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Plastic buckets and other plastic products added to aid what?
Plastic buckets and other plastic products, the production and use, according to the requirements needed to add different additives to alter its performance and reduce costs. Add auxiliaries, what does?
Plastic additives added additives in plastics main purpose is to improve the processing performance, improve efficiency and reduce costs using. Additives in plastics compound proportion less, but there is a huge impact on the quality of plastic products. Different types of plastic, due to molding methods and different conditions of use, the kind and amount of additives required is also different. The main aid following categories:
1, a plasticizer
Plasticizers can increase the flexibility of plastic, extensibility, plasticity, reducing plastic flow temperature and hardness, it is conducive to plastic molding. Commonly used acid esters, sebacic acid esters, chlorinated paraffin and camphor. Our most common is camphor.
2, the stabilizer
We all know that plastics in the processing, storage and use of the process, under the action of light, heat, oxygen, occur faded, brittle, aging cracked. To delay and prevent the aging phenomenon, it must be added stabilizers. It is mainly used to prevent thermal aging, called heat stabilizers; primarily used to prevent oxidative aging, called antioxidants; mainly used to prevent photoaging, called light stabilizers, collectively referred to as stabilizers. Performance of today's best plastic stabilizers are methyl tin heat stabilizer (referred to 181), for rigid polyethylene (PVC) calendering, extrusion, injection molding and blow molding are very effective. Also, because it is safe, it is particularly used in food packaging and high definition rigid polyethylene products, at the same time, it has also been widely used in plastic doors and windows, Sheung Shui pipe, decorative materials, in order to replace other highly toxic plastic heat stabilizers. It is in the United States, Europe and Japan have been widely used. In recent years, 181 methyl tin heat stabilizer in China began large-scale application.
3, flame retardants
Plastic can be improved flame resistance flame retardant additives is called. Most plastics contain flame retardant self-extinguishing, or burn rate slowed and the like. Commonly used flame retardant antimony oxide and aluminum, boron compounds, halides and phosphates, tetrachlorophthalic anhydride, phthalic anhydride and Australia four.
4, antistatic agents
Antistatic agents play a role in eliminating or reducing the plastic surface generate static electricity. Most antistatic agent is an electrolyte that compatibility with the synthetic resin is limited, so you can migrate to the plastic surface, to absorb moisture and eliminate electrostatic effect.
5, the blowing agent
Plastic foaming agent is a can at a certain temperature gasification of low molecular weight organic compounds, such as dichlorodifluoromethane; will decompose organic gas or when heated. These gases remain in the plastic matrix is formed many fine foam structure of foams. Commonly used are azo compounds, nitroso compounds and the like.
6, the colorant
Colorants for plastics coloring. Mainly from beautification, modification. About 80% of plastics are made after the coloring of the final product.
7, lubricants
Lubricant is to improve the releasability during molding and heating the plastic to improve the surface finish of the article and a substance added. Commonly used lubricants include: stearic acid and its salts, paraffin wax, synthetic wax.
8, reinforcements and fillers
In many plastics, reinforcements and fillers considerable proportion, especially reinforced plastics and Gaisu material. The main objectives are: to improve the strength and rigidity of plastic products, or in general the addition of various inorganic fibrous materials. The most commonly used reinforcing materials: glass fiber, asbestos, silica, carbon black, silicates, calcium carbonate, metal oxides and the like.
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