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One-way moisture-conducting waterproof material and preparation method thereof

A waterproof material, moisture technology, used in chemical instruments and methods, film/sheet adhesives, synthetic resin layered products, etc. The problem of high permeability has the effect of reducing installation time and cost, and simplifying the construction process of waterproof sealing of gaps.

Active Publication Date: 2022-07-26
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its low tensile strength and high air permeability, it cannot be directly used as a building waterproof sealing membrane.

Method used

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  • One-way moisture-conducting waterproof material and preparation method thereof
  • One-way moisture-conducting waterproof material and preparation method thereof
  • One-way moisture-conducting waterproof material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 As shown, the unidirectional moisture-conducting waterproof material includes a waterproof reinforcing layer (1), a functional layer (2), an adhesive layer (3), a reinforcing layer (4), a pressure-sensitive adhesive layer (5) and a release paper (6).

[0024] The waterproof reinforcement layer (1) is a polyester non-woven fabric, the thickness of the polyester non-woven fabric is 100 μm, and the gram weight is 30 g / m 2 , The surface of the non-woven fabric is waterproof.

[0025] The functional layer (2) is a PTFE porous membrane, the fiber diameter of the PTFE membrane is 0.1-1 μm, the overall porosity is 50-75%, the thickness is 30 μm, and the gram weight is 15-20 g / m 2 .

[0026] The waterproof reinforcement layer (1) and the functional layer (2) are compounded by hot rolling. One side of the PTFE porous membrane and one side of the polyester non-woven fabric are fed into the hot rolling roll. The hot roll temperature is 250°C and the hot roll pressu...

Embodiment 2

[0031] like figure 1 As shown, the unidirectional moisture-conducting waterproof material includes a waterproof reinforcing layer (1), a functional layer (2), an adhesive layer (3), a reinforcing layer (4), a pressure-sensitive adhesive layer (5) and a release paper (6).

[0032] The waterproof reinforcement layer (1) is a polypropylene non-woven fabric, the thickness of the polypropylene non-woven fabric is 300 μm, and the gram weight is 100 g / m 2 , Because polypropylene itself is waterproof, no additional waterproof treatment is required.

[0033] The functional layer (2) is a PTFE porous membrane, the fiber diameter of the PTFE membrane is 0.1-1 μm, the overall porosity is 75-85%, the thickness is 50 μm, and the gram weight is 30-40 g / m 2 .

[0034] The waterproof reinforcement layer (1) and the functional layer (2) are compounded by hot rolling, and one side of the PTFE porous film and one side of the polypropylene non-woven fabric are fed into the hot rolling roll. The ...

Embodiment 3

[0039] like figure 1 As shown, the unidirectional moisture-conducting waterproof material includes a waterproof reinforcing layer (1), a functional layer (2), an adhesive layer (3), a reinforcing layer (4), a pressure-sensitive adhesive layer (5) and a release paper (6).

[0040] The waterproof reinforcement layer (1) is polyester / polypropylene meltblown cloth, the thickness of polyester / polypropylene meltblown cloth is 450μm, and the gram weight is 120g / m 2 , The mass ratio of polyester / polypropylene meltblown cloth is 70:30, because it contains polypropylene fiber, so polyester / polypropylene meltblown cloth is waterproof and does not need additional waterproofing treatment.

[0041] The functional layer (2) is a PTFE porous membrane, the fiber diameter of the PTFE membrane is 0.1-1 μm, the overall porosity is 85-90%, the thickness is 80 μm, and the gram weight is 60-70 g / m 2 ,

[0042] The waterproof reinforcement layer (1) and the functional layer (2) are compounded by h...

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Abstract

The invention discloses a waterproof material with unidirectional moisture conduction and a preparation method thereof. The waterproof material is composed of a waterproof reinforcement layer, a functional layer, an adhesive layer, a reinforcement layer, a pressure-sensitive adhesive layer and a release paper from top to bottom. The waterproof reinforcement layer is made of fiber cloth, and the functional layer is a PTFE porous membrane. , the adhesive layer is a polyurethane hot-melt adhesive, and the pressure-sensitive adhesive layer is a polyacrylate pressure-sensitive adhesive. The waterproof material of the invention has the characteristics of unidirectional moisture permeability, high weather resistance and ultraviolet resistance, and is suitable for bonding various base surfaces such as concrete, wood and aluminum profiles.

Description

technical field [0001] The invention belongs to the field of waterproof and energy-saving materials for buildings, and relates to a waterproof material with unidirectional moisture conduction and a preparation method thereof. Background technique [0002] Waterproof and vapor-permeable membrane is often used as a sealing material at the gap on the outdoor side of the outer protective structure of ultra-low energy consumption, prefabricated buildings, etc. Its function is to block the infiltration of rainwater into the room; at the same time, the water vapor accumulated in the outer protective wall is timely Expelling it out of the wall not only maintains the dry state of the thermal insulation layer to ensure its thermal insulation effect, but also avoids the phenomenon of dampness, condensation and mildew on the wall caused by the accumulation of water vapor. [0003] Existing waterproof and vapor-permeable membranes for construction can be divided into two categories: mole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/06B32B27/00C09J7/29C09J7/38C09J7/21C09J7/24
CPCC09J7/29C09J7/385C09J2400/263C09J2427/006C09J2433/00
Inventor 陈书云刘俊凯匡宁踪浩
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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