TPE, TPR materials contain plasticizers (plasticizers)?

  • Time of issue:2022-01-08
  • Views:948

TPE, TPR materials contain plasticizers (plasticizers)?

  • Categories:Elastomer knowledge
  • Author:SPP
  • Time of issue:2022-01-08
  • Views:948

In the confirmation of TPE, TPR materials contain plasticizer ① before, first to briefly understand the plasticizer.

  Plasticizer, also known as plasticizer, is used to add to the plastic, reduce the glass transition temperature of plastic resin, increase plasticity, improve plastic flexibility and processing performance of a class of processing aids. Plasticizers are divided into many kinds, the most common are phthalate plasticizers, such as DOP (dioctyl phthalate), DBP (dibutyl phthalate), etc. DOP, DBP plasticizers are confirmed to cause endocrine disruption in humans, can damage male reproductive performance, stimulate female precocious puberty. Plasticizer DOP is most common in the processing of PVC resin, which is also a very important factor affecting the environmental friendliness of PVC.

  Plasticizer in addition to the application to improve the processing performance of plastics (PVC), has also been widely reported to be used in beverages or alcohol. For example, the toxic clouding agent incident that emerged in Taiwan on May 31, 2011, was used to add toxic phthalates to beverages to make them appear more viscous. Another example is the November 19, 2012 incident of serious excess plasticizer in mainland China, although there is no official confirmation that plasticizer was added to the liquor as a viscosity enhancer, but it is confirmed that plasticizer in liquor products is a specific migration, mainly from plastic catch wine barrels, plastic wine pipes, wine pumps in and out of latex tubes, plastic cloth to seal wine jars, plastic inner lids of finished wine, plastic bags packaging of finished wine, plastic bottles of finished wine packaging, finished wine plastic barrel packaging, etc. And many of these plastic products are processed using cheap PVC materials.

  TPE, TPR thermoplastic elastomer materials contain plasticizers, TPE, TPR materials belong to SEBS, SBS thermoplastic styrene-butadiene rubber blended modified materials. tpe, TPR although plastic injection molding processability, but based on its rubber characteristics, the industry more will be classified to the category of rubber materials. In the process of blending SEBS,SBS rubber modified TPE,TPR materials, additives are usually added to improve the processing properties of SEBS,SBS. These additives rubber industry is usually called operating oil or processing oil, the role is similar to the plasticizer added to plastic (PVC). The processing oil used to modify SEBS and SBS to produce TPE and TPR is a straight-chain alkane oil②, which is usually environmentally friendly and non-toxic.

  Therefore, on whether TPE, TPR materials contain plasticizers (phthalates), the answer to the plasticizer is that TPE, TPR, although in the processing process will add the efficacy of additives similar to plasticizers - alkane oil, but this processing oil is environmentally friendly, no toxic side effects on humans. And a number of environmental testing shows that TPE, TPR materials do not contain plasticizers (phthalates and salts ③), in line with RoHS, REACH, EN71-3, ASTM-F963 many environmental testing standards, is a high environmental protection of soft materials.


  ① In view of the impact of the plasticizer incident in the past two years (the text will mention), the public understanding of plasticizer is a class of toxic substances that can cause harm to human reproduction, in fact, there are also environmentally friendly varieties of plasticizer, but in comparison, the cost is much higher.

  ② tire factories with raw materials butadiene rubber filling oil is used aromatic oil, aromatic oil containing benzene ring is carcinogenic, while straight chain alkane oil is a non-toxic and safe substance.

  ③ plasticizers are most commonly DOP and DBP, also contains other phthalates (Phthalates). The toy industry said 3P, 6P, 16P, etc. refers to phthalates and their salts.

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