Newport 307. Description: Application: Benefits/Features: Recommended Processing Conditions:

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1 Newport 307 Description: Newport 307 is a 250 F (121 C) to 300 F (149 C) cure, highly toughened, controlled flow epoxy resin system. Versatile processing, excellent mechanical properties, and long out time make Newport 307 suitable for a variety of applications. Application: The low exotherm properties of Newport 307 make it an ideal product for UAV spars, marine masts, wind blade spar-caps, and other applications where very thick parts are required. It is well suited for low pressure, vacuum bag molding techniques. Newport 307 can be supplied with most commercially available fibers in both woven form (designated as NB) as well as unidirectional tape (designated as NCT), including: Carbon Quartz Aramid S-glass E-glass Other specialty fibers and fabrics Woven fabrics are available in standard commercial widths up to 60 inches (1.5 M). Unitape widths up to 39 inches (1M) are available in standard fiber weights ranging from 125 to 300 gsm. Benefits/Features: Low exotherm, scorch-resistant High toughness Excellent mechanical properties Controlled flow 30 days out time at 70 F (21 C) Available on a wide range of unidirectional fibers and fabrics Recommended Processing Conditions: Newport 307 can be cured at temperatures from 250 F (121 C) to 300 F (149 C), depending on part size and complexity. Low, medium, and high pressure molding techniques may be used to cure Newport 307. Recommended cure cycle is 50 psi (345 kpa), 3 F (1.7 C)/min ramp to 275 F (135 C), hold for minutes, cool to <140 F (60 C).

2 Page 2 of 6 Physical Properties: Gel Time 275 F (135 C): minutes Specific Gravity: 1.22 Tg (DMA, E ): 115 C (239 F) Mechanical Properties: 7781 E-Glass Reinforcement The mechanical properties listed in the following table are average values obtained from NB 307 with style 7781 woven fiberglass. All values are based using a vacuum bag oven cure, 1.5 F (0.8 C)/min ramp, 250 F (121 C) hold for 3 hours. Results are as tested, not normalized. Property Test Method RT* 160 F* 200 F* 0 Tensile strength, ksi Tensile modulus, Msi ASTM D-638 Type I Poisson s ratio ,300 21,000 21,000 0 Compressive strength, ksi Compressive modulus, Msi SACMA 1R ,000 18,300 16,700 0 Flexural strength, ksi ASTM D Flexural modulus, Msi Short Beam Shear strength, ksi SACMA 8R * Values are average and do not constitute a specification

3 Page 3 of 6 Intermediate Modulus Unidirectional Carbon Fiber Reinforcement The mechanical properties listed in the following table are average values obtained from NB 307 with MR60H carbon fiber at 40% RC. All values are based using an autoclave cure (see cure cycle that follows). Results are as tested, not normalized. Property Test Method -100 F* RT* 160 F* 200 F* 0 Tensile strength, ksi Tensile modulus, Msi ASTMD ,100 15,000 15,700 15,900 Poisson s ratio Compressive strength, ksi Compressive modulus, Msi SACMA 1R ,385 8,140 7,700 6,500 In-Plane Shear strength, ±45, ksi ASTMD-3518 In-Plane Shear modulus, ±45, Msi Flexural strength, ksi ASTMD Flexural modulus, Msi Short Beam Shear strength, ksi SACMA 8R Open Hole Compressive strength, ksi Open Hole Compressive modulus, Msi ASTM D Open Hole Compressive strain, µ in/in 5,900 4, ,800 Open Hole Tensile strength, ksi Open Hole Tensile modulus, Msi ASTM D Open Hole Tensile strain, µ in/in 8,900 10, ,000 Property Test Method -100 F* RT* 160 F* 200 F* 90 Tensile strength, ksi Tensile modulus, Msi ASTMD ,600 4,400 5,400 5,700 Poisson s ratio Compressive strength, ksi Compressive modulus, Msi SACMA 1R ,000 23,600 19,900 21, Flexural strength, ksi ASTMD Flexural modulus, Msi Short Beam Shear strength, ksi SACMA 8R * Values are average and do not constitute a specification

4 Page 4 of 6 3K Plain Weave Carbon Fabric Reinforcement The mechanical properties listed in the following table are average values obtained from NB 307 with 3K PW carbon fabric. All values are based using a vacuum bag oven cure, 1.5 F (0.8 C)/min ramp, 250 F (121 C) hold for 3 hours. Results are as tested, not normalized. Property Test Method RT* 160 F* 200 F* 0 Tensile strength, ksi Tensile modulus, Msi ASTM D-638 Type I Poisson s ratio ,700 11,600 11,000 0 Compressive strength, ksi Compressive modulus, Msi SACMA 1R ,700 8,400 6,800 0 Flexural strength, ksi ASTM D Flexural modulus, Msi Short Beam Shear strength, ksi SACMA 8R Open Hole Compression str., ksi ASTM D-6484 Open Hole Compression mod., Msi *Values are average and do not constitute a specification Newport 307 Autoclave Cure Cycle 290 Cure minutes Temperature (F) minute hold Pressure (PSI) F ( C) per minute Apply pressure during second ramp Time (min) 0 Temperature F Pressure (PSI) Vaccum (PSI)

5 Page 5 of 6 Viscosity Profile of Newport 307 A TA (model AR2000) parallel plate rheometer was used to determine the viscosity profile of the neat resin system through melt and cure. R R E5 Newport 307 Viscosity vs Time n* (poise) poise, 138 C 25 poise, 133 C 40 poise, 125 C time (min) Gel Curve of Newport C/min 2 C/min 3 C/min Gel time vs Temperature Time (min.) Temperature ( F)

6 Page 6 of 6 Prepreg Storage: Material can be stored at 40 F (4 C) for 3 months, or 0 F (-18 C) for 6 months. Out time is 30 days maximum at room temperature 70 F (21 C). Availability: Newport 307 is available on a wide variety of woven fabrics and unidirectional tapes including aramid, E-glass, S-glass, carbon, and other fibers. Some product characteristics such as areal weight, resin content, gel time can be tailored within reason to meet specific requirements. Contact Newport about any specialty fibers or requirements. Standard prepreg fabric widths: E-glass 38, 50 inches Carbon 42, 50 inches Kevlar 38, 50 inches Standard unidirectional tape widths: 12, 24, 36 inches (0.5, 1 meter) For orders, pricing, availability, technical assistance or other inquiries please contact: CORPORATE OFFICES Mitsubishi Rayon Carbon Fiber and Composites Inc. Composite Materials Division 1822 Reynolds Ave, Irvine, CA Tel: (949) Fax: (949) Sales@mrcfac.com (Kevlar is a trademark of the DuPont Company) Disclaimer: The information contained herein has been obtained under controlled laboratory conditions and are typical or average values and do not constitute a specification, guarantee, or warrantee. Results may vary under different processing conditions or in combination with other materials. The data is believed to be reliable but all suggestions or recommendations for use are made without guarantee. You should thoroughly and independently evaluate materials for your planned application and determine suitability under your own processing conditions before commercialization. Furthermore, no suggestion for use or material supplied shall be considered a recommendation or inducement to violate any law or infringe any patent.