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A kind of bio-based rubber-plastic alloy modifier and its preparation method and application, asphalt mixture

A technology of asphalt mixture and rubber-plastic alloy, which is applied in building structure, building insulation material, building components, etc., can solve the problems of poor dispersibility and high price of modifier, and achieve easy mixing, excellent high temperature rutting resistance, and cost-effectiveness. high effect

Active Publication Date: 2022-04-29
青岛科凯达橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this method has a good effect on asphalt modification, it is expensive and the modifier has poor dispersibility

Method used

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  • A kind of bio-based rubber-plastic alloy modifier and its preparation method and application, asphalt mixture
  • A kind of bio-based rubber-plastic alloy modifier and its preparation method and application, asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] ① Mix 0.6 parts of silane coupling agent, 45 parts of waste rubber materials, 0.5 parts of antioxidant, and 1 part of lubricant in a high-speed mixer for 20 minutes at a speed of 400 rpm to obtain material 1;

[0039] ② Mix 50 parts of PLA resin, 5 parts of compatibilizer, 0.5 part of sulfide crosslinking agent, and 0.8 part of thiuram accelerator in a high-speed mixer. The speed of the high-speed mixer is 400 rpm, and the time is 5 minutes to obtain the material 2;

[0040] ③Put the material 2 in step 2 from the main feeding port and the material 1 in step 1 from the side feeding port into the parallel twin-screw extruder for granulation. Water-cooled and pelletized, and the obtained pellets were dried at 60°C for 2 hours to obtain a bio-based rubber-plastic alloy asphalt modifier.

Embodiment 2

[0042] ① Mix 0.6 parts of silane coupling agent, 60 parts of waste rubber materials, 0.5 parts of antioxidant, and 1 part of lubricant in a high-speed mixer for 20 minutes at a speed of 400 rpm to obtain material 1;

[0043] ②Mix 35 parts of PLA resin, 5 parts of compatibilizer, 0.5 part of sulfide crosslinking agent, and 0.8 part of thiuram accelerator in a high-speed mixer. The speed of the high-speed mixer is 400rpm, and the time is 5min. 2;

[0044] ③Put the material 2 in step 2 from the main feeding port and the material 1 in step 1 from the side feeding port into the parallel twin-screw extruder for granulation. Water-cooled and pelletized, and the resulting pellets were dried at 60°C for 2 hours to obtain a bio-based rubber-plastic alloy asphalt modifier.

Embodiment 3

[0046] ① Mix 0.6 parts of silane coupling agent, 40 parts of waste rubber materials, 0.5 parts of antioxidant, and 1 part of lubricant in a high-speed mixer for 20 minutes at a speed of 400 rpm to obtain material 1;

[0047] ② Mix 45 parts of PLA resin, 15 parts of compatibilizer, 0.5 part of sulfide crosslinking agent, and 0.8 part of thiuram accelerator in a high-speed mixer. The speed of the high-speed mixer is 400 rpm and the time is 5 minutes to obtain the material 2;

[0048] ③Put the material 2 in step 2 from the main feeding port and the material 1 in step 1 from the side feeding port into the parallel twin-screw extruder for granulation. Water-cooled and pelletized, and the resulting pellets were dried at 60°C for 2 hours to obtain a bio-based rubber-plastic alloy asphalt modifier.

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Abstract

The invention proposes a preparation method and application of a bio-based rubber-plastic alloy modifier and an asphalt mixture, which belong to the technical field of rubber-plastic alloy modifiers. The bio-based rubber-plastic alloy modifier is prepared from the following components in parts by weight Ingredients: 30-70 parts of PLA resin, 30-60 parts of waste rubber / recycled plastic material, 0-25 parts of compatibilizer, 0.3-2 parts of coupling agent, 0.3-3 parts of cross-linking agent, 0.3-3 parts of accelerator 3 parts and 0.1 to 1 part of antioxidant, 1 to 5 parts of lubricant. The modifier of the present invention is prepared from renewable bio-based materials and waste rubber / recycled plastic elastomers through polymerization reaction, which significantly improves the high and low temperature toughness and crack resistance of asphalt, and prevents permanent deformation of asphalt pavement; and It is firmly bonded with asphalt aggregates and improves the elasticity of asphalt; the asphalt mixture provided by the invention meets the requirements of renewable energy, is beneficial to the environment, and can replace the traditional asphalt modifier of the thermoplastic elastomer system. Effective social benefits and economic value.

Description

technical field [0001] The invention relates to the technical field of rubber-plastic alloy modifiers, in particular to a bio-based rubber-plastic alloy modifier, a preparation method and application thereof, and an asphalt mixture. Background technique [0002] As the main structural type of high-grade highway, asphalt pavement has been widely used because of its excellent performance. With the increasingly stringent environmental protection requirements, the use of renewable resources has become increasingly prominent. [0003] The current mainstream asphalt modification solution is to use thermoplastic elastomers such as SBS (styrene-butadiene-styrene) copolymer and ethylene-propylene rubber as the main components, and improve asphalt mixing through blending modification or alloying technology. Viscoelasticity and low temperature toughness of the material. However, although this method has a good effect on asphalt modification, it is expensive and the dispersibility of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L19/00C08L23/06C08L91/06C08L51/06C08L51/08C08K13/02C08K5/053C08L95/00
Inventor 张哲郑君陈秀秀耿立涛穆明浩任瑞波
Owner 青岛科凯达橡塑有限公司
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