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High puncture strength and high polarity flame retardant waterproof sheet and preparation method thereof

A technology of waterproof sheet and puncture strength, which is applied in the field of high puncture resistance, high polarity flame retardant waterproof sheet and its preparation, and waterproof coiled material. Separate from the adhesive layer, use open flame, electric welding and other problems to avoid risks, improve bonding performance, and overcome the effects of non-refractory

Active Publication Date: 2020-12-08
JIANGSU CANLON BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface polarity of polyolefin materials such as PE and TPO is extremely low, the surface energy of the sheet is low, and the wettability is poor, which seriously affects the bonding of the hot-melt pressure-sensitive adhesive and the sheet, resulting in water leakage.
[0004] (2) During the construction process, due to damage by hard objects such as steel bars or the occurrence of foundation settlement, the materials are damaged and water leakage points are generated.
[0005] (3) HDPE itself has good resistance to high and low temperatures. The polymer self-adhesive film waterproof membrane produced is often used in different occasions, even in special occasions such as nuclear power. However, open flames and electric welding are sometimes used on the construction site. There are safety hazards such as fire
However, the tensile strength of the waterproof sheet layer is only 24MPa, and there is still a risk of separation of the sheet and the adhesive layer, and it does not have fire resistance, which poses a safety hazard

Method used

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  • High puncture strength and high polarity flame retardant waterproof sheet and preparation method thereof
  • High puncture strength and high polarity flame retardant waterproof sheet and preparation method thereof
  • High puncture strength and high polarity flame retardant waterproof sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a high puncture strength and high polarity flame-retardant waterproof sheet, its raw material composition and dosage refer to Table 1, wherein,

[0030] High-density polyethylene (HDPE): the density is 948kg / m 3 1. HDPE with a melt index of 10g / 10min comes from Qilu Petrochemical Company, and its brand name is 6098.

[0031] Linear Low Density Polyethylene (LLDPE): Density 920kg / m 3 , LLDPE with a melt index of 0.9g / 10min, from Shanghai Secco Company, the brand name is 0209AA.

[0032] Metallocene-catalyzed linear low-density polyethylene (MLLDPE): the density is 918kg / m 3 , MLLDPE with a melt index of 1.0g / 10min, from Exxon Mobil Corporation, the brand is 3518.

[0033] Modified resin: maleic anhydride grafted polyethylene, sourced from Nanjing Qiangren Plastic Co., Ltd., the brand is MHDPE.

[0034] Flame retardant: bromine-antimony flame retardant system, from Guangzhou Qiyuan New Material Co., Ltd., the brand is WT-S083.

[0035] The wa...

Embodiment 2

[0039] This example provides a flame-retardant waterproof sheet with high puncture strength and high polarity. Except for the following raw materials, the selection of other raw materials is the same as in Example 1. The dosage of each component is shown in Table 1. Among them,

[0040] High-density polyethylene (HDPE): the density is 950kg / m 3 , HDPE with a melt index of 0.8-1.2g / 10min, from Lanzhou Petrochemical Company, the brand is 5000S.

[0041] Linear Low Density Polyethylene (LLDPE): Density 920kg / m 3 , LLDPE with a melt index of 1.8g / 10min, from Lanzhou Petrochemical Company, the brand is 7042.

[0042] Metallocene-catalyzed linear low-density polyethylene (MLLDPE): the density is 927kg / m 3 1. MLLDPE with a melt index of 1.3g / 10min comes from Exxon Mobil Corporation, and its brand name is 1327HA.

[0043] Modified resin: maleic anhydride grafted ethylene-vinyl acetate copolymer, sourced from Nanjing Sutai Polymer Technology Co., Ltd., the brand is EVA-G-3.

[0044...

Embodiment 3

[0046] This example provides a flame-retardant waterproof sheet with high puncture strength and high polarity. Except for the following raw materials, the selection of other raw materials is the same as in Example 1. The dosage of each component is shown in Table 1. Among them,

[0047] Modified resin: chlorinated polyethylene, from Weifang Yaxing Chemical Co., Ltd., the brand is 5236.

[0048] The preparation method of the waterproof sheet is the same as in Example 1.

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Abstract

The invention relates to a flame-retardant waterproof sheet material with high anti-puncture strength and high polarity and a preparation method thereof. The waterproof sheet material has a raw material formula composed of the following components in percentages by weight: 10 to 30% of high-density polyethylene, 0 to 10% of linear low-density polyethylene, 30 to 60% of metallocene catalytic linearlow-density polyethylene, 10 to 20% of modified resin and 5 to 15% of a flame retardant, wherein the modified resin is resin containing polar groups. The waterproof sheet material provided by the invention is prepared with the high-density polyethylene and the metallocene catalytic linear low-density polyethylene as matrix resin by adding the modified resin and the flame retardant as auxiliary materials, so the waterproof sheet material has high anti-puncture strength, excellent tensile properties and elongation rate; flame-retardant performance is obtained; meanwhile, the polarity of the surface of the waterproof sheet material is improved; surface energy is enlarged; the wettability is enhanced; and the adhesive properties between the waterproof sheet material and an adhesive layer areimproved.

Description

technical field [0001] The invention belongs to the technical field of underground waterproofing, and is used as a main material of polymer self-adhesive film waterproofing coiled material in the building waterproofing industry, in particular to a high-puncture-resistant, high-polarity flame-retardant waterproofing sheet, a preparation method thereof, and a waterproofing coiled material . Background technique [0002] In the prior art, waterproof concrete is generally used for the main structure of the underground waterproofing project, and the main material layer of the waterproof material is often laid on the water-facing surface of the concrete structure. But there are still the following problems: [0003] (1) The main material of polymer self-adhesive waterproof membrane is HDPE as the main material, supplemented by LDPE or LLDPE for toughening and modification through extrusion. However, the surface polarity of polyolefin materials such as PE and TPO is extremely low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/06C08L23/28C08K9/10B29C69/00B29B7/00B29C59/04B29C48/07B29C48/92
Inventor 李忠人赵祖兵李伟蔡健
Owner JIANGSU CANLON BUILDING MATERIALS
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