JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 38

FEATURE “Resins and Gelcoats” Structural, environmental and processing advantages of polyurethane pultrusion Pultruded parts have long been fabricated using polyester or other types of resins. When polyurethane resin is substituted, the intrinsic properties of polyurethane allow for advantageous changes to the pultrusion process and result in superior properties in the finished part. JOHN HAYES, PRINCIPAL SCIENTIST, POLYURETHANE COMPOSITES AND CRAIG SNYDER MARKET CHANNEL REPRESENTATIVE BAYER MATERIALSCIENCE LLC or decades, the pultrusion process has been utilized to manufacture composite parts. Resins used in the process have traditionally included polyester, vinylester, epoxy or other resins. Using polyurethane in the pultrusion process is a relatively new development. Bayer MaterialScience (BMS) LLC is making significant strides in furthering polyurethane pultrusion technology and has experienced a number of commercial successes with polyurethane pultruded products. A wide range of benefits This new two-component polyurethane chemistry is based on a proprietary blend of polyols and a highly reactive isocyanate that was selected to optimize the processing characteristics for pultrusion. These characteristics include: low viscosity, to ensure good fibre wetting, long relative gel time to make setup and shutdown easy and forgiving, rapid polymerization to allow for high process speeds, good surface finish, and competitive cost. The polyurethane pultrusion process offers a wide range of benefits compared with other materials. It allows the use of a higher concentration of fibreglass, making the end product substantially stronger. When window frame components are made from fibreglass-reinforced pultruded polyurethane, for example, they become eight times stronger than PVC frames. They are also 40 times less conductive than aluminium, so they are much better insulators. And because pultruded polyurethane frames are less brittle, they won’t crack or splinter, resulting in superior fastening. Inline Fibreglass Ltd. of Toronto, Canada, is now producing window frames using the polyurethane pultrusion process and Bayer MaterialScience’s Baydur PUL 2500 polyurethane resin. By pultruding polyurethane resin, Inline can now produce larger, stronger, more complex parts with thinner walls (Figure 1). The polyurethane pultrusion technology allows the manuFig. 1: Polyurethane pultruded window facture of window profiles from Inline Fibreglass Ltd lineals that are vastly superior to their aluminium, wood and vinyl counterparts. Therefore, Inline is able to provide new offerings for the window frame manufacturing industry – and is exploring a variety of new applications in other industries as well. To fully understand the multiple benefits polyurethane offers, it is advantageous to take a closer look at the physical and mechanical properties of this material, as well as the fabrication and environmental advantages polyurethane pultrusion offers. Mechanical/physical properties Polyurethane offers improved physical properties across the board, compared with other resins such as unsaturated polyester or vinylester. As an example, Baydur PUL 2500 polyurethane resin, formulated specially for pultrusion applications, exhibits superior flexural strength, flexural modulus and short beam shear compared with other resins used for pultrusion. (See the “More Information” box). In fact, the strength and stiffness properties of polyurethane are two to five times greater than those of polyester resins. JEC Composites Magazine / No38 January - February 2008

JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008

Cover
Edito
CONTENTS
- Companies
NEWS WORLDWIDE
- Agenda of events
- Equipment: Cutting tools
- Innovations
BUSINESS
- Market survey
- Niche markets
- Marketing
- Resins
FEATURE - RESINS & GELCOATS
- Gelcoats
- Composites in the world
USERS’ PLATFORM
- Applications
KNOW-HOW
- Design
- Nanoparticles
- Measure
A profile of the JEC Group’s activities for 2007/2008
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - Cover
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 2
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - Edito
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 4
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 5
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - CONTENTS
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 7
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - NEWS WORLDWIDE
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 9
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 10
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 11
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Agenda of events
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 13
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Equipment: Cutting tools
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 15
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Innovations
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 17
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Market survey
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 19
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 20
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 21
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 22
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 23
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 24
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 25
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Niche markets
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 27
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 28
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Marketing
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 30
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 31
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - FEATURE - RESINS & GELCOATS
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 33
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 34
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 35
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 36
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 37
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 38
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 39
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 40
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 41
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 42
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Gelcoats
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 44
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 45
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 46
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 47
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - USERS’ PLATFORM
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 49
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Applications
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 51
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 52
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 53
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Design
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 55
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 56
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 57
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 58
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 59
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Nanoparticles
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 61
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 62
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 63
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - - Measure
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 65
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 66
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - A profile of the JEC Group’s activities for 2007/2008
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - II
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - III
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - IV
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - V
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - VI
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - VII
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - VIII
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - IX
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - X
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XI
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XII
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XIII
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XIV
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XV
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - XVI
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 67
JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 68
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