| Currently, flexible composite materials enhanced with woven fabric reinforcement have been wildly used, because of its high strength, modulus and dimensional stability, it has developed very fast and deeply, as one of this materials, light conveyor belt has also been developed rapidly.When using the conveyor belt, stability and service life of products is the primary consideration. There are 3 main mechanical indexes that affect the quality of the main conveyor belt:peel properties, tensile properties and tear properties. In daily use, with the increase of time material fatigue and aging, it'll be separated between layers, that is, the destruction of the bond performance, leading to fluctuations in stability until the damage. Therefore, how to improve the adhesive strength of the belt light peel properties, is thought worthy of attention and a pressing issue.This research paper study bond properties of three commonly used light conveyor belt: conveyor belt of polyethylene, polyvinyl chloride and polyurethane conveyor belt. Based on the existing theory on interface adhesion, study how to improve the bonding capacity of the interface that is anti-stripping performance, according to three elements:wetting, reaction, interfacial residual stress. Finally, this paper has also studied the aging effect on the interfacial adhesion properties.For improving the bonding properties, taking two categories physical methods and chemical methods into account.First, for the enhancement of a weak interface layer and invasive formed by polyester fabric surface impurities and oils, tudyed different treatment methods on the first conveyor belt adhesion properties of the interface. The results show that:due to the removal of impurities surface finish, and increase of surface roughness, pre-treatment could improve the interface bond strength of conveyor belt. Process improvement is also a direction worthy of exploration, discuss how to increase the effect caused by primer process and also study the amount of tackifier. For all parameter she that impact plastination process in, we also selected three more important factors for orthogonal test, to find the best option.For the polyethylene resin with a chemically inert, we use a blend of chemical modification to increase the molecules in the active groups to enhance chemical reactivity, thereby increasing the bonding effect.The bonding properties after aging will show the stability of the products. At last, we studied different medium solutions and the heat effect on interfacial adhesion properties of conveyor belt. The results show that:the medium can influence the type and properties of the interface bond strength, but the degree will depend on medium; high temperature accelerate conveyor belt aging in different medium to damage.This paper has got some of the conclusions, which are helpful for flexible interface properties of composite materials, and it also has some reference value for actual producing.Experimental work and some conclusions included in this paper are obtained actual production conditions at the plant,so they have the utility and therefore have greater economic efficiency, for improving the bond performance of conveyor belt products. |
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