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Waterproof and breathable composite film with high compressive strength

A compressive strength, waterproof and breathable technology, applied in the field of architectural films, can solve the problems of large gaps in inorganic nanoparticles, uneven dispersion of nanoparticles, affecting the breathability of membranes, etc. Effect

Inactive Publication Date: 2018-07-17
江苏科德宝建筑节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the large gap between the physical and chemical properties of inorganic nanoparticles and polymer materials, it is easy to form agglomeration on polymer materials after blending. The uneven dispersion of nanoparticles not only does not play a corresponding role, but also blocks the pores of the composite membrane. Affect the breathability of the membrane

Method used

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  • Waterproof and breathable composite film with high compressive strength
  • Waterproof and breathable composite film with high compressive strength
  • Waterproof and breathable composite film with high compressive strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A waterproof and breathable composite film with high compressive strength, comprising a non-woven fabric layer 1, a polymer film layer 2, and a fiber filament layer 3, and the material of the polymer film layer 2 is a PVDF film doped with inorganic nanoparticles 4 That is to say, inorganic nanoparticles 4 are added to the PVDF casting solution, so that the membrane filaments have strong mechanical properties on the basis of maintaining the excellent characteristics of PVDF. The polymer membrane layer 1 and the fiber filament layer 3 are bonded by common adhesive In conclusion, the polymer film layer 2 includes a nanoparticle polymer dispersant.

[0027] The inorganic nanoparticles 4 are SiO 2 , ZnO, TiO 2 any of the.

[0028] The nanoparticle polymer dispersant is polydimethylsiloxane.

[0029] The non-woven fabric layer is encapsulated outside the PVDF membrane by encapsulation technology.

[0030] The pore diameter of the non-woven fabric is 5-10um.

[0031] The ...

Embodiment 2

[0033] A waterproof and breathable composite film with high compressive strength, comprising a non-woven fabric layer 1, a polymer film layer 2, and a fiber filament layer 3, and the material of the polymer film layer 2 is a PVDF film doped with inorganic nanoparticles 4 , that is to add inorganic nanoparticles 4 into the PVDF casting solution, so that the membrane filaments have strong mechanical properties on the basis of maintaining the excellent characteristics of PVDF. The filament is uniformly wound on the outer surface of the PVDF filament to form a composite membrane material, and the polymer membrane layer 2 includes a nanoparticle polymer dispersant.

[0034] The inorganic nanoparticles (4) are SiO 2 , ZnO, TiO 2 any of the.

[0035] The nanoparticle polymer dispersant is polydimethylsiloxane.

[0036]The non-woven fabric layer is encapsulated outside the PVDF membrane by encapsulation technology.

[0037] The pore diameter of the non-woven fabric is 5-10um.

[...

Embodiment 3

[0040] A waterproof and breathable composite film with high compressive strength, comprising a non-woven fabric layer 1, a polymer film layer 2, and a fiber filament layer 3, and the material of the polymer film layer 2 is PVDF doped with inorganic nanoparticles 4 Membrane, that is, adding inorganic nanoparticles 4 into the PVDF casting solution, so that the membrane filaments have strong mechanical properties on the basis of maintaining the excellent characteristics of PVDF. The polymer membrane layer 2 and the fiber filament layer 3 are made of polymer PVDF raw materials After the liquid is evenly attached to the fiber filaments, the composite material is formed after spinning, so that the polymer film can be evenly wrapped on both sides of the fiber filaments, ensuring that PVDF is not easy to break during spinning, saving costs and improving work efficiency , the polymer film includes a nanoparticle polymer dispersant.

[0041] The inorganic nanoparticles 4 are SiO 2 , Zn...

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Abstract

The invention provides a waterproof and breathable composite film with high compressive strength. The composite film comprises non-woven fabric layers, a polymer film layer and fiber filament layers,the non-woven fabric layers are disposed on the upper and lower sides of the polymer film layer, the outer layers of the non-woven fabric layers are further provided with the fiber filament layers, the outer portions of the fiber filament layers are provided with resin layers, a plurality of through holes penetrating the thickness direction are formed in the composite film, the through holes penetrate through the composite film in dip direction perpendicular to the thickness, a polymer film layer material is a PVDF film doped with inorganic nanoparticles, and the polymer film layer is added with the inorganic nanoparticles. According to the obtained inorganic polymer composite film, cellulose fibers prevent interlayer peeling between fiber layers and non-woven fabric layers, and the existence of the through holes improves the gas permeability of the composite film.

Description

technical field [0001] The invention belongs to the technical field of architectural films, in particular to a waterproof and breathable composite film with high compressive strength. Background technique [0002] In the 1940s, German architects discovered that the self-adhesive and airtight characteristics of asphalt waterproofing membranes and coating waterproofing materials caused the residual moisture in the concrete structure to be sealed in the structure, and the water vapor in the concrete structure could not be emitted and thus It leads to the growth of mold on the roof and walls, and the indoor air quality and human health are seriously threatened. Therefore, the German construction industry began to use a roof cushion with breathable properties to replace self-adhesive membranes and coatings for waterproofing. This breathable cushion is laid on the roof base to quickly discharge the water vapor of the cast-in-place concrete roof panel. out, thus avoiding the growt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/18B32B27/12B32B3/24B32B33/00
CPCB32B27/304B32B3/266B32B27/12B32B27/18B32B33/00B32B2307/50B32B2307/54B32B2307/71B32B2307/724B32B2307/73
Inventor 万宝林
Owner 江苏科德宝建筑节能科技有限公司