Harm of 1. pentabenzetrialdehyde

Plastics (PP, PE, PC, ABS, PVC, etc.) as an important basic material, due to the excellent performance, low cost, simple processing process, can be described as "ubiquitous", to people's production and life to bring a lot of convenience. At the same time, due to the defects of the material itself, it will produce a certain amount of volatile organic compounds (VOCs). When it reaches a certain concentration, it will not only smell bad, but also cause people to have certain uncomfortable symptoms, such as affecting the skin, breathing and nervous system. disease. In food grade plastics, medical grade plastics, leather and other fields, the problem of five benzene three aldehyde is very prominent. In the automotive field, a large number of leather, plastics, shock panels, sound insulation cotton, and adhesives used for bonding various materials are used in the manufacturing process of vehicles, which also brings TVOC (total volatile gas emissions) Gas emissions, which is what we often call "new car smell". This contains benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde and acrolein, collectively referred to as "five benzene three aldehyde". When TVOC gas emissions exceed the reasonable range, its toxicity, irritation, carcinogenicity and special odor will affect the skin and mucous membranes. People sitting inside in a short period of time will feel headache, nausea, vomiting, weak limbs, and severe convulsions, coma, and memory loss. Long-term inhalation of TVOC can damage the liver, kidneys, brain and nervous system, and may even cause cancer. For mothers and babies, children, pregnant women and other passengers, the impact of TVOC on them is more serious and far-reaching, in their exposure to food grade plastics and medical grade plastics, the need to reduce the sporadic TVOC.

At normal temperature, the TVOC peak volatilization period in plastic and leather in a closed environment can be maintained for 3-15 years. When the ambient temperature gradually rises, the TVOC gas emission will be further accelerated. The traditional approach is to use the baking process to distribute TVOC in advance in the production process. The disadvantage of this process is that the production process is not friendly, it will still cause occupational hazards to the company's production staff, and it can not really completely eliminate the adverse effects of TVOC.

The principle and advantage of 2. molecular sieve odor

Molecular sieve is a kind of aluminosilicate material with regular multi-stage pore structure and pore channels of various sizes. The rich and diverse framework topology of molecular sieve determines that molecular sieve has changeable pore structure (size, dimension and connectivity) and unique cage structure. The common pore size of molecular sieve is distributed between 0.35 and 0.9 nm, which basically corresponds to the molecular size of VOCs, while the cage structure provides adsorption space for VOCs molecules, it has a high adsorption capacity. Therefore, for the capture of specific VOCs, molecular sieve adsorbents with pore size matching with their kinetic diameter can be selected to weaken the influence of molecular diffusion and Knudsen diffusion effect, improve the adsorption rate in the pores, enhance the effective adsorption of VOCs molecules in the pores/cages, and improve the adsorption capacity of molecular sieve adsorbents for VOCs molecules.

3.Advantages of national porcelain molecular sieve

Different types of molecular sieves have different adsorption effects on VOCs, which requires physical and chemical modification and compounding of molecular sieves to improve the removal effect of VOCs. The national porcelain technology team has developed the TMA series nano-scale AX-type composite molecular sieve in combination with the plastic and leather production process, which can not only effectively remove trace water from the plastic system to reduce the viscosity of the system, but also throughThe multi-stage pore structure can effectively adsorb VOCs molecules of various diameters; on the other hand, the adsorption material has good dispersion and good compatibility with plastic particles. The addition of the national porcelain TMA series products will effectively absorb and remove the "plastic" smell in plastic and leather, and reduce the harmful effects of use.

Guoci has a "taste evaluation laboratory", which can carry out application-level development according to different product uses.

Molecular Sieve for Deodorization of Leather and Plastic