1, [eye observation] Not exactly the same amber, even a piece of rough stone, there are certain chromatic aberrations and nuances on the texture. All, when buying bracelets, be sure to pay attention to those colors that are too uniform. This string of fake color processing is a bit too much. This string of fake color processing is a bit too much 2, [bubble brine] Although the natural amber texture is very light, it will sink to the bottom when you put the Russian specialty (amber without any metal inlays) into the water. If you add dissolved brine, when the concentration of the salt is greater than 1 to 4 (1 part salt, 4 parts water), the amber will float and the fake amber will not float. 3, [listen to the sound] Amber-free amber is gently rubbed in the hand, giving a soft, slightly dull sound. If the plastic or resin is amber, the sound is crisper. 4, [smell smell] The biggest feature of the Baltic amber is the friction. Large pieces of amber, especially amber rough, can be smelled of natural loose scent immediately after rapid rubbing; small pieces of amber also produce a subtle scent after rubbing. After the ignited amber, the pine scent will be more intense, but Xiao Bian can not take his own baby to try, you will listen to it... After the Baltic amber friction heating, there is a clear pine scent. The Baltic amber friction has a pronounced pine scent after heating. 5, [triboelectric power] After the natural amber rubs, it not only emits a loose scent, but also generates static electricity, which is enough to absorb the shredded paper. 6, [lighting] This is the trick to identify amber. True amber will produce a fluorescent color when illuminated by a purple light, and plastic amber will not change color. The texture, color depth, transparency, and refractive index of true amber will change with the observation angle and illumination. This feeling is not found in any other substance. This is like the fact that we recognize true and false people. Although superb artists can create vivid figures of wax figures, "to confuse the truth" is just a boastful, no matter how good the wax figure can not escape our eyes. True amber is transparent and moist, not as transparent as glass, crystal or diamond. False amber is either very transparent or opaque, the color is turbid and unnatural, and it is dead and fake. After a long time of contact with amber, it is natural to distinguish the authenticity. True amber will produce fluorescent color under the illumination of purple light. Amber will produce fluorescent color under the illumination of purple light. 7, [ether experiment] Amber powder is pressed at high temperature to regenerate amber, and its appearance and properties are close to natural amber. Salt water floats, floodlights, friction and fragrance are also available. It is extremely difficult for ordinary people to identify. However, if a little ether is applied, after a few minutes, the amber will become sticky and will feel dissolved. In this way, I have shown it to the guests many times and put it in ether for about 20-30 minutes. 8, [acid alkaline] The true pure natural amber is quite resistant to the normal daily acidity and alkalinity, because many of the amber produced in the Baltic Sea are salvaged from the sea. They have been in the sea for hundreds of millions of years. We may not see the alkali. 9, [hardness test] When you gently slant the back of the amber with a needle, you will feel a slight violent sensation and very fine powder. If it is a plastic or other substance with different hardness, it is either stuck or sticky. In addition, amber powder remains in the perforations of the beads of the new amber, and the plastic texture of the fakes will not remain in the powder. 10. [Authorization Certificate] Buying Russian high-end Baltic amber, regular stores must be accompanied by an identification certificate. Don't look at the Russian version of the certificate of authentication to highlight the noble identity of this piece of amber! Tips: In the above method of identifying amber, there is a link that causes damage to amber itself. Please be careful to avoid damage to your property. Types and identification methods of fabric materials for bedding kits Bedding Set,Bedding Sheet Set,Embroidery Sheet,Quilt Covers Shaanxi Xiaoze Textile Co., Ltd. , https://www.xtsxxzth.com
1. Yarn-dyed pure cotton is easy to shrink. Yarn-dyed pure cotton is a kind of pure cotton fabric, which is woven with warp and weft yarns of different colors. Due to the first dyeing and then weaving, the dye penetration is strong, the color fastness is good, and the different-colored yarn fabrics have a strong three-dimensional sense and unique style, and the bedding is mostly represented by a striped pattern. It has the characteristics of pure cotton fabric, but usually shrinks more.
2. The price of polyester and cotton is affordable. Polyester-cotton brand products generally use polyester-cotton fabrics with a ratio of 65% polyester and 35% cotton. Polyester-cotton is divided into two types: plain weave and twill. The plain weave polyester-cotton fabric has a thin surface, good strength and wear resistance, and has a very small shrinkage rate. In addition, because polyester is not easy to dye, polyester-cotton fabrics are mostly light and light tones, which are more suitable for use in spring and summer. Twill polyester cotton is usually denser than plain weave, so it appears dense and thick, and the surface gloss and hand feel are better than plain weave.
3. Pure cotton is very soft, feels good in hand, is comfortable to use, easy to dye, has a rich variety of patterns, is soft and warm, has strong hygroscopicity and is washable, and has less static electricity. It is a widely used material for chuang tops; , Easy to shrink, poor elasticity, acid and alkali resistance, not suitable for long-term treatment at high temperature above 100 degrees Celsius, so it is best to spray wet cotton products when ironing, easy to iron. If possible, iron the product with a steam iron after each use, and the effect will be better.
4. Jacquard pure cotton is thicker. High-count and high-density jacquard pure cotton fabric has a particularly large warp and weft density and rich weaving changes. Therefore, the fabric feels thick and durable, and has a high surface finish. It is a more advanced type of pure cotton fabric.
5. The silk is the smoothest. The appearance of silk is gorgeous and rich, with natural soft light and flickering effect. It feels comfortable, has high strength, and has better elasticity and moisture absorption than cotton. However, the upper four-piece set made of silk is easy to get dirty. Heat resistance to strong sunlight is worse than cotton. The cross-section of the fiber is a unique triangle, and the reflection of light changes after local moisture absorption, which is easy to form water stains and difficult to eliminate, so silk fabrics should be whitened when ironing.