Flame retardant polypropylene composite compounded by layered thermometal hydroxide and intumescent flame retardant and preparation method of flame retardant polypropylene composite

The technology of layered bimetallic and intumescent flame retardant is applied in the field of compound flame retardant polypropylene composite material of layered bimetallic hydroxide and intumescent flame retardant and its preparation field, which can solve the problems of low smoke emission and the like, To achieve the effect of good adsorption, blocking heat transfer and good environmental effect

Inactive Publication Date: 2014-03-05
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Abstract
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Problems solved by technology

[0005] However, there is no relevant technical report on the preparation of flame-retardant polypropylene composite materials with high ther...

Method used

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  • Flame retardant polypropylene composite compounded by layered thermometal hydroxide and intumescent flame retardant and preparation method of flame retardant polypropylene composite
  • Flame retardant polypropylene composite compounded by layered thermometal hydroxide and intumescent flame retardant and preparation method of flame retardant polypropylene composite

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Embodiment Construction

[0019] The present invention is described in further detail below through specific examples, but the present invention is not limited only to the following examples. Some non-essential improvements and adjustments made by those skilled in the art according to the content of the present invention still belong to the protection scope of the present invention.

[0020] All raw materials used in the following examples of the present invention are commercially available products unless otherwise specified.

[0021] Table 1 is the raw material proportioning in each embodiment:

[0022] Table 1. The formula in each embodiment

[0023]

[0024] After weighing the raw materials of each embodiment in Table 1 according to the proportion, stir them with a medium-speed mixer for 10-20 minutes until they are evenly mixed, then transfer them to a twin-screw extruder for melt extrusion, and the temperature in the filler area is 150-170 ℃, the temperature of the mixing zone is 200-220℃, t...

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Abstract

The invention discloses a flame retardant polypropylene composite compounded by layered thermometal hydroxide and an intumescent flame retardant and a preparation method of the flame retardant polypropylene composite. The flame retardant polypropylene composite comprises the following components in percentage by weight: 60-73 percent of polypropylene, 23-33 percent of intumescent flame retardant, 1-2 percent of layered thermometal hydroxide and 3-7 percent of bulking agent. The flame retardant polypropylene composite compounded by the layered thermometal hydroxide and the intumescent flame retardant is excellent in heat stability, does not contain harmful substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polyborminated diphenyl ethers, is low in calorific value and fuming value in the combustion process, is harmless to the environment and a human body and also has good physical and mechanical properties and processability.

Description

technical field [0001] The invention relates to the technical fields of organic synthesis, blending of polymer composite materials, and testing of flame-retardant properties of materials, in particular to a flame-retardant polypropylene composite material compounded with layered double metal hydroxide and intumescent flame retardant and a preparation method thereof . technical background [0002] Layered double hydroxides (LDHs) are nanomaterials with a two-dimensional layered structure. The general chemical formula of layered double metal hydroxide can be expressed as: [M 2+ 1-X m 3+ X (OH) 2 ] X+ A n- X / n mH 2 O. Among them, M 2+ For divalent metal ions, such as Mg 2+ 、Ni 2+ , Zn 2+ etc.; M 3+ For trivalent metal ions, such as Al 3+ , Fe 3+ Wait. A n- For interlayer anions, mainly including inorganic anions (such as Cl - , NO 3- , CO 3 2- etc.), organic anions (such as phthalate, dodecylsulfonate, etc.), etc. [0003] Due to the variability of layer...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K7/00C08K3/22C08K5/3492B29C47/92B29C48/92
CPCB29C48/92C08L23/12B29C2948/92514B29C2948/92704C08L2201/02C08L51/06C08K5/34928C08K5/42
Inventor 郭正虹杜宝宪方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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