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Flame-retardant PVC modified plastic and preparation method thereof

A plastic modification technology, which is applied in the field of flame-retardant PVC modified plastics and its preparation, can solve the problems of high heat release rate, environmental hazards, life safety threats, etc. Good results

Inactive Publication Date: 2015-10-21
SUZHOU RONGCHANG COMPOUND MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most polymers are flammable and combustible materials. When burning, the heat release rate is high, the calorific value is high, the flame spreads fast, and it is not easy to extinguish. Sometimes it also produces thick smoke and toxic gases, which is harmful to the environment and people's lives. security poses a huge threat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh out 100 parts of polyvinyl chloride resin, 1 part of light calcium carbonate, 2 parts of nano titanium dioxide, 0.5 part of vinyl triethoxysilane, 0.5 part of nano aluminum hydroxide, 0.2 part of nano magnesium hydroxide, and phosphoric acid according to the proportion. 0.1 part of diammonium, 1.5 part of dioctyl phthaloyl, 0.1 part of acetyl tributyl citrate, stir evenly, add to the twin-screw extruder, the temperature of the first zone is 160℃, the temperature of the second zone is 175℃, and the third The temperature in zone is 200℃, the temperature in zone four is 220°C, the temperature in zone five is 220°C, the temperature in zone six is ​​210°C, and the main engine speed is 400rpm; after extrusion, the strands are cooled and air-dried and pelletized to prepare the invention Flame retardant PVC modified plastic.

Embodiment 2

[0046] Weigh the substances in proportion: 100 parts of polyvinyl chloride resin, 1 part of light calcium carbonate, 3 parts of nano-titanium dioxide, 0.5 part of vinyl triethoxysilane, 0.5 part of nano aluminum hydroxide, 0.2 part of nano-magnesium hydroxide, 0.1 part of diammonium phosphate, 1 part of dioctyl phthaloyl, 0.1 part of acetyl tributyl citrate, stir evenly, add to the twin-screw extruder, the processing temperature of the twin-screw extruder: temperature in the first zone 140℃, temperature in zone two is 175℃, temperature in zone three is 190℃, temperature in zone four is 215℃, temperature in zone five is 220℃, temperature in zone six is ​​210℃, main engine speed is 450rpm; cooling tie after extrusion, Air-dried and cut pellets to prepare the flame-retardant PVC modified plastic of the present invention.

Embodiment 3

[0048] Weigh the substances in proportion: 100 parts of polyvinyl chloride resin, 5 parts of light calcium carbonate, 4 parts of nano titanium dioxide, 2 parts of coupling agent, 0.8 part of nano aluminum hydroxide, 1 part of nano magnesium hydroxide, 0.1 part of diammonium phosphate 2 parts, 2 parts of dioctyl phthaloyl citrate, 0.5 parts of acetyl tributyl citrate, stir evenly, add to the twin-screw extruder, the processing temperature of the twin-screw extruder: the temperature of the first zone is 150℃, the second zone The temperature is 190°C, the temperature in the third zone is 200°C, the temperature in the fourth zone is 225°C, the temperature in the fifth zone is 225°C, and the temperature in the sixth zone is 215°C. That is, the flame-retardant PVC modified plastic of the present invention is prepared.

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PUM

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Abstract

The invention discloses a flame-retardant PVC modified plastic and a preparation method thereof. The PVC modified plastic comprises the following substances, by weight: 100 parts of polyvinyl chloride resin, 1-6 parts of light calcium carbonate, 2-6 parts of nano-grade titanium dioxide, 0.5-3 parts of a coupling agent, 0.5-1 part of nano-grade aluminum hydroxide, 0.2-1 part of nano-grade magnesium hydroxide, 0.1-0.5 parts of diammonium phosphate, 1-2 parts of phthaloyl dioctyl ester, and 0.1-0.5 parts of acetyl tributyl citrate. The flame-retardant PVC modified plastic provided by the invention has the characteristics of low flame retardant addition amount, good flame-retarding effect, high stability and good dispersion property.

Description

Technical field [0001] The invention belongs to the technical field of modified plastics, and specifically relates to a flame-retardant PVC modified plastic and a preparation method thereof. Background technique [0002] At present, most of the home appliances we use, such as TVs, refrigerators, washing machines, water dispensers, etc., have many parts made of plastic, and many public items such as telephones, computer keyboards, various electrical switches, children's toys, etc. are frequently contacted. The parts also use a lot of plastic. Since it is inevitable to come into contact with human bodies and objects that carry bacteria in normal use, many kinds of pathogenic bacteria may be contaminated and breed on the plastic surface. People are susceptible to bacterial infections when they come into contact with them. According to a survey by the Scottish Telephone Company in the United Kingdom, more than a dozen infectious diseases such as colds, pharyngitis, meningitis, hepat...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K3/26C08K3/22C08K3/32C08K5/12C08K5/11C08K5/5425
CPCC08K13/02B29C48/92B29C2948/92704C08K3/22C08K3/26C08K3/32C08K5/11C08K5/12C08K5/5425C08K2003/222C08K2003/2227C08K2003/2241C08K2003/265C08K2003/322C08K2201/011C08L2201/02C08L27/06
Inventor 资于明朱正华黄仁军
Owner SUZHOU RONGCHANG COMPOUND MATERIAL
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