The Weifang Tainuo chemical industry Limited company is located in “the world kite” - - Weifang, south near the rubber Jinan railroad, north depends on 309 federal highways, the blue silver highway, the geographical position is superior, the traffic conditions are convenient. in 2006 sets up with joint forces by the original Shandong four stars in the bowl of the big dipper specialized team, is domestic devotes to the development green environmental protection safety product for the mission specialty company.
Tainuo Chemical always focus on chemicals and keep researching and supplying chemicals for our customers .Now we will supply you with new series chemical: Oxalic Acid
Since the partially alcoholized PVA contains more acetate groups, and the volume of the acetate group is much larger than the hydroxyl group, there is a large steric hindrance, so that the partially alcoholized PVA cannot form a compact crystal structure. It can only form loose structures with large
The degree of alcoholysis has an effect on the water solubility, viscosity, adhesion and serosity of the slurry.1. Water solubility:PVA with fully alcoholysis is poor in water solubility,for example,PVA with Alcoholysis degree more than 99%(Mole fraction) begin to dissolve when it is heated above 9
Melamine formaldehyde molding compound is made of "melamine formaldehyde resin" as a base material, "Alpha" cellulose as a filler, and added with pigments and other additives. It has the characteristics of water resistance, high temperature resistance, non-toxicity, bright color and convenient moldi
Views:1 Author:艾彩霞 Publish Time: 2018-10-30 Origin:Site
In our country, there is a special standard requirement for melamine tableware manufacturing technology. It is stipulated that melamine powder (melamine formaldehyde resin) must be used as the base material and a cellulose as the base material. Melamine tableware made according to the national standard is highly resistant to high temperature, high humidity, solvent resistance and alkali resistance.
Characteristic:
1, excellent solvent resistance.
2. The surface of the products is smooth, non-toxic, tasteless, resistant to fall, and can automatically extinguish the arc.
3. Various styles, easy to clean, strong and fall-resistant, widely used in tableware, daily necessities and other aspects.
Melamine plastic tableware, also known as imitation porcelain tableware, is widely used in fast food industry and children's catering industry because of its lightweight, beautiful, low temperature resistance (can be put directly into the refrigerator), resistance to boiling (can be steamed, boiled), pollution resistance, not easy to break and other properties, deeply loved by consumers and children.
Because of the high price of melamine powder, some illegal traders directly use urea-formaldehyde molding powder as raw material to produce; some use urea-formaldehyde molding powder as raw material, and then coat the surface of tableware with melamine powder. Tableware made from urea formaldehyde is harmful to the human body.
When the consumer chooses to buy, must first go to the regular store, the supermarket to buy, must not greedy cheap, in the stall to buy; Secondly, when choosing to buy depends on whether the utensils have obvious deformation, color difference, surface is smooth, the bottom is uneven, Decal patterns are clear, whether wrinkled and bubble, color tableware with a sheet Whether the white napkin is rubbed back and forth is faded. 2. How to use melamine tableware correctly because of the special molecular structure of melamine plastics, melamine tableware is not suitable for use in microwave oven, if used, cracking will occur.