Direct-vat-set high-viscosity modifier with high viscosity and toughness, and preparation method thereof

A direct-injection, high-viscosity technology, applied in the field of asphalt modifiers, can solve the problems of reduced viscosity and toughness of asphalt mixtures, achieve good fatigue resistance and thermal stability, improve antistatic effect, and good comprehensive performance.

Active Publication Date: 2020-08-21
山东高速集团有限公司创新研究院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problem that the viscosity and toughness of the asphalt mixture is reduced due to the addition of solvent oil to the existing modifiers, the present invention proposes a direct-throwing high-viscosity, toughness and high-viscosity modifier, which ensures good flow without adding solvent oil and dispersing performance, also has high viscosity toughness and high viscosity performance

Method used

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  • Direct-vat-set high-viscosity modifier with high viscosity and toughness, and preparation method thereof
  • Direct-vat-set high-viscosity modifier with high viscosity and toughness, and preparation method thereof
  • Direct-vat-set high-viscosity modifier with high viscosity and toughness, and preparation method thereof

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Effect test

Embodiment 1

[0025] This embodiment provides a direct-throwing high-viscosity high-viscosity modifier, which is mainly prepared from the following components in parts by weight: 20 parts of Pebax elastomer, 8.5 parts of polyglycolic acid resin, 70 parts Part of K resin, 0.5 part of erucamide, 0.5 part of antioxidant 1010, 0.5 part of talcum powder.

[0026] This embodiment also provides the preparation method of modifying agent, specifically comprises the following steps:

[0027] Step 1: Mix the above-mentioned Pebax elastomer, polyglycolic acid resin, K resin, erucamide, and antioxidant 1010 in a high-speed mixer for 60 minutes at a speed of 500 rpm, and prepare it at a temperature of 60° C. Mixture.

[0028]Step 2: Melt and knead the mixture in a twin-screw extruder. The extrusion temperature is 180°C, the screw speed is 300rpm, and then extruded. After cooling and drying, talc powder is added to obtain a direct-input high-viscosity, toughness, and high-viscosity product. Modifier.

Embodiment 2

[0030] This embodiment provides a direct-throwing high-viscosity high-viscosity modifier, which is mainly prepared from the following components in parts by weight: 35 parts of Pebax elastomer, 13.5 parts of polyglycolic acid resin, 50 parts Part of K resin, 0.7 part of erucamide, 0.3 part of antioxidant 168, 0.5 part of diatomaceous earth.

[0031] This embodiment also provides the preparation method of modifying agent, specifically comprises the following steps:

[0032] Step 1: Mix the above-mentioned Pebax elastomer, polyglycolic acid resin, K resin, erucamide, and antioxidant 168 in a high-speed mixer for 60 minutes at a speed of 500 rpm at a temperature of 60° C. Mixture.

[0033] Step 2: Melt and knead the mixture in a twin-screw extruder, the extrusion temperature is 180°C, the screw speed is 300rpm, and then extrude, after cooling and drying, add anti-adhesive diatomaceous earth to obtain a direct-input type High viscosity toughness high viscosity modifier.

Embodiment 3

[0035] This embodiment provides a direct-throwing high-viscosity high-viscosity modifier, which is mainly prepared from the following components in parts by weight: 50 parts of Pebax elastomer, 18.2 parts of polyglycolic acid resin, 30 parts 1 part of K resin, 1 part of erucamide, 0.4 part of antioxidant 246, 0.4 part of talcum powder.

[0036] This embodiment also provides the preparation method of modifying agent, specifically comprises the following steps:

[0037] Step 1: Mix the above-mentioned Pebax elastomer, polyglycolic acid resin, K resin, erucamide, and antioxidant 246 in a high-speed mixer for 60 minutes at a speed of 500 rpm at a temperature of 60° C. Mixture.

[0038] Step 2: Melt and knead the mixture in a twin-screw extruder, the extrusion temperature is 180°C, the screw speed is 300rpm, and then extrude, after cooling and drying, add anti-adhesive talc powder to obtain a direct-injection high-end product. Viscosity high viscosity modifier.

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Abstract

The invention provides a direct-vat-set high-viscosity modifier with high viscosity and toughness, and a preparation method thereof. The direct-vat-set high-viscosity modifier is mainly prepared from,by weight, 20 to 50 parts of Pebax elastomer, 5 to 20 parts of polyglycolic acid resin, 40 to 70 parts of K resin, 0.5 to 1 part of erucyl amide, 0.3 to 0.5 part of an antioxidant and 0.3 to 0.5 partof an anti-bonding agent. The direct-vat-set high-viscosity modifier with high viscosity and toughness can improve the high-temperature adhesive property, the ageing resistance and the elastic recovery capability of asphalt; an application method of the modifier is simple, asphalt concrete can be rapidly prepared on site, the production period is shortened, and the prepared asphalt concrete has better fatigue resistance and thermal stability and also keeps good comprehensive performance.

Description

technical field [0001] The invention relates to the field of asphalt modifiers, in particular to a direct-throwing high-viscosity, toughness, and high-viscosity modifier and a preparation method thereof. Background technique [0002] Road polymer modifiers mainly include polyolefins, ethylene-vinyl acetate copolymers and rubber polymers, and the paving methods mainly include hot-mix type and direct-injection type. The hot mixing process is a high-temperature dispersion process that requires a lot of energy, and at the same time causes a certain aging of the asphalt. After the modified asphalt is completed, it may be stored for a certain period of time, and the process will cause certain segregation, especially for high-viscosity modified asphalt, resulting in an uneven situation where the upper part of the asphalt tank has a higher viscosity and the lower part has a lower viscosity. The direct modifier can be directly put into the mixing tank, and it can be melted evenly du...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L87/00C08L67/04C08K5/20C08K3/34C08L95/00C08K13/02C08K5/134C08K13/04C08K7/26C08K5/526C08K5/13C04B26/26
CPCC08L53/02C08L87/005C08L95/00C04B26/26C08L2205/03C08L2205/035C08L67/04C08K13/02C08K5/20C08K3/34C08K5/1345C08K13/04C08K7/26C08K5/526C08K5/13C04B14/00C04B24/32C04B24/2676C04B24/124C04B24/283C04B2103/608C04B2103/0068
Inventor 穆明浩李朝旭张哲王川耿立涛王峥王孜健刘新强栗剑赵景原刘占斌郑君陈秀秀王盼郑捷元杨茂君
Owner 山东高速集团有限公司创新研究院
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