Due to the deterioration of the natural environment, dust, industrial waste gas, acid rain, etc. are very likely to pollute the stone, and some of the stone itself is poor in material, and then the stone water spots are not dry, white, yellow, rust and other stubborn diseases. How to control the variation of stone has become one of the top considerations for architects, construction companies and owners.
The development of nanotechnology involves many aspects of our daily lives, and the protection of stone is only one of them.
Here, we make a simple analysis of the protective effect of nanotechnology on stone surfaces:
1. The stone surface protection agent adopting nanotechnology has good waterproof and antifouling effect: after the stone surface is treated, the protective agent penetrates into the micropores of the stone to form a strong and lasting protective layer, and the polymer skeleton group is firmly combined with the stone. The group on the side chain of the polymer skeleton forms a hydrophobic and oleophobic layer on the outer layer. The protective agent added with nano material forms a protective layer on the surface of the stone. When the liquid is in contact with the surface of the stone, the surface of the stone becomes smaller, the stone is not wetted by the liquid, and the liquid is prevented from penetrating into the interior of the stone through the capillary hole, thereby solving the problem. Various pathological problems of stone.
2, the use of nanotechnology stone surface protection agent has excellent weather resistance. Nano surface stone surface protection agent has a matrix material as an excellent organic polymer material, with remarkable molecular structure stability, excellent weather resistance, hydrolysis resistance, It has good chemical resistance medium and good solvent resistance. Stone protectant has excellent weather resistance and can protect stone for a long time.
3. Nano-technical stone surface protection agent has extremely strong permeability. The nano-particles are extremely small, with low viscosity and good fluidity. They have strong permeability and can penetrate into the micro-voids inside the stone to a depth of 1~2 cm. It is possible to maintain the stability of the protective properties for a long time.
4. The stone surface protection agent adopting nanotechnology has extremely strong wear resistance. The nano particles are extremely small, can penetrate into the interior of the stone, form a whole with the stone, and not only form a film on the surface of the stone, so it has very good resistance. The grinding performance can even play a protective role after the stone is worn away by 1 cm.
5, the use of nanotechnology stone surface protectant has transparency: nanomaterials form a film on the surface of the stone, covering the entire surface of the stone, due to the presence of nanoparticles, fill the pores caused by stone defects, and this layer of surface film does not affect the stone The normal breathing of the substrate, the film itself is colorless and transparent, which can ensure the brilliance and moisturization of the stone, and will not have any influence on the appearance of the stone.
Feed additive is a small amount or a small amount of material added in the process of feed production, processing and use. Feed additive is a Raw Material for modern feed industry must use for strengthening basic feed nutritional value, improve animal production performance, guarantee the animal health, save feed costs, improve quality of animal products and other aspects have obvious effect.
Feed Additives are divided into Microbial Feed Additives and Chinese Herbal Feed Additives. Among them, the microbial feed additive is a kind of microbial product that replaces or balances one or more bacterial strains in the animal ecosystem. In a narrow sense, it is a kind of microbial product that can stimulate the growth of beneficial bacteria and resist the growth of harmful bacteria. Microbial feed Additives containing a large amount of beneficial bacteria (active lactobacillus, bifidobacterium, bacillus), compound enzyme, chelating peptide, mildew remover, etc., as the inside of livestock and poultry feed, can rapid reproduction, on the one hand, into the bacterial metabolites and gut endotoxin inhibits the growth of other harmful flora, on the other hand, it formed the normal microbial flora in the host, synthesis of main vitamin for host, provide nutrition and prevent the invasion of pathogenic bacteria.
Feed Additives
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