Applications glass fabrics

Because of their inherently high efficiency on dusts in all particle-size ranges, fabric filters have been used for collection of fine dusts and fumes for over 100 years. The greatest limitation on filter application has been imposed by the temperature limits of available fabric materials. The upper limit for natural fibers is about 90°C (200°F). The major new developments in filter technology that have been made since 1945 have followed the development of fabrics made from glass and synthetic fibers, which has extended the temperature limits to about 230 to 260°C (450 to 500°F). The capabihties of available fibers to resist high temperatures are still among the most severe limitations on the possible applications of fabric filters. 

The reaction product of BMI-MDA and MDA, known as Kerimide 601, is prepolymerized to such an extent that the resulting prepolymer is soluble in aprotic solvents such as NMP, DMF, and the like, and therefore can be prepregged via solution techniques. Kerimide 601 is mainly used in glass fabric laminates for electrical applications and became the industry standard for polyimide-based printed circuit boards (45). 

Glass-Based Grades. Grade G-3 is glass fabric with phenolic resin binder which shows high impact and flexural strength. It is used for thermal and mechanical applications and has good dimensional stability. 

Grade G-9, glass fabric with moisture-resistant melamine resin binder, is similar to Grade G-5 but with better electric strength properties under wet conditions. Electrical applications should be limited to operating temperatures of 50°C (122°F) or less. 

The product is processed to a condition where it is either tack-free or slightly tacky to aid in application to vertical or contoured substrates. These films may be in the form of unsupported sheet, or they may be reinforced with glass fabric, paper, or another reinforcing medium. These supported films are sometimes referred to as prepreg. 

Core Material, Plastic Honeycomb, Laminated Glass Fabric Base, for Aircraft Structural Applications... 

MII S-25392B(ASG) Sandwich Construction, Plastic Resin, Glass Fabric Base, Laminated Facings and Urethane Foomed-in-Place Core, for Structural Applications, 8 May 1968, 12 pp (FSC 9330) (AS)... 

Here, in particular, reinforced plastics like GF-UP (molding material of glass-fiber reinforced, unsaturated polyester resin) and SMC (laminar semifinished parts of glass fabric, fillers and unsaturated polyester resin) are concerned, as used in car and ship building. For these applications, suitable repair sets on the basis of unsaturated polyester resins are available that enable repair according to the following procedure ... 

R. Blum, H. Bbgner, K. Gipperich and Sean Seery An example of the application of the testing procedure described on a PTFE-coated glass fabric, in European Design Guide for Tensile Surface Structures, Brussels, 2004... 

Generally the glass reinforcement used consists of chopped strand mat with a soluble polyester powder binder or chopped rovings deposited directly into the resin film. However, for certain applications woven fabrics... 

These adhesives offer the best short-term performance of any adhesives at elevated temperatures. PBI adhesives, however, oxidize very rapidly and are not recommended for continuous use at temperatures above 232°C. PB1 adhesives require a cure at 316°C. As with polyimide adhesives, release of volatiles during cure contributes to a porous adhesive bond. These adhesives are supplied as very stiff, glass-fabric-reinforced films and are very expensive. Their applications are limited by a long, high-temperature curing cycle. 

PPG Industries - http //corporateportal. ppg.com/ United States, glass fiber for nonwoven and textile applications. Fiberglass fabrics, products, and composite structures for automotive, constmction, and manufacturing industries... 

E-glass fabric/polyimide High temperature resistant applications high energy radomes, engine fairings. 

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