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Low-heat low-smoke flame retardant and application thereof in preparing flame-retardant master batch

A technology of low-smoke flame retardant and flame-retardant masterbatch, which is used in the application field of low-heat and low-smoke flame retardants and the preparation of flame-retardant masterbatches, can solve the problems of not being used as an evaluation material, etc., to reduce the heat release rate, delay the The spread of fire, the effect of increasing the chance of escape

Active Publication Date: 2011-08-24
上海安凸塑料添加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current test methods to characterize the combustion performance of materials, such as the oxygen index (LOI) method, the horizontal combustion method and the vertical combustion method in UL standards, are mostly traditional small-scale test methods, and the test operating environment is quite different from the real fire. The data can only be used to compare the combustion performance of materials under certain test conditions, and cannot be used as a basis for evaluating the behavior of materials in real fires

Method used

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  • Low-heat low-smoke flame retardant and application thereof in preparing flame-retardant master batch
  • Low-heat low-smoke flame retardant and application thereof in preparing flame-retardant master batch
  • Low-heat low-smoke flame retardant and application thereof in preparing flame-retardant master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A new type of low-heat and low-smoke flame retardant, the weight percentage of each component is: 45% of aluminum hypophosphite, 30% of melamine cyanurate, 10% of nano diatomite, and 15% of polydiisopropylbenzene.

[0035] Blend manufacturing process, after the ingredients are mixed, they are added to a co-rotating twin-screw extruder for extrusion and granulation. The screw length-to-diameter ratio of the extruder can be 40, and the pellets are drawn and pelletized after water-cooling with a pull rod. The temperature setting of each zone of the twin-screw extruder is 170°C-180°C-180°C-190°C-190°C-190°C-200°C-190°C. The temperature of the cooling water was controlled at 30° C., the blend B was obtained by melt extrusion, granulation and cooling.

Embodiment 2

[0037] A new type of low-heat and low-smoke flame retardant, the weight percentage of each component is: 40% of aluminum hypophosphite, 50% of melamine cyanurate, 4% of nano diatomite, and 6% of polydiisopropylbenzene.

[0038] The flame retardant masterbatch using the above new type of flame retardant, the weight percentage of each component is: 85% of new low heat and low smoke flame retardant, 12% of polypropylene, 2% of polyethylene wax, and 1% of antioxidant (1010) .

[0039] Polypropylene (homopolymerization, Moplen HP550, produced by Basell Company) and the flame-retardant masterbatch were blended and extruded in a twin-screw extruder for granulation, wherein the weight ratio was polypropylene / flame-retardant masterbatch=97.65 / 2.35. See Comparative Example 1 for the test of CONE. This blend is C.

[0040] The manufacturing process of flame retardant masterbatch includes the following steps: mixing a new type of low heat and low smoke flame retardant, carrier resin, an...

Embodiment 3

[0042] A new type of low-heat and low-smoke flame retardant, the weight percentage of each component is: 70% of calcium hypophosphite, 23% of melamine polyphosphate, 2% of nano silicon dioxide, and 5% of dimethyl diphenylhexane.

[0043] The flame retardant masterbatch using the above new type of flame retardant, the weight percentage of each component is: 40% of new low heat and low smoke flame retardant, 57.9% of polypropylene, 2% of polyethylene wax, and 0.1% of antioxidant (1010) .

[0044] Adopting polypropylene (homopolymerization, Moplen HP550, produced by Basell) and the flame-retardant masterbatch in a twin-screw extruder to co-extrude and pelletize, wherein the weight ratio is polypropylene / fire-retardant masterbatch=95 / 5, manufacturing Technology is with embodiment 2. See Comparative Example 1 for the test of CONE. This blend is D.

[0045] Using CONE to test heat release rate (HRR), smoke release rate (RSR), total smoke production (TSP), and other basic performa...

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Abstract

The invention relates to a low-heat low-smoke flame retardant and application thereof in preparing a flame-retardant master batch. The low-heat low-smoke flame retardant comprises the following components in percentage by weight: 40-70% of hypophosphite, 20-50% of melamine compound, 0.1-10% of nano inorganic substance and 5-15% of assistant. The low-heat low-smoke flame retardant can be used for preparing a flame-retardant master batch. Compared with the prior art, the invention can effectively reduce the heat release rate, smoke release rate and total smoke generation quantity, thereby performing active functions of postponing the propagation of flame, reducing the rate of burning released substances and increasing the escape probability.

Description

technical field [0001] The invention relates to a flame retardant and its application, in particular to a low-heat, low-smoke flame retardant and its application in preparing flame-retardant masterbatches. Background technique [0002] The struggle to utilize and control fire runs through the history of human social development and the history of science and technology. Once the fire is out of control, it will lead to a fire, causing heavy losses to the country and people's lives and property; controlling the occurrence of fire has become a major issue in the world today. [0003] As polymer materials such as plastics have been more and more widely used in recent years, the development of flame retardant technology for plastics has gradually attracted people's attention. On the one hand, since a large number of high-efficiency halogen-containing flame-retardant materials have been used, when a fire occurs, the toxic smoke generated by the combustion is enough to suffocate o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08K3/32C08K5/3492C08K3/26C08K3/30C08K7/20C08K3/34C08K3/22C08K3/36C08L23/06C08L23/08C08L23/12
Inventor 付常俊田铁生
Owner 上海安凸塑料添加剂有限公司
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