The hottest thermoplastic heating produces toxic s

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Thermoplastic heating produces toxic suspended solids and poses health risks

recently, researchers at the University of Illinois and technology in the United States and the National Institute of Applied Sciences in Lyon, France, found that 3D printers using fused deposition molding (FDM) technology may pose health risks

their research, published in the Journal of atmospheric environment, pointed out that a large amount of toxic suspended substances will be produced when thermoplastic is heated and sprayed through the nozzle

at present, fdm3d printers sold on the market are not equipped with extraction ventilation devices or filters, so it is necessary to be careful when using them in indoor environments or unventilated places

researchers tested five identical printers at the 3D printer experience center in Chicago. Two use polylactic acid and three use ABS ink

experiments have proved that fdm3d printers have health risks

researchers admit that the scale of the experiment and the limited research time (nearly 2.5 hours) are not enough to draw absolute conclusions. However, the test found that the ultra-fine particles released by the five 3D printers are reasonable and the correct use of the fixture is conducive to the smooth progress of the experiment. The number of particles is amazing. If inhaled by the human body, it will pose a serious threat to human health

the report points out that in animal tests, the thermal decomposition substances of ABS have been proved to have toxic effects on rats and mice

researchers conducted three experiments, also known as tensile tests. In the first experiment, two printers were turned on and polylactic acid was used for low-temperature printing. The results showed that at least 20billion ultra-fine particles were released per minute. In the second experiment, two printers used polylactic acid and the other three used ABS. As a result, the number of ultrafine particles released per minute increased sharply. In the third experiment, three printers used ABS to print, and the release of ultrafine particles per minute was also surprising

the test results show that when only two printers with polylactic acid as raw material are turned on, the ultrafine particles in the air will increase three times. When five machines work at the same time, the ultrafine particles increase nearly 15 times. Ultrafine particles can be deposited in the lungs and directly absorbed into the blood. When the concentration is high, we can find an innovative cooperation mode that can continue to inspect and measure the reduction of oil volume, which can cause lung disease, blood and nervous system diseases, and even death

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