Easily-degradable synthetic resin tile and preparation method thereof

A synthetic resin and easy-to-degrade technology, applied in the field of synthetic resin tiles, can solve environmental damage and other problems, and achieve the effects of avoiding environmental damage, no pores inside, high elasticity and hardness

Inactive Publication Date: 2019-09-24
福建祥龙塑胶有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0002] Most of the existing synthetic resin tiles are made of non-degradable materials to improve the service life an...
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Abstract

The invention relates to a synthetic resin tile, specifically to an easily-degradable synthetic resin tile and a preparation method thereof. The easily-degradable synthetic resin tile comprises a PVC layer, a PLA layer and an ASA layer which are successively arranged from the inside to the outside, wherein the PVC layer comprises PVC powder, heavyweight calcium carbonate, wood charcoal powder, PLA powder, a stabilizer, a lubricant, a processing auxiliary agent and a toughening agent; the PLA layer comprises PLA powder; and the ASA layer comprises PLA powder, ASA and bamboo-wood powder. The preparation method comprises the following steps: heating the PVC powder, the wood charcoal powder and the PLA powder under stirring to 60 DEG C, adding the stabilizer, the toughening agent and the processing auxiliary agent, carrying out heating under stirring to 90 DEG C, then adding a filling agent and the lubricant, continuing heating under stirring to 120 DEG C, carrying out cooling to 45 DEG C, carrying out extrusion through a conical twin-screw extruder, heating the PLA powder to 170 DEG C, carrying out extrusion through the conical twin-screw extruder, heating the ASA and the PLA powder under stirring to 90 DEG C, and carrying out extrusion through a single-screw extruder; thus, the synthetic resin tile is obtained through a three-layer coextrusion process. According to the invention, through compatibility of the PVC powder, the wood charcoal powder, the PLA powder and the bamboo-wood powder, the synthetic resin tile with high elasticity and degradation easiness is prepared.

Application Domain

Synthetic resin layered productsLamination +1

Technology Topic

ChemistryCalcium carbonate +5

Examples

  • Experimental program(6)

Example Embodiment

[0038] Example 1:
[0039] The easily degradable synthetic resin tile includes: a PVC layer, a PLA layer and an ASA layer sequentially arranged from the inside and the outside. The PVC layer includes the following components in parts by weight: 30 parts of PVC powder, 80 parts of heavy calcium carbonate, 45 parts of charcoal powder, 25 parts of PLA powder, 4 parts of stabilizer, lubricant: 0.1 part, 1 part of processing aid, and Toughener 4 parts; PLA layer includes the following components by weight: PLA powder 10 parts; ASA layer includes the following components by weight: PLA powder 10 parts, ASA 30 parts, and bamboo wood powder 7 parts.
[0040] The preparation of the easily degradable synthetic resin tile in this embodiment includes the following steps:
[0041] S1: Stir and mix materials: Heat and stir the PVC powder, charcoal powder and PLA powder in the above weight ratio to 60°C, add stabilizers, toughening agents, and processing aids, heat and stir to 90°C, then add fillers and lubrication Then continue to heat and stir to 120°C to obtain the mixture;
[0042] S2: After the resulting mixture is cooled to 45°C, it is passed through a 40-mesh vibrating screen to filter out impurities;
[0043] S3: Pass the filtered mixture through a conical twin-screw extruder to extrude the mixture melt, heat PLA to 170°C, then extrude the PLA melt through the conical twin-screw extruder, and heat ASA and PLA powder After stirring to 90℃, the ASA composite melt is extruded through a single-screw extruder; the mixture melt, PLA melt and ASA composite melt are extruded through a three-layer co-extrusion method to obtain PVC layers from the inside to the outside. , PLA layer and ASA layer composite layer, the mixture melt forms the PVC layer, the PLA melt forms the PLA layer coated on the PVC layer, and the ASA melt forms the ASA layer coated on the PLA surface; the above refers to The relevant parameters of the conical twin-screw extruder are set as follows: the host speed is 28 rpm, the feeding speed is 22 rpm, the host current is 60A, the melting pressure is 15MPa, the melting temperature is 190℃, the temperature of the barrel 1 zone is set to 185℃, 2. The zone temperature is set to 175°C, the zone 3 temperature is set to 165°C, and the zone 4 temperature is set to 155°C. The temperature of the barrel of the co-extrusion machine used in the co-extrusion method is set to 210°C, the speed of the main engine is set to 6 revolutions, the temperature of the confluence core is set to 165°C, and the temperature of zone 1 to zone 6 of the co-extruder die is set to 205°C; The temperature of zone-12 is set to 205°C.
[0044] S4: The obtained composite layer is cooled by a pattern roll and embossed to form a green body with a pattern on the surface;
[0045] S5: The obtained blank is pressed into a shape by a mold, and is cooled and cut to a fixed length to obtain a synthetic resin tile.

Example Embodiment

[0046] Embodiment 2: The easily degradable synthetic resin tile includes: a PVC layer, a PLA layer and an ASA layer arranged in order from the inside and the outside. The PVC layer includes the following components in parts by weight: 30 parts of PVC powder, 100 parts of heavy calcium carbonate, 50 parts of charcoal powder, 30 parts of PLA powder, stabilizer: 4.8 parts, lubricant: 0.5 parts, 2 parts of processing aids, Toughener 6 parts; PLA layer includes the following components by weight: PLA powder 13 parts; ASA layer includes the following components by weight: PLA powder 15 parts, ASA 35 parts, and bamboo wood powder 10 parts.
[0047] The preparation of the easily degradable synthetic resin tile in this embodiment includes the following steps:
[0048] S1: Stir and mix materials: Heat and stir the PVC powder, charcoal powder and PLA powder in the above weight ratio to 60°C, add stabilizers, toughening agents, and processing aids, heat and stir to 90°C, then add fillers and lubrication Then continue to heat and stir to 120°C to obtain the mixture;
[0049] S2: After the resulting mixture is cooled to 45°C, it is passed through a 40-mesh vibrating screen to filter out impurities;
[0050] S3: Pass the filtered mixture through a conical twin-screw extruder to extrude the mixture melt, heat PLA to 170°C, then extrude the PLA melt through the conical twin-screw extruder, and heat ASA and PLA powder After stirring to 90℃, the ASA composite melt is extruded through a single-screw extruder; the mixture melt, PLA melt and ASA composite melt are extruded through a three-layer co-extrusion method to obtain PVC layers from the inside to the outside. , PLA layer and ASA layer composite layer, the mixture melt forms the PVC layer, the PLA melt forms the PLA layer coated on the PVC layer, and the ASA melt forms the ASA layer coated on the PLA surface; the above refers to The relevant parameters of the conical twin-screw extruder are set as follows: the host speed is 29 rpm, the feeding speed is 23 rpm, the host current is 65A, the melting pressure is 17MPa, the melting temperature is 191℃, the temperature of the barrel 1 zone is set to 185℃, 2. The zone temperature is set to 175°C, the zone 3 temperature is set to 165°C, and the zone 4 temperature is set to 155°C. The temperature of the barrel of the co-extrusion machine used in the co-extrusion method is set to 210°C, the speed of the main engine is set to 6 revolutions, the temperature of the confluence core is set to 165°C, and the temperature of zone 1 to zone 6 of the co-extruder die is set to 205°C; The temperature of zone-12 is set to 205°C.
[0051] S4: The obtained composite layer is cooled by a pattern roll and embossed to form a green body with a pattern on the surface;
[0052] S5: The obtained blank is pressed into a shape by a mold, and is cooled and cut to a fixed length to obtain a synthetic resin tile.

Example Embodiment

[0053] Example 3:
[0054] The easily degradable synthetic resin tile includes: a PVC layer, a PLA layer and an ASA layer sequentially arranged from the inside and the outside. The PVC layer includes the following components in parts by weight: 45 parts of PVC powder, 110 parts of heavy calcium carbonate, 55 parts of charcoal powder, 35 parts of PLA powder, 5.5 parts of stabilizer, lubricant: 5 parts, 5 parts of processing aids, and Toughener 7 parts; PLA layer includes the following components by weight: PLA powder 15 parts; ASA layer includes the following components by weight: PLA powder 20 parts, ASA 40 parts, and bamboo wood powder 12 parts.
[0055] The preparation of the easily degradable synthetic resin tile in this embodiment includes the following steps:
[0056] S1: Stir and mix materials: Heat and stir the PVC powder, charcoal powder and PLA powder in the above weight ratio to 60°C, add stabilizers, toughening agents, and processing aids, heat and stir to 90°C, then add fillers and lubrication Then continue to heat and stir to 120°C to obtain the mixture;
[0057] S2: After the resulting mixture is cooled to 45°C, it is passed through a 40-mesh vibrating screen to filter out impurities;
[0058] S3: Pass the filtered mixture through a conical twin-screw extruder to extrude the mixture melt, heat PLA to 170°C, then extrude the PLA melt through the conical twin-screw extruder, and heat ASA and PLA powder After stirring to 90℃, the ASA composite melt is extruded through a single-screw extruder; the mixture melt, PLA melt and ASA composite melt are extruded through a three-layer co-extrusion method to obtain PVC layers from the inside to the outside. , PLA layer and ASA layer composite layer, the mixture melt forms the PVC layer, the PLA melt forms the PLA layer coated on the PVC layer, and the ASA melt forms the ASA layer coated on the PLA surface; the above refers to The relevant parameters of the conical twin-screw extruder are set as follows: the host speed is 30 rpm, the feeding speed is 25 rpm, the host current is 70A, the melting pressure is 18MPa, the melting temperature is 192°C, the temperature of the barrel 1 zone is set to 185°C, 2. The zone temperature is set to 175°C, the zone 3 temperature is set to 165°C, and the zone 4 temperature is set to 155°C. The temperature of the barrel of the co-extrusion machine used in the co-extrusion method is set to 210°C, the speed of the main engine is set to 6 revolutions, the temperature of the confluence core is set to 165°C, and the temperature of zone 1 to zone 6 of the co-extruder die is set to 205°C; The temperature of zone-12 is set to 205°C.
[0059] S4: The obtained composite layer is cooled by a pattern roll and embossed to form a green body with a pattern on the surface;
[0060] S5: The obtained blank is pressed into a shape by a mold, and is cooled and cut to a fixed length to obtain a synthetic resin tile.

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