Performance Analysis of Antibacterial and Wear-resistant Solid Wood Composite Flooring

1 Antibacterial and antifungal

1, 1 Materials and methods
Take 18 samples of antibacterial wear-resistant solid wood composite floor and ordinary solid wood composite floor control board without antibacterial treatment, the specification is 5cm*5cm. Staphylococcus aureus (ATCC 6538) and Escherichia coli (8099) were inoculated on the surface of the two samples for antibacterial test, and Aspergillus niger (MS3.867) was inoculated for mold inhibition test.

Since there is no national standard or international standard for measuring the antibacterial property of the floor, the antibacterial property measurement adopts the antibacterial standard of non-absorbent antibacterial products, such as plastics and ceramics, that is, according to; JIS Z2801: 2000, the antibacterial processed product G of the Ministry of Industry of Japan The antibacterial test method and the antibacterial effect were measured, and the antibacterial activity value on the surface of the sample was measured by the film adhesion method; the antifungal measurement was measured by the plate culture method according to the American ASTM G21-96 synthetic polymer material resistance test standard. The test results are shown in Tables 1 and 2.


Table 1 Antibacterial test against Staphylococcus aureus and Escherichia coli

Test strain sample logarithmic value of bacteria obtained by inoculation “0” time Logarithm of bacteria obtained after inoculation for 24 h Antibacterial logarithm
Staphylococcus aureus (ATCC6538)
Anti-wearing solid wood composite floor control parquet 0
<1.30
>5.86

4.45
7.16

E. coli (8099)
Antibacterial wear-resistant solid wood composite floor control parquet 0
<1.30
>5.67

4.63
6.97

Table 2 anti-mildew test

Test strain sample culture time / day bacterial growth level description

Aspergillus niger (MS3.867)

Antibacterial wear-resistant solid wood composite floor control parquet 28
Grade 0 (no black mold on the sample to be tested)

28
Level 1 (less than 10% black mold covered on the sample)



It can be seen from Table 1 and Table 2 that the antibacterial value of the tested floor product reaches Japan; the standard requirement of JIS Z2801:2000>2, the anti-fungal performance reaches the standard level of “0” in ASTM G21-96. The main reason for the antibacterial wear-resistant solid wood composite flooring products is the addition of nano inorganic silver antibacterial materials and nano photocatalytic titanium dioxide (TiO2) to the surface material. Compared with organic fungicides, nano-TiO2 photocatalysts have long-lasting antibacterial properties. This is because nano-TiO2 can utilize natural photocatalytic degradation of organic compound contaminants, resulting in non-toxic, odorless CO2, H2O and some simple inorganic compounds. Nanomaterials exhibit high photocatalytic properties due to their large specific surface area, high surface activity sites and high photocatalytic activity. At present, some researchers have applied nano-TiO2 to the research of organic wastewater and organic pollutants in the atmosphere. It has been found that nano-TiO2 can treat halogenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons, organic acids, phenols, nitroaromatics, and substituted Benzene and other harmful pollutants such as formaldehyde and acetone in the air. This shows that the nano-TiO2 photocatalyst is applied in different fields, not only can play an antibacterial role, but also can play a role in purifying the environment. The nano inorganic silver antibacterial material has strong killing ability for almost all kinds of bacteria (bacteria, fungi, yeast, mold, etc.), and also has the properties of water resistance, acid and alkali resistance, washing resistance and aging resistance. Due to the presence of various harmful bacteria in the air, such as Staphylococcus aureus, Escherichia coli and Aspergillus niger, in most cases the mycelium and spores of these harmful bacteria are attached to the dusty ground of the house, and people frequently interact with the ground. Contact, inevitably infected with these harmful bacteria, seriously affects people's health. Antibacterial floor is the physiological function of destroying most pathogenic bacteria from the ground, so that it can quickly lose its activity, thus achieving antibacterial and anti-fungal effects. At the same time, the product can also properly decompose the stain on the floor to achieve long-term health and safety. the goal of.


2 Physical and mechanical properties of antibacterial flooring
It can be seen from Table 3 that the main physical and mechanical properties of the antibacterial treated floor fully comply with the requirements of the national standard GB/T 18103-2000; its surface wear resistance is superior to ordinary solid wood flooring and solid wood composite flooring, because the nano material has wear resistance. Loss and reduce friction properties. In addition, the surface of the substrate of this product is coated with Al2O3 surface paper wear-resistant material, showing good wear resistance. The product has the same advantages as the precious solid wood floor, with a pleasing natural pattern, warm winter and cool summer, noble and elegant, comfortable foot, etc., and the construction is convenient and fast, no need for the dragon skeleton, and easy to maintain in use, no need to wax, Easy to clean. In addition, its formaldehyde emission is lower than similar products, and it is a low-toxic environmentally friendly product.

3 Conclusion

The new antibacterial wear-resistant solid wood composite floor inherits the beautiful natural texture, texture and elasticity of the precious tree species solid wood floor, and has the dimensional stability and deformation resistance comparable to the solid wood composite floor, antibacterial and wear resistant, and Affordable and many other advantages. Whether it is from market demand and saving precious natural thin wood resources, or from product performance and surface decoration, it meets the requirements of market demand and resource conservation and ecological balance. As a new type of technology product with high added value, there is currently little sales in the market. The required equipment can be run on the basis of the original composite floor production line and the laminate flooring production line without the need to invest in new equipment. With the enhancement of people's health and environmental awareness, the demand for functional environmentally friendly materials is becoming more and more urgent. The antibacterial and wear-resistant parquet market will have strong market competitiveness and broad market prospects.


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