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High-glowing filament anti-soaking separate-out-free halogen-free inflaming retarding polypropylene materials and preparation method thereof

A technology of flame-retardant polypropylene and high glow wire, which is applied in the field of halogen-free flame-retardant polypropylene materials, can solve the problems of appearance and flame-retardant performance degradation, affecting material performance, and large smoke generation, so as to facilitate large-scale promotion The use and production process are simple, and the effect of improving thermal stability

Active Publication Date: 2013-06-19
聚石化学(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Some components in electronic and electrical products may burn due to local overheating caused by poor contact, overload or short circuit. The method to characterize this performance of materials is mainly the glow wire test. A glow-wire 850°C non-flammable polypropylene composite material and its production method", the composite material uses ammonium polyphosphate, bromine-containing isocyanurate and melamine as flame retardants, and the flame retardant components contain halogen. The amount of smoke is large, and the HX gas released during combustion is highly corrosive and not environmentally friendly. At the same time, melamine is used as the source, and there may be a danger of precipitation, resulting in a decline in appearance and flame retardancy; currently on the market. Flame-retardant polypropylene materials generally can only reach 750°C, and most products are filled with halogen or hydroxide, or are not environmentally friendly or seriously affect material performance or are not resistant to water immersion

Method used

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  • High-glowing filament anti-soaking separate-out-free halogen-free inflaming retarding polypropylene materials and preparation method thereof
  • High-glowing filament anti-soaking separate-out-free halogen-free inflaming retarding polypropylene materials and preparation method thereof
  • High-glowing filament anti-soaking separate-out-free halogen-free inflaming retarding polypropylene materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The present invention is a basic preparation method of a high-glow wire immersion-resistant precipitation-free halogen-free flame-retardant polypropylene material. The steps of the method are as follows:

[0032] (1) Weigh the organic or inorganic hypophosphite wrapped in silane, halogen-free organic phosphate or its derivatives wrapped in MF, and melamine cyanurate according to the ratio of the components of the compound halogen-free flame retardant above, and add Stir fully in a high-speed mixer to make it evenly mixed to obtain a compound halogen-free intumescent flame retardant;

[0033] (2) Weigh PP resin, compound halogen-free flame retardant, flame retardant synergist, inorganic filler, antioxidant, lubricant according to the above ratio, add it to a high-speed mixer and mix for 3~5 minutes, and mix at a high speed The speed of the machine is 500~2000 r / min;

[0034] (3) Put the mixed material into the parallel twin-screw extruder to extrude and granulate.

[0...

Embodiment 1

[0038] In the present embodiment, the composite halogen-free flame retardant is 30 parts of aluminum hypophosphite wrapped by silane, 35 parts of spirocyclic phosphate ester wrapped by MF, and 15 parts of melamine cyanurate in parts by weight of each component. Fully stir in a high-speed mixer to make it evenly mixed to obtain a compound halogen-free intumescent flame retardant. The preparation method of the compound halogen-free flame retardant in Examples 1-5 is the same. The antioxidant is a mixture of phosphite antioxidant 168 and hindered phenolic antioxidant 1010, and the antioxidants in Examples 1 to 5 are the same. The composition of raw materials for preparing halogen-free flame retardant materials is as follows in Table 1:

[0039]

[0040] Table 1

[0041] Its preparation method is,

[0042] (1) Weigh various raw materials according to the weight ratio in the table;

[0043] (2) Put the raw materials into the high-speed mixer and mix for 3-5 minutes, the spee...

Embodiment 2

[0047] In this example, the compound halogen-free flame retardant is 50 parts by weight of each component, 50 parts of zinc phenyl hypophosphite wrapped in silane, 35 parts of bisphenol A-bis(diphenyl phosphate) wrapped in MF, melamine cyanide The uric acid ester is 20 parts, which is added into a high-speed blender and fully stirred to make it evenly mixed to obtain a compound halogen-free intumescent flame retardant. The composition of raw materials for preparing halogen-free flame retardant materials is as follows in Table 2:

[0048]

[0049] Table 2

[0050] Its preparation method is identical with the preparation method of embodiment 1.

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Abstract

The invention discloses high-glowing filament anti-soaking separate-out-free halogen-free inflaming retarding polypropylene materials which comprise the following components: by weight, 40-80 parts of polypropylene (PP) resins, 20-40 parts of compound halogen-free flame retarding agents, 0.5-5 parts of flame retardant synergists, 0-30 parts of inorganic fillers, 0.1-0.5 part of antioxidants, and 0.4-1 part of lubricating agents. The compound halogen-free flame retarding agents are composed of the following components: by weight, 30-50 parts of silane-wrapped organic or inorganic hypophosphite, 35-50 parts of melamine formaldehyde resin (MF)-wrapped halogen-free organic phosphate ester or the ramification thereof, and 15-40 parts of melamine cyanuric acid ester. The compound halogen-free flame retarding agents are easy to disperse in the process of processing, so that processing is convenient. The halogen-free inflaming retarding polypropylene materials prepared by the method have high-glow filaments, and have the advantages of being anti-soaking, separate-out-free and the like. In addition, the production process is simple, so that industrial production can be achieved.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polypropylene material, in particular to a halogen-free flame-retardant polypropylene material with high glow wire immersion resistance and no precipitation; meanwhile, the invention also relates to a preparation method of the flame-retardant polypropylene material. Background technique [0002] Polypropylene (PP) is one of the five general-purpose thermoplastics. It is light in weight, good in fluidity, and excellent in insulation. It is widely used in many fields of production and life such as household appliances and electronic instruments. However, the limiting oxygen index of PP resin is very low, which is a flammable material, and the molten droplets are serious when burning, and it is easy to spread flames and cause fires, which cannot meet the use requirements in the field of fire prevention. With the improvement of people's safety awareness, continuously improving the safety level of prod...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K13/06C08K9/10C08K3/32C08K5/5313C08K5/521C08K5/523C08K5/527C08K5/3492C08K3/34C08K3/22C08K3/36C08K7/14C08K3/40C08K5/134C08K5/524B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 沈寒知张翼翔何燕岭沈旭渠张秀芹
Owner 聚石化学(苏州)有限公司
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