Nature Flooring Del Floor Formaldehyde Decoration Home Improvement Home Improvement Home Improvement Home 1. Improve the flowability of pouring refractory, reduce water consumption, make it easy to shape, and greatly improve the production efficiency; 2. Due to the intercalation effect of its ultrastructure, the compactness and strength of refractories are greatly improved; 3. Silica fume has high activity, and under the premise of the presence of Al2O3 components, it is easier to generate Mullite phase, which makes the high-temperature strength and thermal shock of refractory material significantly improved. 96% Undensified Microsilica, 96% Undensified Silica ash, 96% Undensified silica powder Chengdu Rongjian Engineering Materials Co.Ltd , https://www.rjsilicafume.com
Laminate flooring is a product with high technological content. From the aspect of appearance, it is not easy to distinguish between quality and quality, unless it is quality tested. Well-known brands are generally tested through market operations and have established a good image in the minds of consumers. Well-known brands not only have test reports produced by China's quality inspection authorities, but also marked on the product's packaging boxes with complete identification; registered trademarks, manufacturers, business units, models, numbers, addresses, and telephones. Here is a reminder: Do not try to buy "three no" laminate flooring, be careful to be deceived. Well-known brands not only ensure quality but also responsible for laying, but more importantly, after-sales service is guaranteed. Buying a worry, but also eliminating the worries.
two. Select wear rotation:
The reason why the laminate flooring is strengthened is that its surface has a wear-resistant layer, and its initial wear resistance value is divided into three levels: high, medium and low. The imported reinforced floor is divided into three levels for public places and two levels for private homes. The wear resistance of the surface layer can be selected as required, and its wear resistance mainly depends on the content of Al2O3 corundum abrasive. Generally 6,000 rpm ~ 18000 rpm, which corresponds to the content of AL2O3 between 38g/m3 ~ 64g/m3. The higher the number of revolutions, the better the durability, but the higher the price. Therefore, according to each consumer's economic strength and use environment, choose the appropriate wear-resistant rotation. Products that are usually over 6,000 rpm are suitable for use in the home, but public places must be above 9,000 rpm.
three. Select substrate density:
Laminate flooring currently has two types of substrates: one is a high-density fiberboard with a density of 0.82g/m3 to 0.94g/m3; the other is a particle board with a special shape. The index is the physical index of the product. The larger the index, the better the mechanical properties and impact resistance of the product. However, under the same conditions, there is also a problem that the water absorption thickness expansion ratio is large and the dimensional stability is poor. Therefore, it should be noted that when buying, the bigger the better.
four. Select water resistance:
The water resistance performance is reflected by the index of water absorption thickness expansion. The higher the index value, the worse the water resistance performance. The poor water resistance performance means that in the wet environment, if the seal is not tight around the four sides of the floor, it may cause more obvious expansion, resulting in dimensional change, size change is too large, may cause the floor to arch, affect the floor life. Choose less than 2% for the best.
Fives. Select free formaldehyde emission:
Laminated flooring production contains a certain amount of formaldehyde, if the number of indicators exceeds the national regulations, and the seal around the floor is not strict, the release of formaldehyde will be harmful to the human body. Therefore, the state has imposed mandatory standards for the concentration of formaldehyde in the air of public places. The regulations do not exceed 0.12 mg/m3. For the laminate flooring itself, the “perforation extraction method†is not more than 40 mg/100 g in the national standards. . Best at 9mg/100g.
six. Select surface bonding strength:
The surface adhesive strength reflects the quality of the glue between the surface decoration of the laminate flooring and the substrate. If the quality of the glue is poor, the product will peel off after being used for a period of time.
Seven. Select internal bond strength:
Internal bonding strength is the key to reflect the quality of bonding between the fibers inside the substrate, and the lower strength will cause product delamination.
Eight. Selecting the flexural strength and elastic modulus:
These two indicators are important indicators that reflect the mechanical strength of the product and reflect the ability of the product to resist bending damage.
nine. Select surface scratch resistance:
This indicator is also an important indicator of laminate flooring, which reflects the product's ability to resist sharp hard objects.
ten. Select resistant to cigarette burning:
This indicator reflects the flame retardancy of the product. Normally, no cracks, cracks, and blisters appear on the laminate floor when burned with cigarettes.
eleven. Select the surface impact resistance:
This indicator adopts the falling ball test to observe whether there is any depression on the surface of the specimen after the heavy ball falls. Usually, there is no obvious depression in the laminate flooring.
Xi'an decoration classroom Chen Gong provides
Clearly buy laminate flooring
one. Preferred famous brand:
Silica fume has been used to improve refractory materials for more than 40 years. Silica fume used in refractory materials will have the following characteristics: