What is the difference between foam and sponge? The difference between cotton and cotton

The difference is still very big, the characteristics of EVA foam: water resistance: closed cell structure, non-absorbent, moisture-proof, good water resistance.

Corrosion resistance: resistant to seawater, grease, acid, alkali and other chemicals, antibacterial, non-toxic, tasteless, non-polluting. Processability:

There are no joints, and it is easy to perform hot pressing, cutting, gluing, laminating, etc. Anti-vibration: high resilience and tension resistance, high toughness, good shockproof and cushioning performance.

Heat preservation: heat insulation, excellent heat insulation, cold protection and low temperature performance, can withstand severe cold and exposure. Sound insulation:

Closed bubble holes, good sound insulation effect. Sponge with EVA foam.

Difference: PVA sponge: Polyvinyl formaldehyde is a condensate of polyvinyl alcohol and formaldehyde, which is a white or yellowish amorphous solid.

Its softening point is higher than that of its congeners (140 150), its strength, rigidity and hardness are larger, and it has good bonding properties. It is good in terms of oil resistance and electrical insulation; It has good water resistance, alkali resistance and acid resistance. It is flammable, emits black smoke, melts and drips, and has a peculiar smell. Foam:

High density, stronger liquid absorption, foam is tougher and more elastic, good wear resistance, will not scratch the wiped device, will not fall off. After particles and liquids enter the foam pores, they will not fall out or be easily extruded, and have good locking ability. Foam is a porous elastomer obtained by cross-linking of a specific water-soluble resin, which has a strong ability to absorb water due to its hydrophilicity in the molecular structure.

Unlike ordinary methyl methane sponges, PVA foam has extremely high hydrophilicity, and produces a capillary phenomenon with criss-crossed micropores, exerting excellent water absorption and water retention performance.

Ordinary sponges do almost nothing, they act as a barrier to independent springs, the bottom second layer (green) is foam, and the thinnest is a highly resilient sponge. The independent spring sofa is better than the sponge sofa, but there are two points to be raised: the independent spring sofa process requirements are higher, because after a long time, the spring is easy to eject, so the sponge layer must be relatively thick.

If the filling layer is not thick enough, after sitting on the independent spring sofa for a long time, people are easy to feel fatigued, forcing people to constantly change their sitting posture, this is because the spring rebound is strong, and it will form considerable pressure after a long time. High-quality fabric sofas, mainly shaped sponge and high-elastic sponge; The thickness of the high-elastic sponge of the cushion part generally reaches 40, and the thickness of the cushion is 38; The mid-range ones will be slightly thinner, but they can also reach 38,35. <>

The nature is different, the etymology is different. Cotton pinyin, mián phonetic one

There are 8 strokes on the radical wood part and 12 strokes in total.

Basic literal meaning. Cotton mián (a).

An annual herbaceous plant with peach-like fruit and white fibers and black-brown seeds. The fibres are used for textiles and wadding. The seeds can be pressed for oil and are used for food and industry (commonly known as "cotton").

Jacket. Quilt. Cotton cloth.

Cotton spinning. Cotton boll. Cotton.

Cotton. Batting.

The difference between cold foam sponge and ordinary sponge:

Cold sponge, also known as cold foam sponge, is a new technology for the production of sponges. Generally, sponge foaming needs to be carried out at high temperature, which increases the chemical reaction between molecules, which is not conducive to contact, and the birth of cold sponge completely eliminates such harm.

Ordinary sponge is our common light yellow sponge, can be seen in various places, seats, office sofas, tablecloths, mattresses, etc., can be said to be the lowest threshold for use, very soft, elastic general, if you use it to make an office chair, then ** must be very cheap, if you do not pursue health and comfort, you can still choose.

What is Rubber and Plastic Cotton? Is it foam?

What is Rubber and Plastic Cotton? Is it foam? Polyethylene.

Rubber and plastic cotton is a kind of polyethylene high foaming product, and it is also a new and widely used soundproof, waterproof, sound-absorbing material. Products with low density, low heat retention coefficient, good flexibility, anti-corrosion, anti-aging, thermal insulation, sound absorption, and shockproof performance are widely used in various fields. Rubber and plastic cotton has good sound insulation and thermal insulation performance, and has a subtle independent closed-cell structure.

It can play the role of sound insulation, waterproofing and heat preservation. It is widely used in building buildings, hotels, shopping malls, hotels, hospitals, schools, building walls, air conditioners, vehicles, KTV, ships, electrical, chemical, pharmaceutical and other fields. It is suitable for almost any building that needs to be insulated, heat-absorbed, and shockproof.

Rubber and plastic cotton is a kind of polyethylene high foaming material, which belongs to organic compound materials. The rubber and plastic cotton adopts precise micro-foaming technology, which greatly improves the bubble cell closure rate and lowers the thermal conductivity of the product; The bubble pores are also more uniform and fine, with strong resistance to water vapor penetration, and prolong the service life Rubber socks are closed foam structure, and it is difficult for water in the outside air to penetrate into the material, with excellent resistance to water vapor penetration, and the appearance of the cold insulation layer does not need to add a vapor insulation oak layer.

The difference between cotton and cotton: different references and different emphasisFirst, the reference is different.

1. Cotton: annual or perennial herbaceous plants or shrubs, cultivated varieties include upland cotton, island cotton, tree cotton, grass cotton, etc.

2. Cotton: a piece or mass formed by silkworm bedrock silk.

Second, the focus is different.

1. Cotton: Willing. From wood, from silk. Botanical name.

2. Mian: Willing. From silk, from 糸 (mì). Original meaning: silk cotton, fine silk cotton, Xinshi Fengbei silk cotton.

Strokes: <>

1. Cotton sweater mián máo shān].

A cotton knitted top, mostly used for underwear.

2. Annihilation of cotton yarn mián shā

Yarn spun from cotton.

3. Polyester cotton dí mián].

A blend of polyester and cotton.

1, silk cotton sīmián].

The product obtained by using the following cocoon as raw material, refining and loosening it. Silk cotton is easy and soft, with good warmth, and can be used for clothes, quilts, etc.

2. Mian silk mián chóu].

The silk fabric woven after spun into silk with broken silk and waste silk as raw materials has an uneven and smooth surface.

3, Mianzi mián zi] silk cotton.

Foam generally refers to foam cotton, which is a material containing pores, and usually the products on the market, such as foam plastic, pearl cotton, foamed rubber, water-swelling water-stopping glue, polysulfide sealant, etc., all belong to foam products. Foam has long been used as a new type of environmentally friendly plastic foaming material, with good cushioning, seismic resistance, heat insulation, moisture-proof, chemical corrosion resistance and other advantages, and is non-toxic and non-absorbent. It is designed to be processed and formed, and its shockproof performance is better than that of traditional foaming materials such as polystyrene (foam), and meets the requirements of environmental protection, making it the best choice for export products.

Extended information: introduction to the characteristics of foam 1, thermal insulation characteristics because the foam material contains a large amount of air or other gases, and is not suitable for circulation, especially the closed-cell foaming material of the sedan car, with completely separated independent bubble holes, the material can significantly slow down the conduction of heat, with a very low thermal conductivity, more combined with the softness of the material itself, and good resilience, can be used as an ideal thermal insulation material for automobiles, ships, home appliances and fitness equipment, air conditioning pipes and so on. 2. The cushioning high elasticity rubber itself is known for its high elasticity, and it still maintains a very high resilience after the rubber is processed into foaming materials, which is very suitable for use as a cushioning high-elastic and shockproof field.

3. The flame resistance has strong flame retardancy, and after these materials are processed and foamed, they can be used in fields with high fire protection requirements due to their superior flame retardant properties.

Foam, also known as seersucker, is a kind of fabric made of polyester, and more popularly, foam is actually a fabric with chemical fiber as the main component.

If you get the real thing and look at it, you should understand that foam is a flat cloth after being pressed, the surface of the fabric forms a uniform distribution of bubbles, these small bubbles are evenly distributed on the fabric, not only looks peculiar, but also because of these bubbles in use, the air circulation is better, and it is not easy to stick to the human body to destroy the epidermis. So, it is more comfortable when it comes to practical use.

The reason why foam and cotton are ready to have a relationship is that now people's environmental awareness has been strengthened, and pure cotton products are easier to accept, but real pure cotton products are often a four-piece set of chemical fiber components. Therefore, in order to meet the needs of consumers, merchants have launched products such as foam, which are not only cheaper, but also feel closer to pure cotton when used.

Based on the points mentioned above, we can understand that foam is a kind of fabric with polyester composition after foaming treatment.

Foam is used more in the sealing industryBoding Plastics, foam customization.