Special environmentally-friendly PVC bushing for motors

Abstract

The invention relates to the technical field of protection bushings, and discloses a special environmentally-friendly PVC bushing for motors. The special environmentally-friendly PVC bushing comprises, by weight, 68-80 parts of PVC, 20-32 parts of TCPE, 46-52 parts of bispentaerythritol ester or tricapryl trimellitate, 8-14 parts of calcium carbonate phosphorus stone, 6-12 parts of a stabilizer, 0.5-1.2 parts of stearate and 0.5-1 part of an antioxidant. In the invention, the PVC and the TCPE are blended and mixed to form micelles, bispentaerythritol ester or tricapryl trimellitate is adopted as a plasticizer, and the calcium carbonate phosphorus stone is adopted as a fire retardant, so the special environmentally-friendly PVC bushing has the advantages of stable performances, strong chemical corrosion resistance, smooth surface, uniform color and flattened coiling.

Description

technical field

[0001] The invention relates to the technical field of protective sleeves, in particular to an environmentally friendly PVC sleeve dedicated to motors. Background technique

[0002] Motor bushings are prone to wear and aging during long-term use, and need to be replaced frequently. Most of the motor bushings on the market are simply made of polyvinyl chloride polymers and injected at high temperatures by injection molding machines. The product has poor corrosion resistance and poor flame retardancy. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide an environment-friendly PVC bushing for motors which is resistant to chemical corrosion, smooth in surface and uniform in color.

[0004] In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

[0005] An environment-friendly PVC bushing for motors, characterized in that it com...

Examples

Embodiment 1

[0017] (1) After mixing PVC raw materials and TCPE raw materials at 105°C, melt them at 145°C and stir for 20 minutes;

[0018] (2) Add dipentaerythritol ester, calcium calcium phosphate, bisphenol A, stearate and antioxidant to the mixture obtained in step (1), stir evenly and heat to 1200 ° C, process into colloidal particles after water cooling, and carry out drying process;

[0019] (3) extruding the dried granules through an extruder;

[0020] (4) Packed in rolls after cooling.

Embodiment 2

[0022] (1) After mixing PVC raw materials and TCPE raw materials at 105°C, melt them at 140°C and stir for 15 minutes;

[0023] (2) Add trioctyl trimellitate, calcium calcium phosphate, bisphenol A, stearate and antioxidants to the mixture obtained in step (1), stir evenly and heat to 185°C, cool with water and process into gel granules, and dry them;

[0024] (3) extruding the dried granules through an extruder;

[0025] (4) Packed in rolls after cooling.

Embodiment 3

[0027] (1) Mix PVC raw materials and TCPE raw materials at 105°C, melt at 143°C, and stir for 18 minutes;

[0028] (2) Add dipentaerythritol ester, calcium calcium phosphate, bisphenol A, stearate and antioxidant to the mixture obtained in step (1), stir evenly and heat to 190 ° C, process into colloidal particles after water cooling, and carry out drying process;

[0029] (3) extruding the dried granules through an extruder;

[0030] (4) Packed in rolls after cooling.

technical field

[0001] The invention relates to the technical field of protective sleeves, in particular to an environmentally friendly PVC sleeve dedicated to motors. Background technique

[0002] Motor bushings are prone to wear and aging during long-term use, and need to be replaced frequently. Most of the motor bushings on the market are simply made of polyvinyl chloride polymers and injected at high temperatures by injection molding machines. The product has poor corrosion resistance and poor flame retardancy. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide an environment-friendly PVC bushing for motors which is resistant to chemical corrosion, smooth in surface and uniform in color.

[0004] In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

[0005] An environment-friendly PVC bushing for motors, characterized in that it com...

Examples

Embodiment 1

[0017] (1) After mixing PVC raw materials and TCPE raw materials at 105°C, melt them at 145°C and stir for 20 minutes;

[0018] (2) Add dipentaerythritol ester, calcium calcium phosphate, bisphenol A, stearate and antioxidant to the mixture obtained in step (1), stir evenly and heat to 1200 ° C, process into colloidal particles after water cooling, and carry out drying process;

[0019] (3) extruding the dried granules through an extruder;

[0020] (4) Packed in rolls after cooling.

Embodiment 2

[0022] (1) After mixing PVC raw materials and TCPE raw materials at 105°C, melt them at 140°C and stir for 15 minutes;

[0023] (2) Add trioctyl trimellitate, calcium calcium phosphate, bisphenol A, stearate and antioxidants to the mixture obtained in step (1), stir evenly and heat to 185°C, cool with water and process into gel granules, and dry them;

[0024] (3) extruding the dried granules through an extruder;

[0025] (4) Packed in rolls after cooling.

Embodiment 3

[0027] (1) Mix PVC raw materials and TCPE raw materials at 105°C, melt at 143°C, and stir for 18 minutes;

[0028] (2) Add dipentaerythritol ester, calcium calcium phosphate, bisphenol A, stearate and antioxidant to the mixture obtained in step (1), stir evenly and heat to 190 ° C, process into colloidal particles after water cooling, and carry out drying process;

[0029] (3) extruding the dried granules through an extruder;

[0030] (4) Packed in rolls after cooling.

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