A kind of polyester cord, its preparation method and its application in bias tire
A cord and polyester technology, applied in the field of polyester cord, can solve the problems of high pre-shrinkage rate, easy water absorption of nylon cord, poor dimensional stability, etc., achieve good dimensional stability, low water absorption, and improve breaking strength and fracture elongation effect
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Embodiment 1
[0046] A preparation method of polyester cord, comprising the following steps:
[0047] (1) Spinning process: slicing—drying—screw extrusion—melt distribution pipe—spinning box—spinning assembly—slow cooler—circular air cooling—oiling—drawing—winding to obtain raw silk , the performance of the precursor silk is as shown in table 1;
[0048] The process parameters are: spinning speed: 4800mpm; slow cooler temperature: 335°C; draw ratio: 2.13 and intrinsic viscosity: 1.06g / dl;
[0049] (2) Impregnation process: lead-off - front cloth storage rack - first bath dipping - first suction - first zone drying - stretching - second bath dipping - second suction - second zone Drying-setting-kneading cloth knife-back cloth storage rack-coiling; obtain polyester cord, and the performance of said polyester cord is as shown in Table 2;
[0050] The process parameters are as follows: drying temperature in the first zone is 160°C and drying tension in the first zone is 700g; stretching tempe...
Embodiment 2
[0053] A preparation method of polyester cord, comprising the following steps:
[0054] (1) Spinning process: slicing—drying—screw extrusion—melt distribution pipe—spinning box—spinning assembly—slow cooler—circular air cooling—oiling—drawing—winding to obtain raw silk ;, obtain precursor silk, the performance of described precursor silk is as shown in table 1;
[0055] The process parameters are: spinning speed: 4800mpm; slow cooler temperature: 260°C; draw ratio: 2.08 and intrinsic viscosity: 1.02g / dl;
[0056] (2) Impregnation process: lead-off - front cloth storage rack - first bath dipping - first suction - first zone drying - stretching - second bath dipping - second suction - second zone Drying-setting-kneading cloth knife-back cloth storage rack-coiling; obtain polyester cord, and the performance of said polyester cord is as shown in Table 2;
[0057] The process parameters are as follows: drying temperature in the first zone is 160°C and drying tension in the first ...
Embodiment 3
[0060] A preparation method of polyester cord, comprising the following steps:
[0061] (1) Spinning process: slicing—drying—screw extrusion—melt distribution pipe—spinning box—spinning assembly—slow cooler—circular air cooling—oiling—drawing—winding to obtain raw silk , the performance of the precursor silk is as shown in table 1;
[0062] The process parameters are: spinning speed: 4800mpm; slow cooler temperature: 230°C; draw ratio: 2.09 and intrinsic viscosity: 1.00g / dl;
[0063] (2) Impregnation process: lead-off - front cloth storage rack - first bath dipping - first suction - first zone drying - stretching - second bath dipping - second suction - second zone Drying-setting-kneading cloth knife-back cloth storage rack-coiling; obtain polyester cord, and the performance of said polyester cord is as shown in Table 2;
[0064] The process parameters are as follows: drying temperature in the first zone is 160°C and drying tension in the first zone is 700g; stretching tempe...
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Abstract
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