A preparation device for heat-resistant ultra-high molecular weight polyethylene fiber products

Abstract

The invention relates to the field of fiber equipment, in particular to a preparation device for heat-resistant ultra-high molecular weight polyethylene fiber products, including a winding mechanism for winding and coating heat-resistant ultra-high molecular weight polyethylene fibers on the yarn core Yarn; water soaking mechanism, including a water container with water in it, for the yarn core passing around the covering yarn to make the covering yarn absorb water; freezing mechanism, with a low-temperature chamber, when the water-absorbed covering yarn passes through the low-temperature chamber The water condenses into ice to form ice silk; and the coating paraffin mechanism is used to coat the liquid paraffin on the outside of the ice silk and condenses rapidly when it is cold to form a dense paraffin layer that prevents water vapor from escaping. The invention can wrap water and paraffin as the phase change energy storage material on the ultra-high molecular weight polyethylene fiber, and the paraffin wax can seal the water outside the ultra-high molecular weight polyethylene fiber at the same time as the phase change energy storage material, so that the thermal energy It is blocked out for a short time to ensure that the ultra-high molecular weight polyethylene fiber maintains a high tensile strength.

Description

technical field [0001] The invention relates to the technical field of fiber material production equipment, and relates to a preparation device for heat-resistant ultra-high molecular weight polyethylene fiber products. Background technique [0002] One of the design standards for commonly used cables: when the cable is short-circuited and overloaded, it can bear a maximum temperature of 250 degrees Celsius, and the duration of the high temperature does not exceed five seconds; the high heat generated in a short period of time will inevitably act on the main bearing mechanical force through heat conduction. armor layer. [0003] On the other hand, the English name of ultra-high molecular weight polyethylene is ultra-high molecular weightpolyethylene (UHMWPE for short), which is polyethylene with a molecular weight of more than 1 million. Molecular formula: —(—CH2-CH2—)—n—, density: 0.936~0.964g / cm3. The heat distortion temperature (0.46MPa) is 85°C, and the melting point i...

AI Technical Summary

Problems solved by technology

[0004] Chinese Invention Patent CN201410704931X discloses a reinforced flame-retardant thermal insulation composite material, and proposes to use paraffin wax to make phase-change heat storage materials, which can meet certain strength requirements while realizing heat-absorbing thermal insulation functions; In the field of materials, although to a certain extent it puts forward the demand for heat resistance and ensuring tensile strength, since the upper temperature limit of buildings usually does not exceed 70°C, although this patented technical solution can meet its requirements as a building material to a certain extent However, this technical solution cannot be used for reference in industrial production fields such as cable armor layers; specifically, there are the following technical problems: the existing technology uses paraffin as the main component to make phase-change heat storage materials, and phase-change heat storage materials are attached On the side of the support material to ensure that the support material does not significantly reduce its tensile strength due to overheating

However, when there is an instantaneous high temperature above 200 degrees Celsius in the temperature environment, in order to ensure the state of the supporting material, the amount of paraffin wax used as a phase change heat storage material is relatively large, and the overall quality of the final composite material is greatly improved, which makes the application scene affected. Second, after the paraffin wax heats up, it releases heat gradually and slowly, so that the supporting material is baked at high temperature for a long time, which will also cause the material properties to deteriorate; third, it is impossible for the composite material to maintain an absolute level state when it is applied to the cable , a relatively large amount of paraffin will fill the gap between the phase change heat storage material and the support material after being heated and melted, so that the liquid paraffin gathers to the low point, which strengthens the heat resistance of the low point, while the heat resistance of other points is almost The low point of the composite material will pull the support material asymmetrically, forming a vulnerable point; fourth, the paraffin wax makes the phase change heat storage material, the existing technology needs about four hours of cooling and solidification process, and the phase change heat storage material in this process is relatively It is difficult to purchase and store heat storage materials, and it is not conducive to continuous production

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