Glass fiber-reinforced PBT

Janzen, W., and Ehrenstein, G. W., Hysteresis Measurements for Characterizing the Cyclic Strain and Stress Sensitivity of Glass Fiber Reinforced PBT, SPEANTEC, May 1989. 

Table 15.4 The mechanical properties of glass-fiber-reinforced PBT [15]...

The basic composition of matter patents had long since expired when Celanese sampled the market in 1970 with a glass fiber reinforced PBT product designated X-917. This product was subsequently called Celanex polyester molding compound. Eastman Kodak followed Celanese early in 1971, and General Electric followed Eastman Kodak later in the same year with Valox PBT polyester resin. Since that time a dozen or more additional companies around the world have entered (and some have subsequently exited) the business. 

Angle between direction of measurement and direction of flow Fig. 68 Influence of orientation on shrinkage of glass fiber reinforced PBT [90], BASF AG... 

Fig. 4.17 Tensile strength of glass fiber reinforced PBT in dependence on temperature [12Cam].

Figure 4.35 Stress vs. strain at various temperatures for LANXESS Pocan 63225—20% glass fiber reinforced PBT resin.

Figure 4.41 Flexural modulus vs. temperature for Celanese Celanex general purpose glass fiber reinforced PBT resins [3].

Figure 16.2 Dry-as-molded (DAM) versus moisture-conditioned room temperature tensile properties for 30% glass fiber-reinforced SPS/nylon blends and 30% glass fiber-reinforced PBT. (Moisture-conditioned samples were conditioned at 40°C and 50% r.h. for 1 week.).

Figure 6.40 Flexural stress amplitude versus cycles to failure of Celanese Celanex 2300 GV/30—general-purpose, 30% glass fiber-reinforced PBT [12]. 

The hydrolic stability of glass-fiber-reinforced PBT, PET and PC was studied by Kelleher et al. [42] following the changes in MFI during the process of hydrolytic degradation. Their entire approach was similar to that used earlier for reinforced PBT [43] and PC [44]. Because MFI is related to the degree of polymerization, the following relationship was developed [44] to study the rate of hydrolysis ... 

Figure 9.41 Variation of melt flow index with hydrolysis time for 30% glass-fiber-reinforced PBT pellets at 95% relative humidity. (From Ref. 42.)...

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