JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 44

FEATURE “Resins and Gelcoats” g…/… ISO-NPG gelcoats and barrier coats Environmental Exposures Testing of Non-metallic Material”, see Figure 1. Fig.1: Test panels in Florida Accelerated weathering When properly filtered, the xenon arc lamp simulates UV and visible solar radiation more closely than any other light source. Scott Bader uses the Suntest XLS+ machine (see Figure 2), which is an air-cooled tabletop unit. The advantage of this machine is that different filters can be used to give different spectra; however, Xenochrome 300 filters are used with no water or humidity, hence the need for Fig.2: Suntest XLS+ natural weathering. Fig.4: 1000 hours Xenon arc Blistering Scott Bader has been at the forefront in supplying the UK marine market, and blistering (or osmosis) testing has been one of the keys to success in this sector. A minimum of 12 months of blistering tests were performed on Crystic LS30PA. The blister test evaluates the surface of the panels for blisters or abnormalities and measures the water pick-up. The company developed the test and has been using it for 30 years, so it is tried and true. Testing is done in house and panels are subjected to water at 40°C. Crystic LS30PA showed no sign of blistering on its panels after 12 months, and its water pick-up was minimal (see Figure 5). Weathering results for Crystic LS 30PA Many of the weathering results are compared against competitor materials. The graphs below (Figures 3 and 4) show the (final) 12 months of Florida weathering and the 1000 hrs Xenon arc results for Crystic LS30PA. These graphs show that the Florida weathering results differ somewhat from the accelerated, thus you cannot depend solely on accelerated testing. LS30PA performs consistently well in both graphs, with a low colour difference (ΔE) and high gloss level. This is an excellent balance – visually, a shift to ~1.7 ΔE may be quite difficult to see by the human eye. Fig.5: Blistering panel in a blistering chamber Mechanical properties Another area which has significant importance is mechanical properties. The gelcoat must be flexible enough to use, but hard enough to protect the structure. For the marine industry, the aim is to obtain Lloyds approval on all fully formulated products. Scott Bader has its own materialstesting department, which does all mechanical testing. Lloyds dictates that products must be tested after a post-cure of 16 hours at 40°C and have elongation >2.5%, tensile strength >40MPa, flexural strength >70MPa and water absorption ≤70mg. Table 1 below shows that Crystic LS30PA meets all of the mechanical properties required for marine approval. Fig. 3: 12 months Florida 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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