The harm of black heart cotton is very clear. When you buy bedding, you will pay special attention not to buy black cotton, but for the mattresses that everyone uses every day, few people pay attention to its safety. Those sponges that are soft in appearance and have different colors are likely to be toxic chemicals. It is understood that most of the main filling materials of mattresses currently in the market are mainly polyurethane (PU) sponges, and polyurethane sponges are chemical products. Mainly from the "polyol (ether)" + "TDI" + "foaming agent and other additives" and the addition of a variety of chemical agents reaction foam, which is a stimulating volatile gas, mainly extracted from petroleum, TDI is a highly toxic chemical. CFC foaming agent is an "Ozone Depleting Substance". Its production process is extremely environmentally friendly. During its use, it may release toxic, irritating and sensitizing chemicals. The structure is very gas impermeable and is prone to bacterial growth. Long-term use of this type of toxic sponge mattress can produce eye and upper respiratory tract irritation. If you often feel itchy eyes, spicy pain, tearing, blurred vision and conjunctival congestion, accompanied by dry throat, severe cough, chest tightness, difficulty breathing, and other symptoms of bronchitis, it is likely because of long-term Caused by the use of toxic sponges, severe cases may even have pulmonary edema. Attachment: the harm of sponge 1, TDI (toluene diisocyanate) Toluene diisocyanate (TDI): water white or light yellow liquid with strong pungent odor, accumulation and latent in the human body, strong irritant to skin, eyes and respiratory tract, inhalation of high concentration of toluene diisocyanate Vapour can cause bronchitis, bronchial pneumonia, and pulmonary edema; fluid contact with the skin can cause dermatitis. Contact with liquids can cause severe irritation and, if left untreated, can result in permanent damage. Long-term exposure to toluene diisocyanate can cause chronic bronchitis. Those who are allergic to p-toluene diisocyanate may cause asthma, asthma, difficulty breathing, and coughing. Process for the formation of TDI (toluene diisocyanate): Toluene diamine reacts with phosgene to form TDI. Phosgene is a combination of carbon monoxide and chlorine, all of which are toxic gases. During the First World War, phosgene and chlorine were used as military gas. TDI not only affects our health, but also the hereditary nature of its toxicity affects our women's breastfeeding, and indirectly affects our next generation! TDI can be affected by contact between the respiratory tract (including the mouth and nose) and skin contact, with obvious stimulation and sensitization. It has a stimulating effect on the eyes, respiratory mucosa and skin, and causes bronchial asthma. The human olfactory threshold is 0.35-0.92 mg/m^3, and another report is 3 mg/m^3. 3~3.6 mg/m^3, it is irritating to the mucosa; at 27.8 mg/m^3, the eye and respiratory tract are severe. stimulate. 16mg/m^3, after 3 to 4 weeks of work, many people developed acute upper respiratory tract inflammation; 0.5mg/m^3, working for one week, severe cough and difficulty breathing. TDI causes bronchial asthma, which may be caused by the binding of the isocyanic group to the amino group of the protein in the body, resulting in an antigen-induced allergic reaction; it may also have pharmacological mechanisms and stimulating effects. The stimulation of 2,6-TDI is greater than that of 2,4-TDI. It can produce eye and upper respiratory tract irritation. Eyes have itching, spicy pain, tearing, blurred vision and conjunctival congestion, such as keratitis or keratoconjunctivitis; dry throat, severe cough, chest tightness, difficulty breathing, asthmatic bronchitis and other symptoms . In severe cases, pulmonary edema can occur. Rat oral LD50: 4130 mg/kg; LCLo: 600 ppm/6H. Mice oral LD50: 1950 mg/kg; LC50: 9700 ppb/4H. Rabbit percutaneous LD50: >10 mL/kg. The definition of polyurethane PU refers to a compound in which an NCO functional group in an isocyanate chemical reacts with an OH group of a polyol (ether). So no matter what kind of isocyanate (MDI or HMDI) you use, it is only the change in the degree of toxicity, without changing the nature of its toxicity. In summary: the toxic micro-TDI gas is dissipated by the sponge, and the threat of absorption through the skin always exists. 2. Chemical additives such as antioxidants, anti-aging agents, anti-yellowing agents, fluorescent whitening agents, etc.: Most chemical additives are chemical products, and many benzene-containing chemicals have proven to be carcinogenic. Therefore, many chemical additives are harmful to health, especially fluorescent whitening agents. Fluorescent whitening agents are a kind of Fluorescent dyes, or white dyes, are also complex organic compounds. Its characteristic is that it can excite the incident light to produce fluorescence, so that the dyed substance can obtain the effect of sparkling like fluorite, so that the substance seen by the naked eye is very white and achieves whitening effect. In recent years, it has been found that fluorescent whitening agents are carcinogenic and have great harm to human health. Therefore, in many industries, the use of fluorescent whitening agents to make food packaging wrappers and napkins is prohibited. 3, foaming aids, CFC-11, etc.: CFC-11 (commonly known as Freon or refrigerant) foaming agent widely used in the sponge industry contains two Cl in the molecule? Is the free radical Cl of chlorine decomposed by high-energy ultraviolet radiation in the atmosphere? , Cl? Not only will the ozone layer be consumed, but it can be regenerated, so a Cl? Can consume thousands of ozone molecules. Therefore, CFC-11 (commonly known as Freon or refrigerant) foaming agent will destroy the ozone layer that protects the earth, causing the temperature of the earth to rise, coupled with the greenhouse effect caused by CO2. (The synthesis process of PU sponge will also release a large amount of CO2, carbon dioxide. ), exacerbating temperature changes; scientists believe that the expansion of the earth's crust has caused frequent earthquakes, and even climate anomalies everywhere are related to the above reasons. China officially joined the Montreal Protocol on Substances that Deplete the Ozone Layer on June 14, 1991, and received financial and technical support from the Montreal Multilateral Fund. China's responsibility is to follow the Protocol ODS (Ozone Depleting Substance). Ozone-depleting substances) The progress and timetable for the phase-out target, and the phase-out work will be completed as scheduled. For the PU sponge industry, it is scheduled to completely ban the use of CFC-based chemicals in 2010; despite the efforts and research and development of “water-based foaming agents†and others, the same “price-performance†alternatives have not been found. 4. Black (petroleum) pollution: With the expansion of the industry scale, huge amounts of polyurethane materials are consumed each year. Currently, most of the polyurethane materials are petroleum downstream products, which consume a large amount of petroleum resources every year. As we all know, black oil is a strategic resource, not renewable, but from exploration → mining → storage and transportation → cracking → deep processing, but no energy consumption, resulting in a greater amount of CO2 emissions, greatly increasing the total amount of CO2 in the atmosphere. The contrasting background is that China's oil recoverable reserves are only 2.3 billion tons. At the current rate, the recoverable period is only 14 years. --Shocking! 5, white pollution: polyurethane foaming process and scrapped a large amount of waste polyurethane foam, due to the toxicity of polyurethane foam combustion, and natural decomposition takes more than 100 years, garbage disposal is very problematic, most of the abandoned foam eventually formed a "white pollution ". As the scale of the industry expands, this problem is also increasingly apparent. Copyright, reproduced, please indicate the source of the article: GO Jiaju Suzhou Home Network (http://sz.gojiaju.com) offenders will be held liable Uhp 500 Graphite Electrode,Venezuela Graphite Electrodes,Korea Graphite Electrode,Kazakhstan Graphite Electrodes Carbographite Industrial PTE.LTD , https://www.graphites.pl