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A self-cleaning anti-seepage waterproof sheet and its preparation method and application
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A technology of waterproof sheets and waterproof membranes, which is applied in the field of building materials, can solve the problems that waterproof membranes cannot achieve self-cleaning properties, and achieve the effects of improving surface self-cleaning, improving compactness, and reducing surface resistance
Active Publication Date: 2022-02-25
JIANGSU CANLON BUILDING MATERIALS
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However, in this patent, the polymer antistatic agent is used in the inner layer of the waterproof membrane, and the outer surface of the waterproof membrane still cannot achieve long-term self-cleaning
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Embodiment 1
[0071] The waterproof sheet of the present embodiment, its raw material composition is as shown in table 1, wherein,
[0072] The antioxidant is a combination of antioxidant 1010 and antioxidant 168 at a mass ratio of 1:1.
[0073] The white mother is obtained by granulating R105 and TPO (Vistamaxx 6202) at a mass ratio of 7:3 through a twin-screw extruder.
[0074] The antibacterial agent is J151.
[0075] It is prepared by the following method:
[0076] (1) Mix the antibacterial agent, antioxidant, and light stabilizer with part of the polymer elastomer, and extrude and granulate them separately through a twin-screw extruder to obtain antibacterial agent masterbatch, antioxidant masterbatch, and light stabilizer Agent masterbatch, wherein, in each masterbatch, the elastomer accounts for 70% of the masterbatch mass, the elastomer is fed through the main feeding port, the feeding speed is 30rpm, and the antibacterial agent or antioxidant or light stabilizer passes through th...
Embodiment 2
[0091] The waterproof composite sheet of this embodiment includes a base layer and a waterproof layer arranged on the base layer, wherein the raw materials for preparing the base layer are composed of the following components: 36 parts of PP, 54 parts of polymer elastomer, 12 parts of calcium powder, 0.2 parts Antioxidant and 1 part of white mother, wherein, calcium powder is Omyacab T1, and antioxidant is antioxidant 1010.
[0092] The raw materials for preparing the waterproof layer are shown in Table 4, wherein the specific materials of PP, polymer elastomer, COC, polymer antistatic agent, white masterbatch, antibacterial agent, antioxidant and light stabilizer in the waterproof layer are the same as those in the examples 1, and the specific selection of PP, polymer elastomer and white masterbatch in the base layer is the same as that of PP, elastomer and white masterbatch in the waterproof layer.
[0093] The waterproof composite sheet of this example is prepared by the fo...
Embodiment 3
[0099] The waterproof composite sheet of this embodiment has the same structure as in Example 2, the raw materials used to prepare the base layer are the same as in Example 2, the raw materials for preparing the waterproof layer are shown in Table 4, and the preparation method of the waterproof composite sheet is also the same as in Example 2.
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Abstract
The present invention relates to a self-cleaning anti-seepage waterproof sheet and its preparation method and application. The raw materials of the sheet include polypropylene resin, polymer elastomer, cycloolefin copolymer and polymer antistatic agent, wherein the The cycloolefin copolymer and the polymer antistatic agent account for 5-30% of the total mass of the raw materials of the sheet, and the mass ratio between the cycloolefin copolymer and the polymer antistatic agent is 0.1-10:1. The invention reduces the surface resistance by adding a polymer antistatic agent and a cycloolefin copolymer to the sheet mainly made of polypropylene resin and polymer elastomer, so that the surface of the sheet can achieve long-term stain-resistant and self-cleaning effects. It can also effectively improve the waterproof and permeability resistance of the overall material and maintain good mechanical properties. At the same time, the polymer antistatic agent and cycloolefin copolymer can also achieve a synergistic effect, improve the rigidity of the sheet surface, and improve surface self-cleaning effect.
Description
technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a self-cleaning anti-seepage waterproof sheet and a preparation method and application thereof. Background technique [0002] TPO waterproof membrane is used in exposed areas, with good weather resistance and aging resistance. However, TPO materials generally have a high surface resistance value, and the surface is prone to static electricity and dust absorption. [0003] In order to improve the surface stain resistance of the TPO membrane, a super-hydrophobic layer is usually formed on the surface of the TPO membrane. However, the super-hydrophobic surface is unavoidable to have a certain degree of lipophilicity, and the surface is easy to absorb oil, and further dust, water will adhere The contact angle is small, and it is difficult for rainwater to wash away the attached oil and dust, and it is difficult to maintain the purpose of long-term self-cleanin...
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