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A kind of pre-laid self-adhesive film composite waterproof sheet and its preparation method and application

A technology of self-adhesive film and waterproof sheet, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of aging resistance, low peel strength, low puncture resistance, etc., and achieve excellent Effects of aging resistance, simple preparation method, and excellent puncture strength

Active Publication Date: 2022-07-26
KESHUN WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of aging resistance, low peel strength and low puncture resistance existing in existing high-density polyethylene waterproof materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] According to another preferred embodiment, the method includes using a two-step method to prepare the pre-laid self-adhesive film roll composite waterproof sheet; the two-step method includes:

[0040] (I1) firstly pre-preparing the high-density polyethylene layer and the composite layer in a single extruder using the material for forming the composite layer and the material for forming the high-density polyethylene layer;

[0041] (I2) Compounding the high-density polyethylene layer and the compound layer by calender compounding.

[0042] According to another preferred embodiment, the method includes using a two-step method to prepare the pre-laid self-adhesive film roll composite waterproof sheet; the two-step method includes:

[0043] (II1) Using a twin extruder, applying the material for forming the high-density polyethylene layer in the first extruder to extrude the high-density polyethylene layer, and applying the material for forming the composite layer in the se...

Embodiment 1

[0069] A one-step method is used to prepare the pre-laid self-adhesive film composite waterproof sheet S1, and the method includes the following steps:

[0070] The vinyl polar copolymer Elvaloy 441 and high-density polyethylene I were placed in two extruders respectively, and the two extruders corresponded to the same extrusion die, in the same extrusion die. In-die melt co-extrusion was carried out, the barrel temperature was 200°C, the die temperature was 200°C, the calendering compound temperature was 60°C, the speed ratio of the two rolls was 1:1.05, and the extrusion speed was 4m / min; During the calendering process, a polyethylene terephthalate film with a thickness of 0.04mm is inserted between a composite layer with a thickness of 0.5mm and a high-density polyethylene layer with a thickness of 1mm, and cooled and shaped to obtain a pre-laid self-adhesive adhesive. Membrane membrane composite waterproof sheet S1.

Embodiment 2

[0072] Using a two-step method and a single extruder to prepare the pre-laid self-adhesive film roll material composite waterproof sheet S2, the method includes the following steps:

[0073] (I1) First, the vinyl polar copolymer Elvaloy 441 and the high-density polyethylene I were respectively used to pre-prepare a high-density polyethylene layer I with a thickness of 1 mm and a composite layer I with a thickness of 0.5 mm in a single extruder. The temperature is 200°C, the die temperature is 200°C, and the extrusion speed is 4m / min;

[0074] (I2) The high-density polyethylene layer I and the composite layer I are compounded by calendering compounding, the calendering compounding temperature is 60° C., and the speed ratio of the two rolls is 1:1.05; during the calendering process, the compound layer is A polyethylene terephthalate film with a thickness of 0.04 mm is inserted between the I and the high-density polyethylene layer I, and cooled and shaped to obtain a pre-laid sel...

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Abstract

The invention relates to the field of waterproof materials, in particular to a pre-laid self-adhesive film roll material composite waterproof sheet and a preparation method and application thereof. The composite waterproof sheet comprises a laminated composite layer and a high-density polyethylene layer, forming the composite The material of the layer is a vinyl polar copolymer, and the material forming the high-density polyethylene layer is high-density polyethylene. The pre-laid self-adhesive film roll composite waterproof sheet provided by the invention has excellent aging resistance, peeling strength and puncture resistance, and meanwhile, the preparation method is simple, pollution-free and environmentally friendly.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a pre-laid self-adhesive film roll material composite waterproof sheet and a preparation method and application thereof. Background technique [0002] High-density polyethylene, also known as low-pressure polyethylene, is a thermoplastic resin with high crystallinity and a certain degree of translucent non-polar surface. It has good heat resistance and cold resistance, good chemical stability, and high The rigidity and toughness, mechanical strength, dielectric properties, environmental stress crack resistance and other excellent characteristics. [0003] HDPE can be used for the main layer of non-asphalt-based polymer self-adhesive film to provide non-asphalt-based polymer self-adhesive film waterproofing membrane with tensile, tearing and puncture resistance properties; it can also be used for high-density polyethylene waterproofing Board and other high-density polyethylene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/30B32B27/36C08J5/18C08L23/08C08L23/06B29C48/00B29C48/08B29C48/18
CPCB32B27/08B32B27/32B32B27/306B32B27/30B32B27/36C08J5/18B29C48/0021B29C48/022B29C48/08B29C48/18C08J2323/08C08J2323/06B32B2307/7265
Inventor 胡全超龚兴宇
Owner KESHUN WATERPROOF TECH CO LTD
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