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PVC flame-retardant sealing rubber strip and preparation method thereof

A technology of sealing strips and flame retardants, which is applied in the field of sealing strips and can solve the problems of sealing strips such as difficulties

Pending Publication Date: 2021-05-11
广西鑫扬金属表面处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Our company produces a large amount of fire doors every year. In order to meet the market demand, we will develop many new doors every year, and frequently put forward new requirements for PVC sealing strips, but it is very difficult to find matching sealing strips on the market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A PVC flame-retardant sealing strip, the formula is calculated by weight percentage, polyvinyl chloride resin powder 23%, expanded graphite 30%, filler 10%, plasticizer 30%, heat stabilizer 1%, flame retardant 5% Mix with processing aid 1%, 200-500 rpm, mix and shake for 3-10 minutes, reduce to low speed and stir for 1-5 minutes, after granulation, extrusion molding, cooling, cutting and sticking double-sided adhesive tape to obtain Finished PVC flame retardant sealing strip.

Embodiment 2

[0021] A PVC flame-retardant sealing strip, the formula is calculated by weight percentage, polyvinyl chloride resin powder 23%, expanded graphite 25%, filler 17%, plasticizer 30%, heat stabilizer 1%, flame retardant 3% Mix with processing aid 1%, shake at 200-500 rpm for 3-10 minutes, reduce to low speed and stir for 1-5 minutes, after granulation, extrusion molding, cooling, cutting and sticking double-sided adhesive The finished PVC flame-retardant sealing strip is obtained.

[0022] Product testing methods and standards:

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PUM

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Abstract

The invention discloses a PVC (polyvinyl chloride) flame-retardant sealing rubber strip, which belongs to the field of sealing strips and comprises the following components in percentage by mass: 10-40% of polyvinyl chloride resin powder, 10-40% of expanded graphite, 5-30% of filler, 10-40% of a plasticizer, 0.5-5% of a heat stabilizer, 2-6% of a flame retardant and 0.5-5% of a processing aid. The sealing rubber strip is good in flame retardant capacity and high in expansion rate, can meet the national 3C requirement, and assists a fireproof door in meeting the burning inspection condition. The size, the stretching rate, the hardness, the expansion rate and the like can be changed according to the structural requirements of the fireproof door.

Description

technical field [0001] The invention belongs to the field of sealing strips, and in particular relates to a PVC flame-retardant sealing strip and a preparation method thereof. Background technique [0002] Our company produces a large amount of fire doors every year. In order to meet the market demand, we will develop many new doors every year, and frequently put forward new requirements for PVC sealing strips, but it is very difficult to find matching sealing strips in the market. Contents of the invention [0003] The purpose of the present invention is to provide a PVC flame-retardant sealing strip and its preparation method, which has a wide range of applications and can use one formula to produce sealing strips of different models and sizes. [0004] The more specific technical scheme of the present invention is as follows: [0005] A PVC flame-retardant sealing strip, comprising the following components in mass percentage: 10-40% of polyvinyl chloride resin powder, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L33/04C08K7/24C08K3/26C08K5/12C08K3/22C08K3/38C08K13/04C08K9/10C08K3/02C08K13/06
CPCC08L27/06C08K2003/265C08K2003/387C08K2003/026C08L2201/02C08L33/04C08K7/24C08K3/26C08K5/12C08K3/2279C08K3/38C08K13/04C08K9/10C08K3/02C08K13/06
Inventor 钟小芳
Owner 广西鑫扬金属表面处理有限公司