PA6 engineering plastics have high tensile strength, good impact resistance, excellent wear resistance, chemical resistance and low friction coefficient, but high water absorption, poor dimensional stability, low rigidity and low melting point. Through glass fiber modification, mineral filling modification, and adding flame retardants, its comprehensive performance can be more excellent, and it is widely used in automobiles.
Although the auto market this year is not as good as in previous years, several major features of PA6 for vehicles are still very obvious: replacing steel with plastic, micro-foaming, replacing PA66, spray-free and new energy.
The engine cylinder head cover is made of thermally stabilized PA6+GF35 with integrated oil-air separator and PVC valve. Due to the low warpage rate, the selection of PA6+GF35 can ensure better flatness of the cylinder cover flange, which is one of the key factors for the application of the cylinder cover, considering the cover installation process and necessary sealing. This is also an important reason why the application of PA6 in cylinder head covers continues to grow.
Material advantages: reduced weight, reduced cost, high integration, better oil resistance and mixed combustion gas performance, good fluidity, wide processing temperature range, low shrinkage and warpage compared to equivalent PA66, high continuous service temperature. Compared to the more expensive equivalent PA66 grades, PA6 costs less.
The intercooler integrated intake manifold is made of PA6+GF30, which has heat aging resistance and excellent vibration welding strength. It has good performance in high temperature applications and is widely used in intake manifolds. This material is significantly better than PA66+GF grades in most applications in engine bays including manifolds. Compared with PA66 grades with the same glass fiber content, it is cost-effective and has a high continuous service temperature.
The engine cover is made of PA6-GF30 through the mucell foaming process, which can achieve lightweight, 35% weight reduction, sound insulation and noise reduction technology, and at the same time, the cost and appearance are very well controlled.
Product highlights: Based on the research on viscoelasticity of nylon materials, the foamable characteristics of the material are improved in a targeted manner, which is more suitable for the mucell process, better control the diameter and distribution of cells, and reduce the porosity.
The truck engine oil pan is made of PA6+GF35. Using this material can reduce the weight by 20-50%. Compared with the traditional cast aluminum oil pan, the cost is lower. It has good oil resistance and transmission oil resistance, and has good mechanical properties, good fluidity, low shrinkage and warpage compared to PA66 material with the same glass fiber content.
Traditionally, engine oil pans are made of PA66+GF, but in the past few years more and more oil pans have been used due to more flexible supply chains, generally lower material prices, easier processing and lower shrinkage warpage, etc. The shell is replaced with PA6+GF. Compared with traditional die-casting aluminum parts, plastic transmission oil pan is light in weight and low in cost. Traditional die-casting aluminum parts require post-processing steps such as milling, drilling, thread cutting, and deburring, while engineering plastics require only one manufacturing step.
The front-end module is an all-plastic front-end module made of PA6+GF40/50. Compared with the metal solution, the weight is reduced by 40-50%. The cost of parts is lower than that of the traditional metal version. The mechanical performance is good, the assembly steps are reduced, and the manufacturing cost is reduced.
Bumper and headlamp brackets are made of PA6+GF60. Using this material can save weight by 40-50%, the cost of parts is lower than that of traditional metals, the mechanical properties are better, the assembly steps are less, and the manufacturing cost is low.
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