Automobile fan tape is a trapezoidal cross-section tape installed in the drive fan at the front end of a car or tractor engine, mainly including compression adhesive, buffer adhesive, stretch adhesive and wrapping adhesive. The rubber layer of the automobile fan belt needs to withstand complex compression, stretching, shearing and other multiple deformations during work, and the requirements for the rubber material are very strict. To reduce the production cost of automotive fan strips, it is necessary to choose the appropriate recycled rubber products according to the specific performance requirements of each rubber layer of the fan belt.
1. Performance requirements of each part of the automobile fan belt
(1) Compression layer adhesive
The compression layer of the automobile fan belt is the supporting material of the whole tape, which requires the rubber to have a certain hardness to resist concave deformation, and maintain good heat resistance and flexural resistance in the case of high strength and elasticity, small compression deformation, small hysteresis loss, low dynamic modulus, raw rubber generally choose neoprene with good flexion and fatigue resistance, or use it with natural rubber, butadiene rubber to improve the comprehensive performance of the tape.
(2) Buffer layer adhesive
The upper and lower sides of the rope are periodically stretched, compressed and sheared during use, which can absorb the impact force on the rope when the engine starts or changes speed. Raw rubber is generally made of neoprene or used in combination with natural rubber.
(3) Wrapping glue
The wrapping adhesive should have good fatigue resistance and heat resistance, wear resistance, oil resistance, and ozone aging resistance.
(4) Stretch the layer adhesive
The rubber of the automobile fan with the stretching layer should adapt to the periodic stretching state of the layer, especially the adjustable distance among the pulley wheels is small, so its deformation frequency is large. Therefore, it is required that the elasticity of the rubber material is good, the permanent deformation is small, and the strap is prevented from elongating during use.
2. It can produce recycled glue for automobile fan belts
(1) Neoprene recycled glue
Neoprene recycled rubber is mostly processed from cable sheaths as the main raw material, with high strength, good elongation, good adhesive performance, heat resistance, oil resistance, ozone resistance and other performance characteristics, can be mixed into different parts of automobile fan belt compression layer, buffer layer, wrapping glue and other parts, especially for high temperature resistance, chemical corrosion resistance requirements are more stringent, and the cost of raw materials is effectively reduced under the premise of ensuring the performance of the fan belt.
(2) Styrene-butadiene recycled rubber
Styrene-butadiene recycled rubber is generally processed from hoses and tapes as raw materials, with processing performance close to natural rubber, with good wear resistance, flex resistance, elasticity, tear resistance, aging resistance, etc., and can be used with natural rubber, styrene-butadiene rubber, neoprene or butadiene rubber to produce compression and extension layer rubber for automobile fan belts, effectively reducing raw material costs.
(3) Natural latex recycled rubber
Natural latex recycled rubber is processed from waste natural rubber, waste latex and its products as raw materials, retains the basic performance characteristics of natural rubber, good elasticity, high strength, suitable for automobile fan belt E5LYY38 parts that require high elasticity and low heat generation, especially the strong layer of the fan belt such as stretch layer glue, which reduces more raw rubber costs under the premise of ensuring the performance of the finished product.
The performance requirements of different adhesive layers of automobile fan belts are different, and the variety and amount of recycled rubber used vary greatly. When using recycled rubber to reduce the production cost of automobile fan belts, you must choose the appropriate variety of recycled rubber according to the specific needs and cost budget of the fan belt, reasonably determine the mixing ratio and vulcanization formula of the recycled rubber, and continue to discuss related issues with you later.
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