SU600154A1 - Method of antistatic treatment of thermal resin - Google Patents

Description

one

This invention relates to a method for the antistatic treatment of thermoplastic polymers by applying antistatic agents to their surface in the form of solutions.

There is a method of antistatic treatment of thermoplastic polymers using solutions of sulfonated homo - or copolymers of dialin 1.

However, in this method, the specific surface resistance (pg) of the samples is 1.7-10-1, at 20 ± 3 ° C and a relative humidity of 65 + 5%. Moreover, when using 0.5–1% solutions of these additives, the ps of the treated polymers is 3.1–108–1.0–10 Ω.

In order to improve the antistatic properties, a method of antistatic processing of thermoplastics is proposed, in which polyacetinaphylene sulfonic acid (PAS) or polyacene naphthylenevinyl benzene sulfonic acid (PAVSK) is used as antistatic.

Processed samples of thermoplastic polymers according to the proposed method have PS 4.0-105-1.9-108 Ohms at 20 ± 3 ° С and relative humidity of 65 + 5%, including when the electrolyte concentration is 0.5-1.0 wt. % ps 6, 9-108 ohms.

PASK or PAVSK are applied to the surface of polymers from alcohol solutions or

from a mixture of ethanol with water a concentration of 0.5-5.0 weight. %

PASK or PAVSK exhibit a higher antistatic effect when processing thermoplastic polymers (for example, low density and high density polyethylene) as compared to the most effective industrial antistatics of the type of alkamon (PS 2, 1–10 Ω at surface application) 2.

Example 1. Disks with a diameter of 50 mm and a thickness of 1 mm from low-density polyethylene are immersed for 20 seconds in a 0.5% solution of PAVSK in ethanol and then dried for 1 day at room temperature in a vertical position. PS treated samples 3.7-10 Ohms at 20 ± 3 ° С and relative humidity 65 + 5%.

Example 2. Disks with a diameter of 50 mm and thickness, another 1 mm of polypropylene is immersed for 20 s in a 0.5% solution of PAVSK in ethanol, then dried for 1 day at room temperature in an upright position, ps processed samples 6.3-10 Ohm at 20 + 3 ° С and relative humidity of 65 + 5% Example 3. Discs with a diameter of 58 mm and a thickness of 2 mm made of polystyrene are immersed for 20 s in a 0.5% solution of PAVSK in ethanol, then dried for 1 day at room temperature in a vertical position, re-treated samples 1.0–10 ohms at 20 ± оС s relative humidity of the network Ь5 ± Ь7о.

ii p and iM e p -i. Dieces with a diameter of 58 mm and a thickness of 2 mm from 1-methyl 1-methyl methacrylate are immersed for 2 and ii with a 0.5% solution of liAbLK in ethanol, then dried for 1 day at room temperature in an upright position. PS of treated samples 7.1-1b UM or 2 and ± 3 С and relative humidity 65 ± 5%.

ii p Disks with a diameter of about mm and a thickness of 2 mm ns nol1; 1 methyl methacrylate are loaded for 2U with 0.5% iiACi solution in ethanol, then dried for 1 day at room temperature in a vertical position, pg of treated samples 1.9-10 Ohm at 20p :: b C and relative humidity Lo + 5%.

ii p and me b. Discs with a diameter of 50 mm and a thickness of i mm nz of low-density polyethylene are loaded for 20 s into i% iiAbCi solution in ethanol, then dried i day at room temperature in a vertical position. PS treated samples 6,6-iO Ohm nri 2o ±: оС n relative intensity of 65dz5%.

ii p and m /. Disks with a diameter of oB mm and a thickness of 2 mm made of polystyrene are immersed in 2U s in 1% -} 1x iiAi3Cl solution in ethanol, then dried i day at room temperature in a vertical position, p treated samples 2.7-iO Ohm at 2U ±; 3 L and relative humidity 65 ± 5%.

iipime b. Discs with a diameter of oO mm and a thickness of i mm from low-density polyethylene are immersed for 20 s in 2% ilABGK solution in ethanol, then dried i day at room temperature in a vertical setting. PS treated samples 2, i-10 Ohm at 2U ±; 3C n relative humidity 65 + 5%.

iipHMep 9. Discs with a diameter of 50 mm and a thickness of i mm made of polypropylene are immersed for 20 s in a 2% ilABCK solution. in ethanol, then dried for 1 day at room temperature in a vertical position, ps treated samples 5,6-iO Ohm NR 20 ± 3 ° C and relative humidity 65 + 5%.

IO example Disks with a diameter of 50 mm and a thickness of i mm nz low-density polyethylene are immersed for 20 s in a 2% ilACK solution in ethanol, then dried for 1 day at room temperature in an upright nolozhenni. PS treated samples 5.2-10 ohm nrn 20 ± 3 ° С and relative humidity 65 ± 5%.

Example 11. Disks with a diameter of 58 mm and a thickness of 2 mm from nolimethylmethacrylate are immersed in 20 with B 2% solution of PAVSK. in a mixture of ethanol and water (1: 1 by volume), then dried for 1 day at room temperature in a vertical position, the samples processed 8.4–10 Ω at a relative humidity of 65 ± 5%.

Example 12. Disks with a diameter of 50 mm and a thickness of 1 mm of low density polyethylene are immersed for 20 s in a 3% solution of PAVSK in a mixture of ethanol and water (1: 1 in

volume), then dried for 1 day at room temperature in the vertical nozhozhenin. PS of treated samples 1.7-10 ohm nrn and relative power 65 ± 5%.

Example 13. Disks with a diameter of 50 mm and a thickness of 1 mm from nolipropylene are loaded for 10 s in a 3% solution of PAVSK in ethanol, then dried for 1 day at room temperature in a vertical position. ps of treated samples 1,1-W Ohm at 20 ± 3 ° С and relative 65 ±; 5%.

Example 14. Disks with a diameter of 58 mm and a thickness of 2 mm made of polystyrene are immersed for 20 s in a 3% PAS solution in ethanol, then they exist for 1 day at room temperature in an upright position, pg of treated samples 1.8-W Ohm NR 20 ± : 3 ° С and relative humidity 65 ± 5%. Example 15. Disks with a diameter of 50 mm and

1 mm thick of low density polyethylene is loaded for 10 s in a 5% solution of PAVSK in ethanol, then dried for 1 day at room temperature in a vertical position. PS processed samples of 4.0 ohm

at 20 ± 3 ° С and relative humidity 66 + 5%.

Example 16. Dial 50 mm disks and 1 mm thick polypropylene discs are loaded for 20 s in a 5% PAVSK solution in a mixture

This liquid with water (1: 1 by volume), then dried for 1 day at room temperature in a vertical field enni. The ratio of processed samples is 9.0–10 Ω at 20rh3C p and a relative humidity of 65 ± 5%.

Example 17. Disks with a diameter of 58 mm and a thickness of 2 mm made of nolystyrene are loaded for 20 s in a 5% solution of PAS in ethanol, then dried for 1 day at room temperature in a vertical position, ps of processed samples 4.3-10-10 Ohm 20 ± 3 ° С and relative humidity 65 + 5%.

Example 18. Disks with a diameter of 58 mm and a thickness of 2 mm made of polymethyl methacrylate are dipped, ayut for 20 s in a 5% solution of PAS

in a mixture of ethanol and water (1: 1 but volume), then stand for 1 day at room temperature in an upright position, ps processed samples 7.6-10 Ohms at 20dz3 ° C and relative humidity 65dz5%.

The use of thermoplastic polymers, processed by the proposed method, will increase the stability and reliability of automata in the assembly of microelectronic circuits, improve the quality and reliability of measurements

electrical measuring instruments, will reduce the "pneuma and breakage of threads from synthetic materials,: 1 windows on plastic parts.

Claims (2)

Invention Formula The method of aptostatic processing of thermoplastics by means of plasticizing an antistatic solution onto their surface, characterized in that, in order to improve antistatic properties, 5 polyacetylene sulfoxylslot or fullnaphthylenevinylbenzene sulphoxneslot are used as antistatic agents. Sources of information taken into account in the examination 6 1. USSR Copyright Certificate No. 443885, cl. C 09K 3/16, 1973. 2. Handbook of plastics, T. 2. M., “Himi, 1969, p. 443.