Knowledge Release: Silk Is Tested &Nbsp; Real Silk Difficult To Burn When Disinfectant Melts.

Silk is 70% fake in the market. So how to identify real silk? In October 17th, the reporter made the solubility test and flammability experiment of silk and kapok. Real silk It will soon be dissolved in 84 disinfectant, but there is no obvious change in kapok.

A experiment silk is disinfected with disinfectant water, and its flammability is poor.

1. solubility test

A contrast experiment was conducted between kapok and silk in Xinbao laboratory. The reporter removed two glassware from the laboratory, and placed 84 of the disinfectant in each dish. Then two cups were placed in kapok and silk respectively.

Then the reporter stirred with a small stick, and a minute later, the fluffy silk began to melt quickly, but there was no change in kapok. After three minutes, the silk in the cup dissolved almost. 5 minutes later, the kapok had no change in the cup except liquid size, and the silk dissolved only a few thick lines. More than ten minutes later, the silk and even the thick lines were gone, and the light yellow liquid became darker.

The reporter tore off a cocoon for the above experiments, and found that it was more quickly dissolved than silk and the liquid became dark yellow. According to Ms. Liu, a small celebrity shop owner in Yanan road three, this is because cocoon texture is more dense than silk, so it dissolves faster.

Two Flammability Experiment

Subsequently, the reporter used silk, kapok and chemical fibers as materials to conduct combustion experiments. First of all, kapok, the reporter just lit a corner with a lighter. The whole kapok was burning quickly, but fortunately, it was avoided in time, or it was burned. The burning of kapok produces smoke. The smell is not very pungent. The remaining black dust is easily crushed.

The second is chemical fibers, which burn slowly, squeak and black soot. Reporters smell the pungent plastic, and the black objects after burning are hard enough to be powdered.

Finally, silk, the reporter tore the silk into strips, ignited from the lower end, lit the lighter and moved slowly to the side, and slowly burning silk slowly extinguished. The smoke from the silk is slightly white and tastes almost the same as that of the hair. The remaining black ash is crushed and crushed.

B experts say natural animal protein meets disinfectant. Dissolution

The reporter told the City Quality Supervision Bureau with consumer identity, a staff member told reporters: "the main ingredient of the natural silk is animal protein, 84 disinfectant contains hypochloric acid, protein meets the rapid degeneration of hypochloric acid, silkworm silk into the disinfectant, silkworm silk will definitely dissolve quickly." The ingredients of kapok and chemical fibers are not proteins, so they can not be dissolved in the 84 disinfectant.

"Silk is originally extracted from cocoons, which is a part of animal body. Because the main ingredient is protein, it burns like the charred smell of animal hair. It's not very pleasant. But those kapok fibers and chemical fibers are different from silk, and two kinds of fibers will continue to burn. The staff explained.

The reporter understands, 84 disinfectant and combustion are the common way to test silk in daily life. In addition to the two methods, judging from bulkiness, static response and color can also be judged.

Compared with cheap silk in supermarkets, many consumers believe that hand-made silk is relatively reliable. Yanan three road a silk quilt shop owner told reporters, "our old customers are many, hand-made low price and more reassuring." She said that the price of catty mulberry silk was about two hundred yuan, and that of tussah silk was more than 100, plus spanportation and manual fees.

During the interview, some people who have been doing silk business all the year round told reporters that buying silk is an important reference. "Generally speaking, raw materials, quilts, labor costs, freight and so on add up, silk should be more than 100 yuan in a Jin, a good two hundred, lower than this price should not be true." He also reminded that nominal handwork can be adulterated, and the public may wish to know more about silk identification methods so as not to be deceived.