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High-viscosity oxidation-resistant heatproof waterproof sealant

A waterproof sealing and anti-oxidation technology, applied in polymer adhesive additives, non-polymer adhesive additives, adhesive types, etc., can solve the problem of poor anti-oxidation effect, short service life, and easy oxidation of materials problems, to achieve the effect of preventing cracking and peeling, improving service life and prolonging aging time

Inactive Publication Date: 2018-06-15
HEBEI JIASHICHENG ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional waterproof sealant is made of resin material, which has good bonding effect and excellent sealing and waterproof effect, but the anti-oxidation effect is poor, and it cannot withstand high ambient temperature. The material is easily damaged in a high-temperature and high-humidity environment. Oxidation, short service life, frequent maintenance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-viscosity anti-oxidation and heat-resistant waterproof sealant. According to the parts by mass, the waterproof sealant includes the following components: 35 parts of pure acrylic emulsion, 55 parts of acrylic emulsion, 16 parts of polyvinyl alcohol, and 3 parts of hydroxyethyl cellulose , 50 parts of kaolin, 18 parts of titanium dioxide, 20 parts of nano-calcium carbonate, 16 parts of polyurethane prepolymer, 6 parts of polypropylene fiber, 3 parts of tetralin, 3 parts of antioxidant, 2 parts of defoamer, film-forming aid 0.5 parts of the agent.

[0020] Among them, the preparation method of the polyurethane prepolymer in the composition is as follows: heat 40 parts of polyether polyol to 90-110 ° C, dehydrate under vacuum, then lower the temperature to room temperature, and add 80-95 parts of toluene diisocyanate , and reacted at a constant temperature of 80°C for 3 hours. During the reaction, 15 parts of dichloromethane solvent and 1 part of triethylenediamine ...

Embodiment 2

[0024] A high-viscosity anti-oxidation and heat-resistant waterproof sealant. According to the parts by mass, the waterproof sealant includes the following components: 40 parts of pure acrylic emulsion, 60 parts of acrylic emulsion, 20 parts of polyvinyl alcohol, and 5 parts of hydroxyethyl cellulose , 70 parts of kaolin, 22 parts of titanium dioxide, 25 parts of nano-calcium carbonate, 18 parts of polyurethane prepolymer, 8 parts of polypropylene fiber, 4 parts of tetralin, 5 parts of antioxidant, 4 parts of defoamer, film-forming aid 1 dose.

[0025] Among them, the preparation method of polyurethane prepolymer in the composition is as follows: heat 50 parts of polyether polyol to 110 ° C, dehydrate under vacuum, then lower the temperature to room temperature, and add 95 parts of toluene diisocyanate, at 90 ° C React at a constant temperature for 5 hours. During the reaction, 20 parts of dichloromethane solvent and 3 parts of triethylenediamine were added as catalysts. After...

Embodiment 3

[0029] A high-viscosity anti-oxidation and heat-resistant waterproof sealant. According to the parts by mass, the waterproof sealant includes the following components: 37 parts of pure acrylic emulsion, 58 parts of acrylic emulsion, 17 parts of polyvinyl alcohol, and 4 parts of hydroxyethyl cellulose , 60 parts of kaolin, 20 parts of titanium dioxide, 23 parts of nano-calcium carbonate, 17 parts of polyurethane prepolymer, 7 parts of polypropylene fiber, 3.5 parts of tetralin, 4 parts of antioxidant, 3 parts of defoamer, film-forming aid 0.7 part of the agent.

[0030] Among them, the preparation method of polyurethane prepolymer in the composition is as follows: heat 45 parts of polyether polyol to 100 ° C, dehydrate under vacuum, then lower the temperature to room temperature, and add 90 parts of toluene diisocyanate, at 85 ° C The reaction was carried out at a constant temperature for 4 hours. During the reaction, 17 parts of dichloromethane solvent and 2 parts of triethyle...

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Abstract

The invention belongs to the technical field of waterproof materials and particularly relates to a high-viscosity oxidation-resistant heatproof waterproof sealant. The waterproof sealant comprises thefollowing components: a pure acrylic emulsion, ab acrylic emulsion, polyvinyl alcohol, hydroxyethyl cellulose, kaolin, titanium dioxide, nano calcium carbonate, polyurethane prepolymer, a polypropylene fiber, tetrahydronaphthalene, antioxidant, a defoamer, and a coalescing agent, wherein the polypropylene fiber is a staple fiber, the length specification of the fiber is 3-6 mm; the antioxidant ishindered phenol antioxidant; the defoamer is organosilicone defoamer; and the coalescing agent is propanediol butyl ether or propylene glycol methyl ether acetate. The waterproof sealant is excellentin adhesive property and sealing impermeability as well as heat resistance and oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials, and in particular relates to a high-viscosity anti-oxidation heat-resistant waterproof sealant. Background technique [0002] In today's urban infrastructure construction, in order to keep the road surface safe and tidy, all water, electricity, gas, and heat pipes are buried underground. In some relatively developed cities, special underground pipe galleries are even built underground. Lay out various pipelines. In the underground laying of power cables and signal optical cables, in order to protect the safety of the lines, the lines will be penetrated into the protective casing. During the laying of the protective casing, multiple pipes need to be connected as a whole. Common nodes can be connected by welding. , For special joints, connectors need to be installed, and a special waterproof sealant is required to seal the connector position. The sealing and impermeability performance...

Claims

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Application Information

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IPC IPC(8): C09J133/04C09J129/04C09J175/08C09J123/12C09J11/08C09J11/04C08G18/76C08G18/48
CPCC09J133/04C08G18/48C08G18/7614C08K2003/2241C08K2003/265C08K2201/011C08L2201/08C08L2205/025C08L2205/035C08L2205/16C09J11/04C09J11/08C08L33/04C08L29/04C08L1/284C08L75/04C08L23/12C08K13/02C08K3/346C08K3/22C08K3/26
Inventor 白莉莉
Owner HEBEI JIASHICHENG ENERGY TECH CO LTD
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