The important influence of raw materials on the processing of plastic barrels

- Sep 14, 2019-

Plastic barrel manufacturers scale development conditions Mature plastic processing is developing from low quality, high energy consumption to high quality, low energy consumption, multi-variety and high technology. The plastic barrel industry utilizes enterprises to enhance their competitiveness and viability in the market through technological innovation and industrial restructuring. The processing market of the plastic barrel industry has been standardized and operated by the market, and the division of labor has been clearly defined. From the loose to the compact development, the industrial agglomeration has increased, and the scale development conditions are mature.

The field of plastic barrels will continue to expand, and it is necessary to develop different types of products with high use value. With the improvement of the level of plastic processing technology, more plastic varieties will be subdivided, which will promote the market specialization and segmentation, and the overall level of the plastics industry will be improved.

The effect of plastic barrel processing on the production of crystal raw materials

1. The influence of raw materials actually refers to the residual catalyst influence of raw materials.

In fact, many times it is caused by equipment. For example, the die-cutting part of the blown film machine is poorly designed and has a dead angle, which causes a small amount of raw materials to be heated, over-polymerized and degraded for a long time. The length-to-diameter ratio of the blow molding machine and the poor die design are poor. Etc.; above the screw or on the inner wall of the barrel, due to long-term accumulation, some charred things are produced, and these charred things can be used as gel points to continuously adsorb more impurities onto it, and also continuously adhere to the film. Causes a so-called crystal point.

In summary, regular cleaning of the molding equipment is beneficial to reduce crystal point production.

There are some catalyst residues in the production of the polymer. During the molding process, the polymer melt containing the catalyst sticks to the surface of the production equipment. At high temperature, the residual catalyst continues to undergo catalytic polymerization on the polymer, thus forming an excessive polymerization. Things.

Different resin manufacturers have different polymerization equipments and processes, and the purity of residual catalysts is different. It has different effects on the crystal lattice generation of the polymer in the film formation. For example, the residual catalyst content in the polymer is low, the equipment structure is good, and the raw materials are good. It has fewer crystal points.

The crystal point is usually caused by machinery, processing technology, materials, and the like. However, the mechanism by which the polymer produces a crystal point is due to the generation of a polymer, so that it is possible to cause a crystal point as long as a polymer is likely to be generated.

2. The effect of oxygen in the polymer is mainly because when the processing temperature is high, oxygen will oxidize the polymer to generate free radicals to adsorb on the wall of the die, and the free radical acts as an active center to initiate the reaction of other polymer molecular chains, forming a high here. The unstable polymer at a concentration becomes a motley point at high temperatures.

Adding a certain amount of antioxidants prevents oxygen from forming on the crystal point.

3. Influence of processing technology and equipment The processing technology is mainly affected by temperature control, etc. The raw materials are heated, over-polymerized and degraded for a long time, which leads to the generation of crystal points.