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Flame retardant smoke suppressant and pvc flame retardant smoke suppressant polymer for cables

A flame-retardant smoke suppressant and polymer technology, which is applied in the field of flame-retardant smoke suppressant and PVC flame-retardant smoke suppressant polymer for cables, can solve the problems of high price, increased toxicity index, and poor flame-retardant effect, and achieves Low price, strong smoke elimination ability, good flame retardant effect

Active Publication Date: 2018-04-06
无锡市英普立阻燃材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main materials of smoke suppressant products at home and abroad are molybdenum trioxide, molybdate (such as ammonium octamolybdate), stannate (zinc stannate), etc., which are characterized by good smoke suppression effect, but poor flame retardancy. Users need to add additional flame retardants. Generally, users add antimony trioxide or chlorinated paraffin wax, etc., which will increase the toxicity index of the product. In addition, the price is very expensive, ranging from 180,000 to 250,000 yuan per ton, which is difficult for the market to accept
In order to reduce costs, some domestic manufacturers of flame retardant smoke suppressants use zinc borate heptahydrate or borax, but their flame retardant effect and smoke suppression ability are not ideal, and the addition amount must exceed 10 parts per 100 parts of the product to work

Method used

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  • Flame retardant smoke suppressant and pvc flame retardant smoke suppressant polymer for cables
  • Flame retardant smoke suppressant and pvc flame retardant smoke suppressant polymer for cables
  • Flame retardant smoke suppressant and pvc flame retardant smoke suppressant polymer for cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of Flame Retardant Smoke Suppressant

[0058] Commercially available natural brucite with magnesium hydroxide content ≥ 96% is mechanically crushed into 325-mesh magnesium hydroxide powder, crushed in a supersonic fluidized bed jet mill, and classified by a three-stage cyclone to obtain an average particle size of 0.5- 0.85μm submicron micropowder, add a coupling agent (see Table 1) corresponding to the weight of magnesium hydroxide. Put it into a 900 rpm high-speed mechanical mixer, mix until the temperature reaches 120-130 ° C, stop high-speed stirring and discharge, put it into a high-pressure fluidized bed jet mill after cooling down, and undergo secondary treatment at 2000 rpm. The obtained activated magnesium hydroxide has good slipperiness, and flows in waves when pushed in a flat plate, and no obvious agglomerated particles are found by microscope observation. Then add the corresponding antimony trioxide, zinc oxide, and molybdenum trioxide (see Tab...

Embodiment 2

[0062] Preparation of Flame Retardant Smoke Suppressant

[0063] Commercially available natural brucite with magnesium hydroxide content ≥ 96% is mechanically crushed into 325-mesh magnesium hydroxide powder, crushed in a supersonic fluidized bed jet mill, and classified by a three-stage cyclone to obtain an average particle size of 0.85~ 1μm submicron micropowder, add the corresponding percentage of the weight of magnesium hydroxide coupling agent (see Table 1). Put it into a 900 rpm high-speed mechanical mixer, mix until the temperature reaches 120-130 ° C, stop high-speed stirring and discharge, put it into a high-pressure fluidized bed jet mill after cooling down, and undergo secondary treatment at 2000 rpm. The obtained activated magnesium hydroxide has good slipperiness, and flows in waves when pushed in a flat plate, and no obvious agglomerated particles are found by microscope observation. Then add the corresponding antimony trioxide, zinc oxide, and molybdenum trioxi...

Embodiment 3

[0067] Preparation of Flame Retardant Smoke Suppressant

[0068] Commercially available natural brucite with magnesium hydroxide content ≥ 96% is mechanically crushed into 325-mesh magnesium hydroxide powder, crushed in a supersonic fluidized bed jet mill, and classified by a three-stage cyclone to obtain an average particle size of 0.5- 0.7μm submicron micropowder, add a coupling agent with a weight corresponding to the percentage of magnesium hydroxide (see Table 1). Put it into a 900 rpm high-speed mechanical mixer, mix until the temperature reaches 120-130 ° C, stop high-speed stirring and discharge, put it into a high-pressure fluidized bed jet mill after cooling down, and undergo secondary treatment at 2000 rpm. The obtained activated magnesium hydroxide has good slipperiness, and flows in waves when pushed in a flat plate, and no obvious agglomerated particles are found by microscope observation. Then add the corresponding antimony trioxide, zinc oxide, and molybdenum ...

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Abstract

The invention discloses a flame retardant smoke suppressant, which is composed of the following components by weight percentage: 90%-97.2% of magnesium hydroxide; 2%-6% of antimony trioxide; and 0.8%-4% of zinc oxide. The invention also discloses a PVC flame-retardant and smoke-eliminating polymer for cables, which consists of the following components in parts by weight: 100 parts of polyvinyl chloride resin; 45-55 parts of plasticizer; 3-5 parts of stabilizer; 5-10 parts of smoke suppressant; 0.2-1 part of antioxidant; 1-3 parts of processing aid; 40-50 parts of filler. The flame retardant smoke suppressant and the PVC flame retardant smoke suppressant polymer for cables of the present invention have the characteristics of good flame retardancy, strong smoke suppressing ability, environmental protection, low price and the like.

Description

technical field [0001] The invention relates to a flame-retardant smoke suppressant and a PVC flame-retardant smoke suppressant polymer for cables. Background technique [0002] The rapid development of the synthetic resin and plastic industries in the world today has been widely used in various fields such as electrical appliances, machinery, chemicals, building materials, textiles, transportation, etc. In my country, the amount of polyvinyl chloride (PVC) still occupies the main position. According to agency statistics, the annual consumption of polyvinyl chloride (PVC) in the wire and cable industry alone exceeds 3 million tons. Because the plastic resin is flammable, once it catches fire, it will easily cause property loss and personal injury. According to British data, more than 90% of the fires are caused by electrical appliances, wires and other electrical appliances, and 95% of the deaths are caused by the toxic smoke generated during the fire. Passage escape, thus ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K3/016C08K3/22C08L27/06C08K13/06
Inventor 金标义俞祥兴
Owner 无锡市英普立阻燃材料有限公司
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