PVA absorbent sponge, Shenzhen PVA absorbent sponge processing manufacturers

PVA sponge nature: PVF is polyvinyl alcohol and formaldehyde condensates, white or slightly yellow amorphous solid. A softening point higher than the acetal homologs thereof (140 ~ 150 ℃), strength, rigidity and hardness are larger and have good adhesive properties; in oil resistance, electrical insulation and other aspects are good; good water resistance , alkali resistance, acid resistance. Flammable, black smoke. Dripping and special smell. PVA sponge Application: Medical / commercial grade macroporous / PVA sponge pores: micropores medical grade polyvinyl alcohol sponge is an excellent liquid absorbing performance, when in contact with the surface of the human body is extremely soft completely natural degradation of polymer materials. Its excellent performance aspiration not only in the fast absorbency rate, but also in its super absorbency. Under normal circumstances, one gram of PAV class sponge can absorb the equivalent of more than seven times its own weight in body fluids. Thus these materials used to replace cotton and gauze in modern surgery, has been widely used international clinical surgery. Excellent medical grade polyvinyl macroporous sponge aspiration performance, high aperture ratio, high strength, when in contact with the surface of the body is very soft, especially in clinical trauma surgery suction drainage fields are widely used. Abandoned macroporous sponge is completely natural degradation, will not cause pollution to the environment. Under normal circumstances, one gram not add accessories PAV macroporous sponge can absorb the equivalent of more than nine times its own weight in body fluids. Such materials used to replace cotton and gauze in surgery, clinical surgery required to resolve cotton or gauze constantly changing problems. Medical polyvinyl alcohol sponge made of polyvinyl alcohol molecular chain obtained by curing through crosslinking agent, without filaments or fibers first, there will be no use of fiber shedding phenomenon. In eye surgery, ENT surgery, neurosurgery and thoracic surgery craniotomy heart surgery procedure, it does not fall off because the fibers have an impact on wound healing. Depending on the clinical use, if the load the appropriate accessories in the sponge, but also to promote wound healing. At the same time kind of sponge has good mechanical properties, it can be processed into various shapes depending on the surgery. Especially for use in micro-surgery in spear-shaped sucking sponge or sponge stick, it can quickly fine net absorption and bleeding, to ensure correct operation. Edit this paragraph polyvinyl alcohol (PVA) sponge main method made physical foaming, chemical foaming hair and physical and chemical foaming method of combining the three methods. But the production process domestic PVA sponge material behind the use of the method of starch filled with foam. That is at the right temperature first starch filled PVA solution, and at a certain temperature and then the PVA crosslinking the starch wash. When using this method of producing severe environmental pollution, the subsequent processing steps long, the starch can not be completely cleaned and starch with an acid catalyst can not be completely recycled, it is not conducive to saving resources and cut costs. Domestic polyvinyl alcohol sponge production technology Services currently provided Beijing Brooklyn Naqi new materials production technology is the leading domestic. Not all of its output technology behind starch filling method using the technology embodied in: u new technology does not add starch, simply add 0.8% to 3% of production aid, under certain conditions, cross-linked foam can. Starch eliminating the use of links, eliminating the starch cleaning segment; u new technology to shorten the production cycle, energy efficient use of various production processes. u New technologies can improve the physical properties of the product, wet resilience, tensile strength, compression modulus, water absorption rate, and so on have been greatly improved. u New technologies can be recycled catalyst, save costs and reduce pollution caused by acid emissions. u New technologies can produce residue recycling, water conservation and effective solution to emissions. u can use new technology to improve the degree of mechanization, the effective protection of the safety and health of workers to operate. u synchronized with the new technology, the company is supporting the aid. KL-M series additives for the production of pharmaceutical grade, industrial-grade PVA porous sponge design; KL-A series additives for the production of pharmaceutical-grade PVA sponges designed macroporous; KL-Q additive sponge product enhancers; KL -S a sponge improver.