Polyurethane self-adhesive film waterproof roll as well as preparation method and application thereof

A self-adhesive film, waterproof membrane technology, applied in the direction of adhesives, film/sheet release liners, modified epoxy resin adhesives, etc. The problems of poor permeability, mechanical properties and fatigue resistance can improve heat resistance, crosslink density, and high temperature resistance.

Pending Publication Date: 2022-04-22
合肥中科凯辰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems of poor flame retardancy, high temperature resistance, compactness, waterproof and impermeability, mechanical properties and fatigue resistance of existing polyurethane-based waterproof coils, the purpose of the present invention is to provide a polyurethane self-adhesive film waterproof coil Materials, preparation methods and their applications

Method used

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  • Polyurethane self-adhesive film waterproof roll as well as preparation method and application thereof
  • Polyurethane self-adhesive film waterproof roll as well as preparation method and application thereof
  • Polyurethane self-adhesive film waterproof roll as well as preparation method and application thereof

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preparation example Construction

[0032] The preparation method of the polyurethane self-adhesive film waterproof coiled material of this embodiment, comprises the following steps:

[0033] S1: Heat the self-adhesive to 125-155°C, and evenly coat the surface of one side of the epoxy-modified polyurethane film to obtain the coated epoxy-modified polyurethane film;

[0034] S2: 120~150℃, use the self-adhesive-coated side of the coated epoxy-modified polyurethane film obtained in S1 as the bonding surface, thermally compound it with the protective liner, and then undergo shaping cooling and curling treatment to obtain Polyurethane self-adhesive membrane waterproofing membrane.

[0035] The application of the polyurethane self-adhesive film waterproof coiled material of this embodiment in underground waterproofing projects.

Embodiment 1

[0037] S1: Disperse 10 parts of hydroxymethylphenylphosphinic acid in 20 parts of tetrahydrofuran in parts by mass, and mix with 40 parts of polyether polyurethane prepolymer, 15 parts of epoxy acrylate, and 5 parts of fluorinated epoxy resin After uniformity, heat to 50°C for pre-reaction for 0.5h, then raise the temperature to 70°C, add 1 part of bis-dimethylaminoethyl ether, heat and stir for 3h, then pour into the mold, heat and press at 90°C for 1h, and then heat up to Continue to heat and press at 130°C for 0.5h to make an epoxy-modified polyurethane film with a thickness of 0.2mm;

[0038] S2: Weigh 20 parts of epoxy acrylate resin, 8 parts of EVA resin, 6 parts of thermoplastic elastomer SBS, and 3 parts of styrene-butadiene rubber in order by mass parts, and then mix them uniformly to obtain self-adhesive glue;

[0039] S3: Heat the self-adhesive to 125°C, and evenly coat the surface of one side of the epoxy-modified polyurethane film with a coating thickness of 0.1 m...

Embodiment 2

[0042] S1: Disperse 12.5 parts of bis(4-carboxyphenyl)phenylphosphine oxide in 25 parts of tetrahydrofuran by mass parts, and then mix with 50 parts of polyether polyurethane prepolymer, 17.5 parts of epoxy acrylate, 7.5 parts of fluorinated After the epoxy resin is mixed evenly, heat it to 50°C for pre-reaction for 1 hour, then raise the temperature to 75°C, add 1.5 parts of bis-dimethylaminoethyl ether, keep warm and stir for 5 hours, then pour it into the mold, and heat and press at 100°C for 1.5 hours , and then heated up to 140°C to continue hot-press curing for 1 hour to make an epoxy-modified polyurethane film with a thickness of 0.4mm;

[0043] S2: Weigh 25 parts of epoxy acrylate resin, 10 parts of EVA resin, 8 parts of thermoplastic elastomer SBS, and 4 parts of styrene-butadiene rubber in order by mass parts, and then mix them uniformly to obtain self-adhesive glue;

[0044] S3: Heat the self-adhesive to 140°C, and evenly coat the surface of one side of the epoxy-mo...

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Abstract

The invention discloses a polyurethane self-adhesive film waterproof roll as well as a preparation method and application thereof. The polyurethane self-adhesive film waterproof roll sequentially comprises an epoxy modified polyurethane film, a self-adhesive layer and a protective liner from top to bottom, the preparation method of the epoxy modified polyurethane film comprises the following steps: dispersing 10-15 parts by mass of a reactive flame retardant in 20-30 parts by mass of tetrahydrofuran, uniformly mixing with 40-60 parts by mass of a polyurethane prepolymer, 15-20 parts by mass of epoxy acrylate and 5-10 parts by mass of fluorinated epoxy resin, heating to 50-55 DEG C, carrying out pre-reaction for 0.5-1 hour, heating to 70-80 DEG C, adding 1-2 parts by mass of bis (dimethylaminoethyl) ether, carrying out heat preservation and stirring reaction for 3-6 hours, and cooling to room temperature to obtain the epoxy modified polyurethane film. Pouring the mixture into a mold, carrying out hot-pressing curing for 1-3 hours at 90-110 DEG C, heating to 130-150 DEG C, and continuing hot-pressing curing for 0.5-1 hour, so as to obtain the epoxy modified polyurethane film. The thermal decomposition temperature of the prepared epoxy modified polyurethane film reaches 300 DEG C or above, and the epoxy modified polyurethane film can be used for a long time in a high-temperature environment of 150 DEG C and has high tension, high tensile force, water resistance, air permeability, obdurability, aging resistance, cold resistance and chemical corrosion resistance.

Description

technical field [0001] The invention belongs to the field of waterproof building materials, and also belongs to the field of synthesis of polyurethane flame-retardant waterproof coiled material, and specifically relates to a polyurethane self-adhesive film waterproof coiled material, a preparation method and an application thereof. Background technique [0002] Polymer waterproof membrane is light in weight, high in strength, low in energy consumption, and multi-functional. It can be used for single-layer waterproofing, and it has excellent resilience when used within the elastic limit range. It has rich colors and can beautify the environment. [0003] In recent years, the polymer self-adhesive waterproof membrane has developed rapidly both in terms of usage, production equipment, technology, and technology. At present, waterproof membranes on the market have poor bonding performance, low tear resistance, poor waterproof and anti-seepage performance, and poor hydrolysis res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/30C09J7/40C09J163/10C09J123/08C09J11/08C08G18/58C08G18/32C08G18/34E02D31/02
CPCC09J7/25C09J7/30C09J7/40C09J163/10C09J11/08C08G18/58C08G18/388C08G18/3889E02D31/025C09J2301/122C09J2301/408C09J2203/346C09J2475/006C08L23/0853C08L53/02C08L9/06
Inventor 胡先海徐德明
Owner 合肥中科凯辰新材料有限公司
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