Common knowledge of coating: environmental protection standard language and index of wall paint surface

The core tip is: environmental protection index 1: volatile organic compounds (VOC) content At present, the compulsory standard is implemented in our country, that is, VOC ≤ 120g / L There are three types of VOC effects on human body: odor and sensory effects, mucosal irritation and other systemic toxicity Some VOCs have been shown to be carcinogens or suspected carcinogens Environmental protection index 2: formaldehyde content Now the compulsory standard value is ≤ 100mg / kg Formaldehyde itself is highly toxic and has a strong coagulation effect on protein, Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: environmental protection index 1: volatile organic compounds (VOC) content At present, the compulsory standard is implemented in our country, that is, VOC ≤ 120g / L There are three types of VOC effects on human body: odor and sensory effects, mucosal irritation and other systemic toxicity Some VOCs have been shown to be carcinogens or suspected carcinogens Environmental protection index 2: formaldehyde content Now the compulsory standard value is ≤ 100mg / kg Formaldehyde itself is highly toxic and has a strong coagulation effect on protein It can combine with amino and hydroxyl groups of nucleic acid to denature it It can block the action of stomach enzyme and pancreatin, thus affecting metabolism Its steam has carcinogenic effect on rodents Environmental protection index 3: heavy metal content Heavy metals mainly refer to soluble lead, cadmium, chromium, mercury and other substances Some heavy metals are essential trace elements for human body in a certain concentration However, when the amount of heavy metals entering human body exceeds the limit that human body can tolerate, it can cause serious physiological damage and lead to a variety of diseases Lead poisoning is more serious for children, and children have special susceptibility to lead Us code of federal regulations cfr1303 stipulates that lead content greater than 60mg / kg is lead paint, which is forbidden to be used in public places or interior decoration Performance index 1: scrub resistant times The frequency of scrubbing mainly depends on the content and quality of the emulsion The main raw material also determines the main properties of latex paint, such as scrubbing times, weather resistance and color retention Good wall paint products are basically more than 5000 times of scrub resistance, for ultra white products in the market, we should pay more attention to the comparison of scrub resistance times Performance index 2: mould proof and antibacterial performance or ultra white performance, or some waterproof functions Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,