Kexin polymer-PA coating solution
- Categories: 常见问题
- Time of issue: 2020-12-31 16:50:57
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Description:As the largest and most important variety of engineering plastics, PA has strong vitality, mainly because it achieves high performance after modification, followed by the increasing requirements of automotive, electrical, telecommunications, electronics, machinery and other industries for high-performance products. The stronger, the rapid development of related industries, which promotes the process of high performance engineering plastics, and makes them play an increasingly important role.
As the largest and most important variety of engineering plastics, PA has strong vitality, mainly because it achieves high performance after modification, followed by the increasing requirements of automotive, electrical, telecommunications, electronics, machinery and other industries for high-performance products. The stronger, the rapid development of related industries, which promotes the process of high performance engineering plastics, and makes them play an increasingly important role.
There are more hydrogen bonds in PA66 than in PA6. The intermolecular force of PA66 is stronger than that of PA6. Therefore, PA66 is better than PA6 in thermal properties (so the processing temperature is higher). PA66 has better rigidity than PA6, and PA6 has toughness. It is better than PA66, and the water absorption speed of PA6 is faster than that of PA66. The difference in properties between PA6 and PA66 is mainly caused by the above hydrogen bonding factors.
At the same time, with the rapid development of the TPE thermoplastic elastomer industry in recent years, the application of TPE encapsulated PA injection molding is becoming more and more mature and extensive. Many hard plastic products have improved the soft touch, grip, aesthetics and other functional characteristics of the products by introducing thermoplastic elastomer TPE materials.
TPE coated nylon (mainly refers to PA6, PA66 and its fiber-modified engineering plastics), mainly used in kitchen utensils handles, electric drill tool handles, electrical product accessories, etc. The hardness of TPE soft rubber can be adjusted by formula modification. The TPE soft rubber used for encapsulating nylon has a general hardness range of ShoreA40 to 80 degrees, of which the hardness of 60-70 degrees is the most common. The compound injection/overmolding of TPE and nylon PA generally adopts two-color injection molding machine or ordinary injection molding machine (two sets of molds are required, one mold is used to inject nylon parts, and the other mold is used to overmold TPE soft rubber to PA nylon surface, first injection of nylon parts, and then TPE injection glue to the surface of the nylon parts) and other equipment to complete. At present, many users often encounter the problem of poor adhesion between TPE and nylon when making TPE coated nylon products.
TPE coated nylon PA has always been a problem in the TPE industry. The bonding effect of TPE and PA has always plagued many manufacturers.
After several months of long-term research and development by all the scientific researchers of Kexin Polymer, the formula system of encapsulated nylon TPE has been developed and matured. Currently, there are three main series (EA, AA, CAG...) which can meet the needs of most of the customers covering nylon in the market.
Among them, the AA application is more popular among most processing manufacturers. This product has strong adhesion to modified nylon (fibrillated, boiled...) or recycled PA from any manufacturer. The bonding strength can achieve a relatively strong bond with nylon. It is suitable for all kinds of modified nylon and boiled nylon... And the price is acceptable to most manufacturers, and it is a model with a wider application range.
Kexin Macromolecule recommends that encapsulation processing factories choose powerful manufacturers when purchasing TPE materials, especially large-scale factories with relatively old R&D qualifications, to obtain supplier's comprehensive product technical support and quality after-sales service. Kexin Polymer has a professional sales technical team, one-to-one technical guidance, to provide you with professional customer service and technical support.
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