At present, rubber conveyor belts are developing in terms of high performance, light weight, energy saving, environmental protection, safety, etc., and the requirements for environmental protection are becoming more and more stringent. Therefore, the raw and auxiliary materials of rubber conveyor belts must be selected carefully. In the actual production and application process, the rubber conveyor belt cover rubber is a key part that determines the performance and purpose of the belt body. So which rubber materials should be selected for ordinary environmental protection conveyor belt cover rubber? Which rubber compounding agent is better to use?
1. Environmental protection conveyor belt rubber coated raw materials
Under normal circumstances, ordinary environmental protection conveyor belt cover rubber generally uses natural rubber or styrene butadiene rubber as the main raw material, or uses natural rubber/styrene butadiene rubber together. Natural rubber has high mechanical strength and good elasticity, and styrene-butadiene rubber has better heat resistance, abrasion resistance and aging resistance; natural rubber/styrene butadiene rubber combined rubber has good mechanical properties, heat resistance and aging resistance. In actual production, rubber product manufacturers can also use environmentally friendly reclaimed rubber in natural rubber, styrene-butadiene rubber, or natural rubber/styrene-butadiene rubber combined rubber, to reduce raw material costs.
2. Environmental protection conveyor belt coated rubber accessories
Ordinary environmental protection conveyor belt vulcanization system generally chooses the traditional sulfur vulcanization system, with the use of appropriate types of accelerators, the synergistic effect of zinc oxide and stearic acid further improves the vulcanization efficiency and prevents scorching. Reinforcing system chooses carbon black to reinforce, and proper amount of reinforcing resin can be used when necessary. Conveyor belts that have certain requirements for flame retardancy can use chemical flame retardants and inorganic magnesium hydroxide together. Zinc hydroxide is an environmentally friendly filled flame retardant. The chemical antioxidant and paraffin wax effectively delay the aging time of the environmental protection conveyor belt.
3. Reference formula for environmental protection conveyor belt coating
55 parts of natural rubber, 45 parts of styrene-butadiene rubber, 1.6 parts of sulfur, 1.2 parts of accelerators, 7 parts of zinc oxide, 5 parts of stearic acid, 3.5 parts of antioxidants, 1 part of paraffin wax, 17.5 parts of environmentally friendly flame retardants, magnesium hydroxide 6 parts, 15 parts of reinforcing resin, 45 parts of carbon black; total: 202.8 parts. Ordinary environmental protection conveyor belt cover rubber 2LLYY1210 production formula can appropriately use rubber softeners and plasticizers according to performance and processing requirements.
In the production process of ordinary environmental protection conveyor belts, it is necessary to consider the environmental protection of raw and auxiliary materials and whether the interaction between various compounding agents will generate polluting substances. When using reclaimed rubber to reduce the raw material cost of ordinary environmentally friendly conveyor belt cover rubber, rubber product manufacturers need to choose environmentally friendly reclaimed rubber, appropriately adjust the conveyor belt rubber reference formula, and optimize the quality of the conveyor belt while reducing costs. The editor has the opportunity to continue to share with you the selection of raw and auxiliary materials and formula design of other rubber layers of ordinary environmental protection conveyor belts.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits