Structural adhesive

Abstract

The invention discloses a structural adhesive. The structural adhesive is prepared from the following components in parts by weight: 30 to 65 parts of styrenic thermoplastic elastomer, 5 to 15 part ofmodified thermoplastic elastomer, 25 to 45 parts of modified hydrogenated petroleum resin, 2 to 8 parts of acrylic type polymer absorbent resin, 2 to 6 parts of an antioxidant and 3 to 7 parts of naphthenic oil, wherein a styrenic thermoplastic elastomer is a mixture of a styrene-butadiene-styrene block copolymer (SBS) and a polystyrene-polyethylene-polybutylene-polystyrene block copolymer (SEBS). The structural adhesive is capable of increasing a water-absorbing capacity of a disposable sanitary product, and keeping a good water-absorbing property while absorbing liquid containing salinity,enabling the liquid to be rapidly absorbed by a water-absorbing inner layer of the sanitary product, reducing contact time of skin and the liquid, and preventing the fact that the sanitary product isin supersaturation by absorbing the liquid, so that the liquid penetrates to an outer surface layer and contacts with the skin.

Description

technical field [0001] The invention belongs to the field of polymer adhesives, in particular to a structural adhesive. Background technique [0002] Structural adhesives are widely used in the disposable hygiene products industry because of their good adhesion and high cost performance, such as: women's hygiene products, diapers and medical supplies, etc.; various components of disposable hygiene products, such as the inner surface of diapers, absorbent The core layer and the base fabric need to be bonded by structural adhesives to realize their structural functions; diapers and sanitary napkins in disposable sanitary products will come into contact with urine, although diapers and sanitary napkins have their own internal features to absorb urine. Liquid superabsorbent resin, but because the salt in urine will reduce the water absorption of ordinary superabsorbent resin, and the superabsorbent resin in sanitary products is limited, when the superabsorbent resin reaches satu...

AI Technical Summary

Problems solved by technology

[0002] Structural adhesives are widely used in the disposable hygiene products industry because of their good adhesion and high cost performance, such as: women's hygiene products, diapers and medical supplies, etc.; various components of disposable hygiene products, such as the inner surface of diapers, absorbent The core layer and the base fabric need to be bonded by structural adhesives to realize their structural functions; diapers and sanitary napkins in disposable sanitary products will come into contact with urine, although diapers and sanitary napkins have their own internal features to absorb urine. Liquid superabsorbent resin, but because the salt in urine will reduce the water absorption of ordinary superabsorbent resin, and the superabsorbent resin in sanitary products is limited, when the superabsorbent resin reaches saturation, the urine that cannot be absorbed It will slowly penetrate into the outer layer; at this time, if the structural glue adhering the inner and outer layers does not have good water absorption, it will make urine penetrate into the outer surface and come into contact with human skin

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