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127results about How to "Dry surface" patented technology

UV-curing adhesive with low Tg point and high permeability and preparation method thereof

The invention provides a UV-curing adhesive with low Tg point and high permeability and a preparation method thereof. The UV-curing adhesive is prepared from the following raw materials in parts by weight: 10-30 parts of a self-prepared urethane acrylate prepolymer with low Tg point, 30-60 parts of aliphatic polyurethane acrylate with low Tg point, 20-50 parts of a reactive diluent with low Tg point, 0.5-5 parts of a leveling wetting agent, 2-4 parts of a photoinitiator and 1-3 parts of a silane coupling agent; the self-prepared urethane acrylate prepolymer comprises long-chain glycol, diisocyanate, a catalyst, a polymerization inhibitor, an antioxygen and hydroxyl acrylate resin; the molar ratio of long-chain glycol, diisocyanate and acroleic hydroxyl ester is 1:(1.82.0):(1.8-2.0); the catalyst, the polymerization inhibitor and the antioxygen respectively account for 0.01-0.1wt% of the urethane acrylate prepolymer with low Tg point. Compared with the prior art, the UV-curing adhesive has the vitrification temperature less than or equal to 50 DEG C, and has the performances of low surface tension is low, good wettability, good surface dryness, excellent tenacity, excellent dampness and humidity resistance, high temperature resistance and the like.
Owner:YANTAI SEAYU NEW MATERIALS CORP LTD

Bio-antimicrobial water-absorbing sanitary material and preparation method thereof

The invention discloses a bio-antimicrobial water-absorbing sanitary material, which is applied to medical dressing materials, sanitary napkins, sanitary towels and paper diapers, and a preparation method of the bio-antimicrobial water-absorbing sanitary material. An antimicrobial liquid-permeable surface layer, an antimicrobial functional absorbent core and a liquid-impermeable bottom layer are sequentially arranged from top to bottom in a superposed mode, wherein the antimicrobial liquid-permeable surface layer is a single-layer or double-layer non-woven fabric which is processed by virtue of a bio-antimicrobial agent, and the bio-antimicrobial agent is one or more of epsilon-polylysine and / or epsilon-polylysine hydrochloride, natamycin and nisin; the antimicrobial absorbent core comprises the bio-antimicrobial agent which is one or more of epsilon-polylysine, epsilon-polylysine hydrochloride, natamycin and nisin, a polymer absorbent, fluff pulp and plant extracts; and a porous air-permeable thin film serves as a backing layer. The bio-antimicrobial water-absorbing sanitary material has the advantages of being good in antimicrobial endurance, broad in antimicrobial spectrum, high in biological safety and low in reverse osmosis rate.
Owner:TIANJIN UNIV OF SCI & TECH
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