With the progress of the development of the plastics industry and processing technology, expanding applications of plastics, plastic additives varieties is also increasing, the current has become the many items of fine chemical industry.

China is development of halogen-free flame retardants are inorganic flame retardants first direction, the main varieties of nano-nano-aluminum hydroxide and magnesium hydroxide flame retardants. In developed countries accounted for more than half of the inorganic flame retardants total. Aluminum hydroxide and magnesium hydroxide flame retardants safety and environmental protection, but inorganic and organic compatibility is poor, a large amount of inorganic easily reduce the mechanical properties of plastic products.

    Organic phosphorus-based flame retardant, low smoke, low toxicity, halogen-based flame retardant is an important alternative. Phosphorus resources in our country is a big country, the development of phosphorus-based flame retardant has advantages in resources, in 2012 the world is largest enterprise organophosphorus flame retardants - Albemarle Corporation announced its withdrawal from the US organic phosphorus flame retardant production, this is our organophosphorus resistance retardants outlet to provide greater market space.

    Heat stabilizer additives are mainly used in PVC products processing, improved thermal stability for PVC products. Conventional heat stabilizers are lead heat stabilizers, since the toxicity of lead, the United States and Europe are rapidly reduce the use of lead-containing heat stabilizers, some European state by 2015 a full cessation of the use of lead heat stabilizers.

    Focus on the development of lead-free heat stabilizers variety of rare earth heat stabilizers, organotin heat stabilizers and calcium - zinc composite heat stabilizer. Chinese enterprises in the global lead in realizing the industrialization of rare earth heat stabilizer, rare earth elements are mainly raw material of lanthanum, cerium-based rare-earth compound products, health and safety, non-radioactive, over the years the production of plastic toys for export in the international market enjoy considerable popularity.

    Composite heat stabilizer can be integrated more heat stabilizers characteristics, including calcium - zinc composite heat stabilizer nontoxic, mainly used in food packaging plastics, plastic wrap and other products, but the thermal stability is not ideal, to in a wider audience, needs and other heat stabilizers used in conjunction.

    However, each time the processing of plastics, polymers once selected, would need to consider is the choice of what kind of aid, as well as its usage. Plastic additives whether the election was correct, a direct impact on processing, product performance and service life. The selection of additives, generally need to consider several key issues.

1. The compatibility of the additives with the polymer

 

    Refers to compatibility with the polymer additive can be uniformly mixed well together, no precipitated phase separation properties. Aid necessary long-term stability in the presence of the article, so as to play its due role, we should try to use good compatibility with the polymer additives.

2. aid for processing conditions adaptability

The same polymer, due to the different processing methods used, additives required are not the same.

3. To help maximize synergies Jing

A plastic often used a variety of additives, these auxiliaries in a system, often to interact with each other, if fit properly, have a synergistic effect when used, is called "synergy."

4. The article uses constraints on aid

    Plastic additives choices often restricted use products, such as plastic products always in contact with people, especially those of food and packaging materials, such as blood transfusion, more closely related to human health.

  

    Thus, not only make plastics additives polymer easy to process, and largely make up for the deficiencies of the polymer itself, such as to improve the performance of products, extend the service life. So it is no exaggeration to say that, with no processing aid, there is no development of the plastics industry.