The heat resistance of non-metallic polymer rollers varies depending on the specific material, and overall they have a certain degree of heat resistance, but there are also certain limitations. The following are some common heat resistance characteristics of non-metallic polymer roller materials:


Ultra high molecular weight polyethylene: It has good heat resistance and can be used for a long time in environments below 80 ℃. Within this temperature range, its mechanical properties, wear resistance, and other basic properties can remain relatively stable without significant deformation, softening, or performance degradation issues. When the temperature exceeds 80 ℃, the performance of ultra-high molecular weight polyethylene will gradually decrease.


Nylon: In general, ordinary nylon material rollers can work normally at temperatures around 100-120 ℃. Nylon has a high melting point and exhibits good toughness at low temperatures, while also maintaining good mechanical properties and dimensional stability within a certain range of high temperatures. However, when the temperature exceeds its tolerance range, nylon will experience problems such as thermal deformation and reduced strength, and prolonged use at high temperatures will accelerate the aging process of nylon.


Polyurethane: The heat resistance of polyurethane is usually around 80-100 ℃. Within this temperature range, polyurethane can maintain good elasticity, wear resistance, and mechanical strength. However, polyurethane is more sensitive to high temperatures. When the temperature exceeds 100 ℃, its performance decreases significantly, and it may become soft, sticky, and affect the normal use of the roller.


In practical application, the temperature of underground coal mine and other working environment is usually not too high, generally about 30-50 ℃, and the heat resistance of the non-metallic polymer idler can basically meet the requirements. But if non-metallic polymer rollers are used in some special high-temperature environments, suitable materials need to be selected according to the specific situation, and corresponding cooling or insulation measures need to be taken to ensure the performance and service life of the rollers.