Degradable plastic bottle, preparation method and degradation method thereof
The present application relates to a technical field of plastic article, and in particular, to a degradable plastic bottle, a preparation method therefor and a degradation method therefor. The bottle is prepared by blowing a combined degradable material formed by melting and extruding a resin mixture, the resin mixture includes the following components in parts by weight: 10-60 parts of polylactic acid, 20-50 parts of polybutylene adipate terephthalate, 0.5-20 parts of polymethyl ethylene carbonate, 0.5-20 parts of polyglycolic acid, and 1-10 parts of calcium carbonate.
1. A degradable plastic bottle, wherein the degradable plastic bottle is prepared by blowing a combined degradable material formed by melting and extruding a resin mixture, and the resin mixture comprises the following components in parts by weight: 10-60 parts of polylactic acid, 20-50 parts of polybutylene adipate terephthalate, 0.5-20 parts of polymethyl ethylene carbonate, 0.5-20 parts of polyglycolic acid, and 1-10 parts of calcium carbonate.
2. The degradable plastic bottle according to claim 1 , wherein the resin mixture comprises the following components in parts by weight: 20-50 parts of the polylactic acid, 30-40 parts of the polybutylene adipate terephthalate, 5-15 parts of the polymethyl ethylene carbonate, 5-15 parts of the polyglycolic acid, and 3-7 parts of the calcium carbonate.
3. The degradable plastic bottle according to claim 1 , wherein the resin mixture further comprises 0.5-20 parts of poly butylene succinate.
4. The degradable plastic bottle according to claim 3 , wherein the resin mixture further comprises 0.5-20 parts of polycaprolactone.
5. The degradable plastic bottle according to claim 1 , wherein the polylactic acid comprises at least one of poly(L-lactide) or poly(D-lactide).
6. The degradable plastic bottle according to claim 5 , wherein a weight ratio of the poly(D-lactide) and the poly(L-lactide) in the polylactic acid is 1:(0.8-1.2).
7. The degradable plastic bottle according to claim 6 , wherein an average molecule weight of the poly(L-lactide) is 1000-4200.
8. The degradable plastic bottle according to claim 7 , wherein an average molecule weight of the poly(D-lactide) is 1000-20000.
9. A resin mixture used for preparing degradable material, wherein the resin mixture comprises the following components in parts by weight: 10-60 parts of polylactic acid, 20-50 parts of polybutylene adipate terephthalate, 0.5-20 parts of polymethyl ethylene carbonate, 0.5-20 parts of polyglycolic acid, and 1-10 parts of calcium carbonate.
10. The resin mixture for preparing degradable material according to claim 9 , wherein the resin mixture comprises the following components in parts by weight: 20-50 parts of the polylactic acid, 30-40 parts of the polybutylene adipate terephthalate, 5-15 parts of the polymethyl ethylene carbonate, 5-15 parts of the polyglycolic acid, and 3-7 parts of the calcium carbonate.
11. The resin mixture for preparing degradable material according to claim 9 , wherein the resin mixture further comprises 0.5-20 parts of poly butylene succinate.
12. The resin mixture for preparing degradable material according to claim 11 , wherein the resin mixture further comprises 0.5-20 parts of polycaprolactone.
13. The resin mixture for preparing degradable material according to claim 9 , wherein the polylactic acid comprises at least one of poly(L-lactide) or poly(D-lactide).
14. The resin mixture for preparing degradable material according to claim 13 , wherein a weight ratio of the poly(D-lactide) and the poly(L-lactide) in the polylactic acid is 1:(0.8-1.2).
15. The resin mixture for preparing degradable material according to claim 14 , wherein an average molecule weight of the poly(L-lactide) is 1000-4200.
16. The resin mixture for preparing degradable material according to claim 15 , wherein an average molecule weight of the poly(D-lactide) is 1000-20000.