Inflaming-retarding and smoke-suppressing PVC (polyvinyl chloride) pipe material and preparation method thereof

A PVC resin and flame-retardant technology, which is applied in the field of flame-retardant and smoke-suppressing PVC drainage pipe materials and its preparation, can solve problems such as the limitation of application range, and achieve excellent mechanical properties and flame-retardant and smoke-suppressing properties.

Active Publication Date: 2014-05-14
HENAN LIANSU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the event of a fire, a large number of people died due to smoke suffocation, which limits the application range of PVC to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mg(OH) 2 First use titanate coupling agent NDZ-311 with a mass fraction of 2% for surface treatment, Sb 2 o 3 The titanate coupling agent KR-38S with a mass fraction of 2% was used for surface treatment. Then the surface treated Mg(OH) 2 with Sb 2 o 3 Composite flame retardants are prepared by mixing in a weight ratio of 2:1. The composite flame retardant and PVC resin are mixed according to the weight ratio of 2.5:97.5 in a hot mixer at 100°C to obtain a mixture. The mixture is melted and blended by a single-screw extruder, shaped, and finally cooled and shaped to obtain a high-quality product. Flame retardant PVC drain pipe material.

Embodiment 2

[0024] Mg(OH) 2 First use titanate coupling agent NDZ-311 with a mass fraction of 2% for surface treatment, Sb 2 o 3 The titanate coupling agent HY-101 with a mass fraction of 2% was used for surface treatment. Then the surface treated Mg(OH) 2 with Sb 2 o 3 Composite flame retardants are prepared by mixing in a weight ratio of 2:1. The composite flame retardant and PVC resin are mixed according to the weight ratio of 2.5:97.5 in a hot mixer at 100°C to obtain a mixture. The mixture is melted and blended by a single-screw extruder, shaped, and finally cooled and shaped to obtain a high-quality product. Flame retardant PVC drain pipe material.

Embodiment 3

[0026] Mg(OH) 2 First, the titanate coupling agent NDZ-311 with a mass fraction of 2% was used for surface treatment, and the ZnO surface was treated with a silane coupling agent KH-550 with a mass fraction of 2%. Then the surface treated Mg(OH) 2 It is mixed with ZnO at a weight ratio of 2:1 to prepare a composite flame retardant. The composite flame retardant and PVC resin are mixed according to the weight ratio of 2.5:97.5 in a hot mixer at 100°C to obtain a mixture. The mixture is melted and blended by a single-screw extruder, shaped, and finally cooled and shaped to obtain a high-quality product. Flame retardant PVC drain pipe material.

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PUM

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Abstract

The invention belongs to the technical field of plastic pipes, and discloses an inflaming-retarding and smoke-suppressing PVC (polyvinyl chloride) pipe material and a preparation method thereof. A fire retardant Mg(OH)2 is subjected to surface treatment by adopting a special coupling agent, and is prepared into a compound fire retardant together with a modified inflaming-retarding additive, thus due to cooperation of the fire retardant Mg(OH)2 and the modified inflaming-retarding additive, the compound fire retardant can be prepared into a PVC drainage pipe material which is more excellent in processability, mechanical property and inflaming-retarding and smoke-suppressing properties. According to the preparation method disclosed by the invention, black smoke and toxic gases released during combustion of the PVC pipe material are greatly reduced, and a large quantity of casualties caused by smoke asphyxia in a fire accident are reduced.

Description

technical field [0001] The invention belongs to the technical field of plastic pipes, and in particular relates to a flame-retardant and smoke-suppressing PVC drainage pipe material and a preparation method thereof. Background technique [0002] The raw material polyvinyl chloride (PVC) used in the PVC-U drainage pipe is a self-extinguishing material, but PVC will emit a large amount of black smoke and toxic gases when burned. Such as HCl, CO, a small amount of phosgene, benzene, naphthalene and other aromatic compounds. In the event of a fire, a large number of people died due to smoke suffocation, which limits the application range of PVC to a certain extent. At the same time, the addition of plasticizers, lubricants and other additives during the processing of PVC-U drainage pipes will also reduce the flame retardancy and smoke suppression performance of the material. Therefore, research on smoke suppression and flame retardant modification of PVC-U drainage pipes Gaini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K9/04C08K3/22C08K9/06
Inventor 代营伟李锦松
Owner HENAN LIANSU IND
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