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High molecular flame-retardant masterbatch

A flame-retardant masterbatch and polymer technology, applied in the direction of fire-resistant coatings, etc., can solve the problems of affecting the mechanical properties of polymer materials, poor interface bonding, and low strength

Inactive Publication Date: 2005-11-23
SHANDONG TIANYE PLASTICIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional masterbatch production method is to use a coupling agent to treat the inorganic filler and then blend it with the polymer resin, but this treatment method is only combined with the polymer material at several points on the surface of the inorganic filler, that is, the interface between them The combination is not good, which affects the mechanical properties of polymer materials, such as low strength, poor toughness, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 100 parts by weight of aluminum hydroxide or magnesium hydroxide (fineness greater than 325 meshes) and 5 parts by weight of butyl acrylate and 0.1 parts by weight of ammonium persulfate are added to the reactor, then add twice the weight of water, and heat to React at 50°C while stirring. After the reaction is complete, dry to remove water and pulverize to obtain the coating material.

[0016] 80% (percentage by weight) of the above-mentioned cladding material, 18% polyethylene and 2% polyethylene wax are molded in a co-rotating building block type twin-screw extruder with a diameter of 75 mm and a length-to-diameter ratio of 36:1. Chemical granulation, the temperature of each section of the extruder is between 120 and 150 °C. After granulation, a pollution-free flame-retardant masterbatch is obtained.

Embodiment 2

[0020] 100 parts by weight of aluminum hydroxide or magnesium hydroxide (fineness greater than 325 orders) and 10 parts by weight of acrylonitrile, the sodium persulfate of 1 part by weight to obtain the coated aluminum hydroxide or magnesium hydroxide according to the method of embodiment one cladding material.

[0021] 85% (percentage by weight) of the above-mentioned cladding material and 13% polyethylene (or polypropylene, EPDM, ABS, polystyrene), 2% polyethylene wax are according to embodiment one at a diameter of 75 mm, plasticized and granulated in a co-rotating building block twin-screw extruder with a length-to-diameter ratio of 36:1, and a non-toxic flame-retardant masterbatch is obtained after granulation.

[0022] Products (such as cable sheaths) produced with the flame-retardant masterbatch obtained in this embodiment have improved flame-retardant effects, and the oxygen index is 30-38, while the oxygen index of products produced by the prior art method is 26.

Embodiment 3

[0024] 100 parts by weight of zinc borate, 15 parts by weight of acrylonitrile, and 0.8 parts by weight of sodium persulfate were used in accordance with the method of Example 1 to obtain a coating material coated with zinc borate.

[0025] 83% (percentage by weight) of the above-mentioned coating material and 17% ABS (SBS or polystyrene, EPDM) are 75 millimeters in diameter according to embodiment one, and length-to-diameter ratio is 36: 1 in the same direction It is plasticized and granulated in the building block twin-screw extruder, and the non-toxic flame-retardant masterbatch is obtained after granulation.

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Abstract

Disclosed is a high molecular flame-retardant masterbatch including inorganic flame-proof stuffing and macromolecular resin, characterized in that the inorganic flame-proof stuffing is coated by organic monomer to form clad material, which comprises (by weight percent) clad material 80-85%, dispersing agent 1-3%, and balancing macromolecular resin. The invention also discloses the process for forming the clad material.

Description

technical field [0001] The invention relates to a polymer flame-retardant masterbatch filled with inorganic fillers. Background technique [0002] Polymer materials include polyethylene, polypropylene, ABS, polyvinyl chloride, polystyrene and other polymers with relatively large molecular weights that are polymerized from resin monomers. Filling polymer materials with inorganic materials (fillers) can endow polymer materials with some special properties, such as flame retardancy, antistatic properties, rigidity, etc., and reduce costs. Among them, polymer flame retardant materials have a wide range of uses, and can be used to make outer sheaths of cables, decoration materials, packaging materials, pipes, housings of household appliances, and so on. Its production method is generally made into a masterbatch now, and then the masterbatch and raw materials are made into a special material, and the finished product is made according to the actual u...

Claims

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Application Information

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IPC IPC(8): C08F2/44
Inventor 付宇刚付宇经
Owner SHANDONG TIANYE PLASTICIZATION
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