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High fluidity rigid polyvinyl chloride material and preparation method thereof

A technology of rigid polyvinyl chloride and high fluidity, applied in the field of polymers, can solve problems such as high melt viscosity, poor fluidity, and high energy consumption, and achieve the effect of increasing elongation at break

Active Publication Date: 2016-02-10
湖北科迪雅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical status and deficiencies of the flow modification of rigid PVC materials, the purpose of the present invention is to propose a high-fluidity rigid PVC material and its preparation method to solve the problem of excessive melt viscosity of existing rigid PVC materials. , poor fluidity, high processing temperature, low efficiency, high energy consumption, difficult to apply in large thin-walled products and complex structural parts

Method used

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  • High fluidity rigid polyvinyl chloride material and preparation method thereof
  • High fluidity rigid polyvinyl chloride material and preparation method thereof
  • High fluidity rigid polyvinyl chloride material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 100phr polyvinyl chloride resin, 3phrADY-802, 2phr processing aid, 4phr organotin heat stabilizer, 0.6phrEBS are accurately weighed and placed in a high-speed mixer, and the equipment is turned on to increase the speed from low to high to 1100 rpm point. Stir the ingredients at high speed until the material temperature rises to 100°C and stop, put the material into the cold mixer, cool to 40°C and discharge. Put the mixture into the twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw is: 160°C / 170°C / 175°C / 180°C, the speed: 40rpm, pelletized by the die surface, and air cooled , Promptly make high fluidity hard PVC material I.

Embodiment 2

[0024] Accurately weigh 100phr polyvinyl chloride resin, 10phrADY-802, 2phr processing aid, 2phr lead salt heat stabilizer, and 1phr oxidized polyethylene in a high-speed mixer, turn on the equipment, and increase the speed from low to high to 1200 rpm. Stir the ingredients at high speed until the material temperature rises to 110°C and stop, put the material into the cold mixer, cool to 40°C and discharge. Put the mixture into the twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw is: 150°C / 165°C / 170°C / 175°C, the speed: 40rpm, pelletized by the die surface, and air-cooled , that is, the high fluidity rigid PVC material II is obtained.

Embodiment 3

[0026] 100phr polyvinyl chloride resin, 15phrADY-802, 2phr processing aid, 2phr organotin heat stabilizer, 0.3phr montanic acid ester are accurately weighed and placed in a high-speed mixer, and the equipment is turned on to increase the speed from low to high. 1000 rpm. Stir the ingredients at high speed until the material temperature rises to 100°C and stop, put the material into the cold mixer, cool to 40°C and discharge. Put the mixture into the twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw is 140°C / 160°C / 160°C / 170°C. , that is, the high fluidity rigid PVC material III is obtained.

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Abstract

The invention discloses a high-fluidity rigid polyvinyl chloride (PVC) material and a preparation method thereof. The high-fluidity rigid PVC material comprises main components of PVC resin, a solid wetting agent, a thermal stabilizing agent, a lubricating agent, a processing agent, and the like. The preparation method of the high-fluidity rigid PVC material comprises the steps: firstly, performing high-speed stirring and mixing on the components of the PVC resin, the solid wetting agent and the like, then extracting in double screws, and pelleting and forming to obtain a target material. Compared with an original PVC material, the high-fluidity rigid PVC material has the advantages of being lower in melt viscosity and higher in fluidity, improving the mechanical property of a final product to a certain extent, and keeping the thermal resistance. The high-fluidity rigid PVC material is suitable for producing a large rigid PVC thin-walled product and a complicated structure member. Meanwhile, according to the high-fluidity rigid PVC material, the processing temperature of PVC can be reduced, the processing time is shortened, the energy consumption is reduced, and the efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of polymers, and more specifically relates to a high fluidity polyvinyl chloride material and a preparation method thereof. technical background [0002] Polyvinyl chloride Poly(vinylchloride) is the first general-purpose thermoplastic to realize industrialization in the world. PVC has many excellent properties, such as: good chemical corrosion resistance, good smoke suppression, good flame retardant performance, high cost performance, etc., and is widely used in construction, transportation, electric power, packaging, medical, agricultural and other fields. However, polyvinyl chloride melt has high viscosity, poor fluidity, high requirements on processing technology and equipment, and high energy consumption, so it is difficult to realize its high performance and low cost application value in the field of large thin-walled products and complex structural parts. This is a problem that has plagued the develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B9/06B29B9/12B29C48/022B29C48/40B29C48/92B29C2948/9259B29C2948/92704
Inventor 皮红
Owner 湖北科迪雅科技有限公司