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Do you know how to distinguish high density sponge
Release time:
2020-11-23 16:31
Do you know how to distinguish between high density sponge:
High density sponge (High-densityfoam) is a sponge with a net weight of 45KG per cubic sponge. Now sponge processing technology has long been improved, simple to net weight to distinguish the relative density of sponge has not been available. Today, the processing technology of sponge, the relative density is high, the net weight is much lighter than the previous production and processing of sponge. High-density sponges are not simple to resolve relative density by net weight.
Main uses of high density sponge:
Generally speaking, the strength of high-density sponge is also high relative to high-density sponge, but if some high-density sponge is not removed, a light and soft modifier will be added to make sponge light and soft, which is used to make sound-absorbing cotton, sofa cushion and hard package raw materials. Molar mass formula, low density sponge used to do general maintenance of raw materials. The same relative density of sponge hard and soft level is not the same.
Generally, the relative density of sponge for sofa cushions is about 35, with soft, hard, light and soft specifications. Do the mattress is generally 22 up and down. To put it bluntly, the high-density sponge is a common professional term for sales staff to introduce products in detail. High-density sponges are generally not used to absorb moisture.
The main use of high density sponge
With digestion and absorption of external forces, delicate touch, soft, comfortable characteristics, in the car, furniture, health care, small toys and other fields, can consider a variety of market needs
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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.
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