhim kho wermal stability.
Cov txheej txheem zoo tshaj plaws: Ud Npuag lub shockwave dissipation mechanisms
Unidirectional (UD) FiberHom Kev Ua Haujlwm Outperforms tsoos tsho ib txwm pov tseg los ntawm kev ua kom zoo tshaj tawm thiab lub zog txoj kev. UD Npuag Txheej (0 degree \/ 90 degree \/ 90 degree) tau sib raug zoo ntawm resin matrices kom txo cov kev ntxhov siab.
Kev Tshaj Tawm Txog Kev Nyuaj Siab Dynamics
Raws li cov mos txwv:
{{0 {0}} hauv-dav hlau tsis sib kis ntawm fiber ntau acoustic (~ 3,200 m \/ s), sai sai dispersing kev ntxhov siab.
{{0 {0}}} interlayer vuag kom qeeb raws li resin matrices dampen zog, tsim cov pob hluav taws xob ua kom muaj zog-nqus cov phiaj xwm.
Synergistic Zog Unsipation
{{0 {0}} Fiberion Rupture: Tshaj tawm lub zog tensile ntawm Rhuav cov ntsiab lus.
--} fiber ntau fiber ntau rub-tawm: kev sib txhuam ntawm cov fibers thiab cob cov khaub ncaws txhim kho kev nruj.
-- Daim Ntawv Teev Tseg Tsis Txaus: Micro-Pluag tsis muaj kev cuam tshuam Kinetic Zog.
Ntau tus ntaus resilience
UD Npuag cov khaubncaws sab nraud povtseg kev puas tsuaj tiv thaiv kev puas tsuaj, ua rau muaj kev tiv thaiv hauv zej zog. Stacking tsim tso cai rau gruped "cheeb tsam-teb" armor.
Cov txheej txheem tsim khoom ntawm UHMWPE UD Npuag
Ntau lawm koom nrog precision tswj ntawm molecular kev taw qhia, fiber ntau kawg, thiab interfacial bonding:
1. GEL Sinning: Daim duab ua ke thiab ua kom zoo dua crystallinity.
2. Kev kos duab kub: ncab fibers 30-50 × kom txhawb lub zog.
3. Txheej Lamination: Ncua {0} degree \/ 90 Degree Leafing rau Uniform kev ntxhov siab kev faib tawm.
4. Resin Impregration: Thermoplastics (piv txwv li, EVA, PU) txhim kho internllaminar shear.
5. Cov nias kub: Sib tw thiab yoog raws cov ntawv thov mos \/ tawv (NJER WEARY-IV).
Cov Txheej Txheem Tseem Ceeb:
|
Chaw ua uas tsis tau haus |
Qho deb |
Lub hom phiaj |
|
Kos piv |
40–50× |
Ntau tshaj lub zog \/ modulus |
|
Moulding temp. |
160-200 Qib |
Tiv Thaiv Kev Txwv |
|
Resin Cov Ntsiab Lus |
8–15% |
Kev Ua Haujlwm Zoo \/ Yooj Yim |
|
Yauv cov ntsiab lus |
<1.0% |
Zam txhob vapor-ua kom tawg |
Kev Ua Tau Zoo: NIJ Kuaj & Simulation
NIJ 0101.06 Cov Qauv Kev Ntsuas
{{0 {0}} v50 ballistic Txwv: 50% Penetration qhov muaj peev xwm ceev.
{{0 {0}}} Ntau-ntaus Kuj: simulates rov ua dua.
{{0 {0}}} Backface deformation: av nplaum rov qab cov kev ntsuas ncua kev ncua kev nyuaj.
--} Ib puag ncig} Kev ntsuam xyuas ib puag ncig: Thermal \/ av noo cycling.
{{0 {}}}} Kev Txhim Kho Kev Lag Luam (LS-DYNA \/ Ansys)
FEA cov qauv kwv yees:
-- Kev ntxhov siab yoj kev tshaj tawm.
-- del del edamination \/ Fiber Ua tsis tiav Harffolds.
-- txheej-tshwj xeeb lub zog nqus tau.
Cov txiaj ntsig:UHMWPE UD ua tiav kev tiv thaiv sib piv ntawm 30% lub zog sib zog vs. aramid.
Cov Ntawv Thov: Los ntawm PPE rau Composite Armor Systems
|
Hom |
Qhov Zoo |
Piv txwv |
|
Mos Armor |
Lub teeb yuag, hloov tau yooj yim, nkees nkees |
Vests tactions, iav iav |
|
Lub kaus mom hlau |
Cov Khaub Ncaws Tsis Cuam Tshuam Tshaj Tawm Cov Ntaus Pob Ncaws Pob Qis |
Ntsej muag shields |
|
Lub tsheb |
Qhov hnyav txuag nyiaj rau kev muaj sia |
Ual armor |
|
Ib tug tub rog |
EMI Tiv Thaiv + Ballistic Kev Tiv Thaiv |
Sarellite Shielding |
Tag
UHMWPE UD ntaub npuagUnmatched lub zog-rau-hnyav piv, cuam tshuam kuj, thiab versatility ua rau nws tus qauv kub-los ntawm zais lub cev ua rog rau vasicular.
Xaiv Zhejiang Qianexilong (qxL) UHMWPE UD Npuag
Ua tus thawj coj hauv cov ntaub ntawv ua haujlwm siab,Qianexilong (qxl)Muab txiav-ntug txiav Peb nruj ntsuas cov ntaub ua kom zoo ua rau lub cev nyhav ,, nres lub zog, thiab kav ntev.
Tiv tauj peb rau cov qauv thiab customized daws!