Modification of Regeneration Polyurethane by Blend with Ternary Nylon

摘要

Regeneration polyurethane was completely originated from waste polyurethane fibers by solid-phase alcoholysis under dynamic shearing condition, and then modified with ternary nylon. The effect of ternary nylon on the process of solid-phase alcoholysis has been investigated by infrared spectrum and torque rheometry. The results showed that the ternary nylon has strong affinity with the regeneration polyurethane due to hydrogen bonding taking place among them. The crystalline texture of regeneration polyurethane was changed via modified with ternary nylon, which was detected by XRD. The modified regeneration polyurethane was vulcanized by dicumyl peroxide. The mechanical properties and dynamic mechanics performance of regeneration polyurethane rubber were changed by ternary nylon. The mechanics performance results showed increasing hardness and tear strength of regeneration polyurethane rubber with increasing ternary nylon addition. With growing amount of ternary nylon, the tensile strength and abrasion loss of regeneration polyurethane rubber firstly increased and then decreased. When ternary nylon added, the glass-transition temperature of regeneration polyurethane rubber went up, and the tan δ of regeneration polyurethane rubber declined. With ternary nylon added, the glass-transition temperature of regeneration polyurethane rubber was increased, and the tan δ of regeneration polyurethane rubber was declined.