Where does the slogan "non-toxic, harmless and inedible" come from?

Paint was once called a "health killer". The benzene-containing gas released by a newly painted house can make people

dizzy, and even make people unconscious and convulsed. Non-toxic health care paint is a high-tech achievement developed by a famous ecologist in China, a recipient of State Council allowance and a doctoral supervisor of Central South Forestry College for more than 1 years, and passed the provincial appraisal in May last year.

Yang Jieshi, a national outstanding township entrepreneur and chairman of Songju Fine Chemical Technology Co., Ltd. in Miluo City, Hunan Province, introduced this technology last year and invested 26 million yuan to develop and produce a series of coating materials for Songju non-toxic health care paint. This series of coatings has been appraised by Guangzhou Testing Center of the Ministry of Science and Technology and Hunan Science and Technology Department for many times, and it is recognized as: "Non-toxic technology is the first in China, and its health care function has reached the international leading level." On May 28th, it passed the "two highs" (high-tech enterprises and high-tech products) certification of Hunan Science and Technology Department.

According to reports, Songju nontoxic health care paint is nontoxic because its main raw materials are 85% from natural plants

, and all additives are all extracted from green organisms, which is praised as "the essence of natural plants and the paint of returning to nature" by people in the industry. Its health care function is mainly that the compound gas volatilized after brushing is not only fragrant and odorless, but also has anti-inflammatory, sedative and expectorant effects on human body, which is confirmed by experts to have health care effect on patients with upper respiratory diseases.

The research and development of environment-friendly nontoxic paint by retired engineers turned out to be mixed with water.

In order to make nontoxic and harmless paint enter ordinary people's homes quickly, Liu Tianshi, a 71-year-old engineer, spent three years researching this kind of environment-friendly paint, and the viscosity can be adjusted freely with tap water without using "natural water". When sprayed on objects,

it can also protect objects from water damage, and the water resistance is 3 times higher. The advantages of this coating developed by new technology have been well received by the expert group of scientific and technological achievements appraisal organized by Guangdong Science and Technology Department, and it has been evaluated as a provincial-level scientific and technological achievement recently.

The death of a colleague inspires the "nerd" to create motivation

Liu Tianshi, a 71-year-old engineer, has been doing paint research in the research room since he graduated from the Department of Chemistry of Sun Yat-sen University in 1958, burying himself in various bottles and academic books all day. But one day in 198, the quiet life of the man called "bookworm" was broken by the death of his companion. Colleagues who were also engaged in paint research fell ill and died because of long-term contact with paint. "That colleague is very young, and he has a wife and children at home. It is because of the toxic smell of paint that a good family is ruined."

It is reported that oily paint should be mixed with toxic organic solvents with strong smell, such as "Tinea Water" and "Boiling Oil Water", and rusty iron parts should be rusted or phosphatized in advance when paint is used, resulting in serious secondary pollution, and a large number of benzene substances in waste gas and wastewater will also destroy human immune function and lead to leukemia. Liu Tianshi hopes to have a non-toxic and harmless paint that will not harm people's health. With this in mind, Liu Tianshi, a bookworm, walked into the ranks of non-toxic and harmless waterborne coatings, and this road has gone for more than 2 years.

The process is cheap, the raw materials are simple, and the equipment has been immersed in the laboratory for 3 years

Liu Tianshi began to consult a large number of materials at home and abroad, and found that there were many methods for manufacturing water-based coatings abroad in the past, but these products were either too long in production cycle, too complicated in technology, low in conversion efficiency, or too high in cost. Liu Tianshi saw that the market of water-based coatings has considerable space, but to popularize and apply this kind of non-toxic and harmless coatings, it is necessary to make further improvements in performance, cost and use, and it is much more advantageous than oily paints to win a bigger market.

In order to reduce the cost of raw materials, Liu Tianshi came to Danzao, determined to invent newer technology to reduce the high cost of raw materials.

The idea of starting with the cheapest raw materials became the center of Liu Tianshi's three-year experimental work in Danzao. In order to save costs, Liu Tianshi, who never goes to the market to buy things, always takes empty bottles, large and small, to various shops for a month, looking for materials in his mind. Every time he comes back, he brings a basket of bottles and cans, and others mistakenly think that he is buying seasonings for his family.

"Some engineers asked me what materials to use for the experiment. When I told them, they all felt crazy. How could they use such a simple material for the experiment!"

identification is 3 times higher than the national standard, and the cost is lower

The process has been worked out, but the results can not be achieved at once, and the problems must be repeatedly tested. What materials should be improved for insufficient adhesion? What adjustments should be made when stratification occurs? After three years' practice, Liu Tianshi finally succeeded in researching water-based modified polyester rust-proof paint with water-based resin. This kind of paint is very convenient to use. The viscosity of the paint can be adjusted by tap water. If it is coated on rusty iron parts, it can be used immediately without rust or phosphating.

At the appraisal meeting, Professor Lu Zejian, the head of the appraisal team and the School of Chemical Engineering of Sun Yat-sen University, said that it is an environmentally-friendly coating, which has no pungent smell and is decomposed with water, thus eliminating the existence of toxic and harmful substances during use. Originally, the general oily paints in the market were better than those in water-based paints, but the indexes of the new water-based paints developed by Liu Tianshi fully met the requirements of hardness, adhesion and stability of oily paints, and some indexes even far exceeded, for example, the water resistance was improved by 3 times compared with the national standard, and the salt water resistance was improved by 1 times, which can be used as automobile coatings, marine coatings and other metal coatings.

Experts believe that this kind of paint has a great space for promotion, so it is suggested to put it into production on a large scale, so that environmental protection paint can become the mainstream of the paint market as soon as possible. Foshan Science and Technology Bureau said that coating is a conventional industry, and the injection of innovative elements can promote and develop the industry. The new process coating invented this time is a good innovative project with good development space.