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Novel halogen-free environment-friendly type flame-proof polypropylene material

A technology of flame-retardant polypropylene and polypropylene pellets, applied in fire-retardant coatings and other directions, can solve the problems of toxic corrosive gases, large additions, and the influence of polymer material properties, and achieve good flame-retardant performance and mechanical properties. Effect

Active Publication Date: 2008-04-16
浙江省化工产品质量检验站有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogen-containing flame retardants have a long history, are used in small amounts and have good effects, but they emit toxic and corrosive gases during combustion
Inorganic additive flame retardants (magnesium hydroxide, aluminum hydroxide, etc.) have a serious impact on the properties of polymer materials due to the large amount of addition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 50kg of polypropylene pellets, 38kg of halogen-free intumescent flame retardant, 0.5kg of stearic acid, 0.2kg of antioxidant, 0.5kg of coupling agent, and the balance of talcum powder. Add the above raw materials into a high-speed mixer and mix them evenly. Under the conditions of conventional feeding speed, temperature and screw speed, feed into a twin-screw extruder, extrude, cool, and pelletize to obtain the halogen-free environment-friendly flame-retardant polypropylene of the present invention.

Embodiment 2

[0013] 70kg of polypropylene pellets, 28kg of halogen-free intumescent flame retardant, 1.5kg of stearic acid, 0.5kg of antioxidant, 1.5kg of coupling agent, and the balance of talcum powder. Add the above-mentioned raw materials into a high-speed mixer and mix them uniformly. Under the conditions of conventional feeding speed, temperature and screw speed, feed into a twin-screw extruder, extrude, cool, and pelletize to obtain the halogen-free environment-friendly flame-retardant polypropylene of the present invention.

Embodiment 3

[0015] 55kg of polypropylene pellets, 30kg of halogen-free intumescent flame retardant, 0.8kg of stearic acid, 0.2kg of antioxidant, 0.8kg of coupling agent, and the remaining amount of filler, put the above raw materials into a high-speed mixer and mix evenly. Under the conditions of feeding speed, temperature and screw speed, feed into a twin-screw extruder, extrude, cool, and pelletize to obtain the halogen-free and environment-friendly flame-retardant polypropylene of the present invention.

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PUM

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Abstract

The invention relates to a novel halogen-free environmental friendly fire retarding polypropylene material which comprises the following components (percentage by weight): 40 to 70 percent of polypropylene granules, 25 to 38 percent of halogen-free intumescent fire retardant, 0.5 to 1.5 percent of lubricant, 0.1 to 0.5 percent of antioxidant, 0.5 to 1.5 percent of coupling agent and filler surplus. The polypropylene material is made by the following method: polypropylene granules and other components are evenly mixed inside a high-speed mixer according to certain proportion and then are extruded by a twin screw extruder, cooled down and granulated under the conditions of routine feeding speed, temperature and screw stem rotary speed. With ideal flame retardant property and mechanical property, the polypropylene material is characterized by low smoke, low toxicity and no melt drip as compared with fire-retarding polypropylene, thereby reducing environmental pollution and doing less harm to human body.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polypropylene materials, in particular to a novel halogen-free and environment-friendly flame-retardant polypropylene material. Background technique [0002] Polypropylene is an important plastic species whose consumption in my country is second only to polyethylene. It is widely used in home appliances, construction, automobiles and other fields. However, polypropylene is extremely flammable. If it is applied to products with flame retardant requirements, flame retardants must be added. There are three main types of flame retardants used in polypropylene: phosphorus-containing compounds, halogen-containing compounds, and inorganic additives such as magnesium hydroxide and aluminum hydroxide. Halogen-containing flame retardants have a long history, are used in small amounts and have good effects, but they emit toxic and corrosive gases during combustion. Inorganic additive flame retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/14C08L23/12C08K5/5415C08K5/10C08K3/36
Inventor 陆凤英毛树标白瑞瑜郑冬芳金亚平
Owner 浙江省化工产品质量检验站有限公司
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