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Antistatic agent and method for preparing same

A technology of antistatic agent and formula, which is applied in the field of antistatic agent and its preparation, can solve the problems of no air humidity dependence, antistatic ability influence, high melting point, etc., and achieve the effect of excellent antistatic ability

Inactive Publication Date: 2010-06-23
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For polyethers, because they are non-ionic, the antistatic mainly relies on moisture absorption to form a surface conductive layer to dredge static electricity, so it has a strong dependence on air humidity; for quaternary ammonium salts, it conducts static electricity through an ion conduction mechanism. Undoubtedly, there is no large air humidity dependence, but considering the compatibility with ABS, there are certain application limitations; the styrene sulfonate type is similar to the quaternary ammonium salt, and the main channel is ion conduction. The mechanism of electrostatic charge, and the structure is similar to ABS and can obtain better compatibility, it can be said to be a polymer antistatic agent specially for ABS
However, the extremely high melting point of the polymer of styrene sulfonate makes it unable to melt within the ABS molding processing temperature range. Therefore, it cannot form an effective network structure in ABS, and the antistatic ability will also be very strong. big impact

Method used

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  • Antistatic agent and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The sodium p-styrene sulfonate of 20g is dissolved in deionized water, and its mass concentration is 30%, and in the four-necked flask of packing band stirrer and reflux device, feeds N simultaneously 2 , set the temperature at 60°C, dissolve 60ml of n-butyl methacrylate to remove the inhibitor in tetrahydrofuran and pour it into the reaction system, start stirring, and after about 30min, add the initiator potassium persulfate-sodium bisulfite Solution (dissolve 0.5g potassium persulfate and 0.2g sodium sulfite in 50ml deionized water), put it into a constant pressure dropping funnel, drop p-styrene at a rate of 1 drop every 3 seconds or 2 drops every 5 seconds In the mixed solution of sulfonate and n-butyl methacrylate, the solution changes from light yellow or colorless to slightly white, and finally becomes milky white. The reaction is about 10 hours in total, and the reaction is stopped. Precipitate the product with ethanol and filter it with water at the same time....

Embodiment 2

[0027] Dissolve 10 g of sodium p-styrene sulfonate in deionized water with a mass concentration of 35%, and put it into a four-necked flask with a stirring device, set the temperature at 70 ° C, and dissolve 25 ml of polyethylene glycol methacrylate Alcohol monomethyl ether ester is dissolved in p-styrene sulfonate solution, and N is passed through at the same time 2 , plus initiator azodiisopropylimidazoline, the addition amount is 0.3g. Stop the reaction after reacting for about 10 hours, precipitate the product with methanol, and filter it with water at the same time. After repeated 3 times, take out the product and dry it in vacuum at 50°C for 12 hours to obtain the desired antistatic agent. The biggest feature of this reaction is that the reaction process has obvious The color changes from light yellow to dark red to brown and then to light yellow, and finally the color will become milky white.

Embodiment 3

[0029] Dissolve 25g of sodium p-styrene sulfonate in deionized water to make a concentration of 25%, and put it into a four-necked flask with a stirring device, add 70ml of ethyl methacrylate to the inhibitor after removing the polymerization inhibitor system, and then pass into N 2 , set the temperature to 70°C, and simultaneously dissolve 0.8g of 4,4'-azobis(4-cyanovaleric acid) initiator in 70ml of deionized water to form a solution, and put it into a constant pressure dropping solution funnel. Pass N 2 After half an hour, start to add the initiator dropwise, and control the dropping speed to one drop every 3 seconds or 2 drops every 5 seconds. Stop the reaction after about 8 hours, purify the product with methanol, and finally filter it with water. After repeated several times, take out the product and dry it in vacuum at 50°C for 12 hours to obtain the antistatic agent.

[0030] Grind the antistatic agent obtained from the above examples into a powder of 80 to 100 mesh,...

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Abstract

The invention relates to antistatic agent used for acrylonitrile-butadiene-styrene (ABS) resin and a method for preparing the same. Methacrylate is added to p-styrenesulfonic acid salt according to an appropriate proportion, and the methacrylate reacts with the p-styrenesulfonic acid salt under the action of initiator to generate the antistatic agent. Because the methacrylate and the p-styrenesulfonic acid salt copolymerize to generate diblock copolymer, and the diblock copolymer adjusts the high melting point of p-styrenesulfonic acid salt homopolymer, the antistatic agent can be processed in the ABS forming and processing temperature range, the antistatic performance of the ABS can be improved, and the main mechanical performance of the ABS can not be affected.

Description

Technical field: [0001] The invention relates to an antistatic agent and a preparation method thereof, in particular to an antistatic agent used for ABS resin and a preparation method thereof. Background technique [0002] ABS resin is a kind of engineering plastic, which is a terpolymer of acrylonitrile, butadiene and styrene. It has excellent comprehensive properties, excellent impact strength, good dimensional stability, electrical properties, wear resistance, good molding processing and mechanical processing, and is currently the polymer with the largest output and the most widely used. However, due to its good electrical insulation, it is easy to generate static electricity, especially when the electrostatic charge accumulates to a certain extent, static spark discharge may occur, causing explosions and fires in chemical product warehouses, and causing major personal accidents, so it is limited to a certain extent. In-depth application, therefore, how to solve its surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/28C08F212/14C08L33/10C08L33/14C08L55/02
Inventor 汪济奎赵光郭卫红付义术蔡国锋朱旭东
Owner EAST CHINA UNIV OF SCI & TECH
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