In the production and manufacturing of customized plastic parts, material selection and performance optimization are two key links that directly affect the quality, functionality, and service life of the customized parts, playing a decisive role in meeting the needs of different industries and application scenarios.
The Importance of Plastic Material Selection
There are various types of plastic materials, each with its unique physical, chemical, and mechanical properties. The correct selection of materials is the foundation for ensuring the successful application of plastic customized parts. Inappropriate material selection may result in customized parts failing to meet usage requirements, such as issues with strength, temperature resistance, chemical corrosion resistance, etc., which in turn can affect the overall performance and reliability of the product, and may even pose safety hazards. In addition, material selection is closely related to cost. Reasonable material selection can effectively control production costs and improve the economic benefits of enterprises while ensuring product quality.
Common Plastic Material Characteristics
（1） ABS plastic
ABS plastic has good comprehensive performance, with high strength and a good balance between rigidity and toughness. It is easy to process and shape, with high surface glossiness and good dimensional stability. Widely used in fields such as electronic and electrical casings, automotive interior parts, etc. For example, many common TV and computer monitor casings are made of ABS plastic, utilizing its excellent mechanical properties and beautiful appearance characteristics.
（2） PP plastic
PP plastic, also known as polypropylene, has the advantages of low relative density and low cost. It has excellent chemical stability and is resistant to corrosion by chemical substances such as acid and alkali. Meanwhile, PP plastic also has good heat resistance and can be used at higher temperatures. PP plastic is widely used in daily necessities, packaging industry, and some industrial fields that require high chemical resistance, such as plastic tableware, plastic bottles, etc.
（3） PE plastic
PE plastic, also known as polyethylene, can be divided into low-density polyethylene (LDPE), high-density polyethylene (HDPE), etc. according to its density. LDPE has good flexibility and high transparency, and is commonly used in film products such as plastic bags; HDPE has high strength and rigidity, and is widely used in pipe manufacturing, injection molding products, and other fields, such as common plastic water supply pipes and plastic trash cans.
（4） PC plastic
PC plastic polycarbonate has outstanding impact toughness and is one of the highest impact strength varieties in engineering plastics. It also has excellent heat resistance and can maintain good performance over a wide temperature range. PC plastic has excellent optical properties and high transparency. PC plastic is widely used in optical instruments, electronic device components, automotive lampshades, and other fields, such as screen protectors for smartphones and headlight lampshades for cars.
Dewin Industry Layout and Quality Control
It is worth mentioning that we have a branch office in Vietnam, which greatly optimizes our business scope and service capabilities. Relying on our Vietnam branch, we have established close and long-term cooperative relationships with numerous high-quality local factories. These cooperative factories have rich experience and advanced production equipment in the field of plastic processing, which can provide solid production capacity guarantee for our plastic customized parts production.
At the same time, in order to ensure product quality standards, we will regularly arrange professional teams to conduct on-site inspections at our cooperative factories in Vietnam. During the inspection process, we will conduct strict checks and evaluations on various aspects such as the procurement channels of raw materials, the implementation of production processes, and quality inspection processes to ensure product quality from the source.
Performance optimization methods
（1） Material modification
Enhanced modification: By adding fibrous materials such as glass fiber, carbon fiber, etc., the strength and rigidity of plastics can be significantly improved. Taking the reinforced plastic with added glass fiber as an example, while maintaining some of the original characteristics of the plastic, its mechanical properties such as tensile strength and bending strength are greatly improved. This reinforced modified plastic is commonly used in the manufacturing of products with high strength requirements, such as automotive parts and aerospace components.
Adding additives: Adding various additives is a common method to optimize the properties of plastics. Adding flame retardants can improve the flame retardancy of plastics, making them less prone to combustion when exposed to a fire source, meeting the fire safety requirements of industries such as electronics and construction; Adding plasticizers can increase the flexibility and plasticity of plastics, and are commonly used in the manufacture of soft plastic products such as plastic films, plastic toys, etc.
（2） Optimize the molding process
Injection molding process optimization: during the injection molding process, adjusting injection temperature, pressure, speed and other parameters has an important impact on the performance of plastic customized parts. Appropriately increasing the injection temperature can improve the flowability of plastic, making it easier to fill the mold cavity, but excessively high temperatures may cause plastic degradation and affect performance. Reasonable control of injection pressure and speed can ensure uniform distribution of plastic in the mold, reduce defects such as bubbles and weld lines in the product, and thus improve the strength and appearance quality of the product.
In the production of customized plastic parts, precise material selection and effective performance optimization complement each other. Only by deeply understanding the characteristics of various plastic materials and scientifically selecting materials based on specific application needs can high-quality products be produced.
