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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 dispersion, poor affinity, affecting the processing performance and mechanical properties of polymer materials, etc. , to achieve the effect of improving compatibility, improving dispersibility, processing performance and mechanical properties

Inactive Publication Date: 2012-09-05
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  • Claims
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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 10000g 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℃, stir at high speed for 20-30 minutes to obtain the flame retardant .

Embodiment 2

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

Embodiment 3

[0021] Combine 10,000 g of magnesium hydroxide, 500 g of stearic acid, 500 g of zinc borate and 500 g of KH-570 silane coupling agent, heat up to 80±5° C., stir 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-based inorganic additive flame retardant, which decomposes between 340 and 490°C, is a chemical additive with three functions of filling, flame retardant and smoke suppression, and the smoke produced is non-toxic and non-corrosive, compared to organic In terms of halogen flame retardants, the high polymer of magnesium hydroxide as a flame retardant is a green engineering material. Due to its low price and a wide range of sources, it is currently mainly used in products with special requirements for fire safety such as wires and cables. With the continuous improvement of national fire protection regulations and the continuous improvement of environmental protection requirements for flame retardant products, magnesium hydroxide The application range of flame retardants is expanding to household appliances plastics, resins,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08L23/12C08L23/06
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