Pre-laid self-adhesive film coiled material composite waterproof sheet as well as preparation method and application thereof

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 low peel strength, aging resistance, and low puncture resistance, and achieve the goal of preparing The effect of simple method, excellent aging resistance and excellent puncture strength

Active Publication Date: 2021-12-14
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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  • Pre-laid self-adhesive film coiled material composite waterproof sheet as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

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

[0040] (I1) first applying the material forming the composite layer and the material forming the high-density polyethylene layer to prepare the high-density polyethylene layer and the composite layer in advance in a single extruder;

[0041] (I2) Composite the high-density polyethylene layer and the composite layer by calendering.

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

[0043] (II1) Adopting twin extruders, extruding the material forming the high-density polyethylene layer in the first extruder to form the high-density polyethylene layer, and applying the material forming the composite layer in the second extruder extruding in...

Embodiment 1

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

[0070] Vinyl polar copolymer Elvaloy 441 and high-density polyethylene I are respectively placed in two extruders, and the two extruders correspond to the same extrusion die head, and in the same extrusion die head In-mold melt co-extrusion is carried out, the barrel temperature is 200°C, the die head temperature is 200°C, the calendering composite temperature is 60°C, the speed ratio of the two rolls is 1:1.05, and the extrusion speed is 4m / min; During the calendering process, insert a polyethylene terephthalate film with a thickness of 0.04mm between the composite layer with a thickness of 0.5mm and the high-density polyethylene layer with a thickness of 1mm, cool and set it, and obtain a pre-laid self-adhesive adhesive Membrane composite waterproof sheet S1.

Embodiment 2

[0072] Adopt two-step method and single extruder to prepare pre-paved self-adhesive film roll composite waterproof sheet S2, the method comprises the following steps:

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

[0074] (I2) Composite the high-density polyethylene layer I and the composite layer I by calendering. The calendering composite temperature is 60° C., and the speed ratio of the two rolls is 1:1.05; A polyethylene terephthalate film with a thickness of 0.04 mm was inserted between I and the high-density polyethylene layer I, cooled and shaped to obtain a pre-laid self-adhesive film roll composite waterproof sheet S2.

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Abstract

The invention relates to the field of waterproof materials, in particular to a pre-laid self-adhesive film coiled material composite waterproof sheet and a preparation method and application thereof.The composite waterproof sheet comprises a composite layer and a high-density polyethylene layer which are arranged in a stacked mode, and the material for forming the composite layer is a vinyl polar copolymer; and the high-density polyethylene layer is made of high-density polyethylene. The pre-laid self-adhesive film coiled material composite waterproof sheet provided by the invention has excellent aging resistance, peel strength and puncture resistance, and meanwhile, the preparation method is simple, pollution-free and environment-friendly.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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