Vim li cas PP LGF40 Tiv Thaiv Anisotropic Warping
Standard luv iav fiber ntau polypropylene tebchaw (PP GF40) ua tsis taus nyob rau hauv hnyav -lub luag hauj lwm bumper los ua ke vim lawv luv fiber ntev (feem ntau<1mm) align along injection flow pathways. This high alignment causes severe differential mold shrinkage rates, resulting in structural warpage and dimensional deviations that prevent clean vehicle assembly.
LFT-G®PP LGF40 khaws cia txuas ntxiv 12 hli iav fiber ntau ntev hauv txhua pellet. Thaum lub sij hawm molding, cov fibers faib nyob rau hauv ib tug random 3D interlocking network. Cov pob txha sab hauv no ua kom lub cev tsis sib xws hauv txhua qhov kev qhia (isotropic txias), xa qhov tshwj xeeb ntawm qhov raug thiab tiv thaiv ib feem deformation nyob rau hauv lub voj voog hnyav.
Cov ntaub ntawv pov thawj: PP LGF40 vs. Traditional Compounds
Cov ntaub ntawv xov xwm hauv qab no piv rau LFT-G®PP-LGF40-BG04 tiv thaiv tus qauv luv luv- fiber ntau polyamide (PA6-GF40) nyob rau hauv qhuav thiab ntub dej (cua txias) xeev, qhia txog kev ruaj ntseg ntawm cov fiber ntau polypropylene ntev.
| Mechanical Properties (Tswj) | Test Standard | PP LGF40 (Nyob / ntub) | PA6 GF40 (Dry State) | PA6 GF40 (ntub / txias) |
|---|---|---|---|---|
| Qhov ceev (g / cm³) | TS EN ISO 1183 | 1.21 (tsis tu ncua) | 1.36 | 1.36 |
| Kev nqus dej (%) | ISO 62 | < 0.01% | 1.8% | 6.5% - 8.5% (Max Saturation) |
| Tensile zog (MPa) | TS EN ISO 527 | 135 | 190 | 129 (42% Poob) |
| Tensile Modulus (MPa) | TS EN ISO 527 | 9,200 (tsis tu ncua) | 1,1500 | 6,700 (41% Poob) |
| Izod Impact (kJ / m²) | ISO 180 | 35.0 | 11.0 | 13.0 |
| Pwm Shrinkage Range (%) | TS EN ISO 294-4 | 0.10% - 0.25% (Isotropic) | 0.35% - 0.85% | 0.45% - 1.20% (Anisotropic Warp) |
Field Proven Case Study: Carbon Steel Bumper Beam Hloov ntawm Utility Truck
Kev Sib Tw
Lub tuam txhab lag luam thoob ntiaj teb kev lag luam tsheb thauj khoom siv hnyav, welded carbon steel bumper reinforcement beams. Lub 18 kg steel sib dhos tau yooj yim rau qis - zaus qaug zog tawg thiab xeb hauv cov ntug hiav txwv hnyav thiab ib puag ncig. Cov chaw tsim khoom tau soj ntsuam cov cam khwb cia txhuas, tab sis nws dhau qhov kev txwv cov nqi tsim khoom thiab yuav tsum tau siv dav, kim tshaj tom qab- molding machining.
Kev daws
Pab neeg tsim qauv tau hloov cov nqaj hlau nrog kev txhaj tshuaj- cov qauv tsim qauv sivLFT-G®PP -LGF40-BG04(40% ntev iav fiber reinforced polypropylene). Lub nruam fiber ntau matrix muab hlau-zoo li dabtsi yog khoov nruj, thaum sib sau ua ke 5 cais steel brackets rau hauv 1 integrated molded ib feem.
Cov txiaj ntsig
- 42% Qhov hnyav:Cov khoom hnyav poob los ntawm 18 kg mus rau 10.4 kg, ncaj qha nce payload muaj peev xwm.
- Parts Consolidation:Consolidated 5 cais steel brackets thiab reinforcement daim hlau rau hauv 1 ib qho molded ib feem.
- Zero Warping & Distortion:Qhov zoo ntawm qhov kev ruaj ntseg tiv thaiv sagging thiab warp nyob rau hauv cyclic tsheb vibration.
- 100% Rustproof Kev Ua Haujlwm:Polypropylene cov tshuaj tiv thaiv ib puag ncig tshem tawm qhov xav tau rau sab nraud rustproof txheej.
Tsim Kev ywj pheej thiab cov khoom sib xyaw ua ke
Welded carbon steel qauv txwv cov tsheb tsim qauv kom yooj yim geometry, yuav tsum muaj ntau qhov kev txhawb nqa los tuav cov kev ntxhov siab hauv zos. Txhua kab weld qhia txog cov ntsiab lus tsis ua haujlwm thiab kev ua haujlwm - cov kauj ruam sib dhos hnyav.
Siv LFT-G®PP LGF40 tso cai rau cov engineers los pwm txoj hauv kev, ribbed geometries ncaj qha. Cov ribs ntxiv, mounting tabs, thiab fastener qhov tau muab tso rau hauv ib qho kev txhaj tshuaj - cov kauj ruam molding, tshem tawm cov stamping thib ob, vuam, thiab xov.
Cov Txheej Txheem Ua Haujlwm rau 40% Ntev iav Fiber Polypropylene
Vim tias PP LGF40 muaj kev thauj khoom siab ntawm cov iav fiber ntau txuas ntxiv, cov kev txhaj tshuaj tsis raug tuaj yeem txiav cov fibers, tig cov khoom rau hauv cov qauv luv luv - fiber ntau. Pab neeg tsim khoom yuav tsum kho cov teeb tsa tshuab raws li peb cov lus qhia no:
Melt kub
Teem lub thoob cua sov thaj tsam ntawm 210℃thiab 240 degree. Qhov kub siab txo qis matrix viscosity, tiv thaiv cov fibers ntev los ntawm cov neeg kho tshuab shear breakage.
Nozzle & Rooj vag
Tsis txhob txwv cov rooj vag. Cov rooj vag yuav tsum muaj qhov tsawg kawg nkaus txoj kab uas hla ntawm 4.0mm, thiab tag nrho cov kev sib tw khiav tau raug pom zoo los tiv thaiv kev tawg ntxov ntxov.
Ntsia Hlau Configuration
Siv qhov qis- compression ratio ntsia hlau (1.2: 1 rau 1.5: 1) nrog rau qhov chaw pub khoom sib sib zog nqus. High- compression barrier screws degrade nruam fiber ntau skeletons tam sim ntawd.
