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Polyvinyl chloride foam and preparation method thereof

A technology of polyvinyl chloride foam and polyvinyl chloride resin, applied in the field of materials, can solve problems such as low electromagnetic radiation and high mechanical properties, and achieve the effects of improving mechanical properties, reducing electromagnetic radiation, and high electromagnetic shielding performance

Pending Publication Date: 2018-10-09
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the development of aerospace technology and other technologies, the existing polyvinyl chloride foam has been unable to meet the special-purpose requirements of low electromagnetic radiation and high mechanical properties in the fields of aircraft, computers, etc.

Method used

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  • Polyvinyl chloride foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In parts by mass, 10 parts of AC foaming agent, 50 parts of dioctyl phthalate, 20 parts of glycidyl phthalate, 4 parts of zinc oxide, 4 parts of stearic acid, 350 parts of calcium carbonate, mix well , make mixed solution, then add graphene, make graphene mixed solution; Wherein, the volume ratio of graphene and above-mentioned mixed solution is 5:95.

[0024] 100 parts of granular polyvinyl chloride resin are fed into a twin-screw extruder for melting, and the above-mentioned graphene mixed liquid is injected into the melting section of the extruder with a high-pressure feeder. The temperature of the melting section is 160° C. The mixture of vinyl chloride resin and graphene is mixed evenly by the rotation of the extrusion screw, and then extruded through the die; the temperature is controlled at 135°C to obtain polyvinyl chloride foam; finally, the foam plastic plate can be obtained by slow cold cutting and cutting. Cut the board into 300mm*300mm*10mm standard test re...

Embodiment 2

[0026] In terms of parts by mass, 9 parts of AC foaming agent, 55 parts of dibutyl phthalate, 25 parts of trimellitic acid triglycidyl ester, 5 parts of zinc oxide, 4 parts of stearic acid, 350 parts of calcium carbonate, Mix evenly to make a mixed solution, then add graphene to make a graphene mixed solution; wherein, the volume ratio of graphene to the above mixed solution is 10:90.

[0027] 100 parts of granular polyvinyl chloride resin are fed into a twin-screw extruder for melting, and the above-mentioned graphene mixed liquid is injected into the melting section of the extruder with a high-pressure feeder. The mixture of vinyl chloride resin and graphene is mixed evenly by the rotation of the extrusion screw, and then extruded through the die; the temperature is controlled at 150°C to obtain polyvinyl chloride foam; finally, the foam plastic plate can be obtained by slow cold cutting and cutting. Cut the board into 300mm*300mm*10mm standard test reflectivity, tensile str...

Embodiment 3

[0029] In parts by mass, 9 parts of AC blowing agent, 69 parts of dioctyl phthalate and dibutyl phthalate, 22 parts of glycidyl phthalate and triglycidyl trimellitate, oxidized 5 parts of zinc, 5 parts of stearic acid, 350 parts of calcium carbonate, mix homogeneously, make mixed solution, add graphene again, make graphene mixed solution; Wherein, the volume ratio of graphene and above-mentioned mixed solution is 20:80 .

[0030] Send 100 parts of granular polyvinyl chloride resin into a twin-screw extruder to melt, and use a high-pressure feeder to inject the above-mentioned graphene mixture into the melting section of the extruder. The mixture of vinyl resin and graphene is mixed evenly by the rotation of the extrusion screw, and then extruded through the die; the temperature is controlled at 100°C to obtain polyvinyl chloride foam; finally, the foamed plastic plate can be obtained by slow cold cutting and cutting. The board is cut into 300mm*300mm*20mm standard test reflec...

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Abstract

The invention provides polyvinyl chloride foam and a preparation method thereof. The polyvinyl chloride foam comprises 100 parts of polyvinyl chloride resin and graphene as well as also comprises mixed liquid of 9 to 10 parts of foaming agent, 50 to 69 parts of a plasticizer, 20 to 25 parts of grease, 4 to 5 parts of zinc oxide, 4 to 5 parts of stearic acid and 350 parts of calcium carbonate, wherein the volume ratio of the graphene to the mixed liquid is (5-20):(80-95). The preparation method comprises the following steps: feeding the polyvinyl chloride resin into an extruding machine and melting; injecting the graphene mixed liquid of the graphene and the mixed liquid into a melting section of the extruding machine by a high-pressure feeder; rotating through an extruding screw rod, mixing uniformly and extruding a mouth die; and controlling the temperature to obtain the polyvinyl chloride foam. The polyvinyl chloride foam can enhance the mechanical property while reducing electromagnetic radiation.

Description

technical field [0001] The invention relates to the field of materials, in particular to a polyvinyl chloride foam and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) foam is made of polyvinyl chloride resin as the main body, adding foaming agent and other additives. It has excellent comprehensive properties such as heat insulation and sound insulation. It is widely used in structural components such as aircraft, automobiles, computers, and vehicle shells. body and other fields. [0003] However, with the development of aerospace technology and other technologies, the existing polyvinyl chloride foam has been unable to meet the special-purpose requirements of low electromagnetic radiation and high mechanical properties in fields such as aircraft and computers. Contents of the invention [0004] In order to solve the above problems, the present invention adopts graphene with a unique two-dimensional sheet structure and excellent electri...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/12C08K3/22C08K5/09C08K3/26C08K3/04C08J9/10B29C47/92B29C48/92
CPCC08J9/103C08K3/04C08K3/22C08K3/26C08K5/09C08K5/12C08K13/02B29C48/92C08K2201/014C08K2003/2296C08K2003/265C08J2327/06C08J2203/04B29C2948/92704C08L27/06
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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