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Polyester waterproof ventilated membrane, three-layer compound material, preparation method and application thereof

A technology of waterproof, breathable and composite materials, which is applied in the direction of roof insulation materials, building insulation materials, chemical instruments and methods, etc., can solve the problems that have not been reported in public, and achieve the effect of excellent waterproof, breathable and moisture-permeable functions, and good strength performance

Active Publication Date: 2010-06-02
宁波曦昀高分子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] So far, there have been no public reports on the preparation of stretched porosity-type microporous membranes and their composites, where the polymer matrix used is a blend system of PET, PTT, PBT, and low-melting point polyester.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Use PET (PG620, Yizheng Chemical Fiber Co., Ltd.) 60Kg, PTT (FG30, U.S. Shell Company) 10Kg, PBT (B4406, Germany BASF) 10Kg with a polyester chip fluidized bed crystallization dryer (FBCD type, Zhangjiagang City Tenglong) Machinery Manufacturing Co., Ltd.) crystallization drying, the pre-crystallization temperature is 140°C, the time is 0.5 hours, the drying temperature is 160°C, the drying time is 4 hours, and the residual water content is <35ppm.

[0032]Dry and dehydrate 20Kg of PETG (0603, American Eastman Company) with a double-cone rotary vacuum dryer (GZS type, Hangzhou Qianjiang Drying Equipment Co., Ltd.), the ultimate vacuum is ≤ 3Pa, the drying temperature is 90-100 ° C, and the time is 4 hours. Residual water content ≤ 30ppm;

[0033] Dry and dehydrate 140Kg of heavy calcium carbonate (particle size 3-5 μm, HT-1500, Zhejiang Changxing Dadi New Material Co., Ltd.) with a double-cone rotary vacuum dryer (GZS type, Hangzhou Qianjiang Drying Equipment Co., Ltd.)...

Embodiment 2

[0038] PCTG (0618, U.S. Eastman Company) 20Kg substitutes the PETG in the embodiment 1 after the method drying dehydration of embodiment 1, all the other raw materials and used weight parts, dry dehydration, mixing, granulation, casting, stretching preparation The process and conditions of the microporous membrane and the preparation of the three-layer composite material are the same as in Example 1.

Embodiment 3

[0040] The montmorillonite (3~5 μm of particle size, JT-518, Jintai Bentonite Co., Ltd., Anji County, Zhejiang Province) 150Kg after the method drying dehydration of Example 1 replaces the heavy calcium carbonate in Example 1, with coupling agent vinyl Trimethoxysilane (A-171, Nanjing Yudeheng Fine Chemical Co., Ltd.) 2Kg replaces the coupling agent aluminate and titanate in Example 1, the rest of the raw materials and parts by weight, drying and dehydration, mixing, granulation , casting, stretching to prepare microporous film and prepare the technological process and conditions of three-layer composite material with embodiment 1.

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Abstract

The invention relates to a polyester micro-porous film having waterproof ventilating and drenching functions, a three-layer compound material, a preparation method and the application thereof. The blend of polyethylene glycol terephthalate, polyethylene terephthalates, Valox and low-melting polyester is the base of polymer. Inorganic filler and processing agent are added in order to prepare polyester micro-porous film having waterproof ventilating and drenching functions. Based on the softening point difference among the low-melting polyester in the polymer base of the micro-porous film and the PET, PTT and PBT, the high intensity three-layer compound material having waterproof, ventilating and drenching functions is prepared by hot-pressing the inner and outer layers of polyester non-woven fabrics, with a polyester micro-porous film in the middle layer. The compound material of the invention can be used as a waterproof ventilating and drenching cushion ply on a slope roof and also can be used as a waterproof drenching cushion ply on the inner side of the hanging type decoration materials on the outer wall of building.

Description

technical field [0001] The invention relates to a polyester microporous membrane with waterproof, breathable and moisture-permeable functions, and also relates to a three-layer composite material with the microporous membrane as the middle layer, its preparation method and application in the field of construction, belonging to the field of construction materials . Background technique [0002] The inner and outer layers are synthetic fiber non-woven fabrics, and the middle layer is a three-layer composite material of polymer-based waterproof, breathable, and moisture-permeable microporous membranes. Waterproof and frost-resistant waterproof and vapor-permeable lining for walls. For the above three-layer composite material, the inner and outer layers of synthetic fiber non-woven fabric are mainly used to reflect the strength, anti-aging and flame retardancy of the composite material. The middle layer is the most critical, it only allows gas molecules and water molecules to p...

Claims

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Application Information

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IPC IPC(8): C08L67/02B29C69/02B29C41/52B29C55/02B32B3/24B32B27/18E04D13/16E04B1/66
Inventor 孙建中叶泉友王依建
Owner 宁波曦昀高分子新材料有限公司
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