High-capacity flame-retardant master batch

A flame-retardant masterbatch, high-capacity technology, applied in the field of flame-retardant materials, can solve the problems of limited dispersion uniformity and high-capacity characteristics, and achieve the effects of increased dispersion uniformity, capacity, and good fluidity

Pending Publication Date: 2022-07-12
QINGYUAN CITY YICHENG FLAME RETARDANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the study, it was found that polypropylene, as a flame retardant substrate, has limited dispersion uniformity and high capacity characteristics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high-capacity flame retardant masterbatch prepared by:

[0030] Step 1: Mix and add to the screw extruder;

[0031] Step 2: The temperature of the first zone of the twin-screw extruder is 170-190°C, the temperature of the second zone is 180-200°C, the temperature of the third zone is 190-210°C, the temperature of the fourth zone is 200-225°C, and the temperature of the fifth zone is 215°C -230°C, the temperature of the six zones is 220-230°C; the rotational speed of the twin-screw extruder is 200-300rpm.

[0032] The recipe for step 1 is as follows:

[0033] Polypropylene PPB-M02 20%

[0034] Low density polyethylene 4%;

[0035] Ethylene copolymer LOTADER 4700 8%;

[0036] N-methyl-N-allyl-melamine 13.6%;

[0037] Ammonium polyphosphate 54.2%;

[0038] Vinyltriethoxysilane 0.1%;

[0039] Dicumyl peroxide 0.1%.

Embodiment 2-5

[0041] A high-capacity flame retardant masterbatch, the preparation method is the same as that of Example 1, and the specific formula is as follows in Table 1:

[0042] Table 1 Recipe table

[0043] polypropylene Example 2 Example 3 Example 4 Example 5 polypropylene 20 18 16 25 Low-density polyethylene 3.8 4.8 3.8 4.8 LOTADER 4700 6 5 5 10 N,N-Diallylmelamine 15.5 14.4 15 13.3 Ammonium polyphosphate 54.5 57.6 60 46.7 vinyltrimethoxysilane 0.1 0.1 0.1 0.1 Dicumyl peroxide 0.1 0.1 0.1 0.1

Embodiment 4

[0060] The granulation results of Example 4 (a little colorant was added to adjust the color of the particles in Example 4) can be seen figure 1 , the granulation results of Example 5 can be seen figure 2 .

[0061] When the filler content reaches 75%, this scheme can still obtain complete particles, but the cross section is relatively rough, which still meets the application standards.

[0062] When the granular material in this case is used in a sheet, it can improve the notched impact strength and tensile strength, and reduce the weakening of the material properties.

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PUM

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Abstract

The invention belongs to the field of flame-retardant materials, and discloses a high-capacity flame-retardant master batch which comprises polypropylene, an ethylene copolymer LOTADER 4700, a carbon-forming agent, ammonium polyphosphate, a silane cross-linking agent and an initiator. The carbon forming agent is an allyl substituted triazine carbon forming agent; the components are as follows: 15-25% of polypropylene; 3-5% of low density polyethylene; 5 to 10% of an ethylene copolymer LOTADER 4700; the total amount of the ammonium polyphosphate and the carbon-forming agent is controlled to be 60-75%; 0.05%-0.1% of a silane cross-linking agent with an unsaturated olefinic bond; and 0.05 to 0.1 percent of an initiator. The weight ratio of the ammonium polyphosphate to the carbon-forming agent is 3.5: 1-4: 1. The master batch is good in dispersion uniformity, and the capacity is improved.

Description

technical field [0001] The invention belongs to the field of flame-retardant materials, in particular to a high-capacity flame-retardant master batch. Background technique [0002] The applicant disclosed the previous application CN201610034873.3, which discloses a flame retardant containing an allyl-substituted triazine carbon-forming agent and a preparation method thereof. The intumescent flame retardant is composed of a cross-linkable polymer resin. The allyl-substituted triazine carbon former is composed of ammonium polyphosphate or coated ammonium polyphosphate and a crosslinking agent. The allyl-substituted triazine carbon-forming agent that can be cross-linked with the resin substrate is prepared by substitution reaction in an aqueous solution with cyanuric chloride, allylamine and ammonia water as raw materials. Production, no use of organic solvents, high yield characteristics. The carbon-forming agent has both a gas source and a carbon source unit, and is combine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K3/32C08K5/3492C08K5/5425C08J3/22
CPCC08J3/226C08J2423/12C08J2423/08C08J2423/06C08K2003/323C08K5/34922C08K5/5425
Inventor 彭昀成
Owner QINGYUAN CITY YICHENG FLAME RETARDANT MATERIALS
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