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Asphalt-based hot-melt pressure-sensitive adhesive and preparation method thereof

A hot-melt pressure-sensitive adhesive, asphalt-based technology, applied in the direction of asphalt material adhesives, adhesives, adhesive types, etc., can solve problems such as poor durability, weak joint bonding, and poor low-temperature viscosity. Achieve the effects of improved aging resistance, excellent stickiness and convenient production

Inactive Publication Date: 2014-08-06
宿迁金倍尔建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, looking at the current waterproof market in my country, most self-adhesive waterproof products have limited their scope of application due to their shortcomings such as poor viscosity at low temperature, easy sliding at high temperature, weak joint bonding, and poor durability.

Method used

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  • Asphalt-based hot-melt pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Add 300kg of 90# asphalt and 145kg of naphthenic oil into the reactor through a high-temperature liquid flowmeter. After heating to 200°C with a heat-conducting oil furnace, turn off the heating system, turn on the stirring and mixing system, and keep it for 60 minutes. Then add SBS75kg, EVA25kg, terpene resin 35kg, C5 petroleum resin 35kg, polyphosphoric acid 8kg. Stir at a high speed under the condition of 180-200°C, the stirring speed is 200-500 rpm, and the stirring time lasts for 30-90 minutes. The above-mixed materials are poured and ground through a high-speed shear mill, and the grinding time is 20-40 minutes. After grinding, add 70kg of precipitated silica and 8kg of 2,6-di-tert-butyl-p-cresol. Stirring was continued for 30 minutes. Keep the temperature at 150-180°C. Then it is poured into the coating tank through the heat preservation gear pump, scraped or rolled, and cooled to room temperature naturally.

example 2

[0025] Add 500kg of 90# asphalt and 240kg of naphthenic oil into the reactor through a high-temperature liquid flowmeter. After heating to 200°C with a heat-conducting oil furnace, turn off the heating system, turn on the stirring and mixing system, and keep it for 60 minutes. Then add SBS120kg, EVA40kg, terpene resin 50kg, C5 petroleum resin 50kg, polyphosphoric acid 11kg. Stir at a high speed under the condition of 180-200°C, the stirring speed is 200-500 rpm, and the stirring time lasts for 30-90 minutes. The above-mixed materials are poured and ground through a high-speed shear mill, and the grinding time is 20-40 minutes. After grinding, add 100kg of precipitated silica and 10kg of 2,6-di-tert-butyl-p-cresol. Stirring was continued for 30 minutes. Keep the temperature at 150-180°C. Then it is poured into the coating tank through the heat preservation gear pump, scraped or rolled, and cooled to room temperature naturally.

[0026] Material performance of the present i...

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Abstract

The invention discloses an asphalt-based hot-melt pressure-sensitive adhesive and a preparation method thereof. The asphalt-based hot-melt pressure-sensitive adhesive comprises the following ingredients in percentage by weight: 35-50% of asphalt, 10-20% of an asphalt modifier, 20-40% of a softener, 5-15% of a tackifier, 10-20% of a filler, 1-3% of a cross-linker and 0.5-1.5% of an antiager. The hot-melt pressure-sensitive adhesive is superior to an asphalt adhesive for a self-adhesion waterproof roll in performance, and has the advantages of low cost, convenient preparation and the like compared with hot-melt pressure-sensitive adhesives such as EVA (ethylene-vinyl acetate copolymer); meanwhile, the invention discloses the preparation method of the product, which is convenient to produce and can be produced by a traditional reaction kettle for producing a waterproof roll asphalt mixture without the need of a special precise reaction kettle for a hot-melt adhesive.

Description

technical field [0001] The present invention relates to the technical field of fine chemicals, in particular to a pitch-based hot-melt pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] With the continuous progress of my country's waterproof industry, more and more building waterproof projects use self-adhesive waterproof materials. Compared with traditional hot-melt construction, self-adhesive waterproof materials have good low-temperature flexibility, self-healing, and It has good bonding performance, can be constructed at room temperature, and the construction speed is fast, which meets the requirements of environmental protection. Especially in complex construction environments such as tunnels and subways, as well as waterproof and anti-corrosion projects such as oil and gas pipelines where open flames cannot be used, its advantages are more obvious. [0003] However, looking at the current waterproof market in my country, most se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J153/02C09J109/06C09J123/12C09J123/08C09J11/06C09J11/04E04D5/10
Inventor 朱森林刘新博
Owner 宿迁金倍尔建筑材料有限公司
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