Water-absorbing material
View Patent ↗A water absorbing material includes a waste material. The waste material has a content of 20 wt % to 90 wt % to a total weight of the water absorbing material. The waste material is a water absorbing material which is granular and which comprises two or more plastic materials. The water absorbing material has an ignition point of 400° C. or greater, an ash content of 20 wt % or less, a calorific value in a range of 2930 J/g (700 kcal/kg) to 10465 J/g (2500 kcal/kg) in a state after absorbing moisture that has a weight in a range of 1.1 to 1.6 times the total weight, and a carbon dioxide yield in a range of 1700 g/kg to 2500 g/kg.
1. A water absorbing material comprising:
a waste material having a content of 20 wt % to 90 wt % to a total weight of the water absorbing material, and including two or more chemically distinct plastic materials; and
the water absorbing material being granular, and having:
an ignition point of 400° C. or greater,
an ash content of 20 wt % or less,
a calorific value in a range of 2930 J/g (700 kcal/kg) to 10465 J/g (2500 kcal/kg) in a state after absorbing moisture that has a weight in a range of 1.1 to 1.6 times the total weight of the water absorbing material before absorbing moisture, and
a carbon dioxide yield in a range of 1700 g/kg to 2500 g/kg,
the water absorbing material having a multi-layer structure having a granular core portion and a coating layer portion, and
the coating layer portion comprising water-soluble powder of a coloring material which is configured to develop a color upon contact with external moisture, and which is directly contained in the coating layer portion.
2. The water absorbing material according to claim 1 , wherein one of the chemically distinct plastic materials is polyurethane.
3. The water absorbing material according to claim 1 , wherein the granular core portion has a first color,
the coating layer portion develops a second color which is different from the first color when the water-soluble powder of the coloring material comes into contact with the external moisture, and
the water absorbing material produces a third color which is a mixed color of the first color and the second color after the second color is developed.
4. The water absorbing material according to claim 1 , wherein the water-soluble powder of the coloring material has not developed a color before contact with the external moisture.
5. A water absorbing material comprising:
a waste material having a content of 20 wt % to 90 wt % to a total weight of the water absorbing material, and including two or more chemically distinct plastic materials; and
the water absorbing material being granular, and having:
an ignition point of 400° C. or greater,
an ash content of 20 wt % or less,
a calorific value in a range of 11871 J/g (2836 kcal/kg) to 34250 J/g (8182 kcal/kg) before absorbing moisture, and
a carbon dioxide yield in a range of 1700 g/kg to 2500 g/kg,
the water absorbing material having a multi-layer structure having a granular core portion and a coating layer portion, and
the coating layer portion comprising water-soluble powder of a coloring material which is configured to develop a color upon contact with external moisture, and which is directly contained in the coating layer portion.
6. The water absorbing material according to claim 5 , wherein one of the chemically distinct plastic materials is polyurethane.
7. The water absorbing material according to claim 5 , wherein the granular core portion has a first color,
the coating layer portion develops a second color which is different from the first color when the water-soluble powder of the coloring material comes into contact with the external moisture, and
the water absorbing material produces a third color which is a mixed color of the first color and the second color after the second color is developed.
8. The water absorbing material according to claim 5 , wherein the water-soluble powder of the coloring material has not developed a color before contact with the external moisture.