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Method for preparing high-impact high-gloss ABS resin by using high-viscosity rubber

An ABS resin, high impact technology, applied in the field of polymer material preparation to reduce production costs and ensure mechanical properties

Active Publication Date: 2020-08-07
NORTH HUAJIN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method of using high-viscosity rubber to prepare high-impact high-gloss ABS resin to solve the technical problem of how to reduce production costs and ensure the impact resistance of ABS resin

Method used

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  • Method for preparing high-impact high-gloss ABS resin by using high-viscosity rubber
  • Method for preparing high-impact high-gloss ABS resin by using high-viscosity rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 20kg 565T rubber (low cis rubber), 110kg styrene and 18kg ethylbenzene mixture into the solution tank, stir and dissolve at room temperature for 12h, then add 18kg acrylonitrile and continue to stir and disperse for 12h.

[0029] The main feed to the reactor was 4.5 kg / h, and in the first reactor, the reaction was carried out to a polymer product solids content of 20%.

[0030] The material at the outlet of the first reactor is divided into two parts, and the flow rate of one material is 3.6kg / h, and it enters the strong stirring tank (ie the middle agitator) between the first reactor and the second reactor. The stirring speed of the strong stirring tank is At 120 rpm, the average particle size of the rubber is 0.6 μm; the flow rate of another material is 0.9 kg / h, directly entering the second reactor, and the average particle size of the rubber in the material is 3 μm.

[0031] The material at the outlet of the second reactor is divided into two parts, and one part...

Embodiment 2

[0035] Add 23kg of 700A rubber (low cis rubber), 109kg of styrene and 28kg of ethylbenzene mixture into the solution tank, stir and dissolve at room temperature for 12h, then add 31kg of acrylonitrile and continue to stir and disperse for 12h.

[0036] The main feed to the reactor was 4.5 kg / h, and in the first reactor, the reaction was carried out to a polymer product solids content of 20%.

[0037] The material at the outlet of the first reactor is divided into two parts, and the flow rate of one material is 3.8kg / h, and it enters the strong stirring tank between the first reactor and the second reactor. The stirring speed of the strong stirring tank is 130 rpm, and the average particle size of the rubber is is 0.4μm, and the viscosity of the glue solution is 32Pa.s; the flow rate of another material is 0.7kg / h, which directly enters the second reactor, and the average particle size of the rubber in the material is 2μm.

[0038] The material at the outlet of the second react...

Embodiment 3

[0042] Add 25kg of 30AF rubber (low cis rubber), 110kg of styrene and 20kg of ethylbenzene mixture into the solution tank, stir and dissolve at room temperature for 12h, then add 31kg of acrylonitrile and continue to stir and disperse for 12h.

[0043] The main feed rate of the reactor is 4.5 kg / h, and in the first reactor, the reaction is carried out until the solid weight percentage of the polymer product is 20%.

[0044] The material at the outlet of the first reactor is divided into two parts, and the flow rate of one material is 4.0kg / h, and it enters the strong stirring tank between the first reactor and the second reactor. The stirring speed of the strong stirring tank is 120 rpm, and the average particle size of the rubber is is 0.6μm, and the viscosity of the glue solution is 42Pa.s; another material flow rate is 0.5kg / h, which directly enters the second reactor, and the average particle size of the rubber in the material is 3μm.

[0045] The material at the outlet of...

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Abstract

The invention provides a method for preparing high-impact high-gloss ABS resin by using high-viscosity rubber. According to the invention, a strong stirring kettle with high shearing strength is addedbetween a first reactor and a second reactor, and most of a high-viscosity material at an outlet of the second reactor flows back to the stirring kettle and is sheared into a low-viscosity material,so a viscosity difference between a glue solution and a reaction solution is reduced, and thus, the high-gloss ABS resin is prepared; and besides, most of the high-viscosity glue solution at the outlet of the first reactor enters the strong stirring kettle for phase transformation, and a small part of the high-viscosity glue solution directly enters the second reactor, so the bimodal ABS resin canbe prepared, and the mechanical property of the high-gloss ABS resin is guaranteed. The high-gloss ABS resin is prepared from the low-price high-viscosity rubber, so production cost can be effectively reduced, and meanwhile, the mechanical property of the ABS resin can be ensured by adjusting a process.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and particularly relates to a method for preparing high-impact and high-gloss ABS resin by using high-viscosity rubber. Background technique [0002] In ABS resin, the rubber particles are dispersed in the SAN matrix, and the dispersibility, particle size and particle size distribution of the rubber particles affect the impact strength and surface gloss of the resin. At present, the continuous bulk method mostly chooses low-viscosity rubber to produce high-gloss ABS resin, but the price of low-viscosity rubber is much higher than that of high-viscosity rubber. At present, the blending method is often used to prepare high-gloss ABS resin. Among them, patent CN 104479278A heats low-melting point metal powder, zinc oxide and silicon oxide to a molten state, and blends with ABS resin powder in a twin-screw extruder to prepare high-gloss ABS. Composite material; Patent CN10210816...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/04C08F220/44C08F212/10C08F2/00
CPCC08F279/04C08F220/44C08F212/10C08F2/00
Inventor 王益波魏丽娟范铁军李耀波张东梅刘万胜付莹
Owner NORTH HUAJIN CHEM IND CO LTD
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