JEC COMPOSITES MAGAZINE - Issue #38 - January/February 2008 - 33

Resins Tab.1: Typical liquid and cured resin properties for Envirez® 1807 Tab. 3 Typical SMC properties of formulation in Tab. 2 made with ENVIREZ1807 and standard PG-Maleate resin ® Property at 25°C Viscosity Styrene content Acid value (solid) Density SPI gel time (82,2°C, 1,0%BPO) Time to peak exotherm Peak exotherm Method Unit mPas % Mg KOH/g g/cm3 Min Min °C Envirez 1807 850 29.5 27 1.10 7.5 11.4 213 Property Tensile (Mpa) Tensile modulus Flexural (Mpa) Flexural modulus Impact, notched (J/M) Impact, unnotched (J/M) Glass, % Shrinkage* (in/in) ENVIREZ® Soy resin Typical SMC (Control) 102 10.789 194 9.823 940 1.260 29 -0.00052 0.480 81 12.979 208 11.070 1.068 1.269 28.7 -0.0006 0.490 * Cold part / cold mold Typical cured resin properties Tensile strength Tensile modulus Elongation at break Flexural strenght Flexural modulus Heat distortion temperature ASTM D638 ASTM D638 ASTM D638 ASTM D790 ASTM D790 ASTM D648 MPa MPa % MPa MPa °C 40 3000 1.56 57 3000 135 Water absorption, % Growing market acceptance Envirez 1807 is widely used in the agricultural, construction, marine and transportation industries. The demand for Envirez resin products has increased substantially over the past two years, especially in the consumer market, which has experienced a growing demand for “green” products. Many factors have contributed to the market acceptance of renewable resource-based resins for composites applications. Research has shown a growing public interest in the future of our environment. Many articles have covered the issue of global warming as related to an increased presence of CO2 and other greenhouse gases in the atmosphere. Lastly, there are increasing concerns regarding the depletion of natural oil reserves and the dependence on oil from politically unstable countries. Calculations demonstrated that 17,000 kg of Envirez 1807 resin save 10 barrels of crude oil when compared to a standard PGmaleate resin. The saving is based on the net energy consumed in manufacturing as well as farming and processing soybean and corn into oil and ethanol respectively. The same batch of resin is estimated to remove 15,000 kg of carbon dioxide (CO2) from the atmosphere. As oil becomes more expensive (the price of oil-derived chemicals has increased two fold over the past three years), bio-based products will be the future of the chemical industry. Chemicals derived from biomass currently account for 8% of the chemical industry’s production, but this figure is projected to reach 20% by 2010-2015. The technology involved in the manufacture of bio-based products is developing rapidly. Advancements in bio-catalysis and computer modelling will drive this change, and the bio-products sector is projected to reach $300 billion by 2015-2020. ©2007, Ashland More information: www.ashland.com Contact : sfrattini@ashland.com (RTM), infusion and pultrusion applications, thus providing a drop-in replacement for petroleum-based resin products. Table 2 describes a typical SMC formulation and Table 3 draws a comparison between an SMC made with a PGmaleate resin and the Envirez 1807 resin. Tab.2: Typical SMC Formulation Component ENVIREZ 1807 Soy/Corn Resin Styrene Monomer PVAc Blend Rubber Copolymer Viscosity Reducer Catalyst Inhibitor Mold Release Filler B Side Glass Fiber Weight % 13.8 1.9 3.7 3.7 0.2 0.3 0.2 1.2 46.1 1.4 28 The resin has proven to behave effectively with the most commonly-used low profile additives, such as polyvinylacetate, polymethylmetacrylate and saturated polyesters. No38 January - February 2008 / JEC Composites Magazine

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

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