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A kind of high fireproof PVC-U pipe and preparation method thereof

A technology of PVC-U and compound, which is applied in the field of high fireproof PVC-U pipe and its preparation, can solve the problem of reducing the mechanical properties and hydrostatic performance of PVC-U pipe, adding less flame retardant and smoke suppression agent, and reducing the smoke suppression effect To achieve the effects of widening the scope of application, high safety in use, and improving the performance of flame retardancy and smoke suppression

Active Publication Date: 2016-08-24
联塑市政管道(河北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, flame retardant and smoke suppressant are added to some PVC pipes to improve the flame retardant performance of PVC-U pipes, but the flame retardant effect is still low, especially the smoke suppression effect is often worse, because the flame retardant suppresses The addition of smoke agent will significantly reduce the mechanical properties and hydrostatic properties of PVC-U pipes. If too much flame retardant is added, the PVC-U pipe products will not meet the requirements of relevant standards. a bit less

Method used

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  • A kind of high fireproof PVC-U pipe and preparation method thereof
  • A kind of high fireproof PVC-U pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high fireproof PVC-U pipe formula is: 100 parts of PVC resin, 4 parts of calcium-zinc composite stabilizer, 0.8 parts of processing aid LPA-40, 3 parts of MBS impact modifier, 3 parts of zinc-molybdenum-silicon compound, 20 parts of nano aluminum hydroxide, 2 parts of lubricant chlorinated paraffin, 1.2 parts of stearic acid 1840, 2 parts of titanium dioxide, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

[0035] After the components are prepared according to the mass parts, put them into the high mixer and stir. The stirring temperature of the high mixer is set at 115°C. Set at 40 ℃ discharge. Then put the material into the twin-screw extruder for plasticization and molding, wherein the temperature of the barrel of the twin-screw extruder is set to 170°C and 165°C respectively, and the molding temperature of the mold is respectively set to 170°C and 180°C; Prepare high fireproof PVC-U pipe.

[0036] The obtained PVC-U pipe is tested according to...

Embodiment 2

[0038] A high fireproof PVC-U pipe formula is: 100 parts of PVC resin, 3 parts of organotin stabilizer, 1 part of processing aid PA-40, 3 parts of ACR impact modifier, 6 parts of zinc molybdenum silicon compound, 25 parts Parts of nano aluminum hydroxide, 2 parts of lubricant chlorinated paraffin, 1.4 parts of stearic acid 1840, 2 parts of titanium dioxide, 5 parts of calcium carbonate, 1.5 parts of titanate coupling agent.

[0039] After the components are prepared according to the mass parts, put them into the high mixer and stir. The stirring temperature of the high mixer is set at 120°C. Set at 45 ℃ discharge. Then put the material into the twin-screw extruder for plasticization and molding, wherein the temperature of the barrel of the twin-screw extruder is set to 175°C and 170°C respectively, and the molding temperature of the mold is set to 175°C and 185°C respectively; Prepare high fireproof PVC-U pipe.

[0040] The obtained PVC-U pipe is tested according to GB / T 100...

Embodiment 3

[0042] A high fireproof PVC-U pipe formula is: 100 parts of PVC resin, 5 parts of organotin stabilizer, 5 parts of processing aid PA-40, 5 parts of ACR impact modifier, 10 parts of zinc molybdenum silicon compound, 30 parts Parts of nano aluminum hydroxide, 5 parts of lubricant chlorinated paraffin, 1.4 parts of stearic acid 1840, 3 parts of titanium dioxide, 25 parts of calcium carbonate, 1.5 parts of titanate coupling agent.

[0043] After the components are prepared according to the mass parts, put them into the high mixer and stir. The stirring temperature of the high mixer is set at 120°C. Set at 45 ℃ discharge. Then put the material into the twin-screw extruder for plasticization and molding, wherein the temperature of the barrel of the twin-screw extruder is set to 175°C and 170°C respectively, and the molding temperature of the mold is set to 175°C and 185°C respectively; Prepare high fireproof PVC-U pipe.

[0044] The obtained tubes are tested according to GB / T 1000...

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Abstract

The invention relates to a highly fireproof PVC-U pipe and a preparation method thereof. According to the highly fireproof PVC-U pipe, a compound of a zinc-molybdenum-silicon composite and nanometer aluminum hydroxide powder is adopted as a flame-retardant smoke suppressant, wherein the mass ratio of the zinc-molybdenum-silicon composite to nanometer aluminum hydroxide powder is (1: 5) to (2: 1); and the flame-retardant smoke suppressant accounts for 15%-30% of the highly fireproof PVC-U pipe. By the PVC-U pipe, the balance between the flame-retardant smoke-suppressing property and the physical and mechanical properties of the highly fireproof PVC-U pipe is solved, the highly fireproof PVC-U pipe has excellent flame-retardant smoke-suppressing property and physical and mechanical properties which meet standard requirements and the application range and safety of the PVC-U pipe are substantially increased.

Description

technical field [0001] The invention relates to the field of PVC-U pipes, in particular to a high-fireproof PVC-U pipe and a preparation method thereof. Background technique [0002] Rigid polyvinyl chloride (PVC-U) pipe has good acid and alkali resistance, strong tensile and compressive properties, certain flexibility, long service life, and easy installation. It is widely used in municipal water supply and drainage, agricultural irrigation, residential commercial construction industry. However, during the burning process of PVC, a large amount of corrosive and toxic gas and smoke will be produced. Once a fire occurs, the dense smoke containing a large amount of corrosive gas will pose a fatal threat to people. Therefore, the flame retardant and smoke suppression technology of PVC pipes has also received more and more attention. . At present, flame retardant and smoke suppressant are added to some PVC pipes to improve the flame retardant performance of PVC-U pipes, but th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/10C08K9/06C08K9/04C08K3/34C08K3/22
CPCC08K2003/2241
Inventor 李统一周平
Owner 联塑市政管道(河北)有限公司