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Low-bending-modulus high-molecular pre-laid waterproof coiled material and preparation method thereof

A technology of flexural modulus and waterproof membrane, which is applied to building insulation materials, roofs using flexible materials, and building components, etc. It can solve the problems of large flexural modulus of coiled materials, collapse of lap joints, and difficulties in construction work, etc. problems, to achieve the effect of improving elongation performance, high elongation, and reducing the risk of cracking of lapped edges

Active Publication Date: 2022-01-14
河南华瑞兴业防水科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer self-adhesive film is mainly made of high-density polyethylene because of its own material. HDPE has high rigidity and toughness, and excellent mechanical properties, but it also causes the bending modulus of the coil to be too large. The bonded part collapses, and the waterproof fails
In addition, it also caused great difficulties to the construction work of yin and yang corners, pile heads and other parts.

Method used

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  • Low-bending-modulus high-molecular pre-laid waterproof coiled material and preparation method thereof
  • Low-bending-modulus high-molecular pre-laid waterproof coiled material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The main sheet of the low flexural modulus polymer pre-laid waterproof membrane of the present embodiment is composed of the following mass fraction components:

[0036] Linear low density polyethylene, 65 parts, density 0.918 g / cm 3 , Melt flow rate 1.8 g / 10min;

[0037] Block copolymer polypropylene, 15 parts, density 0.90g / cm 3 , Melt flow rate 2.20g / 10min;

[0038] Calcium carbonate masterbatch, 10 parts, carrier content 15%, melt flow rate 5.3g / 10min;

[0039] Compatibilizer, 10 parts, density 0.90g / cm 3 , Melt flow rate 3g / 10min;

[0040] The specific preparation method of the low flexural modulus polymer pre-laid waterproof membrane in the present embodiment comprises the following steps:

[0041] (1) drying and stirring

[0042] Add the measured materials into the drying and mixing tank in turn through the screw conveying device, adjust the air volume and temperature of the fan to deliver hot air, start stirring, keep the temperature at 105°C and stir for ...

Embodiment 2

[0052] Different from Example 1, the main sheet of the low flexural modulus polymer pre-laid waterproof membrane in this example is composed of the following mass fraction components:

[0053] Linear low density polyethylene, 55 parts, density 0.920 g / cm 3 , Melt flow rate 1.9g / 10min;

[0054] Block copolymer polypropylene, 20 parts, density 0.90g / cm 3 , Melt flow rate 2.30g / 10min;

[0055] Calcium carbonate masterbatch, 15 parts, carrier content 17%, melt flow rate 5.5g / 10min;

[0056] Compatibilizer, 10 parts, density 0.90g / cm 3 , Melt flow rate 3.2g / 10min.

Embodiment 3

[0058]Different from Example 1, the main sheet of the low flexural modulus polymer pre-laid waterproof membrane in this example is composed of the following mass fraction components:

[0059] Linear low density polyethylene, 50 parts, density 0.930 g / cm 3 , Melt flow rate 2.3g / 10min;

[0060] Block copolymer polypropylene, 25 parts, density 0.90g / cm 3 , Melt flow rate 2.60g / 10min;

[0061] Calcium carbonate masterbatch, 15 parts, carrier content 17%, melt flow rate 5.4g / 10min;

[0062] Compatibilizer, 10 parts, density 0.90g / cm 3 , Melt flow rate 3.6g / 10min.

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Abstract

The invention discloses a low-bending-modulus high-molecular pre-paving waterproof coiled material, which is a multi-layer composite waterproof material with excellent performance and is researched and developed specially for engineering parts needing to be constructed by a pre-paving method in underground engineering. A main body sheet of the coiled material mainly comprises the following components in parts by mass: 40 to 65 parts of linear low-density polyethylene, 15 to 30 parts of polypropylene, 10 to 20 parts of a compatibilizer and 10 to 20 parts of a calcium carbonate master batch. During preparation, the components are fully dried and mixed, melted at high temperature, extruded and molded, and glue and sand are coated to prepare the low-bending-modulus high-molecular pre-paved waterproof coiled material. The method is simple in production process and low in cost; the extension performance, aging resistance and stability are excellent, and the coiled material is soft and easy to install; the material is also environment-friendly; and the material with excellent performance is suitable for construction of underground engineering needing a pre-paving method.

Description

technical field [0001] The invention relates to a polymer pre-paved waterproof coiled material, in particular to a main body sheet and a preparation method of a polymer pre-coated waterproof coiled material with a low flexural modulus, and belongs to the field of building waterproof materials. The waterproof coiled material of the present invention is suitable for use in It is used for the construction of polymer self-adhesive film waterproofing membrane for the basement or semi-basement floor waterproofing project of general civil and industrial buildings. Background technique [0002] Building waterproof materials are the basis of building waterproofing projects, and their quality directly affects the quality of building waterproofing projects and the service life of buildings. Underground waterproofing is the focus and difficulty of building waterproofing. At present, the most widely used method is pre-laying anti-adhesive polymer self-adhesive film. Pre-paved polymer se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L53/00C08K9/12C08K3/26E02D31/02E04B1/66E04D5/10
CPCC08L23/0815E04B1/665E02D31/02E04D5/10C08K2003/265C08L53/00C08K9/12C08K3/26
Inventor 欧阳宗将赵国武吴强赵春华
Owner 河南华瑞兴业防水科技有限公司
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