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How many ways do you know about sponge foaming in sponge factory
Release time:
2020-10-12 16:01
Sponge factory sponge foaming way you know several kinds of it:
① One-step foaming method. Methacrylate or polyester polyol and polyacrylate, water, metal catalyst, surface activator, foaming adhesive, other preservatives and other raw materials are added in one step, and polyurethane foaming is carried out after high-speed mixing and mixing.
③ Semi-prepolymer foaming method. It is to make a part of nitrile rubber and diisocyanate into prepolymer first, then add another part of white material and black history, metal catalyst, water, surface active agent and other preservatives, etc., and mix and carry out polyurethane foaming under high speed mixing. This kind of polyurethane foaming method has a certain similarity with the prepolymer foaming method.
Manual foaming method, it is a simple way to accurately weigh all raw materials.
This is the common four kinds of polyurethane foaming way, after polyurethane foaming solution can make sponge get stronger ductility and water absorption capacity, considering the requirements of many fields for sponge.
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How to identify natural sponge and artificial sponge?
Compared with artificial sponges, natural sponges do not have static electricity that hurts the human body, do not peel off and last long. The sponge that lives in the sea is the real sponge, and the artificial "sponge" just imitates the structure of the natural sponge. Natural sponges that live in seawater are mostly grayish yellow, brown or black lumps. Its body surface has many bulges, there are many small holes beside the bulge, and there is a large hole at the top of the bulge. Seawater flows in from small holes and out from large holes, and those tiny creatures enter the sponge with the water and become "self-contained" food. Therefore, although the sponge is called "the flowers and fruits of the sea", it looks like a plant, but it is actually an animal.
Buy a pack of large salt or coarse salt, put the coarse salt and dirty plush toys into a larger plastic bag, and then fasten the mouth of the bag tightly and shake it vigorously. You will surely find that the plush toys are clean. The crude salt removed became gray-black due to the adsorption of dirt. The principle is the use of salt that is sodium chloride adsorption of dirt. Soda powder can also be used instead of coarse salt, the same usage. This method is more suitable for large plush toys and plush toys that can not be washed with sound.
The main ingredient of the sponge?
Polyurethane soft foam rubber, polyurethane is one of the most common polymer materials in life, widely used in the production of various "sponge" products. Now there are three kinds of sponges on the market, 1: polyurethane type, burning to generate a large number of cyano-containing gases, these gases are very toxic and suffocating. 2: polyethylene type, combustion of carbon-containing gas, this kind of gas toxicity. 3: polystyrene type, this kind of foam burning decomposition of a small amount of styrene monomer, toxic, but not as toxic as polyurethane.
Sponge manufacturers analyze the performance of packaging sponge products into what
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What are the functions of the packaging sponge?
What is the function of packing sponge?
Sponge manufacturers take you to understand the main functions of sponge
What are the main functions of sponge manufacturers to take you to understand?
