What is the specific function of PVC plasticizers? -- Guangyuan Ruifeng New Materials

Category: Plasticizers (popular science, no products)

Release Time: 2020-08-03

Summary: Plasticizers are indispensable in the processing of PVC products. As one of the essential processing aids for PVC products, what exactly is its function?

Plasticizers are indispensable in PVC processing. As one of the essential processing aids for PVC products, what exactly is its function? (750 plasticizer, environmentally friendly plasticizer, how to use PVC crosslinking agent)

The role and properties of plasticizers in PVC: The properties of plasticizers in PVC include compatibility with PVC, plasticizing temperature, plasticizing efficiency, and durability.

1. PVC Plasticizer

(1) Compatibility with PVC As a plasticizer for PVC, it must have good compatibility with PVC. Plasticizers with poor compatibility are prone to migration and exudation from the surface of the product, not only losing their plasticizing effect but also affecting the appearance of the product.

(2) Plasticizing Temperature The plasticization of soft PVC refers to the process of forming a uniform material with PVC through melting. The plasticizing temperature is related to the type of PVC resin, the type and amount of plasticizer, and other auxiliaries in the formulation. Generally speaking, plasticizers with good compatibility and strong solvation ability have lower plasticizing temperatures.

(3) Plasticizing Efficiency For different types of plasticizers, the amount required to achieve the same hardness of PVC material is different. Taking the amount of DOP as the benchmark, the relative amount required for other types of plasticizers to achieve the same hardness is called the plasticizing efficiency of that plasticizer. (750 plasticizer, environmentally friendly plasticizer, how to use PVC crosslinking agent)

(4) Durability The durability of plasticizers includes volatility resistance, migration resistance, and extraction resistance. Generally speaking, the volatility of plasticizers mainly depends on the molecular weight, while migration is related to the compatibility between the plasticizer and PVC.

(5) Other Properties The properties of plasticizers also include cold resistance, electrical insulation, flame retardancy, and mildew resistance.

2. Environmentally Friendly Plasticizer

Four-step plasticization theory of PVC: First step, the plasticizer enters the pores of the PVC resin particles; second step, the surface of the resin particles is swollen by the plasticizer, and at the same time, the inside of the particles undergoes strain; third step, all particles are swollen by the plasticizer, and the plasticizer is dispersed between the macromolecules. (750 plasticizer, environmentally friendly plasticizer, how to use PVC crosslinking agent)

The first three steps of the plasticization process are completed as much as possible during the powdering process. Fourth step, the mixture of PVC, plasticizer, and other auxiliaries is heated to a molten state to form a uniform soft PVC material, and finally completes the plasticization process.

PVC plasticizers are widely used in coatings, PVC plastic particles, unfilled calendered films, artificial leather, cable materials, sheets, films, soft and hard pipes, shoe soles, rubber and plastic strips, foamed materials, films, and flame-retardant conveyor belts. Especially suitable for PVC plastic steel doors and windows, PVC profiles, PVC boards, decorative materials, foamed hard boards, and all products using plasticizers.

3. Plasticizer

Years of practice have proven that Guangyuan Ruifeng New Materials plasticizer has a high-speed dissolving ability for PVC, shortens processing and plasticizing time, has a 20% higher tensile strength after adding fillers, better mechanical properties than DOP, a smooth and bright product surface, good mechanical stability, good gloss, improves the flexibility, heat distortion, and flexibility and adhesion of the product, high plasticizing efficiency, good compatibility, is not easy to oxidize and volatilize, can inhibit the exudation of oil, etc. More importantly, the product has a better plasticizing effect when used with DOP and DBP. (750 plasticizer, environmentally friendly plasticizer, how to use PVC crosslinking agent)

Keywords: What is the specific function of PVC plasticizers? -- Guangyuan Ruifeng New Materials

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