3results about How to "Improve liquid permeability" patented technology

This invention discloses a special consumable for a double-layer cat litter box and its preparation and usage method, relating to the field of pet cleaning products technology. The invention's upper layer of cat litter and lower layer of absorbent and deodorizing granules, through synergistic design of formula and process, form a complete pet excrement treatment system. The upper layer of cat litter is responsible for trapping and encapsulating feces and draining urine, while the lower layer of absorbent and deodorizing granules is responsible for absorbing and treating odors generated by urine and feces. The combined use of these two layers achieves a highly efficient usage mode with automatic urine seepage, direct feces removal, no need for stirring the upper layer, and regular replacement of the lower layer. This significantly simplifies daily maintenance procedures, reduces the labor intensity of pet ownership, and significantly improves the user experience for family pet cat owners.

Provided is a non-woven fabric having excellent liquid permeability and mechanical properties for a high-viscosity liquid. The non-woven fabric includes thermally adhesive composite fibers in which intersection points are thermally adhered, the specific volume of the non-woven fabric is 60 cm3 / g to 95 cm3 / g, and the fiber density ratio of a high-density region to a low-density region in the non-woven fabric is 1.4 or less. The thermally adhesive composite fibers constituting the non-woven fabric are distributed in a state of low density in the thickness direction of the non-woven fabric, and the fibers form adhesive points at an appropriate density.

The present application relates to the technical field of composite materials, and particularly relates to a porous superabsorbent polymer and a preparation method thereof; the preparation raw material of the porous superabsorbent polymer comprises the following components in parts by weight: 10-30 parts of acrylic acid, 40-60 parts of water, 20-25 parts of sodium hydroxide, 0.4-1 part of a pore-forming additive, 0.2-0.5 parts of an internal crosslinking agent, 0.05-0.1 parts of an initiator, and 0.1-1 parts of a surface crosslinking agent. The present application innovatively adopts a secondary drying process, and simultaneously uses a special pore-forming additive; the additive is decomposed to produce volatile monomers and small-molecule esters at high temperatures; the small-molecule esters can undergo an ester exchange reaction with carboxylate groups on molecular chains, thereby playing a role in reinforcing pore channels, so that the pore channels of the superabsorbent polymer are stable and strong, and the liquid permeability and absorption speed of the product are greatly improved.