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Nano polyvinyl chloride (PVC) injection material and production method thereof

A manufacturing method and nano-technology, applied in the field of nano-PVC injection molding materials and manufacturing, can solve the problems of heat resistance and aging resistance to be improved, and achieve the effect of good surface gloss, bright surface and low water content of materials

Inactive Publication Date: 2018-08-10
重庆鸽牌电工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toughness, heat resistance and aging resistance of existing PVC materials need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for manufacturing nano-PVC injection molding material, comprising the steps of:

[0024] (1) Prepare the following raw materials in parts by mass: 80 parts of injection molding grade polyvinyl chloride resin (model is SG-8), 101 parts of active nano-calcium carbonate, 1 part of anti-impact agent ACR, 3 parts of heat stabilizer (organotin), 0.3 parts of lubricant, 2 parts of DOP, 2 parts of MMA / acrylate copolymer;

[0025] (2) Add the raw materials in step (1) to the kneader for stirring, and generate heat through the friction between the material itself and the cylinder, and the stirring temperature reaches 120°C and keeps for 15 minutes;

[0026] (3) Blowing when cold mixing and stirring and cooling to 55° C., the stirring speed is lower than the stirring speed in step (2);

[0027] (4) Extrude and granulate through a conical twin-screw extruder at 160°C. During the extrusion process, the twin-screw equipment needs to be dehumidified by a vacuum dehumidificat...

Embodiment 2

[0029] (1) Prepare the following raw materials in parts by mass: 90 parts of injection molding grade polyvinyl chloride resin (model SG-8), 10 parts of active nano-calcium carbonate, 1 part of anti-impact agent ACR, 3 parts of heat stabilizer (organotin), 0.3 parts of lubricant, 2 parts of DOP, 2 parts of MMA / acrylate copolymer;

[0030] (2) Add the raw materials in step (1) to the kneader for stirring, and generate heat through the friction between the material itself and the barrel, and the stirring temperature reaches 130°C and keeps for 10 minutes;

[0031] (3) Blowing when cold mixing and stirring and cooling to 45° C., the stirring speed is lower than that in step (2);

[0032] (4) Extrude and granulate through a conical twin-screw extruder at 180°C. During the extrusion process, the twin-screw equipment needs to be dehumidified by a vacuum dehumidification system.

Embodiment 3

[0034] (1) Prepare the following raw materials in parts by mass: 110 parts of injection molding grade polyvinyl chloride resin (model SG-8), 25 parts of active nano-calcium carbonate, 1.5 parts of anti-impact agent ACR, heat stabilizer (organic tin) 4 parts 0.8 parts of lubricant, 4 parts of DOP, 3 parts of MMA / acrylate copolymer;

[0035] (2) Add the raw materials in step (1) to the kneader for stirring, and generate heat through the friction between the material itself and the cylinder, and the stirring temperature reaches 145°C and keeps for 15 minutes;

[0036] (3) Blowing when cold mixing and stirring and cooling to 55° C., the stirring speed is lower than the stirring speed in step (2);

[0037] (4) Extrude and granulate through a conical twin-screw extruder at 180°C. During the extrusion process, the twin-screw equipment needs to be dehumidified by a vacuum dehumidification system.

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PUM

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Abstract

The invention belongs to the field of high-molecular compounds, and discloses a nano polyvinyl chloride (PVC) injection material, which is prepared from the following raw materials in parts by weight:80-120 parts of PVC resin, 10-25 parts of active nano calcium carbonate, 1-1.5 parts of anti-impact agent, 3-4 parts of heat stabilizer, 0.3-0.8 part of lubricant, 2-4 parts of dioctyl phthalate (DOP) and 2-3 parts of PVC processing aids. The invention also discloses a manufacturing method of the nano PVC injection material; the method comprises the following steps: (1) preparing the raw materials; (2) adding the raw materials obtained in the step (1) into a kneading machine for mixing, heating up to 120-145 DEG C, and maintaining the temperature for 10-15 minutes; (3) carrying out cold blending at the low speed, cooling the mixture to 45-55 DEG C and discharging; (4) molding by means of extruding granulation at 160-180 DEG C. After the scheme is adopted, the produced nano PVC injection material has the characteristics of being good in toughness, excellent in heat resistance and aging resistance, good in insulating property, simple in processing technique, and the like, and has highercost performance.

Description

technical field [0001] The invention relates to the field of polymer compound compositions, in particular to a nano-PVC injection molding material and a manufacturing method. Background technique [0002] PVC material is polyvinyl chloride, which is one of the largest plastic products in the world. It is cheap and widely used. The polyvinyl chloride resin is white or light yellow powder. Different additives can be added according to different uses, and PVC plastics can exhibit different physical and mechanical properties. Adding an appropriate amount of plasticizer to polyvinyl chloride resin can make a variety of hard, soft and transparent products. Polyvinyl chloride has good electrical insulation properties, can be used as low-frequency insulation materials, and its chemical stability is also good. The toughness, heat resistance and aging resistance of existing PVC materials all need to be improved. Contents of the invention [0003] The purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L33/04C08L33/12C08K3/26C08K5/12C08K5/57
CPCC08K2003/265C08K2201/011C08L27/06C08L2201/08C08L2205/02C08L2205/03C08L33/04C08L33/12C08K3/26C08K5/12C08K5/57
Inventor 徐涪灵
Owner 重庆鸽牌电工材料有限公司
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