PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Is PTFE toxic?
Classification:
Industry dynamics
Author:
FEP tube little sister
Source:
FEP tube little sister
Release time:
2008-09-17
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Is PTFE non-stick pan carcinogenic? Is PTFE harmful to human body?
In daily life, many people will encounter when using non-stick pan coating off, began to stick food, the bottom of the pot scratches and other problems, encounter these situations, many people will have questions: non-stick pan surface coating is PTFE, non-stick pan coating off will not be toxic.
First of all, a brief introduction of PTFE:
Polytetrafluoroethylene (PTFE) has excellent comprehensive performance, high temperature resistance, corrosion resistance, non-stick, self-lubricating, excellent dielectric properties, low coefficient of friction. Used as engineering plastics, it can be made into PTFE tubes, rods, belts, plates, films, etc.
It is applied to corrosion-resistant pipes, containers, pumps, valves, radar, high-frequency communication equipment, radio equipment, etc. with high performance requirements. The mechanical properties of PTFE can be greatly improved by adding any filler that can withstand the sintering temperature of PTFE.
While maintaining other excellent properties of PTFE. Filled varieties are glass fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, wear resistance, limit PV value can be increased by 1000 times.
Figure 1 PTFE tube source: Teflon tube little sister
PTFE is also known as non-stick coating or easy to clean material, this material has the characteristics of acid and alkali resistance, resistance to various organic solvents, almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, its coefficient of friction is very low, so it can be used for lubrication, but also become an ideal coating for easy cleaning of the inner layer of the water pipe. Teflon itself is not toxic to humans. The use temperature is -190~250 ℃.
Teflon is toxic but does not cause harm to the human body. Non-stick pan coating is mainly Teflon. For polymer coating, the main possible risk comes from the residual material or small molecular substances released in use. Many people worry that heating will cause the coating to decompose and release harmful substances, such as certain perfluorinated compounds.
The non-stick pan coating uses PTFE (Teflon) dispersed emulsion. Because the molecular structure of PTFE is macromolecular clusters, it is necessary to add stabilizing additives to make PTFE stably and evenly dispersed in the emulsion. At present, domestic manufacturers generally use PFOA or PFOS as additives, but PFOA and PFOS are Class 2B carcinogens. European and American countries prohibit the import of fluorine-containing polymers containing PFOA and PFOS, generally, foreign companies that produce PTFE do not use such carcinogens as additives.
Figure 2 Non-stick Pan Source: Network
Therefore, when consumers buy non-stick pans, they need to pay attention to whether the products are marked as PFOA-free and PFOS-free. If clearly indicated, the products can be purchased with confidence. In addition, PTFE can work at 260 degrees Celsius for a long time and stably, and the short-term temperature resistance can reach 327 degrees. The cooking habits of European and American consumers are generally based on less oil, medium and high temperature, and pay more attention to the original taste and nutritional value of the ingredients, while the cooking habits of domestic consumers are generally based on high oil, frying, frying, and high temperature. Therefore, non-stick pans of the same quality have a longer life in Europe and the United States, while they have a shorter life in China.
A number of studies on non-stick polymer coatings have shown that it may release trace amounts of perfluorinated compounds at high temperatures, but it is unlikely to be released during cooking. For example, boiling with brine and water for 2 hours, or heating to 280 degrees with soybean oil, respectively, did not reveal the typical decomposition of perfluorinated compounds.
Generally speaking, non-stick pans without PFOA and PFOS are harmless to human body. With the increase of the number of uses of non-stick coatings, less and less perfluorinated compounds will be released. As long as the appliances with non-stick coatings avoid high-temperature dry burning, the safety is guaranteed. The health risk of perfluorinated compounds is not large for the time being, so we can feel a little at ease.
Shenzhen dankai technology co.,ltd (ShenZhen dankai Technology co.,ltd), whose predecessor was dongguan dandi insulation material co.,ltd. fluorine plastic material factory established in 1998, is an intelligent manufacturing enterprise specializing in the research and development, production, sales and service of FEP, PFA, PTFE and other fluorine plastic tube rod sheet membrane products and other insulation materials. The company has international standards of senior R & D team and the introduction of foreign fluorine plastic products production line. Some fluoroplastic products through ISO9001, SGS, FDA certification, Huawei, Foxconn, the United States, ZTE, Intel, AirTAC and other domestic and foreign cooperation customers fully affirmed. The company's main products are: ① pipes: Ptfe PTFE pipes, Fep pipes, Pfa pipes, Pvdf pipes; ② Heat shrinkable tubes: Ptfe heat shrinkable tubes, Fep heat shrinkable tubes, Pfa heat shrinkable tubes, Pvdf heat shrinkable tubes; ③ Plate and rod films: Ptfe plate and rod films, Feep plate and rod films, PE ⑤, Pvdf plate and rod films, etc, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight, gasket, joint, cone rod, flared tube, sealing tube, braided tube, corrugated tube, etc. At the same time can be customized according to customer requirements processing production of various specifications of fluorine plastic products.
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