On the surface, TPEE and TPE only have one more letter, but in fact, the performance of the two is very different. Today, I will introduce to you how to distinguish the two materials. Through the separate description of the properties of the two materials, I believe that the method of discrimination will be clear in everyone's mind. Let's first look at the characteristics of TPE.
It is well known that TPE materials refer to thermoplastic elastomer materials that are blended and modified based on SEBS. TPE material is a general term for thermoplastic elastomer materials (including TPU, TPR, TPV, TPEE, etc.), and the TPE usually used for encapsulation belongs to polystyrene TPE elastomers. TPE has excellent soft touch and slip resistance, so it is often compounded with other plastics such as PP, ABS, PC, PA, PC/ABS, etc., and injection-bonded with plastic to improve the comfort of the product. With the in-depth development of the TPE industry and the improvement of consumer demand, the application of composite injection molding of TPE materials and hard plastics is becoming more and more extensive. Such as sports equipment, electronic appliances, daily necessities, medical products, auto parts, hardware tools, etc.
At the same time, the TPE strap material is easy to be processed and formed. It is easy to demould, and the processing is simple. The nozzle can be reused. At the same time, the product is also wear-resistant, scratch-resistant, and soft and smooth: the surface of the product is not easy to stick to dust. Good tensile strength, durable, not easy to break, anti-aging, anti-yellowing.
The processing methods of TPE encapsulation generally include a one-shot two-color injection molding process and a general-purpose injection molding machine's secondary injection molding process, that is, inserting the pre-made product into a specific mold and then injecting TPE soft rubber for overmolding. The comfortable touch and softness of TPE improves the grip and comfort of the product, and is favored by customers. So what is the special use of TPE encapsulation? Today, I will tell you about it.
Processing characteristics: Although TPE zero-degree material is very soft, it still has the basic characteristics of thermoplastic elastomer. It belongs to thermoplastic material and can be formed by injection molding, extrusion casting (infusion) process. Recommended injection molding temperature conditions 130 ~ 200 ℃. (different hardness and material compounding system, different molding temperature). Under the same conditions, the extrusion temperature can be slightly lower than the injection temperature by 5~10℃.
When the weather temperature is higher, the TPE particles tend to agglomerate. When using TPE compounds, the problem of particle agglomeration is more or less encountered. After the product is processed and packaged and stored, it will stick together, especially in the hot summer, there will be a high probability of clumping. So how to prevent the agglomeration of TPE material particles? What are the precautions? Today, Xiaobian will give you a specific explanation.