Reaction type feeding machine special for TPU

Abstract

The invention discloses a reaction type feeding machine special for a TPU. The reaction type feeding machine comprises an alternating current motor, a gear transmission case and a feeding cylinder which are obliquely arranged on a base, an output shaft of the alternating current motor is connected with an input shaft of the gear transmission case through a coupler I, two output shafts of the gear transmission case are arranged in parallel and rotate in the same direction, the rear end of the feeding cylinder is provided with a feed inlet, and the front end of the feeding cylinder is provided with a discharge outlet; two mandrels are arranged in the feeding cylinder, the rear end of each mandrel is connected with the output shaft of the gear transmission case through a coupler II, a screw element is installed on each mandrel in a fixed and locked mode through a flat key and a locking nut, and the portions, corresponding to the same positions of the two mandrels, of the screw elements are meshed in a 90-degree parallel mode; each screw element comprises a threaded sleeve, mixing blocks, meshing sheets and levorotary mixing blocks. The reaction type feeding machine special for the TPU is easy to operate and convenient to control and can meet the technological requirements of clients for producing high-quality TPU high molecular materials.

Description

technical field [0001] The invention relates to TPU production equipment, in particular to a special reactive feeder for TPU. Background technique [0002] Thermoplastic polyurethane elastomer (TPU for short) has excellent high tension, high tensile strength, toughness, aging resistance, wear resistance, oil resistance and other incomparable characteristics of other plastic materials. It is widely used in medical and health care, electronic appliances, industry and sports, etc. On the one hand, it is a mature environmental protection material. TPU is a polymer material obtained by co-reacting and polymerizing diisocyanate molecules (MDI, TDI), additive butanediol (BDO) and polyols. According to the molecular structure, it can be divided into two types: polyester type and polyether type. [0003] At present, domestic production of high-quality TPU polymer materials all use imported equipment for reaction polymerization. Due to the increasing domestic demand for high-quality...

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Problems solved by technology

[0005] At present, in domestic equipment, high-speed agitating feeders are generally used for pre-reaction, so it is difficult to improve the quality of TPU produced, especially the TPU polymer materials required for TPU films used in medical and health care. The quality of domestic materials cannot be compared with Imported materials are comparable in quality

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