Plastic modification includes a large number of materials and products for filler modification and related industries. So far, it is difficult to determine the general situation of modified plastics industry, and it is difficult to say which products are modified plastics products. The Modified Plastics Professional Committee of China Plastic Processing Industry Association regards modified fillers, filler masterbatches and special granular materials as typical modified plastics products, and puts forward the struggle for specialized production, serialization of varieties and diversification of functions of specialized plastics products. Goals and slogans.

Now is the time to produce modified plastics. Under the condition of socialist market economy, we must also take this road.

Looking at the overall situation of China's plastic industry, compared with developed industrial countries, it is not difficult to find that large petrochemical enterprises provide a large number of ordinary synthetic resins and plastic products processing enterprises lack transitional industries. Direct use by production consumers. The company mainly produces a variety of high-performance products in small batches, a variety of products. It provides various intermediate or special materials for downstream plastic processing companies. At present, the functions of industry are often dispersed in large and medium-sized plastic products processing plants, and intermediate products or special materials are provided by some workshops or processes. The actual situation shows that, on the one hand, small and whole factories are not conducive to the improvement of product quality and economic inefficiency. On the other hand, downstream companies are unlikely to build some intermediate products. For example, color masterbatches are necessary for coloring various plastic products and materials, and professional color masterbatch manufacturers are best suited to provide products suitable for various resins and different colors. Any one fits only. It is obviously uneconomical and unreasonable for companies that produce color masterbatches for plastic products.

After years of practice and understanding, modified plastic products have been specialized in several aspects, and show strong vitality. For example, the domestic production capacity of the masterbatch for filler heavy calcium carbonate as filler for many polyolefin plastics products exceeds 3000 tons, which exceeds the total production capacity of hundreds of filler masterbatches in China. 200 thousand tons. In recent years, companies that mainly produce modified materials for automobiles and household appliances have emerged. The output value and profit of special materials have not only increased rapidly, but also become the leading products of some plastic processing factories. We have reason to believe that the modified plastics industry has achieved professional production, and has become the leading products of various modified plastics between the resin raw material production plant and the terminal plastic product processing plant of petrochemical enterprises, such as reinforcement, mixing and filler. Users. Industrial teams have bright prospects.

In order to achieve industrialized production, we must strive to propose serialized products, because the end-users of plastic products are often diversified, and single or several varieties of modified plastic products are unlikely to bring the best cost-performance ratio. For example, the calcium carbonate filler masterbatch used for packaging tapes and polypropylene woven bags has the granularity of calcium carbonate, in which the granularity of calcium carbonate is up to 400 meshes and is used to prepare polyethylene film. Garbage bags filler with calcium carbonate particle size in masterbatch. At least 1250 meshes are required. Polypropylene binding with the latter filler masterbatch is uneconomical because the price of the two filler masterbatches has more than doubled.

Functionalization is the goal that our modified plastics industry has been pursuing. In the past, we have been concerned about the mechanical properties of modified plastics, but they really play the role of fillers for sound, electricity, light, magnetism, combustion and even medical and life sciences, and play a high-tech modified plastics and high added value.