Polyamides glass fiber composite

Karger-Kocsis J. and Friedrich K. (1988). Fracture behaviour of injection-molded short and long glass fiber-polyamide 6.6 composites. Composites Sci. Techno . 32, 293-325,... 

Karger-Kocsis J (1991) Environmental stress corrosion behavior of polyamides and their composites with short glass fiber and glass swirl mat. Polym Bull 26(1 ) 123—130... 

The matrix resins for foamed composites include rigid pol)ruretha-nes, unsaturated polyesters, vinyl esters, and their hybrid resins, such as, unsaturated polyester-urethane hybrid resins and vinyl ester-urethane hybrid resins. The reinforcing fibers include glass fibers, carbon fibers, and organic fibers such as polyamide fiber (Kevlar, DuPont), polyamide-... 

Typical concentration range stainless steel fiber - 1-7 wt%, 30 wt% or more graphite, 15-50 wt% carbon black for conductive materials, glass spheres and fibers up to 70 wt%, carbon fiber - 20 wt%, silicon oxide and silicates up to 40 wt%, LCP up to 30 wt%, wollastonite - 40 wt% (can be used in conjunction with glass fiber,copper/polyamide-11 composite was made with 90 wt% spherical copper powder ... 

U.S. Pat. No. 3,720,641 [21] describes a process of blending an aromatic polyamide molding resin with reinforcing fillers, such as glass fibers, asbestos, cellulose fibers, and cotton fabric paper, with the fillers ranging from 2 to 70% by weight based on the total molding composition. 

It is well accepted that the good properties of the isotactic polypropylene as an engineering polymer matrix in thermoplastic composite materials and engineering blends are seriously affected by the inability of this polymer to develop an adequate level of interfacial interaction with polar components such as mineral fillers (calcium carbonate) and reinforcements (talc, mica, wollastonite), synthetic reinforcements (glass fibers, carbon fibers, and nanotubes), or engineering polymers such as polyamide, aliphatic polyesters, and so on. 

An example of a typical material composition is the combination of a polymer and a filler. Because compounding is a techiuque that can complement the drawbacks of conventional polymers, it has been studied over a long period and its practical apphcations are well known. Reinforcing materials such as short-fiber are often used for compounding with thermoplastic polymers in order to improve their mechaiucal or thermal properties. Polypropylene and polyamide (nylon) are used for the thermoplastic polymers, while glass fiber and carbon fiber are mainly used as reinforcing materials. A few ttm... 

Cut-resistant gloves are fabricated from a cut-resistant composite yarn having a core yarn and a first wrapping yarn helically wrapped around the core yarn. The core is of 56-220 dtex glass fiber filament yarn. The first wrapping is a 110-680 dtex para-aramid yarn. An additional yarn is made from aliphatic polyamides or polyesters. Further, the lining yarn is a composite yarn of 110-560 dtex of an elastomer [97]. 

N66G-30 Polyamide-66 with 30 % glass fiber, PA-66 Polymer Composites... 

The reinforcement of thermoplastics, notably polypropylene (PP) and polyamide (PA), with short glass fibers is a classical method to improve polymer mechanical properties. Fibers are dispersed more or less homogeneously in the polymer by melt compounding techniques such as twin screw extrusion to produce compounds ready for injection molding. Molded parts benefit from the better mechanical properties of the reinforcing fibers as the fibers bear a considerable part of the load applied to the composite structure. 

Hydrolysis resistant polyamide-610 compositions comprising glass fibers, copper, and nucleating agent. The nucleating agent is carbonblack/talc mixture. ... 

Polyamide resin composition comprises a copolyamide resin and a nucleating agent. The copolyamide resin is produced by poly condensation of adipic acid with a trans-1,4-bis(aminomethyl)cyclohexane+ci5 -1,4-bis(aminomethyl) cyclohexane. The nucleating agent is a combination of polyamide-66 and glass fiber and/or talc. The nucleating agent shortens cycle time. ... 

A Perwuelz, C Gaze, W Piret. Morphological and mechanical properties of glass-fiber-reinforced blends of polypropylene/polyamide 6,6. J Thermoplastics Composite Materials 6 176-189, 1993. 

Traditionally, material design requirements that suit such demanding end-use applications have been limited within the domain of engineering plastics based on polyamide 6 or 66, polyester alloys, and polyacetal type resins. However, as described in Chapter 1, glass fiber-reinforced polypropylene (GFRP) composites continue to gain a market share in automotive molded parts. 

A. Hassan, R. Yahya, A. H. Yahaya, A. R. M. Tahir and P. R. Hornsby, Tensile, impact and fiber length properties of injection-molded short and long glass fiber-reinforced polyamide 6,6 composites. Journal of Reinforced Plastics and Composites, 23, 969-986 (2004). 

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