In the short term, it does not cause much harm to the human body. If you work in this environment for a long time (eg: screen printing machine operator) this should be possible, as silver paste and aluminum paste are heavy metals and mixers and printing will produce heavy metal ions in the air of your work space, which will enter the human body through respiration. In the long term, this will cause varying degrees of damage to your health, for example. such as infertility, skin diseases, etc., of course there is also the possibility of Alzheimer's disease as you mentioned;
In fact, as long as the measures of protection are well taken, there is no problem. during operation, close the printing machine door and the oven door to allow the volatilization to evaporate. Metal ions are removed by ventilation; cover the lid when stirring, and do not allownot the bottle containing the porridge in a place without shelter. ventilation at all times, so that the chemical components of the sludge can evaporate as little as possible into the environment around your work. Okay;
How much silver paste and aluminum paste are used for solar monocrystalline silicon. cells?
Silver Paste
Silver paste is a mechanical mixture of high purity (99.9%) metallic silver particles, adhesives, solvents and thick additives.
Note that these are “metallic silver particles” and not “mercury (mercury)”.
Mercury is a liquid metal, while metallic silver particles are solid and relatively less harmful.
However, please note that in addition to metallic silver particles, silver paste also requires the preparation of "adhesives, solvents and additives".
The “adhesive” is mainly made of resin,which itself is non-toxic, but the resin additives are slightly toxic.
The "solvents" generally use butyl anhydride acetate, diethylene glycol butyl ether acetate, diethylene glycol ether acetate, isophorone, etc. . These have some toxicity and have been certified by the state standard, professional consultation is required. .
“Helps” are antioxidants, stabilizers, etc., which are mildly toxic.
Generally speaking, silver paste is a chemical product. Needless to say, as long as it is a chemical, it is definitely toxic.
However, ordinary chemicals, if properly protected during production operations, are less harmful to the human body. But it is difficult to say whether labor protection in the factory is not standardized.
The solar photovoltaic industry is an industryvery polluting (please distinguish the difference between “solar energy”, green energy, and “photovoltaic industry”), therefore as it involves transformation and production of cells, contact with pollutants and substances Toxic are inevitable Less, especially for single crystal and polycrystalline refining and other work.
Necessary protection is therefore necessary.
What are the photovoltaic silver paste companies?
The weight percentage of each component is as follows:
Micron silver powder: 75 -89%; : 2-8%; organic support: 7-15%; additive: 0.08-0.3%.
Silver paste for the front surface of crystalline silicon solar cells according to claim 1, characterized in that the particles of the micron silver powder are 0.5 to 5 μm. Silver paste is mainly used to make positive and negative electrodes, positive electrodes et negatives, and the back silver consists of the positive and negative electrodes.pole. Aluminum paste is mainly used to make BSF, which can collect media, reflect light, passivate getters, etc.
Which companies produce photovoltaic silver paste? The details are as follows:
1. Dehao Runda Co., Ltd. : It is one of the leading suppliers of photovoltaic materials in China. Its silver paste photovoltaic products are mainly used in the production of solar cells. .
2. Qingyuan Co., Ltd. : It is an enterprise specializing in the research and development of new energy materials and photovoltaic energy conversion systems. Its photovoltaic silver paste products are one of the company's main products.