Cellulose sponge is a common cleaning tool that has a wide range of uses, is simple to make, and has strong environmental protection. use Cellulose sponges are widely used in household cleaning, personal care and industrial production. Its main uses include but are not limited to: Household Cleaning: Cellulose sponges are an important tool for household cleaning and can be used to clean various surfaces such as kitchens, bathrooms, floors, etc. Its absorbency and durability make it ideal for cleaning cooktops, scrubbing stains and wiping down furniture. Personal care: Cellulose sponges are also commonly used in personal care such as face washing, bathing and applying makeup. Its soft texture is gentle on the skin, not easy to irritate the skin, and is suitable for use on all skin types. Industrial applications: In the industrial field, cellulose sponges are used as filter materials, oil-absorbing materials, buffer materials, etc. Their porous structure gives them good adsorption and filtration properties. Craftsmanship The production process of cellulose sponge mainly includes the following steps: Raw material preparation: The main raw material of cellulose sponge is cellulose, which is usually made of natural materials such as wood fiber or bamboo fiber. These raw materials are crushed and bleached to remove impurities and improve purity. Mixing and forming: Mix the treated cellulose with an appropriate amount of water and binding agent to form a mixture of sponge materials. It is then shaped into a sponge by calendering or extrusion. Curing and shaping: The sponge mixture is placed in a mold and undergoes a curing and shaping process of high temperature and pressure. This step gives the sponge material the desired shape and strength. Cutting and trimming: The cured sponge block is cut and trimmed into sponge products of the appropriate size and shape. Packaging and quality inspection: Finally, the finished sponge is packaged and quality inspected to ensure that the product meets relevant standards and requirements. Environmental advantages Cellulose sponge has many environmentally friendly advantages, mainly reflected in the following aspects: Natural and renewable: The main raw material of cellulose sponge comes from natural plant fibers, such as wood and bamboo, which is a renewable resource. Cellulose sponges have a lower environmental impact than synthetic materials. Biodegradability: Since its main component is cellulose, cellulose sponge can be degraded by microorganisms in the natural environment and will not cause environmental pollution or waste of resources. Recyclable: Cellulose sponges can be recycled and reused after their service life, reducing resource consumption and waste generation. Its materials can be used for biomass energy production or other recycling pathways. Replace plastic: Cellulose sponges can replace disposable plastic cleaning utensils and reduce the negative impact of plastic waste on the environment. It is particularly important for the marine ecological environment.Face Washing and Makeup Removing Bath Degradable Cellulose SpongeCellulose Sponges are safe for washing dishes. Cellulose Sponge than the general sponge cleaning cloth 7 times more water-absorbing capacity, water storage capacity is the bar, wash dishes brush pot, oil absorption does not hang, not easy to deform does not hurt hands, the key is also to save detergent, it is very convenient to use, wood pulp cotton water absorption capacity is strong, decontamination does not hurt tableware sisal side wear and durability.

The typical characteristic of slow rebound sponges is that when external forces are applied and withdrawn, the deformation process and recovery trajectory are not nearly instantaneous and synchronous response as common sponges. In particular, when reducing, it starts from the outer edge of the stress core point, gradually recovers from the outside, and finally recovers from the stress core point. According to this characteristic of slow rebound sponge, many cushioning products, cushion materials and crafts have been developed. This property of the slow rebound sponge can evenly distribute the pressure exerted on it by irregularly shaped objects, hence the name zero pressure sponge. At the same time, the weak rebound force can maintain the external objects pressed on the sponge to form the geometric shape, which is also the nickname of memory sponge. Formation mechanism of slow rebound sponge As we all know, sponge is made of polyether polyols and isocyanate as the main material, and add the necessary additives. Under normal circumstances, the use of relatively large molecular weight polyether polyols (such as molecular weight 3000 and above 3000) and polymer polyols (molecular weight 60000 and above 6000) and isocyanate reaction, the preparation is a fast rebound sponge, known as ordinary sponge in the industry. In the preparation of slow recovery sponges, high molecular weight polyether polyols/polymer polyols are al always used in combination with low molecular weight polyether polyols (such as molecular weight 700 and 550). In general, we mix polyethers with molecular weight 3000 or above and polyethers with molecular weight 550 or 700 and react with isocyanate to prepare slow recovery sponges. After the reaction of polyether with isocyanate, chain segments of different molecular weight will be formed. The substance produced by the reaction of high molecular weight polyether with isocyanate is called soft segment, and the substance produced by the reaction of low molecular weight polyether with isocyanate is called hard segment. These segments are held together by chemical and physical bonds, which both intertwine, pile up, and cause slight phase separation due to steric effects. As we all know, high molecular weight polyether has low hydroxyl value and low crosslinking density in reaction with isocyanate, so the soft segment has large intramolecular and intermolecular activity space, easy deformation and recovery, that is to say, the soft segment activity is high. However, low molecular weight polyether has high hydroxyl value, high crosslinking density with isocyanate reaction, small intramolecular and intermolecular activity space, and difficult deformation and recovery, that is, low hard segment activity. The above properties of the soft and hard segments, combined with the slight phase separation within the polymer, cause the slow rebound sponge to show asynchronous deformation and recovery of the soft and hard segments during the process of applying and withdrawing external forces. The reason is that soft section deformation and recovery speed is fast, hard section deformation and recovery speed is slow. This is how a slow rebound sponge is formed.

Polyurethane rigid foam with isocyanate and polyether as the main raw materials, under the action of foaming agent, catalyst, flame retardant and other additives, through special equipment mixed, through high pressure spraying site foaming polymer. There are two kinds of polyurethane foam: soft foam and hard foam. The instructions for the use of polyurethane foam, do not understand the hurry to see. a) Remove dirt and grease from the construction surface, and wet the parts to be filled with a little water. b) Use in the temperature range of 5℃-40℃, if construction in cold season, it is recommended to preheat the tank in an environment of 30℃. c) Shake vigorously for more than 1 minute before use. d) Remove the cover, screw on the special construction gun, invert the tank, slowly press the gun handle, the discharge can be normal construction. The tank is in an inverted state during construction. e) After construction, use cleaning agent to remove the residue on the nozzle and valve to avoid solidification and blockage. f) Surface drying in 20-30 minutes, forming an elastic filling structure within 24 hours. g) The molding filler can be cut, polished and sprayed, this product is not UV resistant, it is recommended to further paint.

Clear formation mechanism of slow rebound sponge, can be based on customer needs, design a reasonable formula. For example, the customer requires the sponge rebound speed to be fast, appropriate to reduce the amount of slow rebound polyether, increase the amount of ordinary polyether; The customer requires that the sponge hardness should be high. It can be satisfied by increasing the amount of slow rebound polyether, replacing part of ordinary polyether with white oil, and improving the TDI index. The problem that slow rebound sponge is easy to obturator can also be solved according to the formation mechanism of slow rebound sponge. Generally, the higher the sponge density, the easier to obturator; The higher the TDI index, the easier it is to obturate foramen. In the production of high-density slow rebound sponges, polyether with molecular weight of 550 and hydroxyl value of 306 is ly used. At this time, the crosslinking density increases, chain segment winding and packing are tight, the degree of phase separation is light, and hard segment is the dominant factor, to high obturator rate. Similarly, at a high TDI index, the cross-linking density increases, the hard segment becomes more concentrated, and the obturator tendency increases. The problem can be solved by increasing the amount of opening agent.