A formulation for producing a polymeric material including high-density polyethylene, a chemical blowing agent, and other optional components is described.
대표청구항▼
1. An insulative cellular non-aromatic polymeric material comprising about 50% to about 99.9% by weight of high density polyethylene (HDPE) base resin,up to about 1% by weight of a chemical blowing agent,up to about 15% by weight of a nucleating agent, anda physical blowing agent,wherein the insulat
1. An insulative cellular non-aromatic polymeric material comprising about 50% to about 99.9% by weight of high density polyethylene (HDPE) base resin,up to about 1% by weight of a chemical blowing agent,up to about 15% by weight of a nucleating agent, anda physical blowing agent,wherein the insulative cellular non-aromatic polymeric material has a density of about 0.2 g/cm3 to about 0.9 g/cm3. 2. The insulative cellular non-aromatic polymeric material of claim 1, further comprising a low density polyethylene (LDPE) base resin. 3. The insulative cellular non-aromatic polymeric material of claim 2, wherein the LDPE base resin is up to about 50% by weight of the insulative cellular non-aromatic polymeric material. 4. The insulative cellular non-aromatic polymeric material of claim 3, wherein the LDPE base resin is about 10% to about 30% by weight of the insulative cellular non-aromatic polymeric material. 5. The insulative cellular non-aromatic polymeric material of claim 4, wherein the LDPE base resin is about 20% by weight of the insulative cellular non-aromatic polymeric material. 6. The insulative cellular non-aromatic polymeric material of claim 4, wherein the chemical blowing agent comprises citric acid and is about 0.1% to about 0.5% by weight of the insulative cellular non-aromatic polymeric material. 7. The insulative cellular non-aromatic polymeric material of claim 3, wherein the HDPE base resin comprises a copolymer. 8. The insulative cellular non-aromatic polymeric material of claim 7, wherein the physical blowing agent is introduced at a rate between about 0.01 kg/h and about 0.6 kg/h. 9. The insulative cellular non-aromatic polymeric material of claim 8, wherein the physical blowing agent is introduced at a rate of about 0.03 kg/h. 10. The insulative cellular non-aromatic polymeric material of claim 2, wherein the nucleating agent is about 0.5% to about 5% by weight of the insulative cellular non-aromatic polymeric material. 11. The insulative cellular non-aromatic polymeric material of claim 1, wherein the HDPE base resin is about 60% to about 99% by weight of the insulative cellular non-aromatic polymeric material. 12. The insulative cellular non-aromatic polymeric material of claim 11, wherein the HDPE base resin is about 80% by weight of the insulative cellular non-aromatic polymeric material. 13. The insulative cellular non-aromatic polymeric material of claim 12, wherein the chemical blowing agent is about 0.1% by weight of the insulative cellular non-aromatic polymeric material. 14. The insulative cellular non-aromatic polymeric material of claim 13, wherein the nucleating agent is talc and is about 1% by weight of the insulative cellular non-aromatic polymeric material. 15. The insulative cellular non-aromatic polymeric material of claim 1, wherein the nucleating agent is talc and is about 0.5% to about 5% by weight of the insulative cellular non-aromatic polymeric material and the chemical blowing agent comprises citric acid and is about 0.1% to about 0.5% by weight of the insulative cellular non-aromatic polymeric material. 16. The insulative cellular non-aromatic polymeric material of claim 1, wherein the density of the insulative cellular non-aromatic polymeric material is about 0.25 g/cm3 to about 0.4 g/cm3. 17. The insulative cellular non-aromatic polymeric material of claim 16, wherein the density of the insulative cellular non-aromatic polymeric material is about 0.35 g/cm3. 18. An insulative cellular non-aromatic polymeric material comprising a base resin blend including a high density polyethylene (HDPE) base resin and a low density polyethylene (LDPE) base resin,a chemical blowing agent,a nucleating agent, anda physical blowing agent,wherein the insulative cellular non-aromatic polymeric material has a density of about 0.2 g/cm3 to about 0.5 g/cm3. 19. The insulative cellular non-aromatic polymeric material of claim 18, wherein the LDPE base resin is up to about 50% by weight of the base resin blend. 20. The insulative cellular non-aromatic polymeric material of claim 19, wherein the LDPE base resin is about 10% to about 30% by weight of the base resin blend. 21. The insulative cellular non-aromatic polymeric material of claim 20, wherein the LDPE base resin is about 20% by weight of the base resin blend. 22. The insulative cellular non-aromatic polymeric material of claim 19, wherein the insulative cellular non-aromatic polymeric material further comprises regrind. 23. The insulative cellular non-aromatic polymeric material of claim 22, wherein the regrind is up to about 50% by weight of the insulative cellular non-aromatic polymeric material. 24. The insulative cellular non-aromatic polymeric material of claim 23, wherein the regrind is up to about 30% by weight of the insulative cellular non-aromatic polymeric material. 25. The insulative cellular non-aromatic polymeric material of claim 24, wherein the physical blowing agent is up to about 0.2% of the insulative cellular non-aromatic polymeric material. 26. The insulative cellular non-aromatic polymeric material of claim 19, wherein the HDPE base resin is about 50% to about 90% by weight of the base resin blend. 27. The insulative cellular non-aromatic polymeric material of claim 26, wherein the HDPE base resin is about 80% by weight of the base resin blend. 28. The insulative cellular non-aromatic polymeric material of claim 27, wherein the physical blowing agent is about 0.1% to about 0.3% of the insulative cellular non-aromatic polymeric material. 29. The insulative cellular non-aromatic polymeric material of claim 28, wherein the physical blowing agent is N2 gas.
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