Photo caption: screenshot of the report of Guangzhou Municipal Consumers' Committee

Artificial stone wholesome clean provides standard is not unified, product raw material formula is diversiform, cause consumer misgivings. How to choose artificial stone sanitary ware? Recently, guangzhou Consumer Council and Foshan Consumer Council commissioned Foshan Quality Measurement Supervision and Testing Center to carry out a comparative test of artificial stone sanitary ware. The results showed that 7 out of 27 samples failed the test, mainly focusing on pollution resistance and/or heat resistance.

One quarter of the samples had problems with pollution and/or heat resistance

Artificial stone refers to the high polymer or cement or both mixtures as adhesive materials, with natural stone particles (powder) or natural quartz stone (sand, powder) or calcium carbonate or aluminum hydroxide powder as the main filler, adding pigments and other auxiliary agents, by mixing, condensation and curing process composite materials. According to the packing is different, can be divided into solid surface materials, artificial quartz and artificial marble, solid surface material with calcium carbonate or aluminum hydroxide for filler commonly, artificial quartz with natural quartz (sand, powder), silica sand, slag, etc as the main filler, artificial marble broken material, such as marble and limestone powder as the main filler, etc.

In recent years, artificial stone, as a new healthy and environmental protection material in line with the national sustainable development strategy, has developed by leaps and leaps. It is now widely used in home decoration sanitary ware places. Compared with traditional sanitary ware such as ceramics, Artificial Shi Weisheng sanitary ware with non-toxic environmental protection, good insulation, high toughness, short construction period, strong skid resistance, high radiation protection performance, high fire rating and the advantages of short production cycle, but as a result of such products do not have a unified standard, the product raw material formula and variety reasons, to the quality of the consumers of such products is not very understanding. In order to solve consumer doubts and guide consumers to choose correctly, guangzhou consumer Council and Foshan Consumer Council entrust Foshan Quality measurement Supervision and Testing Center to carry out the artificial stone sanitary ware comparative test.

It was found that 20 of the 27 samples passed all the tests, and the 7 samples that failed mainly focused on pollution resistance and/or heat resistance.

In terms of dirt resistance, quartz stone material and the solid surface material samples covered with gelcoat layer have excellent dirt resistance, while the solid surface material samples not covered with gelcoat layer have poor dirt resistance. In terms of physical damage resistance, the results show that the hardness of quartz stone samples is the highest and scratch-proof performance is guaranteed. In terms of heat resistance, the linear thermal expansion coefficient of samples of different materials varies greatly, and the anti-thermal expansion and cold contraction performance is different.

Sample price is affordable and "high"

It is reported, the comparison test sample by the consumer council in guangzhou and foshan consumer commission and foshan quality measurement supervision and inspection center staff as ordinary consumers, from electric business platform or random physical stores to buy, bought a total of 27 artificial Shi Weisheng ware samples, mainly involving solid surface sheets and quartz, two kinds of material, Including laundry cabinet (supporting artificial stone table), artificial stone basin, artificial stone table, bathroom cabinet (supporting artificial stone table) and other four types of samples, the purchase price from 500 yuan/piece to 3349 yuan/piece. The test set up dirty performance, physical damage resistance, heat resistance, texture performance of four categories of test items.

, according to the results of 27 samples, a total of 20 samples passed all tests of the project, the remaining 7 did not pass the test samples, respectively is entitled "platinum hutch defends" "Han Pin" "shu" bath "head" "monk" "philharmonic spring", "sell" samples, the problem mainly concentrated in the pollution resistance and/or the thermal performance test.

Of the 27 products, 21 samples have passed the pollution resistance test. According to the analysis, the material of the 21 samples that passed the dirty performance test was quartz stone material or solid surface material covered with gelcoat layer, and the material of the samples that failed was solid surface material without gelcoat layer. The wholesome clean of solid surface material is provided in the production process can cover a gelcoat layer in order to achieve the effect of anti-fouling and anti-scraping, but as a result of gelcoat raw material price is expensive, processing technology is more complex, a lot of manufacturers in actual production leave out this technology in order to save cost, causing the dirty performance of samples is poor.

In terms of physical damage resistance, the results show that the hardness of quartz stone sample is the highest and scratch resistance is guaranteed. The analysis shows that the barb hardness value of the top five samples, quartz stone samples have 4, artificial quartz stone because of its filler for natural quartz stone (sand, powder), silica sand and other raw materials with high hardness, so the hardness of artificial quartz stone is much higher than the solid surface material, so the scratch-proof performance is more guaranteed.

In terms of heat resistance, the linear thermal expansion coefficient of samples of different materials varies greatly, and the anti-thermal expansion and cold contraction performance is different. Artificial stone clean is provided especially the kitchen uses clean to provide a product, in the process of use, often with high temperature article direct contact, if burn hot pot, hot water to wait, because this product heat-resistant performance appears particularly important. The test results showed that 24 samples of the 27 products passed all the tests of heat resistance, and 3 samples failed in the linear expansion coefficient item.

Consumer tips

(1) Tips for purchase

1, quartz stone quality performance is excellent, but the price is higher.

Artificial quartz stone is hard, compact structure, with incomparable pollution resistance, wear resistance, pressure resistance, high temperature resistance, corrosion resistance and other characteristics of other decorative materials, mainly used for table, wall and ground. But because of the high cost of raw materials, high process requirements, so the price of artificial quartz stone is generally higher than artificial solid surface material.

2, gelcoat layer of solid surface material is more resistant to pollution, but the price is higher.

A large number of experimental data show that the artificial stone solid surface material covered with gelcoat has better stain resistance and less stain residue. However, due to the cost of gelcoat raw materials, processing technology is more complex, so the products covered with gelcoat layer than the products without gelcoat layer expensive.

3, careful observation, quick identification.

Carefully observe whether the color of the product is even, whether there are pores on the surface, touch the product surface whether there are obvious uneven feeling, scratch the product surface with nails whether there are obvious scratches. The artificial stone clean that uses low grade resin and calcium carbonate as raw material to make is provided product, the surface color is turbidified hair dark, the surface has plastic colloid feeling, the surface is not dense have stomata, this kind of product is easy to permeate color to absorb oil.

4. Look at the after-sales service quality of the production enterprises and sales units

After-sales service can solve the worries for consumers, when the product quality problems can not get timely and fast after-sales service, will bring consumers a lot of inconvenience. The key to after-sale service lies in whether it can be really cashed, or whether it is possible to cash. Consumers are advised to compare from several aspects: first, to see the strength of the enterprise, the first choice of well-known domestic brands; Second, look at the national after-sales network, after-sales network throughout the country is very important to consumers; Three is to see after-sale policy, such as whether to implement "three packages" and national unprofor.

5. Pay attention to the authoritative release of relevant market and quality supervision departments

Consumer should notice at ordinary times the commodity quality that authority branch releases in the near future supervises information, buy the model that sampling check did not discover disqualification or brand as far as possible, do not buy the commodity that sampling check disqualification. If the purchased product is found to be unqualified in the sampling inspection, it shall be handled according to the unqualified condition of the product. In case of slight disqualification of logo and instruction, it can continue to be used if it does not affect the use and safety protection performance. If belong to the more serious unqualified product quality problem such as mechanical physical performance or chemical performance, need to contact distributors or manufacturers, know whether the product that buys clearly is inside unqualified batch, whether belong to unqualified product. If yes, it should communicate with the business for a refund.

(2) Use tips

1. Use caution

(1) Avoid high temperature objects placed directly or for a long time on the surface of artificial stone sanitary ware. Hot POTS, kettles, or other high-temperature appliances taken directly from the stove or oven or microwave oven may cause damage to the artificial stone surface. Use a pot holder with rubber legs or place a heat shield on the counter.

(2) Do not cut vegetables on the surface of artificial stone sanitary ware. The blade can easily cause unsightly scratches on the surface of artificial stone. If inadvertently left a knife mark, according to the depth of the knife mark, the use of sandpaper lightly wipe the surface to remove the dent.

(3) Contaminants should be removed as soon as possible after dropping on the surface of the artificial stone sanitary ware, and the surface of the product should be kept clean as far as possible. Pollutants contact with artificial stone surface for a long time, easy to cause dirt residue, conventional cleaning method is difficult to remove. If there is a stain, use alcohol or detergent to scrub the surface.

2. Maintenance and maintenance

(1) Wipe the stain with detergent after each use, and then wipe it with a dry cloth.

(2) Wash with soap or ammonia containing detergent (such as dishwashing liquid).

(3) To remove knife marks, burns and scratches: if the product surface is matte, use 400-600 mesh sanding paper to polish until the knife marks disappear, and then use detergent and clean cloth to restore the original state; If the product surface gloss is high, first polish with 800-1200 mesh sand paper, then use polishing wax and wool polishing ring to polish with 1500-2000rpm low speed polishing machine, and then clean with clean cotton cloth. Small scratches can be moistened and lightly rubbed with a dry rag.

Guangzhou Daily full media text reporter Lin Lin correspondent Sui Xiaoxuan Guangzhou Daily full media editor Su Wan Qian