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Antidrip flame-retardant PVC-U (unplasticized polyvinyl chloride) pipe and preparation method thereof

A PVC-U, anti-dripping technology, applied in the field of PVC pipes, to achieve good smoke suppression effect and excellent flame retardant effect

Inactive Publication Date: 2015-02-18
南京联塑科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no research on the application of intumescent flame retardants in PVC-U pipes to improve the flame retardancy and smoke suppression performance of the pipes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A anti-drip flame-retardant PVC-U pipe formula is: 100 parts of PVC resin, 3 parts of calcium-zinc composite stabilizer, 1.5 parts of processing aid PA41, 3 parts of ACR impact modifier, silane coupling agent modified expansion Type flame retardant 16 parts (pentaerythritol: ammonium polyphosphate: melamine is 5:2:1), chlorinated paraffin 1.5 parts, titanium dioxide 0.8 parts, calcium carbonate 30 parts. After the above-mentioned components are prepared according to mass parts, they are put into a high-speed hot mixer for dispersion and stirring, and the stirring temperature is set at 115°C; Discharged into the hopper and extruded and molded by a twin-screw extruder; the temperature of the barrel of the twin-screw extruder was set to 170°C and 165°C respectively, and the molding temperature was set to 170°C and 185°C respectively.

[0035] The obtained PVC-U pipe is tested according to GB / T 10002.1, GB / T 5836.1 and CAN / ULC-S102.2-10 standards. Requirements, and at the ...

Embodiment 2

[0037] A anti-drip flame retardant PVC-U pipe formula is: 100 parts of PVC resin, 2 parts of organotin stabilizer, 1.5 parts of processing aid PA41, 3 parts of ACR impact modifier, modified by titanate coupling agent Intumescent flame retardant 13.5 parts (pentaerythritol: ammonium polyphosphate: melamine is 9:3:1.5), chlorinated paraffin 1.5 parts, titanium dioxide 0.8 parts, calcium carbonate 25 parts. After the above-mentioned components are prepared according to the mass parts, put them into a high-speed hot mixer for dispersion and stirring, and set the stirring temperature at 115°C; Discharged into the hopper through twin-screw extruder extrusion molding, the temperature of the barrel of the twin-screw extruder was set at 170°C and 165°C respectively, and the molding temperature was set at 170°C and 180°C respectively.

[0038] The obtained PVC-U pipe is tested according to GB / T 10002.1, GB / T 5836.1 and CAN / ULC-S102.2-10 standards, and the comprehensive performance of PV...

Embodiment 3

[0040]A anti-drip flame retardant PVC-U pipe formula is: 100 parts of PVC resin, 1.5 parts of organotin stabilizer, 1 part of processing aid PA41, 2 parts of ACR impact modifier, silane coupling agent modified expansion type 20 parts of flame retardant (pentaerythritol: ammonium polyphosphate: melamine is 12:5:3), 1.5 parts of chlorinated paraffin, 0.9 parts of titanium dioxide, 20 parts of calcium carbonate. After the above-mentioned components are prepared according to mass parts, they are put into a high-speed hot mixer for dispersion and stirring, and the stirring temperature is set at 115°C; Discharged into the hopper through twin-screw extruder extrusion molding, the temperature of the barrel of the twin-screw extruder was set at 170°C and 165°C respectively, and the molding temperature was set at 170°C and 190°C respectively.

[0041] The obtained PVC-U pipe is tested according to GB / T 10002.1, GB / T 5836.1 and CAN / ULC-S102.2-10 standards, and the comprehensive performan...

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PUM

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Abstract

The invention relates to an antidrip flame-retardant PVC-U (unplasticized polyvinyl chloride) pipe and a preparation method thereof. The PVC-U pipe is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 1-20 parts of intumescent flame retardant, 0.5-6 parts of impact modifier, 0.5-6 parts of heat stabilizer, 0.5-3 parts of processing assistant, 0.5-4 parts of lubricant, 0.01-5 parts of pigment and 1-40 parts of calcium carbonate. The flame propagation grade of the pipe is lower than or equal to 25, and the fuming grade is lower than or equal to 70, so the flame propagation grade and fuming grade are obviously enhanced as compared with the existing flame-retardant PVC-U pipe. The properties of the pipe conform to the requirements in GB / T10002.1 or GB / T5836.1. After the intumescent flame retardant is used in the PVC-U pipe, various properties conform to the standard requirements, and the PVC-U pipe is suitable for laying drain lines and conduits.

Description

technical field [0001] The invention relates to the field of PVC pipes, in particular to an anti-drip and flame-retardant PVC-U pipe and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is widely used in building materials, insulating materials, PVC pipes and other fields because of its good chemical stability, flame retardant and self-extinguishing properties, corrosion resistance, and wear resistance. It is currently the most widely used One of the general plastics. However, the thick smoke produced when PVC plastic is burned has a pungent smell and contains toxic gases, which will cause serious harm. Therefore, it is of great significance to improve the fire resistance of PVC products. On the one hand, the burning process of PVC pipe is the burning of the PVC pipe on fire. At the same time, the dripping of PVC material and the spread of fire along the pipe during the burning process further aggravate the fire hazard. The currently use...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/06C08K9/06C08K5/053C08K3/32C08K5/3492C08K3/26C08K9/04B29C47/92B29C48/92
CPCC08K2003/2241C08L27/06C08L2201/02C08L2203/18C08L2205/035C08L2207/53C08L33/00C08L51/00C08L91/06C08K13/06C08K5/053C08K2003/323C08K5/34922C08K2003/265
Inventor 李统一周平
Owner 南京联塑科技实业有限公司
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