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Modified low-density polyethylene material, preparation method and application thereof

A low-density polyethylene, modified technology, used in chemical instruments and methods, other chemical processes, layered products, etc.

Inactive Publication Date: 2008-07-09
上海远盛建筑防水材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to disclose a modified low-density polyethylene material and its preparation method and application, so as to overcome the above-mentioned defects in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] formula:

[0031] Low density polyethylene with an average density of 0.925 45 parts

[0032] Polyethylene with an average density of 0.95 15 parts

[0033] EPDM rubber 10 parts

[0034] Toughened masterbatch 15 parts

[0035] Antioxidant 1010 0.5 parts

[0036] The preparation method of the said modified low-density polyethylene material of the present invention comprises the steps:

[0037] According to the proportion, each component is blended, melted, and extruded in a screw extruder, and the molten material is extruded and compounded with the polypropylene non-woven fabric using a three-roll compound machine to obtain the waterproof material; thickness is 0.65mm.

[0038] The blending temperature is 180°C, and the die head temperature is 225°C;

[0039] Using the method stipulated in GB18173.1-2000 to test, the results are as follows:

[0040] Tensile strength at break N / cm: (60°C) longitudinal 47, transverse 48;

[0041] Tensile strength at break N / cm: (25...

Embodiment 2

[0051] formula:

[0052] Low-density polyethylene with an average density of 0.925 60 parts

[0053] Polyethylene with an average density of 0.95 25 parts

[0054] Polyolefin 15 parts

[0055] Toughened masterbatch 10 parts

[0056] Antioxidant 1010 0.1 parts

[0057] The preparation method of the said modified low-density polyethylene material of the present invention comprises the steps:

[0058] According to the proportion, each component is blended, melted, and extruded in a screw extruder, and the molten material is extruded and compounded with the polypropylene non-woven fabric using a three-roll compound machine to obtain the waterproof material; thickness is 0.65mm.

[0059] The blending temperature is 170°C, and the die head temperature is 175°C;

[0060] The method specified in GB18173.1-2000 is used for detection, and the result is basically the same as that of Example 1.

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Abstract

The invention discloses a modified polyethylene material with low density and a process for preparation and the application of the invention. The components and weight part proportion comprise low-density polyethylene 45-60 portions whose density is 0.92-0.93, polyethylene 15-20 portions whose density is 0.94-0.96, acetic acid ethyenyl ester 10-15 portions, toughening master batch 10-15 portions and anti-oxidant 10100.1-0.5 portions. The modified polyethylene material with low density of the invention can be used to prepare water-proofing material. And the water-proofing material at least comprises two-layer polypropylene nonwoven and modified polyethylene material with low density which is arranged between the two-layer polypropylene nonwoven, which can be used to resist water for architecture. The invention adopts a process which is regulated by GB 18173.1-2000 to detect, the result shows that the properties of mechanical mechanics are excellent, the water-proof property of the invention is not only greatly better than the existing products, but also the weathering resistance, in particular to the characteristics of heat resistance are greatly improved. The invention can meet the requirements of the architecture filed.

Description

technical field [0001] The invention relates to a modified low-density polyethylene material and its preparation method and application, in particular to a modified low-density polyethylene material for preparing waterproof materials and its preparation method. Background technique [0002] The unmodified low-density polyethylene material has poor environmental resistance, especially poor high temperature resistance. It is used to prepare waterproof materials, which are prone to brittle cracks in environmental media and have a large shrinkage rate. Therefore, the waterproof material prepared by using this material When the material is used in the construction field, the toughness and rigidity cannot be well unified. When the temperature changes, it is easy to cause dimensional changes, which will cause water seepage in the building. The waterproof performance cannot meet the needs and must be improved. Contents of the invention [0003] The technical problem to be solved i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/10C09K3/18B32B27/06B32B5/22C08L31/04C08L23/16
Inventor 安冷
Owner 上海远盛建筑防水材料厂
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