Device and method for manufacturing glass fibre reinforced nylon 66 heat-insulating strips

Abstract

The invention discloses a device for manufacturing glass fibre reinforced nylon 66 heat-insulating strips, which comprises a feeding system, an extruder, a pressure control system, a die, a shaping die, a heating control system, a cooling system and a pull system. The feeding system comprises conveying pipelines and a hopper and each conveying pipeline conveys a single component of raw materials to the hopper and then feeds the material to the extruder; and the extruder is a double-screw extruder. The invention also discloses a method for manufacturing the glass fibre reinforced nylon 66 heat-insulating strips on the basis of the manufacturing device. In the device and the method, each component of the raw materials does not need to be mixed for pelletizing in advance, and a mode of conveying the single component of the raw materials with each conveying pipeline is adopted, so a pelletizing process and a melting and plasticizing process of the materials are reduced; the heat-insulating strip product with high performance and stable quality can be obtained to meet using requirements; and the application and development of the heat-insulating strip product and the manufacturing process technology are promoted.

Description

technical field [0001] The invention relates to the technical field of production of heat insulation strips for building aluminum profiles, in particular to a production device and method for glass fiber reinforced nylon 66 heat insulation strips. Background technique [0002] At present, building energy-saving and heat-insulating aluminum profiles generally adopt heat-insulating cold bridge technology to achieve the purpose of heat insulation and energy saving. The heat insulation bar used as a heat break cold bridge is connected in the middle of the inner and outer aluminum alloy frames. Not only must it be an excellent heat insulation material, but its strength and anti-aging performance must meet the requirements of aluminum alloy doors and windows. The traditional prior art usually adopts plastics such as PVC and ABS to produce heat-insulating strips, but its output and quality are low. During use, it is found that its performance cannot meet the requirements of use at ...

AI Technical Summary

Problems solved by technology

At present, the prior art production process has the following technical defects: (1) The material is extruded by a single-screw extruder after being mixed and granulated, and after two times of melting and plasticizing, the nylon 66 resin and additives are decomposed to a large extent. It becomes low molecular weight, low product performance; and the extrusion speed is slow, and the production efficiency is extremely low; (2) after the molten material is vented, it is very difficult to extrude for glass fiber reinforced nylon 66 materials, and the surface quality of the product is serious. Air bubbles are easily formed inside the product, and the expansion of the material in the vent section leads to low mechanical properties, low dimensional accuracy of the product, and product quality cannot be guaranteed at all

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