Preparation process of transparent PVC (polyvinyl chloride) cold-bending electrical conduit

A technology for the preparation of electrical bushings, which is applied in the field of preparation of transparent PVC electrical bushings, can solve the problems of high cost of ingredients, complex ingredients, and complicated processes, and achieve the effect of low cost of ingredients and simple ingredients

Pending Publication Date: 2021-09-28
NANYANG SENYUAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN109825009A discloses a material composition of a PVC electrical bushing and its manufacturing method. In the ingredients, brighteners and organic toners need to be specially added to make the prepared PVC electrical bushings in a transparent state, so the ingredients are complicated. And the cost of ingredients is high, and the ingredients cooled and stirred by the cooling mixer need to be put into the granulator for granulation, so the process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation process of a transparent PVC cold-formed electrical casing, comprising the following steps:

[0027] (1) Mix PVC resin powder, flaky methyl tin stabilizer, flaky polyethylene wax, and granular stearic acid in a mass ratio of 100:1.2:0.8:0.8 to obtain a PVC resin mixture, of which PVC The type of resin powder is S-1000 or S-5;

[0028](2) Add the PVC resin mixture obtained in step (1) into a high-speed mixer, stir and mix at a high speed for 23 minutes under heating conditions, and the stirring speed of the high-speed mixer is 800r / min, specifically, the PVC resin in the high-speed mixer The temperature of the mixture rises from room temperature to 147°C, and the time it takes for the temperature to rise from room temperature to 147°C is 23 minutes, that is, high-speed stirring and mixing for 23 minutes. During the heating and stirring process, the raw material components in the PVC resin mixture collide, rub and Melt and mix;

[0029] (3) Transfer the PV...

Embodiment 2

[0034] A preparation process of a transparent PVC cold-formed electrical casing, comprising the following steps:

[0035] (1) Mix PVC resin powder, flaky methyl tin stabilizer, flaky polyethylene wax, and granular stearic acid in a mass ratio of 100:1.2:0.8:0.8 to obtain a PVC resin mixture, of which PVC The type of resin powder is S-1000 or S-5;

[0036] (2) Add the PVC resin mixture obtained in step (1) into a high-speed mixer, stir and mix at a high speed for 25 minutes under heating conditions, and the stirring speed of the high-speed mixer is 800r / min, specifically, the PVC resin in the high-speed mixer The temperature of the mixture is raised from room temperature to 145°C, and the time it takes for the temperature to rise from room temperature to 145°C is 25 minutes, that is, high-speed stirring and mixing for 25 minutes. During the heating and stirring process, the raw materials in the PVC resin mixture collide, rub and Melt and mix;

[0037] (3) Transfer the PVC res...

Embodiment 3

[0042] A preparation process of a transparent PVC cold-formed electrical casing, comprising the following steps:

[0043] (1) Mix PVC resin powder, flaky methyl tin stabilizer, flaky polyethylene wax, and granular stearic acid in a mass ratio of 100:1.2:0.8:0.8 to obtain a PVC resin mixture, of which PVC The type of resin powder is S-1000 or S-5;

[0044] (2) Add the PVC resin mixture obtained in step (1) into a high-speed mixer, stir and mix at a high speed for 27 minutes under heating conditions, and the stirring speed of the high-speed mixer is 800r / min, specifically, the PVC resin in the high-speed mixer The temperature of the mixture is raised from room temperature to 143°C, and the time it takes for the temperature to rise from room temperature to 143°C is 27 minutes, that is, high-speed stirring and mixing for 27 minutes. During the heating and stirring process, the raw materials in the PVC resin mixture collide, rub and Melt and mix;

[0045] (3) Transfer the PVC res...

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PUM

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Abstract

The invention discloses a preparation process of a transparent PVC (polyvinyl chloride) cold-bending electrical conduit. The preparation process of the transparent PVC cold-bending electrical conduit comprises the following steps of (1) mixing PVC resin powder, a methyl tin stabilizer, polyethylene wax and stearic acid to obtain a PVC resin mixture; (2) adding the PVC resin mixture into a high-speed mixer, heating, and stirring and mixing for 23 to 27 minutes at a high speed; (3) transferring the PVC resin mixture heated to 143 to 147 DEG C into a low-speed mixer, cooling, and stirring and mixing for 14 to 16 minutes at a low speed; (4) transferring the PVC resin mixture cooled to 43 to 47 DEG C into a double-screw extruder for high-temperature extrusion, mulling and homogenization; (5) transferring the PVC resin mixture extruded from the double-screw extruder into a PVC electrical conduit extrusion die, and extruding to form a die; and (6) carrying out cooling molding on the demolded PVC resin electrical conduit extruded from the PVC electrical conduit extrusion mold under vacuum, then carrying out traction, cutting and packaging processes, and then carrying out inspection and warehousing. According to the preparation process of the transparent PVC cold-bending electrical conduit provided by the invention, the cost is low, the prepared PVC cold-bending electrical conduit can be transparent without adding a brightener and an organic toner into ingredients, and granulation is not needed.

Description

technical field [0001] The invention belongs to the technical field of preparation of transparent PVC electrical bushings, and in particular relates to a preparation process of transparent PVC cold-bent electrical bushings. Background technique [0002] PVC electrical bushing is a kind of insulating pipe made of PVC material. The performance of PVC electrical bushing is stable. Even at high or low temperature, it can maintain its own good properties without deformation or fission. One of the commonly used insulating materials. PVC electrical bushing has the advantages of strong pressure resistance, corrosion resistance, pest control, good flame retardant performance, and strong insulation performance. [0003] Chinese patent CN109825009A discloses a material composition of a PVC electrical bushing and its manufacturing method. In the ingredients, brighteners and organic toners need to be specially added to make the prepared PVC electrical bushings in a transparent state, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/09B29C48/92B29B9/06C08L27/06C08L23/06C08K5/57C08K5/09B29K27/06
CPCB29C48/022B29C48/09B29C48/92B29B9/06C08L27/06B29K2027/06B29C2948/92704C08L2203/18C08L2201/10C08L23/06C08K5/57C08K5/09
Inventor 冯玉洋尚玲张帆冯海波冯玉冉张旭谢海全曹书芝张苗吕晓东张丛冯玉芳耿金金
Owner NANYANG SENYUAN PLASTIC
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