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A technology of flame retardant polymers and composite materials, which is applied in the field of polymer composite materials to achieve the effects of promoting the char formation process, increasing the oxygen index and reducing the dosage
Inactive Publication Date: 2009-06-24
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0006] However, there are currently no patents covering flame retardant synergists for triazine intumescent flame retardants
Method used
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Embodiment 1
[0018] Embodiment 1: Take by weighing 46 grams of medium density polyethylene (PE3802, French Atto Company), 90 grams of poly(ethylene-vinyl acetate) (EVA260, Mitsui Corporation of Japan), intumescent flame retardant (4-aminoquinoline The mass ratio of triazine and APP is 1:5) 63 grams, synthetic magnesium silicate (Hong Kong Advanced Technology Industrial Co., Ltd.) 1 gram, after stirring evenly, melt and mix with an open mill, the temperature of the open mill is 140-150 ℃, kneading for 10 minutes, and then molded in a flat vulcanizer at a temperature of 160 ℃. Use the cutting machine to prepare samples according to the test requirements.
[0019] The tensile strength is 12.4MPa, the elongation at break is 660%, the vertical combustion V-2, the total burning time is 25s, the sample is elongated, and the oxygen index is 34.1.
Embodiment 2
[0020] Embodiment 2: Except 62 grams of intumescent flame retardants and 3 grams of synthetic magnesium silicate, all the other are the same as in Embodiment 1.
[0021] The tensile strength is 12.8MPa, the elongation at break is 640%, the vertical burning is V-1, the total burning time is 19s, the extinguishing is slow, and the oxygen index is 34.8.
Embodiment 3
[0022] Embodiment 3: except 61 grams of intumescent flame retardants, 5 grams of synthetic magnesium silicate, all the other are the same as embodiment 1.
[0023] The tensile strength is 12.6MPa, the elongation at break is 660%, the vertical combustion is V-O, the total burning time is 7s, it is extinguished relatively quickly, and the oxygen index is 36.4.
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Abstract
The invention discloses a flame retarding polymer composite material which is compounded by resin system, intumescent flame retardant and flame retardant synergist which are melted by a extruding machine or a mill mixer. The intumescent flame retardant comprises a triazine compound and polyphosphate. The flame retardant synergist is silicon magnetism containing inorganic substance. The triazine compound has good thermal stability and water resisting property, is used as carbon source and air source and compounded with ammonium polyphosphate to constitute the intumescent flame retardant which is applied in the flame-retardant polymer which has good flame retardant effect. The obtained coal bed reveals out compact and continuous structure. The silicon magnetism containing inorganic substance is added as the flame retardant synergist, thus promoting the formation of the coal bed, improving the quality of the coal bed, obtaining the flame retarding polymer materials with higher flame retardance in the condition of keeping the same addition of the flame retardant.
Description
technical field [0001] The invention relates to a flame retardant additive for organic polymers, in particular adding a small amount of flame retardant synergist to a polymer composite material flame-retardant by a triazine expansion type flame retardant to improve its flame retardant performance. Background technique [0002] Intumescent flame retardants have the characteristics of halogen-free, low toxicity and low smoke, which conform to the development trend of green flame-retardant materials, and have been widely favored in recent years. Compared with inorganic type (such as magnesium hydroxide and aluminum hydroxide, etc.) environmentally friendly flame retardants, intumescent flame retardants have higher flame retardant efficiency and better resin compatibility, and are added in less, so they can be better Maintaining the mechanical properties of the resin is considered to be one of the most practical ways to achieve flame retardancy of non-halogenated polyolefins. ...
Claims
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Application Information
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