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Decomposition control-based hydromagnesite high efficiency fire retardant and preparation method thereof

A hydromagnesite and flame retardant technology is applied in the field of preparation of hydromagnesite and PVC compound flame retardant, which can solve the problems of weak improvement of processing performance and mechanical performance, and achieve low cost and good flame retardant function. Effect

Inactive Publication Date: 2016-02-24
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, silane coupling agent and titanate coupling agent are used to treat hydromagnesite, but the improvement of processing performance and mechanical properties is often very weak.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Formula: 30 parts of polyvinyl chloride, 2 parts of calcium zinc stabilizer, 3 parts of chlorinated paraffin, 20 parts of hydromagnesite.

[0031] Mix polyvinyl chloride, calcium zinc stabilizer, and chlorinated paraffin with a high-speed mixer according to the ratio to obtain a polyvinyl chloride mixture, and then use a blast oven or a vacuum oven to fully dry it, and the dried mixture (polyvinyl chloride) Mechanically mix with hydromagnesite to obtain hydromagnesite high-efficiency flame retardant, and then crush it into powder with a pulverizer. Then the prepared hydromagnesite high-efficiency flame retardant and PP were mixed and banburyed in a certain proportion. The temperature of the banbury mixer was set at 190°C, the speed was 20r / min, and the banbury was mixed for 5 minutes. The obtained samples were processed by a flat vulcanizer. Tablets are cut into tensile specimens and oxygen index test specimens, and their mechanical properties and oxygen index are measu...

Embodiment 2

[0033] Formula: 25 parts of polyvinyl chloride, 2 parts of calcium zinc stabilizer, 3 parts of chlorinated paraffin, 25 parts of hydromagnesite, 50 parts of polypropylene (PP)

[0034] Mix polyvinyl chloride, calcium zinc stabilizer, and chlorinated paraffin with a high-speed mixer according to the ratio to obtain a polyvinyl chloride mixture, and then use a blast oven or a vacuum oven to fully dry it, and the dried mixture (polyvinyl chloride) Mechanically mix with hydromagnesite to obtain hydromagnesite high-efficiency flame retardant, and then crush it into powder with a pulverizer. Then the prepared hydromagnesite high-efficiency flame retardant and PP were mixed and banburyed in a certain proportion. The temperature of the banbury mixer was set at 190°C, the speed was 20r / min, and the banbury was mixed for 5 minutes. The obtained samples were processed by a flat vulcanizer. Tablets are cut into tensile specimens and oxygen index test specimens, and their mechanical proper...

Embodiment 3

[0036] Formula: 20 parts of polyvinyl chloride, 2 parts of calcium zinc stabilizer, 3 parts of chlorinated paraffin, 30 parts of hydromagnesite, 50 parts of polypropylene (PP)

[0037] Mix polyvinyl chloride, calcium zinc stabilizer, and chlorinated paraffin with a high-speed mixer according to the ratio to obtain a polyvinyl chloride mixture, and then use a blast oven or a vacuum oven to fully dry it, and the dried mixture (polyvinyl chloride) Mechanically mix with hydromagnesite to obtain hydromagnesite high-efficiency flame retardant, and then crush it into powder with a pulverizer. Then the prepared hydromagnesite high-efficiency flame retardant and PP were mixed and banburyed in a certain proportion. The temperature of the banbury mixer was set at 190°C, the speed was 20r / min, and the banbury was mixed for 5 minutes. The obtained samples were processed by a flat vulcanizer. Tablets are cut into tensile specimens and oxygen index test specimens, and their mechanical proper...

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PUM

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Abstract

The invention discloses a decomposition control-based hydromagnesite high efficiency fire retardant and a preparation method thereof, and belongs to the fields of inorganic fire retardation and organic synergistic fire retardation. The decomposition control-based hydromagnesite high efficiency fire retardant comprises, by mass, 20-30 parts of hydromagnesite (HM), 20-30 parts of polyvinyl chloride (PVC), 2 parts of a calcium-zinc heat stabilizer and 3 parts of chlorinated paraffin. The action principle of the fire retardant is that gaseous HCl generated after decomposition of the PVC promotes decomposition of the HM and the ratio and the structure are regulated to realize good decomposition performance of the HM in the combustion process, so the fire retardant prepared through the method has high efficiency, and the method has the advantages of low production cost, strong operability and obvious action effect.

Description

technical field [0001] The invention relates to a preparation method of hydromagnesite and PVC compound flame retardant, which belongs to the field of inorganic flame retardant and organic synergistic flame retardant. Background technique [0002] As an inorganic flame retardant, hydromagnesite has the advantages of non-toxic, non-volatile, good stability, economical and environmental protection, and abundant resources. Hydromagnesite has excellent ability to inhibit hydrogen chloride and excellent smoke suppression performance. [0003] Hydromagnesite is a kind of natural basic magnesium carbonate, which is a kind of inorganic compound with strong polarity. Due to the strain in the crystal, the surface of the crystal is positively charged and has hydrophilicity, and the crystal grain tends to secondary aggregation. In this way, even if it is dried, there is non-negligible moisture in the crystal. [0004] Although hydromagnesite as a flame retardant has the advantages of ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/00C08K3/26C08K5/098C08L23/12
Inventor 李锦春何俊杰张鑫
Owner CHANGZHOU UNIV
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