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Size-stable seawater impermeable material and preparation method thereof

A dimensionally stable, waterproofing membrane technology, applied in the field of seawater anti-seepage waterproofing membrane and its preparation, can solve the problems affecting the scope of application, difficulty in simultaneously improving the dimensional stability and mechanical properties of PE-HD, poor stability of the waterproofing membrane, etc. , to achieve the effect of reducing the impact of construction errors

Inactive Publication Date: 2019-06-14
SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are difficult to improve the dimensional stability and mechanical properties of PE-HD at the same time, resulting in poor stability of the waterproof membrane made of PE-HD, which affects its application range

Method used

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  • Size-stable seawater impermeable material and preparation method thereof
  • Size-stable seawater impermeable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: PE-HD / EPDM rubber powder is combined to prepare a waterproof membrane with good dimensional stability

[0026] The produced waterproof membrane contains the following components (wt.%): PE-HD:6898, Sinopec Yangzi Petrochemical Co., Ltd.; EPDM rubber 3960Q, Lanxess, Germany; PE-HD-g-MAH, self-made; white Carbon black, Degussa; ethylene vinyl acetate, commercially available general product; softener MESAMOLL, commercially available general product. The ratio is (parts by weight): 60:15:1.5:20:1:2.5. The specific production steps are as follows:

[0027] 1. Preparation of PE-HD-g-MAH. First, add 100 parts by mass of PE-HD, 3 parts by mass of MAH and 100 parts by mass of solvent acetone into a four-necked flask, gradually increase the temperature and heat to 115° C., and cool to room temperature naturally after the solvent. Then add 3 parts by mass of dodecylbenzenesulfonic acid (interface agent C18H30O3S), and heat up again, and add 0.3 parts by mass of initi...

Embodiment 2

[0030] Example 2: PE-HD / EPDM rubber is used to prepare a waterproof membrane with good dimensional stability

[0031] PE-HD: 6898; EPDM rubber; PE-HD-g-MAH; All the other are the same as in Example 1.

Embodiment 3

[0032] Embodiment 3: PE-HD / EPDM rubber is used to prepare waterproof membrane with good dimensional stability

[0033] PE-HD: 6898; EPDM rubber; PE-HD-g-MAH; white carbon black; ethylene vinyl acetate; All the other are identical with embodiment 1.

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Abstract

The invention discloses a seawater impermeable PE-HD waterproof coiled material with small temperature deformation resistance and a preparation method of the seawater impermeable PE-HD waterproof coiled material. According to the method, a certain amount of EPDM rubber powder is added, PE-HD-g-MAH is used as a compatilizer, mixing and co-melting are conducted by using a double-screw extrusion mode, and finally extruding and tabletting are performed to prepare the coiled material. Compared with a traditional PE-HD waterproof coiled material, the waterproof coiled material prepared by the methoddisclosed by the invention has the advantages that the defects that the traditional PE-HD waterproof coiled material is large in deformation and poor in waterproof effects in the laying process are overcome, the size change can be within 3.5% under the temperature change condition of 35-60 DEG C, the tensile strength and the tear resistance are improved, other mechanical properties are relativelygood, and the using standard of the waterproof coiled material is met.

Description

technical field [0001] The invention relates to a seawater anti-seepage and waterproof membrane with low temperature resistance and deformation and its preparation method. In the method, a certain amount of EPDM rubber component is added to the traditional PE-HD material. The addition of this rubber component can change the PE-HD material. HD material crystallinity, so when the environmental conditions change, the change in material size is reduced when it is affected by the temperature field. This technology solves the impact of the size change of the building waterproof membrane during laying, improves the construction efficiency and quality, and can be widely used in public buildings. Background technique [0002] PE-HD is currently the most widely used waterproof membrane material in China. It has the advantages of good waterproof performance, low cost, and convenient laying. However, traditional PE-HD materials are more sensitive to temperature changes, and are easily ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/16C08L51/06C08L23/08C08K3/36C08J5/18
Inventor 李定林陈满彭鹏向正林徐玮辰刘伟
Owner SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
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