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Application of MC nylon in agricultural machinery

浏览: 作者:tangyazhong 时间:2019-06-28 分类:News
MC nylon is short for monomer cast nylon. Its products have superior physical and chemical properties, wide application range, large input/output ratio and obvious technical and economic benefits. MC nylon is also one of the fiv...

MC nylon is short for monomer cast nylon. Its products have superior physical and chemical properties, wide application range, large input/output ratio and obvious technical and economic benefits. MC nylon is also one of the five major engineering plastics products vigorously advocated and developed in China. Since the introduction of technology and equipment in 1993, our group has developed into a mature process plan for the modification of products, the stability control of physical and chemical properties of products and the manufacture of complex products, which has greatly expanded the practical application scope of products.

1. Performance of MC nylon

MC nylon product is a kind of high molecular weight organic compound, its molecular weight is 35 ~ 70 thousand, which is 1 times higher than the general nylon (20 ~ 30 thousand). Therefore, various physical and mechanical properties are higher than the general nylon, which is highlighted in the following aspects.

(1) physical performance. MC nylon has smaller water absorption than general nylon, about 0.9%, while general nylon is about 1.9%, so it has good dimensional stability.

(2) mechanical properties. The hardness of MC nylon is higher than that of general thermoplastics, the brinell hardness is about 21kg/cm2, the tensile strength is over 900kg/cm2, and the bending strength, compression strength and impact resistance are higher than most thermoplastics. The rigidity of MC nylon is also outstanding, with tensile strength modulus up to 3.6×104kg/cm2 and bending elasticity modulus up to 4.2×104kg/cm2 (at room temperature). Good friction and wear performance, compared with copper and bauxite in the test machine, has better self-lubrication performance. Under the load of 4.6kg/cm2, the thermal deformation temperature of MC nylon is 150℃~190℃, and the heat resistance of maxi is about 55℃, which exceeds most projects


2. Product application

It can be seen from various physical characteristics indexes of MC nylon that, as a kind of special engineering plastics, MC nylon can be used in many harsh working environments, especially in mining machinery and agricultural machinery. In terms of the application of agricultural machinery, weituan engineering plastic products factory has developed more than 50 kinds of products in 3 categories, mainly including shaft sleeve, elastic shock absorbing block of shaft coupling and sealing ring, leading products are chain tractor trolley and wear-resistant shaft sleeve on various agricultural machinery. Especially on the combine harvester various vulnerable parts, coupling, xinjiang -2 type harvester used in the mt5-c plum spring elastomer, all kinds of pump coupling in the long life shock absorber block. The sealing ring product has each kind of oil cylinder sealing ring and dustproof sleeve, the large water pump sealing ring and so on. In the manufacturing process, the products used in different working environments are modified, such as shaft sleeve products. Through modification, the self-lubricating and wear-resistant properties are increased, the service life is greatly improved, and the maintenance cost and time are saved for users. For shock absorbing block products, emphasis is put on improving its toughness and impact resistance, which can maintain high stability and long service life in harsh working environment. It is worth mentioning that the use of MC nylon products can simplify the structure of machinery parts under certain operating conditions. For example, all kinds of tensioning wheels on agricultural machinery can be used without bearing, and the nylon tensioning wheel sleeve can be directly operated on the shaft, greatly reducing the manufacturing cost and maintenance cost.

MC nylon production process is simple and easy to master, general regimental factory can produce, and as long as the simple mold, can cast large mechanical parts, weight from a few kilograms to several hundred kilograms. According to the production capacity of the equipment, the products of any weight can be made, most of its plastic molding equipment can be made by themselves, so it has a wide range of promotion and development prospects.