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Halogen-free flame-retardant CR foam and preparation method thereof

A foam and solid flame retardant technology, applied in the field of foam materials, can solve the problems of high flame retardant addition, affecting foam uniformity and mechanical strength, poor dispersion uniformity, etc., to achieve good flame retardant performance, The effect of good foaming uniformity and mechanical strength

Active Publication Date: 2022-01-14
东莞市墨田科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Adding a flame retardant to CR foam can achieve a good flame retardant effect, but the amount of flame retardant added is generally high, plus fillers, etc. The addition of solid powder leads to poor dispersion uniformity of solid powder in chloroprene rubber, which seriously affects its foaming uniformity and mechanical strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A halogen-free flame-retardant CR foam in this embodiment is prepared from the following components by weight:

[0041] Neoprene 50 parts;

[0042] 4 parts of vulcanizing agent zinc oxide;

[0043] 5 parts of filler carbon black, 7 parts of magnesium powder;

[0044] 12 parts of surface-modified IFR flame retardant;

[0045] 3 parts of liquid flame retardant bisphenol A bis(diphenyl phosphate);

[0046] 2 parts of plasticizer stearic acid;

[0047] 4 parts softening oil naphthenic oil;

[0048] 3 parts of foaming agent azodicarbonamide (ADC);

[0049] Antioxidant 10101 parts.

[0050] The preparation method is as follows:

[0051] (1) Add IFR powder (composed of acid source aluminum hypophosphite, gas source melamine and carbon source triazine macromolecular char-forming agent) into silica sol and stir to mix evenly. The amount of silica sol added is IFR in terms of solid content. 15% of the mass of the powder, and then adding vinyltrimethoxysilane of 1% of the ...

Embodiment 2

[0056] A halogen-free flame-retardant CR foam in this embodiment is prepared from the following components by weight:

[0057] 40 parts of neoprene;

[0058] 3 parts of vulcanizing agent zinc oxide;

[0059] 20 parts of filler magnesium powder;

[0060] 15 parts of surface-modified IFR flame retardants;

[0061] 2 parts of liquid flame retardant resorcinol (diphenyl phosphate);

[0062] 1 part of plasticizer stearic acid;

[0063] Softened naphthenic oil 6 parts;

[0064] 2 parts of foaming agent azodicarbonamide (ADC);

[0065] Antioxidant 10101 parts.

[0066] The preparation method is as follows:

[0067] (1) Add IFR powder (composed of acid source ammonium polyphosphate, gas source melamine polyphosphate and carbon source triazine macromolecular char forming agent) into the silica sol and mix evenly. It is calculated as 5% of the mass of the IFR powder, and then 0.2% of the mass of the IFR powder is added with vinyltrimethoxysilane for surface modification, dried in ...

Embodiment 3

[0072] A halogen-free flame-retardant CR foam in this embodiment is prepared from the following components by weight:

[0073] Neoprene 55 parts;

[0074] 3 parts of vulcanizing agent zinc oxide, 2 parts of magnesium oxide;

[0075] Filler magnesium strong powder 8, calcium carbonate 4 parts;

[0076] 8 parts of surface-modified IFR flame retardant;

[0077] 6 parts of liquid flame retardant triisopropylphenyl phosphate;

[0078] 2 parts of plasticizer stearic acid;

[0079] Softened naphthenic oil 3 parts;

[0080] 5 parts of foaming agent azodicarbonamide (ADC);

[0081] Antioxidant 10101 parts.

[0082] The preparation method is as follows:

[0083] (1) Add IFR powder (composed of acid source aluminum diethyl hypophosphite, gas source melamine polyphosphate and carbon source pentaerythritol) into the silica sol and mix evenly. The amount of silica sol added is IFR in terms of solid content. 30% of the mass of the powder, and then adding vinyltrimethoxysilane with 2%...

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Abstract

The invention belongs to the technical field of foaming materials, and discloses halogen-free flame-retardant CR foam and a preparation method thereof. The CR foam comprises the following components in parts by weight: 40-55 parts of chloroprene rubber, 3-5 parts of a vulcanizing agent, 8-20 parts of a filling agent, 7-18 parts of a surface-modified solid flame retardant, 2-5 parts of a liquid flame retardant, 1-2 parts of a plasticizer, 3-6 parts of softening oil, 2-5 parts of a foaming agent and 0-8 parts of other functional additives. The preparation method comprises the following steps: uniformly mixing the chloroprene rubber, the plasticizer and the softening oil, putting the formed mixture into an internal mixer for internal mixing, then adding the vulcanizing agent, the filling agent, the surface-modified solid flame retardant, the liquid flame retardant, the foaming agent and other functional additives for continuous internal mixing, discharging rubber, carrying out cooling and forming, and carrying out vulcanization foaming treatment to obtain the halogen-free flame-retardant CR foam. The CR foam has good flame retardance, foaming uniformity and mechanical strength at the same time, and also has obvious market advantages.

Description

technical field [0001] The invention belongs to the technical field of foam materials, and in particular relates to a halogen-free flame-retardant CR foam and a preparation method thereof. Background technique [0002] CR foam is a general-purpose special rubber. In addition to the good physical properties of general rubber, it also has excellent properties such as flame resistance, oil resistance, and chemical corrosion resistance. The full name of CR foam in Chinese is neoprene foaming material. It is made of synthetic rubber neoprene, which is granulated and mixed with foaming agent and other auxiliary materials at high temperature to form a jelly with uniform composition, and then heated by the mold at high temperature. , under the action of the foaming agent to form an independent micro-cell structure, and finally foam into a closed-cell CR foam. [0003] Patent CN 101633753 A discloses a chloroprene closed-cell foaming material, which is composed of chloroprene rubber...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08K9/06C08K3/32C08K5/3492C08K5/5313C08K5/053C08K5/521C08K5/523C08K13/06C08J9/10
CPCC08J9/103C08J9/0038C08J9/009C08J9/0095C08J2203/04C08J2311/00
Inventor 刘新宝
Owner 东莞市墨田科技实业有限公司
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