How to choose health and safety tiles

Tiles play an important role in home decoration. In the decoration of kitchens and bathrooms, ceramic tiles are absolutely irreplaceable materials. Inferior wood flooring will contain harmful substances such as formaldehyde, and tiles will also have radioactive substances, not "absolutely healthy and safe." The price of ceramic tiles is very different. Owners who do not understand the standard of ceramic tiles are easily lost in low prices, which in turn makes the home a gathering place for harmful radioactive materials.

Tile purchase

Buy tiles to distinguish "A, B, C"

The standard for most tile-buying owners to choose ceramic tiles is: brand, color style, price, anti-fouling ability, and rarely ask about the radioactivity of the tile. If the owners do not take the initiative to ask the radiation problem, shopping guide will not take the initiative to introduce standard radiation area.

Ms. Wu, a salesman of a ceramic tile brand in Guangdong, told reporters that brand tiles will train the shopping guide on the radioactive knowledge of ceramic tiles, including the prevention measures of their own products. In addition, all the tiles in the brand store should have the quality provided by the manufacturer. Test report, all of which indicate the use of various types of tiles.

According to the newly revised "Code for Indoor Environmental Pollution Control of Civil Building Engineering", the radioactivity of indoor decorative tiles should be detected and controlled, and the test results are divided into three categories: A, B and C. Only Class A standard tiles can be used for home interior decoration.

The reporter carefully observed the appearance of the three types of tiles, A, B, and C. It is difficult to see the difference. According to industry insiders, the prices of the three types of ceramic tiles A, B and C on the market vary greatly, ranging from 2 yuan to more than 10 yuan per piece. The larger the tile area, the larger the price difference. Consumers who do not understand the market are likely to buy B and C types of tiles that are not suitable for interior decoration because of price factors.

In addition, the owner asked the decoration team to work in the construction of the materials. For the quality of the craft ceramics and architectural ceramics used in the interior, the owner could not understand, and opened the door for the B and C tiles to enter the room. “In the unlikely event that these tiles are unqualified, the people living inside may be accompanied by radioactive materials for a long time.”

Due to fierce market competition, at present, in Zhengzhou's home improvement market, some informal decoration companies and small guerrillas have adopted low-price strategies and made suggestions on decoration materials. They use Class B and C tiles to pretend to be Class A tiles for interior decoration. This can save costs by 20% to 40%. “So, our designers often remind owners that renovation cannot be used as a primary measure.”

Source of tile radiation

Many owners believe that ceramic tiles do not require adhesives such as glue, like wooden flooring, and there should be no indoor pollution.

In fact, in the production process of ceramic tiles, in order to increase the surface finish, to facilitate cleaning and decontamination, and to avoid erosion, the manufacturer applied a layer of "glaze" on the surface (so the tile is also called glazed tile), which is a ceramic color. Zircon sand is added as an opacifier, and the content of natural radionuclides in zircon sand is generally high.

The radiation path of ceramic tiles to the human body is from the radiation of raw materials, the second is the irradiation of the elements from the (æ°¡) elements, and the glaze dust that has fallen off the service life or the man-made damaged tiles, which is inhaled by the human body, will endanger the health. . Among all the tiles, the ultra-white bricks in the polished tiles have stronger radiation, and the precipitation rate of the radioactive elements (æ°¡) on the surface of the glazed tiles is higher than that of ordinary bricks.

Pay attention to the following points when purchasing ceramic tiles: buy brand products from the formal building materials market; ask the dealers for radioactive test reports, and observe the types of test results (A best, B center, C worst); to prevent indoor radioactive materials The content is too high, it is best to ask a professional agency for radioactivity testing before check-in.

Tile Buying Tips

According to industry experts, good quality ceramic tiles generally pay more attention to safety. Radiation will also be controlled within the scope of the state. When buying ceramic tiles, you can identify the tiles by one test, two ratios, three looks, and four listens.

Test weight: The quality of the tile is relatively heavy. Specific specifications: good quality tiles are uniform in size and thickness.

1. inspection tags: should name and address, product name, telephone service, size, quantity, trademarks, production date and implementation of standards on the product box for porcelain tiles, check to CCC certification mark, interior decoration For ceramic tiles, products with radionuclides that meet Class A requirements should be selected.

2. Look at the appearance: the quality of the tile glaze should be smooth and delicate, the gloss glaze is bright and shiny, and the matt glaze is soft and comfortable. Under sufficient natural light or fluorescent lighting, the bricks should be placed vertically at a distance of 1 m and no obvious glazed defects should be visible. The pattern of the pattern of bricks should be delicate and realistic, without obvious defects such as lack of color, broken lines and misalignment. The shading and trademark of the back of the high quality ceramic products are clear and complete, with little glaze or defects.

3. Stitching effect: Good ceramic tile size deviation is small, put a batch of products vertically on a plane to see if there is any jagged phenomenon. Looking at the level of flatness, the edges of the two bricks can be pressed together to see if there are any gaps. Good product deformation is small, and the brick surface is flat and beautiful after paving. Look at the color difference of the product, put a few pieces of brick together and carefully look at the light, the products with different shades between the products, the overall effect is poor after the paving.

4. Tap to listen: Gently tap the tile and listen to its sound. The better quality product sounds crisp and sweet. Poor quality products are due to improper formulation of raw materials, short firing cycle, low firing temperature, and an “empty” sound when struck.

5. The weight of the tile: the weight of the tile, in general, the same size of the tile, the weight of the water absorption is low, the internal quality is also good.

6.Comparative varieties: Floor tiles are divided into glazed floor tiles and unglazed floor tiles according to the glazed condition. Glazed floor tiles are mainly used for floor decoration of bathrooms and kitchens, and are used together with interior wall tiles. Most of the floor tiles are polished to a polished surface. Most polished tiles have a water absorption of less than 0.1%, also known as vitrified tiles. The polished surface of the polished brick is a high-grade ceramic product.

7. Paving effect: When paving tiles, many consumers and workers have encountered difficulties in aligning the corners, which means that the flatness of the tiles may not be too close. When selecting tiles, randomly select a few pieces. were looked at with the eyes along tile edges and diagonal, if found to have "Alice" phenomenon, it shows the flatness of the tiles is not enough, if not, explain the basic tile flatness pass, it would be a buy tips tiles.

Product name         Aluminium phosphate

CAS No              7784-30-7

EC No                232-056-9

Chemical formula      AlPO4

Appearance           White Powder

Storage               Keep the product in a tightly closed container ,Isolate form any source of heat or ignition and moisture

Guarantee period       2 years in the case of sealed.

Packing unit           25kg Poly Propylene bag & 500kg Poly Propylene bag,

Any size customers want.

Application            Mostly used as binder and curing agent in the production of Hi-Temp Refractory Materials for kiln. as fluxing agent in the production of special glass, as binder in fabrication of ceramics or tooth, and as catalyst in   organic synthesis.

Goods characteristics   White Powder.

Soluble in acid or alkali solution ,insoluble in water or alcohol.

CHEMICAL ANALYSIS

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Aluminum Phosphate Series

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