1 / 23

Kuralon™

Kuralon™. Polyvinyl-alcohol (PVA) CAS # 9002-89-5. Kuralon PVA. Properties tensile strength (dry) 48,000-110,000 lb/in^2 specific gravity: 1.26-1.3 regain of 4.5-5.0% absorbency: 12% shrinkage is 10% @ 215ºC begins to turn yellow at 220ºC Melts at 230-235ºC Does not burn readily.

gabi
Download Presentation

Kuralon™

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Kuralon™ Polyvinyl-alcohol (PVA) CAS # 9002-89-5

  2. Kuralon PVA • Properties • tensile strength (dry) • 48,000-110,000 lb/in^2 • specific gravity: 1.26-1.3 • regain of 4.5-5.0% • absorbency: 12% • shrinkage is 10% @ 215ºC • begins to turn yellow at 220ºC • Melts at 230-235ºC • Does not burn readily

  3. Kuralon PVA • Method of Preperation • vinyl acetate polymerized to polyvinyl acetate • saponified to polyvinyl alcohol • dissolved in H2O and wet spun into an aqueous salt bath • resulting yarn is stretched, heat treated, reacted with formaldehyde to 30% degree of substitution • Availability • continuous multifilament • monofilament • staple fiber • comes in black, blue, or green

  4. Kuralon PVA • Uses • reinforced concrete • tyre cords • filter cloths • nets, ropes, cloths • clothing materials

  5. Kuralon PVA - FRC • Designed for long-term concrete crack control. • 1lb/yard^3 reduces shrinkage cracking +40% after 28 days. • Makes for a 50% improvement when compared to other polypropylene fibers • recomended 1-2lbs/yard to reduce plastic and long term shrinkage.

  6. Kuralon PVA - FRC Current Reports: • reduces concrete cracking by 40% • http://www.allbusiness.com/chemicals/plastics-rubber-industry-resins/5131279-1.html • http://findarticles.com/p/articles/mi_m0EIN/is_2005_Nov_9/ai_n15786264/ • “molecular bonding between the newly engineered fibers and concrete is 300% stronger than that of polypropylene, fiberglass or steel fibers” • http://concreteproducts.com/mag/concrete_bond_strength_improves/

  7. Sources 1) Kuraray Co. Ltd. Website http://www.kuraray.co.jp/kii/english/ 2) Hawley's Condensed Chemical Dictionary (15th Edition) http://www.knovel.com.ezproxy.uky.edu/web/portal/ 3) Myanmar Ministry of Science: http://www.most.gov.mm/techuni/media/TE_03028_5.pdf 4) http://www.nycon.com/RSC15.htm

More Related