Nano inorganic composite fire-resisting agent for macromolecular material

A composite flame retardant, inorganic flame retardant technology, applied in the field of inorganic composite flame retardants, can solve the problems of reducing mechanical properties, inapplicability, affecting material properties, etc., achieve better flame retardant effect and avoid toxic smoke effect

Inactive Publication Date: 2004-10-13
BEIJING UNIV OF CHEM TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Due to the low decomposition temperature of ordinary aluminum hydroxide, it has decomposed at the processing temperature of some plastics, so it cannot be applied to plastics processed by high temperature plasticization.
In addition, the particle size of

Method used

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Examples

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Effect test

Embodiment 1-18

[0038] The present invention adopts the following three kinds of composite formulas: 1. Composite of nanometer aluminum hydroxide and micron magnesium hydroxide; 2. Composite of nanostructure modified aluminum hydroxide and micron magnesium hydroxide; 3. Composite of nanometer magnesium hydroxide and micron magnesium hydroxide , and the flame retardant formulations are respectively listed in Example 1 to Example 18 in Table 1. In Table 1, zinc borate is used as auxiliary flame retardant, and zinc oxide, iron oxide, red phosphorus, phosphate, carbonate or organic silicon can also be used as auxiliary flame retardant instead. The average particle diameters in the table are all approximate values ​​obtained by electron microscope observation and calculation.

[0039]As we all know, under the condition of the same amount of flame retardant, inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide can improve the flame retardant performance to a certain extent ...

Embodiment 19

[0042] The composite flame retardant of nanostructure modified aluminum hydroxide and micron magnesium hydroxide of the present invention is applied in ABS resin, and the dosage and proportion of the composite flame retardant and the oxygen index of the ABS material are listed in Table 2. Compared with the case of no flame retardant (sample number 1), using the nanostructure modified aluminum hydroxide, micron aluminum hydroxide and zinc borate composite flame retardant of the present invention, the oxygen index is significantly increased, and the flame retardant effect is obvious.

[0043] Preface

Embodiment 20

[0045] The composite flame retardant of nano magnesium hydroxide and micron magnesium hydroxide of the present invention is in ABS resin, and the oxygen index of composite flame retardant dosage and ABS material is listed in Table 3. It can be seen from Table 3 that the flame retardant effect of the nanostructure modified aluminum hydroxide, micron aluminum hydroxide and zinc borate composite flame retardant of the present invention is obviously better than that of single nano magnesium hydroxide.

[0046] Preface

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PUM

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Abstract

The present invention relates to a nano inorganic composite fire-retardant for macromolecular material. It is composed of nano aluminium hydroxide, nano structure modified aluminium hydroxide or nano magnesium hydroxide and micro-size magnesium hydroxide and auxiliary fire retardant, in which the average grain size of nano aluminium hydroxide is less than or equal to 100 nano, the average grain size of nano structure modified aluminium hydroxide is less than or equal to 150 nano, the average grain size of nano magnesium hydroxide is less than or equal to 100 nano, the average grain size of micro-size magnesium hydroxide is 1-10 microns, and the mass ratio of nano-size inorganic fire retardant and micro-size magnesium hydroxide is 80:20 to 10:90, and the mas ratio of nano-size inorganic fire-retardant and micro-size magnesium hydroxide and auxiliary fire retardant is 100:10 to 100:30. It can be used in the fire-retarding composite materials of PE, PP, ABS, nylon, PC, PVC, EVA and polyester, etc.

Description

technical field [0001] The invention relates to an inorganic composite flame retardant, which is composed of nanometer aluminum hydroxide, nanostructure modified aluminum hydroxide or nanometer magnesium hydroxide, micron magnesium hydroxide and auxiliary flame retardant, and the surface is modified by an organic modifier. properties, used in flame retardant polymer composites. technical background [0002] Inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide have the effects of flame retardancy and smoke suppression, and can avoid toxic fumes generated when halogen-containing flame-retardant polymer materials are burned. Alcoa Company of the United States produces an aluminum hydroxide flame retardant with a trade name of BAO and a particle size of 0.3-2.7 microns. The thermal decomposition temperature is above 350°C. It can be used for flame retardancy of polyethylene, polypropylene, ABS, polyvinyl chloride, EVA, and engineering plastics such as ...

Claims

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Application Information

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IPC IPC(8): C08K3/22
Inventor 陈建峰王国全郭奋张鹏远曾晓飞焦红霞杨国增宋云华陈建铭
Owner BEIJING UNIV OF CHEM TECH
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