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WORK IN PROGRESS but slightly worse fogging than F1. Researchers weren’t sure if this was a test error or an unintended interaction with other compound components. The best results were seen in F4 (newer stripping agent) and F5 (adsorbent), with F4 slightly better at reducing fogging and F5 slightly better at reducing VOCs. The stripping agents in F2 and F4 were designed to bind up and remove non-MAH VOCs via an extra Read this article online at short.compositesworld.com/LFRT-VOCs For background on LFT and D-LFT online, read “Reinforced Thermoplastics: LFRT vs. GMT” | short.compositesworld.com/LFRTvsGMT vacuum-degassing step, during inline compounding of the D-LFT charge prior to molding, so its impact would be short-lived, albeit at a critical point when VOCs are more easily controlled. Likely, it would not remove VOCs during subsequent molding, post-mold treatments or part service life. Not all commercial extruders are equipped for vacuum degassing, but for applications where VOC/fogging reduction is important, it might be worth the additional cost. F5’s adsorbent (an inorganic, micro-porous, organophilic powder) has a large capacity to bind with and permanently lock up VOCs on its surface. Because it doesn’t melt and stays well dispersed without migrating to the part surface and volatilizing (even if the polymer is remelted), it might continue to sequester VOCs throughout the part’s service life. However, further research will be necessary to verify this. Notably, only F3 experienced no mechanical property degradation during testing. F4 suffered a big drop in tensile strength, while F5 showed slightly lower tensile strength and significantly lower notched Izod impact values. Those with the worst VOC/fogging results (F2 and F3) had increases in tensile strength and low-temperature notched Izod, possibly because their older technologies create fewer unintended interactions with the polymer matrix. The study demonstrates that source reduction and use of newer stripping agents and adsorbents can reduce VOCs and fogging. Addcomp’s Martin says the next logical area to explore is possible synergies between the three strategies when employed in the same formula. He reports that work is underway on PRIEX coupling agent grafting levels — initial work is said to look promising, with grafting doubled — while simultaneously further reducing free MAH and VOCs/fogging. Contributing writer Peggy Malnati covers the automotive and infrastructure beats for CW and provides communications services for plastics- and compositesindustry clients. peggy@compositesworld.com Walton Process Technologies, Inc. Autoclaves Bond Presses Ovens Batch Process Controls Service/Repair Retrofit/Relocate Mansfield TX 682-518-9002 Parts Best Customer Service in The Industry www.autoclaves.com 38 SEPTEMBER 2015 CompositesWorld
OCTOBER 26–29, 2015: CONFERENCE / OCTOBER 27–29, 2015: EXHIBITS DALLAS, TEXAS USA / DALLAS CONVENTION CENTER EXPERIENCE THE FUTURE OF THE INDUSTRY 550+ Exhibits | 300+ Conference Sessions | 7,100+ Attendees | 45+ Countries Business Meetings | Product Displays | Innovation Awards Manufacturing Demonstrations | Poster Sessions IT’S ALL AT CAMX www.theCAMX.org COMBINED STRENGTH UNSURPASSED INNOVATION REGISTER TODAY Produced by
Page 1 and 2: Part-per-Minute Epoxies: THERMOSETS
Page 3 and 4: TABLE OF CONTENTS SEPTEMBER 2015 /
Page 5 and 6: The cutting edge technology found i
Page 8 and 9: PERSPECTIVES & PROVOCATIONS Outer s
Page 10 and 11: BUSINESS INDEX CW Business Index at
Page 12 and 13: TRENDS The fabled Oshkosh Fly-in, f
Page 14 and 15: TRENDS AEROSPACE Automating inserts
Page 16 and 17: TRENDS Vacuum Test Unit Compact, li
Page 18 and 19: TRENDS MONTH IN REVIEW Notes on new
Page 20 and 21: TRENDS AUTOMOTIVE Quilted Stratum P
Page 22 and 23: TRENDS AEROSPACE Huge acquisitions
Page 24 and 25: TRENDS ENERGY US wind energy: Found
Page 26 and 27: TRENDS AEROSPACE NASA to enlist rob
Page 28 and 29: TRENDS Laser chemical vapor deposit
Page 30 and 31: WORK IN PROGRESS Fused-particle too
Page 32 and 33: WORK IN PROGRESS Sealing the frame,
Page 34 and 35: WORK IN PROGRESS they could do furt
Page 36 and 37: WORK IN PROGRESS VOC reduction stra
Page 38 and 39: WORK IN PROGRESS for lowering overa
Page 42 and 43: Fan Blade High-Pressure Compressor
Page 44 and 45: MARKET OUTLOOK FIG. 3 Thrust revers
Page 46 and 47: MARKET OUTLOOK feature, made at Air
Page 48 and 49: Automotive composites: Thermosets f
Page 50 and 51: FEATURE / AUTOMOTIVE COMPOSITES Fas
Page 52 and 53: FEATURE / AUTOMOTIVE COMPOSITES (IA
Page 54 and 55: Mubea Carbo Tech: High-quality auto
Page 56 and 57: PLANT TOUR FIG. 1 Monocoque tubs vi
Page 58 and 59: PLANT TOUR FIG. 5 Parts, parts ...
Page 60 and 61: PLANT TOUR FIG. 6 CF + steel Mubea
Page 62 and 63: PLANT TOUR Read this article online
Page 64 and 65: INSIDE MANUFACTURING Composites upg
Page 66 and 67: INSIDE MANUFACTURING 1 Tubular poly
Page 68 and 69: INSIDE MANUFACTURING environmental
Page 70 and 71: CALENDAR Composites Events Sept. 8-
Page 72 and 73: APPLICATIONS COMPOSITE BRACKETS FOR
Page 74 and 75: NEW PRODUCTS Product Showcase » MA
Page 76 and 77: NEW PRODUCTS » TESTING & MEASURING
Page 78 and 79: MARKETPLACE MANUFACTURING SUPPLIERS
Page 80 and 81: FOCUS ON DESIGN Automotive front ax
Page 82 and 83: FOCUS ON DESIGN Simplified design I

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