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Flame retardant and use thereof in polymer modification

A flame retardant and polymer technology, applied in the field of flame retardant and its application in polymer modification, can solve the problems of poor affinity, affecting the processing and mechanical properties of polymer materials, and poor dispersibility. , to achieve the effect of improving dispersibility, processability and mechanical properties, and compatibility.

Inactive Publication Date: 2009-05-20
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case of high filling amount, not only the cross-section of the mixture often has the phenomenon of "crowding" caused by poor dispersion and poor affinity, but more seriously, it agglomerates to form particles with a diameter of 10-100 μm. Seriously affects the processability and mechanical properties of polymer materials

Method used

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  • Flame retardant and use thereof in polymer modification
  • Flame retardant and use thereof in polymer modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put 10,000g of magnesium hydroxide, 500g of stearic acid, 500g of zinc borate and 500g of KH-560 silane coupling agent into a high-temperature mixing kettle, heat up to 80±5°C, and stir at high speed for 20-30 minutes to obtain a flame retardant .

Embodiment 2

[0019] 3250g of the flame retardant obtained in Example 1 was mixed evenly with 1750g of low-density polyethylene in a high-speed mixer. Then extruded on a twin-screw extruder at an extrusion temperature of 180° C., water-cooled, and granulated to obtain a flame-retardant polyethylene material. The mechanical properties and flame-retardant properties are shown in Table 1.

Embodiment 3

[0021] 10000g of magnesium hydroxide, 500g of stearic acid, 500g of zinc borate and 500g of KH-570 silane coupling agent are heated up to 80±5°C and stirred at high speed for 20-30 minutes to obtain a flame retardant.

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Abstract

The invention relates to a fire retardant and an application thereof in polymer modification. The fire retardant can effectively improve the surface property of magnesium hydrate, and increase the compatibility thereof with a polymer, and the modified polymer has good retardant property and processing and mechanical properties. The raw materials of the fire retardant are calculated by weight and comprise 100 portions of magnesium hydrate, 5 portions to 15 portions of silane coupling agent and 3 portions to 10 portions of higher fatty acid and / or higher fatty acid salt. The application of the fire retardant in the polymer modification can be carried out by a common mode, and 50 portions to 70 portions of the fire retardant is melted and blended with 30 portions to 50 portions of the polymer by weight. The method modifies the magnesium hydrate together with a silane coupling agent, the higher fatty acid and / or higher fatty acid salt and a fire-retardant synergist. The compatibility of the fire retardant obtained and the polymer is greatly improved, compared with the compatibility of the fire retardant obtained and magnesium hydrate, thus being capable of effectively increasing the filling content of the magnesium hydrate in the polymer and not only improving fire-retardant property, but also improving processing and mechanical properties relatively.

Description

technical field [0001] The invention relates to a flame retardant and its application in polymer modification. Background technique [0002] Magnesium hydroxide is an inorganic additive flame retardant, which decomposes between 340 and 490 ° C. It is a chemical additive with triple functions of filling, flame retardancy and smoke suppression, and the smoke produced is non-toxic and non-corrosive. Compared with organic In terms of halogen-based flame retardants, magnesium hydroxide as a flame retardant polymer is a green engineering material. Due to its low price and wide range of sources, it is currently mainly used in wires, cables and other products that have special requirements for fire safety. With the continuous improvement of fire protection regulations in various countries and the continuous improvement of environmental protection requirements for flame retardant products, magnesium hydroxide The scope of application of flame retardants is expanding to household app...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08L23/12C08L23/06
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