Ready-to-use high-dispersion high-viscosity modifier and preparation method thereof

A modifier, high dispersion technology, applied in building components, building insulation materials, construction and other directions, can solve the problems affecting the promotion and use of high viscosity modifiers, high price of high viscosity modifiers, poor high temperature stability, etc. , to achieve the effect of significant social and economic benefits, superior performance and excellent high temperature stability

Inactive Publication Date: 2017-02-15
福建省建筑科学研究院有限责任公司
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Problems solved by technology

[0007] At present, although several direct-input high-viscosity modifiers that are widely used in China partially solve the problems of poor dispersion and high-temperature stability, their unit prices are relatively high (such as the unit price of TPS direct-input materials in Dayou Construction in Japan is about 46,000 / t, the unit price

Method used

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  • Ready-to-use high-dispersion high-viscosity modifier and preparation method thereof
  • Ready-to-use high-dispersion high-viscosity modifier and preparation method thereof

Examples

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Example Embodiment

[0035] Example

[0036] 1. Preparation of high-dispersion and high-viscosity modifier:

[0037] First, heat the polymer modifier and swelling agent at 100°C for 30 minutes to 60 minutes to swell to a fluid state, then pour it into the dispersant that has been heated to a fluid state, and add plasticizer and crosslinking agent, and then Cut through a high-speed shear for 5 to 15 minutes, the speed of the high-speed shear is 1000 to 3000r / min, and the temperature is 140 to 180°C; after completion, pour it into an evaporating dish and put it in a vacuum oven at 120°C for 1 hour. Then it is extruded and pelletized in a single-screw extruder.

[0038] Three groups of different raw material components and the melt indices of the highly dispersed high viscosity modifiers prepared therefrom are shown in Table 1 below:

[0039] Table 1 prepares high-dispersion high-viscosity modifiers in different proportions

[0040]

[0041] 2. Application examples: Prepare corresponding modifi...

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Abstract

The invention provides a ready-to-use high-dispersion high-viscosity modifier and a preparation method thereof. The modifier comprises, by weight, 20-60 parts of polymer modifier, 5-10 parts of swelling agent, 20-45 parts of dispersing agent, 4-10 parts of plasticizer and 0.2-0.5 part of crosslinking agent. The method includes the following steps that first, the polymer modifier and the swelling agent are heated for 30-60 minutes at the temperature of 100 DEG C to be swelled to be in a flowing state, then the mixture is poured into the dispersing agent which is already heated to be in a flowing state, the plasticizer and the crosslinking agent are added, and then the mixture is sheared for 5-15 minutes through a high-speed shearing machine, wherein the rotating speed of the high-speed shearing machine is 1000-3000 r/min, and the temperature ranges from 140 DEG C to 180 DEG C; after completion, the mixture is poured into an evaporating vessel, then the evaporating vessel is put into a vacuum drying box of 120 DEG C to be kept warm for 1 h, and then the mixture is pulled into strips, extruded out and granulated through a single-screw extruder. The production cost is low, dispersion and evenness are excellent, the high-temperature stability of high-viscosity modified asphalt can be further improved, and social and economic benefits are remarkable.

Description

[0001] 【Technical field】 [0002] The invention relates to a direct-throwing high-dispersion high-viscosity modifier and a preparation method thereof. [0003] 【Background technique】 [0004] High-viscosity modified asphalt refers to a viscosity greater than 50,000 Pa·s at 60°C, which is suitable for drainage pavement and heavy traffic pavement. High-viscosity modified asphalt is currently mainly prepared by adding high-molecular polymer modifiers to petroleum asphalt. After petroleum asphalt is modified by polymer, it can significantly improve the high-temperature and low-temperature performance of petroleum asphalt, and improve the high-temperature anti-rutting and low-temperature anti-cracking performance of asphalt mixture. However, due to the differences in molecular weight, viscosity, and density between most polymers and asphalt, the solubility and dispersion properties of polymers and petroleum asphalt are poor, so large asphalt shears and colloid mill equipment must b...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L101/00C08L53/02C08L91/00C08K5/12
CPCC08L95/00C08L101/00C08L2201/08C08L2205/03C08L2205/035C08L53/02C08L53/025C08L91/00C08K5/12
Inventor 林云腾姜真林小青黄芳李家伟潘万南
Owner 福建省建筑科学研究院有限责任公司
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