Effect on Flexural and Tensile Strength

A similar consideration (see above section) can be applied to flexural and tensile strength. The same coupling agents, both maleated polyolefins and silanes, affect flexnral and tensile strength of WPC quite differently, from decreasing through practically no effect to increase up to 100-160% (Tables 5.9, 5.11, and 5.13). 

Of 29 cases of maleated polyolefins effects on WPC flexnral strength, listed in Table 5.9 and 5.11, in five cases the apparent increase was within 20%, which was within a common error margin, mainly for low concentrations of Polybonds and Fnsabond (less than 2% w/w), and in 24 cases an increase of flex strength was observed in the range of 30-230% (Epolenes, Polybonds, Ensabonds, Integrates, and Orevac). 

TABLE 5.13 Effect of maleated polyolefins on flexural and tensile strength of WPC (the data were assembled based on Table 5.9 and 5.11) 

Coupling agent Increase of flexural strength (%) Increase of tensile strength (%) 

COMPOSITION OF WOOD-PLASTIC COMPOSITES COUPLING AGENTS 

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