Patent ID: 11911975
Assignee: ZHEJIANG UNIVERSITY
Field: Other special machines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 5:
6. A manufacturing method of the carbon fiber reinforced plastic electrofusion fitting according to claim 1, the method comprising the following steps:
(1) a thermoplastic powder and a short-cut carbon fiber are stirred with a mechanical stirrer, and a uniform mixture is obtained; the weight fraction of carbon fiber in the mixture is 5˜20%; the carbon fiber has a diameter of 7˜10 μm and a length of 1˜5 mm; the thermoplastic powder refers to a polyethylene powder or a polypropylene powder;
(2) the thermoplastic powder and carbon fiber mixture is added into a hopper of an extruder, and the carbon fiber is evenly distributed in a plastic matrix by a screw shearing action of the extruder; short carbon fiber reinforced plastic composite is extruded, and then granulated by a granulator to obtain composite particles;
(3) a semi-finished electrofusion fitting is injection molded with the composite particles according to a conventional electrofusion fitting injection process;
(4) at least one pair of electrodes is set on a surface of the semi-finished electrofusion fitting: a layer of conductive silver glue is coated on the surface where electrodes are to be set, and then the electrodes are set on the conductive silver glue; or, electrode grooves are designed and manufactured on the surface of the semi-finished electrofusion fitting during injection molding; finally, a carbon fiber reinforced plastic electrofusion fitting with self-monitoring function of strain is obtained.