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A new type of low-smoke environmental protection non-curing rubber asphalt waterproof coating preparation method

A technology of asphalt waterproof coating and non-curing rubber, which is applied in the direction of asphalt coating, fireproof coating, coating, etc. It can solve the problems of rubber and resin pungent smell, asphalt smoke pungent smell, and no peculiar smell, so as to suppress smoke , reduce energy consumption, and reduce the temperature of the production process

Active Publication Date: 2019-09-03
北新防水(河南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the construction temperature of most non-curing rubber asphalt waterproof coatings on the market is generally between 170-200°C (the setting temperature of the heating equipment is generally 180-220°C). When the temperature is too low, there will be a lot of adhesion due to the large amount of elastomer modifier inside the coating, resulting in difficulty in construction
Moreover, most manufacturers did not consider the peculiar smell during construction when designing the formula, and added a large amount of styrene-butadiene rubber and tackifying resins (C5, C9, terpene resin, rosin resin, etc.), resulting in not only asphalt The pungent smell of smoke, and the pungent smell of a lot of pungent rubber and resin
What's more, in order to meet the low temperature requirements of non-curing rubber asphalt waterproof coatings at -20°C and reduce costs, some manufacturers add a large amount of waste engine oil or other mineral oils. This kind of product cannot avoid the generation of peculiar smell at the construction temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0043] Using the first group of raw materials, follow the steps below to make 1-1 product.

[0044] a. Pour asphalt and polybutadiene liquid rubber into the batching tank, heat up to 110°C for dehydration for 30 minutes and stir evenly at a stirring rate of 20HZ;

[0045] b. Add styrene-isoprene-styrene block copolymer to the bitumen generated in step a, keep the temperature at 160°C for 1 hour, and stir at a rate of 20HZ until it swells completely;

[0046]c. Grind the mixture generated in step b with a colloid mill, and the gap between the colloid mill is required to be no more than 0.1mm

[0047] d. Add sericite powder and talc powder to the ground mixture in step c, and keep stirring for 1 hour at a stirring rate of 20HZ until the mixture is uniform, and at the same time cool down to 120°C;

[0048] e. Add aluminum hydroxide powder and sasobit asphalt modifier to the mixture generated in step d, keep the temperature at 120°C for 0.5 hours, and stir at a rate of 20HZ until...

Embodiment 1-2

[0051] Using the first group of raw materials, follow the steps below to make 1-2 products.

[0052] a. Pour the asphalt and polybutadiene liquid rubber into the batching tank, heat up to 110°C for 30 minutes, and stir evenly at a stirring rate of 44HZ;

[0053] b. Add styrene-isoprene-styrene block copolymer to the bitumen generated in step a, keep the temperature at 168°C for 2.0 hours, and stir at a rate of 39HZ until it swells completely;

[0054] c. Grind the mixture generated in step b with a colloid mill, and the gap between the colloid mill is required to be no more than 0.1mm

[0055] d. Add sericite powder and talc powder to the ground mixture in step c, keep stirring for 2.5 hours at a stirring rate of 34HZ, until the mixture is evenly mixed, and at the same time cool down to 145°C;

[0056] e. Add aluminum hydroxide powder and sasobit asphalt modifier to the mixture generated in step d, keep the temperature at 142°C for 1 hour, and stir at a speed of 30HZ until th...

Embodiment 1-3

[0059] Using the first group of raw materials, follow the steps below to make products 1-3.

[0060] a. Pour asphalt and polybutadiene liquid rubber into the batching tank, heat up to 110°C for dehydration for 30 minutes and stir evenly at a stirring rate of 50HZ;

[0061] b. Add styrene-isoprene-styrene block copolymer to the bitumen generated in step a, keep the temperature at 180°C for 3 hours, and stir at a rate of 50HZ until it swells completely;

[0062] c. Grind the mixture generated in step b with a colloid mill, and the gap between the colloid mill is required to be no more than 0.1mm

[0063] d. Add sericite powder and talc powder to the ground mixture in step c, and keep stirring for 1.5 hours at a stirring rate of 44HZ until the mixture is evenly mixed, and at the same time, cool down to 140°C;

[0064] e. Add aluminum hydroxide powder and sasobit asphalt modifier to the mixture generated in step d, keep the temperature at 150°C for 4 hours, and stir at a rate of ...

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PUM

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Abstract

The invention relates to the technical field of waterproof materials, particularly to a manufacturing method of a novel low-smoke environment-friendly uncured rubber asphalt waterproof paint. The method comprises feeding asphalt and molten polybutadiene into a preparation reactor, heating the reactor to 110 DEG C for dehydration for 30 min, heating the reactor to 160-180 DEG C, adding polyethylene-isoprene-styrene segmented copolymer, keeping stirring and grinding the mixture once, then adding and fully stirring talcum powder and sericite powder, cooling down to 120-150 DEG C, then adding sasobit, aluminum hydroxide and polyoxyethylene, maintaining the temperature, fully stirring the mixture and performing discharging and packaging processes to obtain the novel low-smoke environment-friendly uncured rubber asphalt waterproof paint. The novel low-smoke environment-friendly uncured rubber asphalt waterproof paint has low-temperature and low-smoke constructability and processability and is high in creep resistance, self-healing properties and viscosity. Compared with traditional uncured rubber asphalt waterproof paints, the novel low-smoke environment-friendly uncured rubber asphalt waterproof paint has low-temperature and low-smoke construction and production characteristics, and is environmentally friendly and energy-saving.

Description

technical field [0001] The invention relates to the technical field of waterproof materials, in particular to a method for making a novel low-smoke and environment-friendly non-curing rubber asphalt waterproof coating. Background technique [0002] Non-curing rubber asphalt waterproof coating is a new type of waterproof material developed in the past ten years, and it is also one of the fastest-growing products in recent years. Its excellent characteristics have attracted more and more attention, development and application of the waterproof industry. The 2014 annual development report of China's building waterproof industry specifically mentioned non-curing rubber asphalt waterproof coatings. It is pointed out that in recent years, with the promotion of composite waterproof materials and mechanized construction, many construction projects use waterproof coatings, and the growth rate of polyurethane waterproof coatings, polymer cement coatings, and non-curing rubber asphalt ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D5/18C09D7/61
Inventor 段辉
Owner 北新防水(河南)有限公司