What Is The Difference Between Plasticizer DOP And DOTP?

Nov 06, 2024|

1. Introduction of DOP and DOTP

DOP plasticizer: The chemical name is dioctyl phthalate, which is a general-purpose plasticizer, and its plasticizer effect is caused by the weakening of the aggregation between molecular chains in the polymer material. DOP plasticizer is mainly used for the processing of PVC grease, but DOP plasticized PVC is mainly used in artificial leather, film, wire and cable, packaging materials and so on.

DOTP plasticizer: chemical name is dioctyl terephthalate, its liquid form is colorless low-viscosity liquid, and it is widely used in various kinds of products with high temperature resistance and insulation, such as: cable protective cover, PVC soft products, artificial leather and so on.

2. Different advantages

DOP plasticizers: For DOP plasticizers, the cold resistance is excellent, the condensation point is 4 ° C, and it can be normally produced at -18 ° C. DOTP plasticizer: It has the characteristics of high temperature resistance, cold resistance, extraction resistance, non-volatilization, electrical insulation and good soft performance, which can effectively improve the hardness and deformation of products. It is an ideal replacement for DOP plasticizers.

3. Different application range

DOP plasticizer: widely used in the processing of polyvinyl chloride resin, acetate resin, rubber and ABS resin and other polymers, can also be used in dyes, dispersants, paint and so on.

DOTP plasticizer: Because of its high temperature resistance, high insulation properties suitable for a variety of products, such as: is the production of temperature resistance 70°C cable material, or instead of DOP plasticizer used in PVC leather, pvc film, packaging materials, wire and cable, can also be used in neoprene rubber, nitrile rubber, EPDM rubber and other products as softener.

Application of DOP in rubber products

Although the main role of DOP is to improve the performance and processability of rubber, it also plays an important role in many specific rubber products. The following are several typical application scenarios:

  • Tire manufacturing: DOP is used to improve the elasticity, wear resistance and cold resistance of tires, so that tires have good performance in high and low temperature environments.
  • Rubber pipe: In the manufacturing of rubber pipe in the automotive and mechanical industries, DOP can improve the flexibility and pressure resistance of the pipe to ensure its reliability under harsh conditions.
  • Rubber seals: DOP plasticized seals have higher ductility and anti-aging properties, and are widely used in construction, machinery and home appliance industries.
  • Cable sheath: The application of DOP in cable sheath helps to improve the electrical insulation performance of rubber materials, and enhance its chemical resistance and aging resistance.

 

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