Impact resistance glass composites applications

A major property improvement achieved through plasticization is the enormous reduction in the glass transition temperature, T, of PVC so that pliability and impact resistance of the plasticized composition is retained over a wide temperature range. Lowering of T is so important in the free volume theory that it is considered by some synonymous with plasticization. Many essential commercial applications of flexible vinyl depend upon this property modification. Without low-temperature flexibility, some of the... 

By virtue of significant advances in chemical coupling and glass-fiber sizing technology, chemically coupled polypropylene composites can be manufactured to exhibit strength and stiffness required for elevated temperature applications, for example, in hot climates or under the hood in automobiles (60-150°C). At the other end of the temperature spectrum, elastomer modification plus filler addition to maintain stiffness provides the means for low-temperature impact resistance in subzero Arctic locations (-30 to -40°C). 

While polymer blends are used for a wide variety of purposes, those related to toughness or impact resistance constitute the largest tonnage. Similar results are seen with composites note the effect of carbon black on rubber, and glass fibers on plastics. However, specific applications depend on physical properties and morphology, treated next. 

It is well established that the addition of rubber or thermoplastic to the resin or rubber coating of the glass fabric prior to lamination improves the impact resistance in glass/epoxy laminates [189,190], Thermoplastic additions are more lucrative when considering their high-temperature applications and the compromises that are made in mechanical properties other than toughness in rubber-modified glass/epoxy composites. 

---