Stone-plastic composite board extrusion molding process

An extrusion molding and composite sheet technology, applied in the field of plastic sheet extrusion, can solve the problems that waste and resin cannot be uniformly plasticized, aggravate the adverse effects of product quality, damage the screw of the extruder, etc. The effect of large elastic modulus and small equipment investment

Inactive Publication Date: 2018-05-11
SHAANXI SCI TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, it often occurs that the waste and resin cannot be uniformly plasticized, the produced product is prone to breakage, the rate of defective products is high, the waste will damage the screw of the extruder, and the life of the screw is s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] 1) According to the mass ratio of 60% modified waste mineral powder, 25% PVC resin powder, 1% stearic acid, 2% paraffin, 6% calcium and zinc composite stabilizer (calcium stearate, zinc stearate and epoxy A liquid mixture composed of soybean oil), 3% acrylic resin ACR and 3% chlorinated polyethylene CPE are mixed, and a PVC composite material is prepared through a PVC composite material suitable for extrusion molding;

[0025] 2) The PVC composite material is added to the twin-screw extruder through a dosing system. The four-stage temperature of the screw is controlled at 205°C, 195°C, 190°C, and 180°C. The screw extrusion speed and crawler traction speed are controlled at 85cm / min, extruded at high temperature into a die equipped with a static mixer. The temperature of the four sections of the die is controlled at 180°C, 190°C, 180°C, and 190°C respectively, and then 2-4 sets in series on the vacuum setting table The die head is vacuum shaped, and then ...

Example Embodiment

[0028] Example 2

[0029] 1) According to the mass ratio of 70% modified waste mineral powder, 20% PVC resin powder, 1% stearic acid, 1% paraffin, 5% calcium and zinc composite stabilizer (calcium ricinoleate, zinc ricinoleate and epoxy A liquid mixture composed of soybean oil), 1% acrylic resin ACR and 2% chlorinated polyethylene CPE are mixed, and a PVC composite material is prepared through a PVC composite material suitable for extrusion molding;

[0030] 2) The PVC composite material is added to the twin-screw extruder through a dosing system. The four-stage temperature of the screw is controlled at 250°C, 240°C, 230°C, and 220°C. The screw extrusion speed and the crawler traction speed are controlled at 85 -100cm / min, extruded at high temperature into a die equipped with a static mixer. The temperature of the four sections of the die is controlled at 200℃, 190℃, 180℃, and 190℃ respectively, and then passed through 2 on the vacuum setting table. -4 tandem die heads are vacuum ...

Example Embodiment

[0033] Example 3

[0034] 1) According to the mass ratio, 68% modified waste mineral powder, 22% PVC resin powder, 2% paraffin wax, 3% calcium zinc compound stabilizer (a liquid mixture composed of calcium stearate, zinc ricinoleate and epoxy soybean oil) ), 2% acrylic resin ACR and 3% chlorinated polyethylene CPE are mixed, and the PVC composite material is prepared by the PVC composite material suitable for extrusion molding;

[0035] 2) The PVC composite material is added to the twin-screw extruder through a dosing system. The four-stage temperature of the screw is controlled at 205°C, 200°C, 210°C, and 220°C. The screw extrusion speed and the crawler traction speed are controlled at 85 -100cm / min, extruded at high temperature into a die equipped with a static mixer. The temperature of the four sections of the die is controlled at 190℃, 200℃, 190℃, and 180℃ respectively, and then passed through 2 on the vacuum setting table. -4 tandem die heads are vacuum shaped, and then forme...

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PUM

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Abstract

The invention discloses a stone-plastic composite board extrusion molding process which comprises: mixing 60% to 70% of modified waste mineral powder, 20% to 25% of PVC (polyvinyl chloride) resin powder, 0 to 1% of stearic acid, 1% to 2% of paraffin, 3% to 6% of PVC calcium-zinc composite stabilizer, 1% to 3% of acrylic resin and 1% to 3% of chlorinated polyethylene, and preparing to obtain a PVCcompound material through a PVC compound material applicable to extrusion molding; adding the PVC compound material into a double-screw extruder by a quantitative feeding system, adopting four-stage temperature control, and extruding at a high temperature; enabling die head position static mixers to adopt four-stage temperature control, carrying out vacuum sizing by 2 to 4 serial die heads on a vacuum sizing table, and then carrying out processes of water cooling, air drying, crawling traction, cutting and the like to form a stone-plastic composite board. The stone-plastic composite board extrusion molding process disclosed by the invention is low in equipment investment, low in energy consumption and low in pollution, has the advantages of PVC plasticizing uniformity, difficulty in decomposition, high production efficiency, low defective rate, long screw service life and the like, and provides a matured and reliable extrusion molding process for the stone-plastic composite board.

Description

technical field [0001] The invention belongs to the field of extrusion of plastic plates, and in particular relates to an extrusion molding process of stone-plastic composite plates. Background technique [0002] The stone-plastic composite board is a new type of high-performance, high-value-added board that uses waste rock ore powder, waste tailings powder, and industrial solid waste as the main raw materials. After proper treatment, it can be combined with various plastics through different composite methods Composite materials, developed on the basis of wood-plastic composite board production, are considered to be an international innovative technology in the 21st century and the most fashionable new home decoration building materials. A professional manufacturer of stone-plastic floor materials. However, in the actual production process, there are often problems that the waste and resin cannot be uniformly plasticized, the produced products are prone to breakage, the ra...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/06C08L33/04C08L23/28C08K11/00C08K5/09B29C67/24
CPCC08L27/06B29C67/243C08L2201/02C08L2205/035C08L91/06C08L33/04C08L23/286C08K11/005C08K5/09
Inventor 袁新强曾晨艾桃桃刘林森蒋鹏邓志峰邹祥宇
Owner SHAANXI SCI TECH UNIV
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