For PA6, PA66, and their modified materials, the required sample for testing moisture content is generally a square plate injection molded or extruded, with a thickness of d=2.05 ± 0.05mm and a width of ≤ 100d. In general, for materials of the same quality, the larger the specific surface area, the faster the moisture absorption rate Moisture content testing also needs to be conducted according to customer requirements. Let's take a look at the ISO 62 moisture content testing method and the ISO 1110 accelerated humidity control testing method separately.

Why does stress occur? This is because the structure of the material determines its properties. During the molding process of PC/ABS, the molecular chains are forced to orient, but due to the presence of benzene rings on the molecular chains, it is difficult to de orient them. After molding, the oriented molecular chains tend to return to their natural state, but due to the freezing of the entire molecular chain, residual stress exists in the product.

For people in the plastic industry, when it comes to plastic bottles, plastic buckets, and plastic cans, they are naturally classified as blow molded products. Extrusion blow molding is a well-known method for manufacturing hollow thermoplastic parts, which targets bottles, barrels, cans, boxes, as well as containers for packaging food, beverages, daily chemical products, pharmaceuticals, cosmetics, industrial and agricultural production materials and products. Generally speaking, large blow molded containers are commonly used for packaging chemical products, lubricants, and bulk materials; Other blow molded products include balls, corrugated tubes, and toys; For the automotive manufacturing industry, fuel tanks, car shock absorbers, seat backrests, center brackets, as well as armrest and headrest coverings are all blow molded products.

Long term anti-static functional plastic masterbatch is polymerized in a reaction kettle to obtain polymer materials with long-lasting anti-static effects, which can be added to different polymer resins in different proportions to obtain a series of functional plastics with permanent anti-static properties. Masterbatches can be added to different resins according to different molding processes, thereby giving the final product the anti-static effect required by the product. The series of long-lasting anti-static functional plastic masterbatch can be compatible and blended with numerous materials, added to LDPE, HDPE, PP, PVC, ABS, HIPS, PET, PC, TPE, PA6, PA66, TPU, PBT, etc. After injection molding, blow molding, vacuum forming, spray molding and extrusion molding processing, it is used as a functional new material for various daily necessities, packaging supplies, learning supplies, household appliances, automotive interiors, military supplies, medical supplies, electronic products, children's products, clothing fibers and other purposes.

There are different types and uses of plastic resins, but from raw materials to products, an important link cannot be separated, which is coloring. In addition to the colorful natural colors, there are also industrial colors with various shapes and colors in the world, and plastic coloring is a type of industrial coloring.

According to industry standards, plastics are usually divided into seven grades, each grade consisting of a number and three arrows. These numbers and arrows are usually located at the bottom or side of plastic products, representing the specifications of the raw resin used in the product. The following are common plastic grades and the types of plastics they represent: