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High-strength composite material for breathable film and preparation method thereof

The technology of composite material and breathable film is applied in the field of composite material for high-strength breathable film and its preparation, which can solve the problems of complex production process, low strength and high cost, and achieve the effects of simple production process, high strength and low cost

Inactive Publication Date: 2018-10-09
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent Publication No. CN105268013A provides a breathable and waterproof cast film material, which uses high-pressure polyethylene, low-pressure polyethylene, linear polyethylene, metallocene, polypropylene and additives to blend, and the obtained cast film is relatively soft, but its poor strength
[0008] Therefore, although the above-mentioned documents disclose different air-permeable membranes, there are still defects such as complicated production process, high cost and low strength.

Method used

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  • High-strength composite material for breathable film and preparation method thereof
  • High-strength composite material for breathable film and preparation method thereof
  • High-strength composite material for breathable film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take the raw materials by weighing the components and proportioning ratio (parts by weight) in Table 1

[0036] Mix in a high mixer for 5 minutes, mix the above raw materials evenly, and extrude the mixed blend through a twin-screw extruder to granulate. The temperature of each zone of the extruder is 150°C from the feeding section to the head. . The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.

Embodiment 2

[0038] Take the raw materials by weighing the components and proportioning ratio (parts by weight) in Table 1

[0039] Mix in a high mixer for 10 minutes, mix the above raw materials evenly, and extrude the mixed blend through a twin-screw extruder to granulate. The temperature of each zone of the extruder is 170°C from the feeding section to the head. . The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.

Embodiment 3

[0041] Take the raw materials by weighing the components and proportioning ratio (parts by weight) in Table 1

[0042] Mix in a high mixer for 15 minutes, mix the above raw materials evenly, and extrude the mixed blend through a twin-screw extruder to pelletize. The temperature of each zone of the extruder is 150°C from the feeding section to the head. . The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.

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Abstract

The invention discloses a high-strength composite material for a breathable film and a preparation method thereof. The high-strength composite material is prepared by performing mixing and extrusion granulating on the following components in parts by weight: 21-44 parts of bimodal polyethylene, 8-15 parts of metallocene polyethylene, 3-8 parts of high-density polyethylene, 45-55 parts of inorganicfiller, 0.1-1 part of antioxidant, 0.5-1 part of lubricant and 0.2-1 parts of coupling agent. According to the composite material for the breathable film, bimodal polyethylene is selected as a base material, the puncture resistance of a product is adjusted by using metallocene polyethylene, so that the prepared composite material not only can fully exert the characteristics of high strength and the like of the high molecular weight in bimodal polyethylene, but also has good puncture resistance of metallocene polyethylene, and the prepared film has waterproof and breathable functions and veryhigh water vapor permeability which exceeds 2000 g / m<2> / 24h; and the composite material is suitable for being used as a back material of paper diapers, sanitary napkins and the like, so that the use comfort can be improved, and the air permeability can be ensured.

Description

technical field [0001] The invention relates to the technical field of modified materials, in particular to a composite material for a high-strength breathable membrane and a preparation method thereof. Background technique [0002] Waterproof and breathable membranes are commonly used consumer products in daily life. For example, waterproof and breathable membranes can be made into linings, plastic paper, packaging bags, diapers, diapers, bandages, sanitary napkins, surgical drapes, etc. [0003] Those skilled in the art know that a waterproof and breathable membrane can be prepared by mixing thermoplastic polymers with fillers, and then stretching the breathable membrane so that voids are formed near filler particles to achieve breathability. [0004] With the development of use requirements, the market requires that the thickness of the breathable membrane should be reduced, even below 20g / ㎡ to reduce the product cost. At the same time, the reduction of the weight of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K3/26C08K5/134C08K5/10C08K5/544C08K5/098C08K5/20C08K5/526C08J5/18
CPCC08J5/18C08L23/06C08L2205/03C08L2205/025C08L2203/16C08J2423/06C08J2323/06C08L2207/062
Inventor 杨桂生廖雄兵朱敏计娉婷
Owner HEFEI GENIUS NEW MATERIALS
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