Fireproof material with alternate multi-layer structure and preparation method of fireproof material

A fireproof material, multi-layer structure technology, applied in the field of fireproof materials, to achieve the effect of excellent flame retardant effect

Pending Publication Date: 2022-03-25
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alternate multi-layer fireproof material prepared by the present invention can reduce the total content of nanomaterials and flame retardants, the prepared material has excellent flame retardant effect, and can retain certain material properties, and at the same time will not cause surface damage. It can effectively solve the problems in the prior art

Method used

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  • Fireproof material with alternate multi-layer structure and preparation method of fireproof material
  • Fireproof material with alternate multi-layer structure and preparation method of fireproof material
  • Fireproof material with alternate multi-layer structure and preparation method of fireproof material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a fireproof material with an alternating multilayer structure, comprising the following steps:

[0028] S1: Weigh 900g of maleic anhydride-grafted polypropylene and 100g of nanometer montmorillonite to prepare 10% nanometer montmorillonite polypropylene composite material, dry it in an oven at 60°C for 12 hours, put it into a twin-screw extruder for melt blending and extrusion For granulation, the extrusion temperature is 180°C, the screw speed is 20rpm / min, weigh 35g of granules and heat press, the heat press temperature is 180°C, the pressure is 0MPa for 5min, the pressure is 5MPa for 5min, and the heat press treatment is 1mm× 20cm×20cm sheet a;

[0029] S2: Weigh 35g of polypropylene, and heat press according to the method of S1 to prepare a sheet b with a thickness of 1mm×20cm×20cm;

[0030] S3: Alternately place two thin plates a obtained in step S1 and two thin plates b obtained in step S2, and heat-press them into a four-layer alternating ...

Embodiment 2

[0033] A method for preparing a fireproof material with an alternating multilayer structure, comprising the following steps:

[0034] S1: Weigh 940g of maleic anhydride grafted polyethylene, 50g of nanometer montmorillonite and 10g of flame retardant, dry in an oven at 60°C for 12 hours, put them into a twin-screw extruder for melt blending and extrude granulation, and the extrusion temperature At 200°C, the screw speed is 30rpm / min, weigh 35g of granules and heat press, heat press temperature is 180°C, press 0MPa for 5min, and press 5MPa for 5min, heat press to obtain 1mm×20cm×20cm sheet a;

[0035] S2: Weigh 35g of polyethylene, and heat-press according to the method of S1 to obtain a sheet b with a thickness of 1mm×20cm×20cm;

[0036] S3: Alternately place two thin plates a obtained in step S1 and two thin plates b obtained in step S2, and heat-press them into a four-layer alternating plate of 4mm×20cm×20cm. The temperature of the hot press is 180°C and the pressure is 5MPa...

Embodiment 3

[0039] A method for preparing a fireproof material with an alternating multilayer structure, comprising the following steps:

[0040] S1: Weigh 950g of maleic anhydride grafted polyethylene and 50g of nanometer montmorillonite, dry in an oven at 60°C for 12 hours, put them into a twin-screw extruder to melt, blend, extrude and granulate, the extrusion temperature is 190°C, and the screw Rotational speed is 25rpm / min, weigh 35g granules and heat-press, hot-press temperature is 180℃, pressure 0MPa for 5min, pressure 5MPa for 5min, heat-press to obtain 1mm×20cm×20cm sheet a;

[0041] S2: Weigh 990g of polyethylene and 10g of flame retardant, and heat press according to the method of S1 to prepare a sheet b with a thickness of 1mm×20cm×20cm;

[0042] S3: Place the two thin plates a obtained in step S1 and the two thin plates b obtained in step S2 alternately, and heat-press them into a four-layer alternating plate of 4mm×20cm×20cm. The temperature of the hot press is 180°C, and th...

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Abstract

The invention belongs to the technical field of fireproof materials, and provides a fireproof material with an alternate multilayer structure, which comprises at least two same or different material thin layers, and at least one material thin layer is formed by mixing a high-molecular polymer I and a nano additive or a flame retardant and then hot-pressing, and the other material thin layer is formed by mixing a high-molecular polymer II, a high-molecular polymer I and any one of a nano additive or the high-molecular polymer I and a flame retardant and then carrying out hot pressing. According to the invention, two same or different material thin layers are alternately stacked, the fireproof material with an alternate multilayer structure is prepared by hot pressing under the condition of reducing the content of a nano material and a flame retardant, the fireproof material has an excellent flame-retardant effect, certain material performance can be retained, the problems of large deviation of surface and matrix performance and the like are avoided, and the fireproof material has a good application prospect. And the problems in the prior art can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of fireproof materials, and in particular relates to a fireproof material with an alternate multilayer structure and a preparation method thereof. Background technique [0002] Adding nanomaterials or flame retardants to thermoplastic polymers can prepare composite materials with flame retardancy. The nanomaterials in the composite material produce flame retardant effect through heat insulation and gas insulation, etc., and the flame retardant is flame retardant through chemical means. However, if the addition amount of nanomaterials and flame retardants in the composite material is relatively low, there will be no strong flame retardant effect. If the addition amount is too high, the mechanical properties of the material and the properties of other materials will be affected. Therefore, new technologies are needed to improve the performance of materials. [0003] Another research on flame-retardant materi...

Claims

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Application Information

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IPC IPC(8): B32B27/38B32B27/32B32B27/08B32B37/06B32B37/10C08L51/06C08K3/34C08J5/18
CPCB32B27/38B32B27/32B32B27/08B32B37/10C08J5/18C08J2351/06C08K3/346
Inventor 吴英姬左世达夏常磊梅长彤何文蓝世雄
Owner NANJING FORESTRY UNIV
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