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Trenchless modified polyvinyl chloride pipe and preparation method thereof

A polyvinyl chloride, non-excavation technology, applied in the direction of rigid pipes, pipes, mechanical equipment, etc., can solve the problems of weather resistance, impact strength ductility, poor environmental protection, etc., to achieve strong weather resistance, reduce use costs, high The effect of impact strength

Inactive Publication Date: 2013-09-04
HEBEI WANDE PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of relatively brittleness, weather resistance, impact strength, ductility and poor environmental protection of existing non-excavation PVC pipes, the present invention aims to provide A modified polyvinyl chloride pipe for non-excavation and its preparation method

Method used

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  • Trenchless modified polyvinyl chloride pipe and preparation method thereof
  • Trenchless modified polyvinyl chloride pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Organotin 1.0

[0048] Acrylic 8

[0049] Silane 0.5

[0050] Dioctyl 0.8

[0051] Titanium dioxide 0.2

[0052] Carbon black 0.1

[0053] 1.2 Preparation method of polyvinyl chloride pipe:

[0054] (1) First heat up and mix the polyvinyl chloride resin;

[0055] (2) When the temperature rises to 45°C, add an organotin stabilizer and continue to heat mix;

[0056] (3) When the temperature rises to 85°C, add modifier, titanium dioxide, and colorant, and continue to heat mix;

[0057] (4) When the temperature rises to 105°C, add dioctyl ester and coupling agent, and continue to heat mix;

[0058] (5) When the heat is mixed to 110°C, keep it for 10 seconds;

[0059] (6) Then cool down and mix to 45°C and discharge;

[0060] (7) The mixture enters the twin-screw extruder for extrusion molding. The host current of the twin-screw extruder is 70A, 18 revolutions, the feeding motor is 70 revolutions, the cavity pressure is >25MPa, and the melt torque is 60%. The...

Embodiment 2

[0065] Organotin 1.5

[0066] Chlorinated polyethylene 9

[0067] Silane 1.2

[0068] Dioctyl 1.5

[0069] Titanium dioxide 0.8

[0070] Carbon black 0.5

[0071] 2.2 Preparation method of polyvinyl chloride pipe:

[0072] (1) First heat up and mix the polyvinyl chloride resin;

[0073] (2) When the temperature rises to 45°C, add an organotin stabilizer and continue to heat mix;

[0074] (3) When the temperature rises to 85°C, add modifier, titanium dioxide, and colorant, and continue to heat mix;

[0075] (4) When the temperature rises to 105°C, add dioctyl ester and coupling agent, and continue to heat mix;

[0076] (5) When the heat is mixed to 110°C, keep it for 60 seconds;

[0077] (6) Then cool down and mix to 45°C and discharge;

[0078](7) The mixture enters the twin-screw extruder for extrusion molding. The host current of the twin-screw extruder is 70A, 18 revolutions, the feeding motor is 70 revolutions, the cavity pressure is >25MPa, and the melt tor...

Embodiment 3

[0083] Organotin 1.2

[0084] Methacrylic acid-butadiene-styrene copolymer 8.4

[0085] Silane 0.9

[0086] Dioctyl 1.2

[0087] Titanium dioxide 0.4

[0088] Carbon black 0.2

[0089] 3.2 Preparation method of polyvinyl chloride pipe:

[0090] (1) First heat up and mix the polyvinyl chloride resin;

[0091] (2) When the temperature rises to 45°C, add an organotin stabilizer and continue to heat mix;

[0092] (3) When the temperature rises to 85°C, add modifier, titanium dioxide, and colorant, and continue to heat mix;

[0093] (4) When the temperature rises to 105°C, add dioctyl ester and coupling agent, and continue to heat mix;

[0094] (5) When heat mixing reaches 110°C, keep it for 30 seconds;

[0095] (6) Then cool down and mix to 45°C and discharge;

[0096] (7) The mixture enters the twin-screw extruder for extrusion molding. The host current of the twin-screw extruder is 70A, 18 revolutions, the feeding motor is 70 revolutions, the cavity pressure is >2...

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Abstract

The invention discloses a trenchless modified polyvinyl chloride pipe and a preparation method thereof. The polyvinyl chloride pipe comprises the following raw materials by weight: 90 to 110 parts of polyvinyl chloride, 1.0 to 1.5 parts of organotin, 8 to 9 parts of modifying agent, 0.5 to 1.2 parts of coupling agent, 0.8 to 1.5 parts of dioctyl-phthalate, 0.2 to 0.8 part of titanium dioxide and 0.1 to 0.5 part of coloring agent. The preparation method for the polyvinyl chloride pipe comprises the following steps: (1) heating and hot-mixing polyvinyl chloride resin, (2) inputting an organotin stabilizer at the temperature of 45 DEG C, (3) inputting the modifying agent, the titanium dioxide and the coloring agent at the temperature of 85 DEG C, (4) inputting the dioctyl-phthalate and the coupling agent at the temperature of 105 DEG C, (5) keeping for 10 to 60 seconds when hot-mixing to the temperature of 110 DEG C, (6) then cold-mixing to the temperature of 45 DEG C, and discharging, (7) putting the mixed materials into a double screw extruding machine for extrusion molding, (8) then entering a sizing box, spraying and cooling, detecting the wall thickness by ultrasonic wave, jet-printing and identifying, length-fixing and cutting, and gaining a finished pipe. The polyvinyl chloride pipe, provided by the invention, is high in impact resistant strength and strong in weatherability, and has certain tensile resistant strength.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a non-excavation modified polyvinyl chloride pipe and a preparation method thereof. Background technique [0002] Trenchless technology refers to a new construction technology for laying, replacing and repairing various underground pipelines under the condition of excavating a very small part of the surface (generally referring to small area excavation at the entrance and exit) by means of oriented and directional drilling. , has little disturbance to the surface, so it has a high socio-economic effect. It mainly includes technical methods such as horizontal directional drilling, pipe jacking, micro-tunneling, pipe bursting, and impact. This technology originated in the 1970s and was introduced into my country in the 1990s. At present, it is widely used in the construction of new pipelines and the repair of old pipelines in the fields of water supply, drainage, electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08K13/02C08K5/57C08K5/10C08K3/22C08K5/54C08K3/04B29C47/92F16L9/12B29C48/92
CPCB29C48/0022B29C48/09B29C48/40B29C48/92B29C2948/92647B29C2948/92923
Inventor 张万桥
Owner HEBEI WANDE PIPE IND
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