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News Article
Site: http://www.nanotech-now.com/

Abstract: Haydale Composite Solutions (HCS) has announced the launch of three graphene enhanced carbon fibre pre-impregnated (prepreg) products in collaboration with SHD Composite Materials Ltd (Sleaford, Lincolnshire, UK) using epoxy resins from Huntsman Advanced Materials. The products to be launched by SHD and HCS include a structural component carbon fibre prepreg, a prototype “Out-of-Autoclave” curing carbon fibre tooling prepreg capable for fast composite part production in autoclave processing and a higher operating temperature prepreg for enhanced life and very high accuracy tooling. The primary drivers in the development of the structural component prepreg were to increase the impact resistance and compression after impact performance of carbon fibre reinforced epoxy components through the addition of graphene nanomaterials. It is anticipated that this will enable designers to develop lighter and more efficient carbon fibre reinforced epoxy structures where impact is the principal design consideration. Key target applications for this new prepreg include aerospace, automotive and high performance sports goods such as bike frames, fishing rods and racing boats. Development of the higher operating temperature prepreg is targeted at producing tooling systems with increased thermal conductivity ( to reduce process cycle times) , significantly reduced spring-back and greatly improved accuracy, improved surface finish and hardness, better impact resistance and finally increased resistance to micro-cracking through life over currently available prepreg materials. These new graphene enhanced prepreg materials are currently going through extensive evaluation and are available as prototype products to interested companies for their particular areas of application. The Technical Support teams from SHD and HCS will offer assistance in material selection and initial development of parts and tooling to interested companies and organisations planning to gain market leadership in the aforementioned sectors. Nick Smith Technical Director of SHD Composites Ltd commented “As part of our commitment to remain at the forefront of composites technology we feel that it is vital to explore the benefits that graphene can bring to our products. We see great potential in this exciting material to enhance the performance of our range of component and tooling materials.” Haydale Composite Solutions Commercial Director Nigel Finney added “This has the potential to be a real game changer for the composites industry. We are very excited about the significant improvements in thermal and mechanical performance of graphene enhanced carbon epoxy prepreg structures and look forward to further developing a novel generation of carbon fibre epoxy prepreg materials. We believe we are on the verge of a whole new range of graphene based polymer nanocomposites with some exciting and unique properties, which we believe will be of significant interest to the composite market always looking for enhanced performance.” For further information relating to this project, or use of graphene resin composites, please visit www.haydalecompositesolutions.com or contact Haydale Composite Solutions Ltd. on +44-1509-21007 or . About Haydale Ltd. Haydale Composite Solutions Ltd is a wholly owned subsidiary of Haydale Graphene Industries plc. (Haydale). Haydale has developed a patented and proprietary scalable plasma process to functionalise graphene and other nanomaterials enabling them to be dispersed efficiently into liquid resins to form concentrated master batches which can then be diluted down into formulated resins designed to meet a specific electrical, mechanical, thermal and physical property performances. Haydale Composite Solutions (previously known as EPL Composite Solutions Ltd) has developed a reputation for delivering innovative solutions in the commercial applications of advanced polymer composite materials working with global companies over more than 20 years. Haydale Composite Solutions are developing new markets and applications for graphene enhanced nanocomposite materials across a broad range of industries. SHD Composite Materials Ltd (www.shdcomposites.com) is a fast growing company whose management team have many years of experience in the manufacturing of prepregs, enabling the company to provide first class technical support in all aspects of the business. By working in dynamic partnership with their clients, SHD Composites offers exceptional levels of service and flexibility. This, coupled with a wealth of experience within the composite industry, ensures that SHD Composites provides high quality composite materials. Continued investment in Research and Development and a commitment to develop innovative materials means that SHD has the understanding and ability to develop bespoke products to suit individual client and market sector needs. For more information, please click If you have a comment, please us. Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.


News Article
Site: http://www.materialstoday.com/news/

Huntsman Advanced Materials has developed a new epoxy resin system and a new efficient process which could give an entirely new compression molding concept. According to the company, the new compression molding process, which uses a fast-cure Araldite epoxy, makes it possible to make structural composite parts with cycle times as low as one minute without any further post-curing. It is also suitable for making structural parts using thermoset technology for high-volume applications such as automotive. The company’s current system for high-volume manufacture of composite parts is the Araldite system used to make the BMW i-Series of cars.  With a cure time of two minutes at 130°C, this system gives a total cycle time of around two minutes, 30 seconds.  The latest rapid-cure Araldite epoxy system is quicker and also displays a higher Tg, enabling processing up to 150°C, and a cure time of just 30 seconds at 140°C. This means that at a press cycle time of only one minute is possible, without any further post-curing of the part.  Following curing, the epoxy system displays a tensile elongation in excess of 5% with a Tg of 120°C. Huntsman has also developed a dynamic fluid compression molding (DFCM) process to go with the new epoxy system. According to the company, the new process removes the need for high-pressure injection and in some cases, the need for a bonded fibre preform. The resin impregnation of the fibers through-thickness almost eradicates fiber-wash, a common problem with high-volume resin transfer molding (RTM) production parts, Huntsman says. In tests carried out by the company, the new process reduced the void content of laminates in comparison to conventional wet-compression molding (WCM) process. It also allowed typical porosity content of less than 1%, making it comparable to high pressure RTM (HP RTM) or autoclave prepregs. Fiber volume contents of 66% can be achieved with no special processing conditions, while feavy-tow industrial fabrics proved similarly easy to impregnate, with virtually void-free parts, even when parts were made with a 960 gsm plain weave fabric. This story uses material from Huntsman, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.


Patent
Huntsman Advanced Materials GmbH | Date: 2011-04-07

A system for illumination of a light sensitive medium includes means for patterning each of a plurality of beams using an illumination unit having at least one illumination head, the illumination head including at least two arrays of individually controllable light valves, means for projecting the patterned beams onto the light sensitive medium, means for displacing the light sensitive medium relative to the patterned beams, such that the patterned beams are scanned across the light sensitive medium in a scanning direction, means for directing the patterned beams towards the light sensitive medium by means of lenses arranged such that each lens directs a respective part of a respective patterned beam towards a respective target area on the light sensitive medium, means for spacing the arrays apart in the scanning direction, such that each of the arrays scans the patterned beams across the areas of the light sensitive medium as the light sensitive medium and the at least one illumination head are displaced relative to each other, the respective target areas scanned by the patterned beams are contiguous, means for individually controlling the individually controlled light valves of the illumination unit in dependency of the relative movement between the illumination head and the light sensitive medium, and a plurality of light emitters in the form of light guides arranged to illuminate the light sensitive medium via a light valve arrangement, the light valve arrangement including a plurality of electrically controlled light valves, wherein at least two of the light emitters are arranged to illuminate a plurality of light valves each.


Patent
Huntsman Advanced Materials GmbH | Date: 2011-04-08

The invention relates to a method of illuminating at least one rapid prototyping medium (RPM) wherein the illuminating is performed by at least two simultaneous individually modulated light beams (IMLB) projected onto the rapid prototyping medium (RPM) and wherein the rapid prototyping medium is illuminated with light beams (IMLB) having at least two different wavelength contents (WLC


Patent
Rehau Ag & Co. and Huntsman Advanced Materials GmbH | Date: 2015-10-07

The invention relates to a structural part that has a metal component, a plastic component and a bonding agent system interconnecting the metal component and the plastic component. The invention is characterized in that the bonding agent system consists of a plastic bonding agent or of a plastic bonding agent combined with a primer, the plastic bonding agent being a polyester, a polyurethane or an epoxide that is modified with a diene and/or a polyene. The invention also relates to a method for producing said structural part.

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