Four key elements of plastic modification formula

Plastic modification is a method to change the properties and improve the quality of plastics by adding auxiliaries and fillers. At the same time, plastic modification is also the most effective way to reduce the cost of plastics. The formula in plastic modification mainly includes: material selection, compound, dosage and mixing way. The modification process of plastics is not simple, and the underlying mechanism is worth studying and discussing. The four elements interact with each other, either complementing or cancelling each other, so it is no easy task to design a formula that is high performance, easy to work with, and low cost. The variety and brand of resin; the selected target resin has the closest performance to the target properties to be modified: First, subject screening is carried out on the variety of resin, such as: improving the toughness of resin, ABS, SBS and other resins are preferred; Transparent modification, resin first to consider the selection of three transparent resin PS, PMMA, PC. After determining the target resin, select the brand of resin. Specific brands of resins have more specific performance indicators, which will make the target selection more deterministic. Selection of resin: Preferably big brand, universal resin, to ensure that later procurement of resin more convenient.

the fluidity of plastics is the main aspect that affects the processing property of plastics, and it is also the important basis for selecting the processing method of plastics. Generally speaking, the addition of inorganic fillers will lead to the reduction of flow performance, so it is necessary to add flow modification to optimize. Common organic auxiliaries include decabromodiphenyl ether and tetrabromodiphenol A.

The lower the price of plastic modified formula is, the better. The use of additives in the implementation process is in accordance with the following principles: 1) Priority is given to low-price raw materials;

2) Give priority to the use of existing raw materials: no need to purchase, stable source, clear performance;

3) Give priority to the use of domestic raw materials: price fluctuations are less affected by foreign exchange and trade policies;

4) Prioritize the use of nearby raw materials: reduce the cost of inventory;

5), the preferred selection of general raw materials: wide sources, stable performance.