Izod integral

Impact Strength. Figure 6, notched Izod impact strength, shows one of the main reasons for the interest in chopped integral strands (c/s) as RRIM urethane reinforcement. The nonreinforced urethane polymer used in this study had an impact value of approximately 12 ft-lb/in. Reinforcement with 20% milled glass fibers lowers this value to about 5 ft-lb/in. (Column B). 

The LCPs retain 70% of their notched Izod impact values down to a temperature of about —270°C (—450°F). They are also resistant to bleaches, chlorinated organic solvents and alcohols. They have extremely low gas-permeation rates compared to commercial packaging films. Their ionic extractables are well below those needed for corrosion-free environments for integrated circuit chip apphcations. The... 

Four types of Si-PAA s were evaluated in 30% GR Valox-type PBT polyester. Aside from producing chopped strand with outstanding bundle integrity, the polyazamides generally outperformed A-llOO aminosilane in strength and thermal properties. Also, except for Y-5987, the polyazamides clearly outdistance the monomeric coupler in Izod impact strength. 

---