FOAMED PET COMPOSITE BOARD AND PREPARATION METHOD THEREOF

Abstract

The present disclosure provides a foamed PET composite board and a preparation method thereof. The foamed PET composite board provided is prepared from a raw material including the following components in parts by mass: 100 parts of PET, 10-20 parts of a regulator, 100-200 parts of an inorganic filler, 1-2 parts of a blowing agent, and 1-4 parts of PE wax, and the PET is recycled PET.

Claims

1. (canceled)

2. A foamed PET composite board which is prepared from a raw material including the following components in parts by mass: 100 parts of the PET, 14-16 parts of the regulator, 140-160 parts of the inorganic filler, 1-2 parts of the blowing agent, and 2-3 parts of the PE wax, wherein the respective amounts of the PET, the regulator, the inorganic filler, the blowing agent and the PE wax are selected so that the hardness of the PET composite board ranges from 45 to 51 D and the bending strength ranges from 158 to 203 MPa, wherein the inorganic filler is calcium carbonate and/or talc powder, and a mass ratio of calcium carbonate to talc powder is in a range of 9:1 to 1:9; wherein the blowing agent is azodicarbonamide (AC) blowing agent and wherein the regulator is a compound acrylate (ACR) foaming regulator.

3. The foamed PET composite board according to claim 2, wherein the foamed PET composite board is prepared from a raw material including the following components in parts by mass: 100 parts of the PET, 15 parts of the regulator, 150 parts of the inorganic filler, 2 parts of the blowing agent, and 3 parts of the PE wax.

4. (canceled)

5. (canceled)

6. (canceled)

7. (canceled)

8. A method for preparing the foamed PET composite board according to claim 2, including: mixing the PET, the regulator, the inorganic filler, the blowing agent and the PE wax, and then subjecting to melt extrusion, plastic fixing and calendering molding in sequence to obtain the foamed PET composite board, wherein the respective amounts of the PET, the regulator, the inorganic filler, the blowing agent and the PE wax are selected to achieve the hardness board from 45 to 51 D and the bending strength from 158 to 203 MPa, of the foamed PET composite board, wherein a foaming ratio of raw materials during the melt extrusion is 0.86-1.0 times.

9. The method according to claim 8, wherein the melt extrusion is conducted at a temperature in a range of 200-260° C.

10. (canceled)

11. (canceled)

12. (canceled)

13. (canceled)

14. (canceled)

15. (canceled)

16. (canceled)

17. The method according to claim 8, wherein the foamed PET composite board is prepared from a raw material comprising the following components in parts by mass: 100 parts of the PET, 14-16 parts of the regulator, 140-160 parts of the inorganic filler, 1-2 parts of the blowing agent, and 2-3 parts of the PE wax.

18. The method according to claim 8, wherein the foamed PET composite board is prepared from a raw material comprising the following components in parts by mass: 100 parts of the PET, 15 parts of the regulator, 150 parts of the inorganic filler, 2 parts of the blowing agent, and 3 parts of the PE wax.

19. The method according to claim 8, wherein the inorganic filler is calcium carbonate and/or talc powder.

20. The method according to claim 19, wherein when the inorganic filler is calcium carbonate and talc powder, a mass ratio of calcium carbonate to talc powder is in a range of 9:1 to 1:9.

21. (canceled)

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a physical photo of the foamed PET composite board prepared according to Example 1.

[0026] FIG. 2 is a physical photo of the foamed PET composite board prepared according to Example 2.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present disclosure provides a foamed PET composite board, which is prepared from a raw material including the following components in parts by mass:

[0028] 100 parts of PET, 10-20 parts of a regulator, 100-200 parts of an inorganic filler, 1-2 parts of a blowing agent, and 1-4 parts of PE wax, wherein the PET is recycled PET.

[0029] In the present disclosure, unless otherwise specified, all the raw materials used are commercially available products in the art.

[0030] In the present disclosure, the PET may preferably be recycled PET, and more preferably PET recycled from PET bottle chips.

[0031] In the present disclosure, in some embodiments, the recycling process of the PET bottle chips may include:

[0032] separating a body of a PET bottle from a cap and a label, and then crushing, cleaning and drying successively.

[0033] In some specific embodiments, the steps are performed as follows: [0034] step 1, picking and sorting various PET bottle chips and tearing off labels on the outside, most of which are OPP (o-phenylphenol) and some are PVC (polyvinyl chloride) shrink films and have to be stripped away firstly; [0035] step 2, conducting a crushing process, during which rinsing is carried out with water to remove dirt from the various PET bottle chips; [0036] step 3, placing obtained chips in a steam treatment device and adding sodium hydroxide (caustic soda flakes) to remove greases and other stubborn impurities; [0037] step 4, washing with clean water, spin-drying to remove the remaining water and bagging, and then drying in a vacuum oven; and [0038] step 5, smashing into pieces.

[0039] Based on the parts by mass of the PET, the foamed PET composite board may preferably include 1-2 parts of the blowing agent, and more preferably 2 parts.

[0040] In the present disclosure, in some embodiments, the blowing agent may be AC blowing agent.

[0041] Based on the parts by mass of the PET, the foamed PET composite board may preferably include 14-16 parts of the regulator, and more preferably 15 parts.

[0042] In the present disclosure, in some embodiments, the regulator may be a compound ACR foaming regulator that has an effect of increasing solution strength.

[0043] Based on the parts by mass of the PET, the foamed PET composite board may preferably include 140-160 parts of the inorganic filler, and more preferably 150 parts.

[0044] In the present disclosure, in some embodiments, the inorganic filler may be calcium carbonate and/or talc powder.

[0045] In the present disclosure, when the inorganic filler preferably is calcium carbonate and talc powder, a mass ratio of calcium carbonate to talc powder may preferably be in a range of (1-9):(9-1), and more preferably 1:1.

[0046] In the present disclosure, in some embodiments, the inorganic filler may have a particle size of 200-400 mesh.

[0047] Based on the parts by mass of the PET, the foamed PET composite board may preferably include 2-3 parts of PE wax, and more preferably 3 parts.

[0048] In some specific embodiments, the foamed PET composite board may be prepared from a raw material including the following components in parts by mass:

[0049] 100 parts of the PET, 15 parts of the regulator, 150 parts of the inorganic filler, 2 parts of the blowing agent, and 3 parts of the PE wax.

[0050] The present disclosure further provides a method for preparing the foamed PET composite board according to the above technical solutions, including the following steps:

[0051] mixing PET, a regulator, an inorganic filler, a blowing agent and PE wax, and subjecting to melt extrusion, plastic fixing and calendaring molding in sequence to obtain the foamed PET composite board.

[0052] In the present disclosure, the melt extrusion may preferably be conducted at a temperature in a range of 200-260° C., and more preferably 240° C.

[0053] There are no special limits to the specific processes of the plastic fixing and calendaring molding in the present disclosure, and the processes well known to those skilled in the art may be used.

[0054] To further describe the present disclosure, hereinafter, the foamed PET composite board and the preparation method thereof provided in the present disclosure will be described in detail with reference to examples, which should not be construed as limiting the protection scope of the present disclosure.

[0055] Raw materials for preparing the foamed PET composite boards according to Examples 1 to 5 are shown in Table 1.

TABLE-US-00001 TABLE 1 Raw materials for preparing foamed PET composite boards according to Examples 1 to 5 (part by mass) AC Recycled Regu- Calcium Talc blowing PE PET lator carbonate powder agent wax Example 1 100 10 40 60 1 1 Example 2 100 14 70 70 2 2 Example 3 100 15 75 75 2 3 Example 4 100 16 90 70 1 3 Example 5 100 10 50 50 2 4

[0056] A preparation method of the foamed PET composite boards according to Examples 1 to 5 was performed as follows:

[0057] Recycling PET from PET bottle chips: [0058] step 1, various PET bottle chips were picked and sorted, and labels on the outside were torn off, wherein most of the labels were OPP and some were PVC shrink films that had to be stripped away firstly; [0059] step 2, a crushing process was conducted, during which rinsing was performed with water to remove dirt from the various PET bottle chips obtained from step 1; [0060] step 3, the chips obtained from step 2 were placed in a steam treatment device, and sodium hydroxide (caustic soda flakes) was added to remove greases and other stubborn impurities; [0061] step 4, the chips obtained from step 3 were washed with clean water, spin-dried to remove the remaining water and bagged, and then were dried in a vacuum oven; and [0062] step 5, the chips obtained from step 4 were smashed into pieces.

[0063] The recycled PET, the regulator, the inorganic filler, the blowing agent and PE wax were mixed, and then subjected to melt extrusion (conducted at 240° C.), plastic fixing and calendaring molding successively, obtaining a foamed PET composite board.

[0064] FIG. 1 is a physical photo of the foamed PET composite board prepared according to Example 1; FIG. 2 is a physical photo of the foamed PET composite board prepared according to Example 2.

[0065] The foaming ratios of the raw materials of Examples 1 to 5 during the melt extrusion were 0.8-, 0.86-, 1.0-, 0.9-, and 0.94-times, respectively.

[0066] The hardness, static load, bending strength and noise reduction coefficient were tested for the foamed PET composites prepared according to Examples 1 to 5. Herein, the noise reduction coefficient refers to GBJ47-1983. Results are shown in Table 2.

TABLE-US-00002 TABLE 2 The performance testing results of the foamed PET composites prepared according to Examples 1 to 5 Hardness/ Static Bending Noise reduction D load/mm strength/MPa coefficient Example 1 53 0.15 185 0.96 Example 2 47 0.16 167 0.93 Example 3 45 0.18 158 0.89 Example 4 51 0.14 203 0.95 Example 5 43 0.19 169 0.94

[0067] The examples as described above are merely the preferred embodiments of the present disclosure, and are not intended to limit the present disclosure in any form. It should be understood that for those skilled in the art, several improvements and modifications could be made without departing from the principle of the present disclosure, and those improvements and modifications shall be within the protection scope of the present disclosure.