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Plastic piston processing material for discharging of separating funnel for chemical laboratory test

A technology for separating funnel and processing materials, which is applied in the field of chemical glass instruments, can solve the problems of corroding gloves and reducing the safety of use, and achieves the effects of enhancing the processing formability, improving the safety of use, and ensuring the effect of liquid separation

Inactive Publication Date: 2017-04-26
DONGZHI TIANFU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still liquid leakage during use. If the separated liquid is corrosive, the leaked liquid will corrode the gloves, thereby reducing the safety of use.

Method used

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  • Plastic piston processing material for discharging of separating funnel for chemical laboratory test
  • Plastic piston processing material for discharging of separating funnel for chemical laboratory test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 10 parts of chlorinated polyvinyl chloride and 3 parts of C9 petroleum resin to 20 parts of acrylonitrile-butadiene-styrene copolymer, and heat up to 125-130°C at a heating rate of 5°C / min and mix with heat 30min, then add 3 parts of organic fillers and 0.5 part of nano-titanium dioxide, and continue to heat and mix for 20min to obtain material I;

[0024] (2) Add 5 parts of polyvinyl chloride paste resin and 3 parts of fluorocarbon resin to 10 parts of ethylene-vinyl acetate copolymer, and heat up to 120-125 ° C at a heating rate of 5 ° C / min and mix for 20 minutes, then add 2 1 part of hydrogenated rosin glyceride and 2 parts of powdered acrylonitrile-butadiene rubber, continue to insulate and mix for 15min to obtain material II;

[0025] (3) Add material II, 2 parts of crospovidone, 1 part of asbestos wool and 1 part of molecular sieve raw powder to material I, mix well, and send the resulting mixture into a mixer, and mix it at 120-125 °C After refining f...

Embodiment 2

[0029] (1) Add 10 parts of chlorinated polyvinyl chloride and 3 parts of C9 petroleum resin to 20 parts of acrylonitrile-butadiene-styrene copolymer, and heat up to 125-130°C at a heating rate of 5°C / min and mix with heat 30min, then add 5 parts of organic fillers and 0.5 part of nano-titanium dioxide, and continue to heat and mix for 20min to obtain material I;

[0030] (2) Add 5 parts of polyvinyl chloride paste resin and 3 parts of fluorocarbon resin to 10 parts of ethylene-vinyl acetate copolymer, and heat up to 120-125 ° C at a heating rate of 5 ° C / min and mix for 20 minutes, then add 3 parts 1 part of hydrogenated rosin glyceride and 2 parts of powdered acrylonitrile-butadiene rubber, continue to insulate and mix for 15min to obtain material II;

[0031] (3) Add material II, 2 parts of crospovidone, 1 part of asbestos wool and 1 part of molecular sieve raw powder to material I, mix well, and send the resulting mixture into a mixer, and mix it at 120-125 °C After refi...

Embodiment 3

[0035] Utilize the material prepared in Example 1 and Example 2 to process and manufacture the plastic piston for discharging liquid in the separating funnel of small chemical industry test, and test its performance, the results are shown in Table 1.

[0036] The service performance of the plastic piston made by table 1 processing

[0037]

[0038]

[0039] Corrosion resistance test conditions: soak in 3wt% sodium chloride solution, 10wt% sulfuric acid solution, 10wt% sodium hydroxide solution for 24 hours each.

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Abstract

The invention discloses a plastic piston processing material for discharging of a separating funnel for a chemical laboratory test and relates to the technical field of chemical glassware. The plastic piston processing material is prepared from raw materials in parts by weight as follows: 15-20 parts of ABS (acrylonitrile butadiene styrene), 10-15 parts of EVA (ethylene vinyl acetate), 10-15 parts of chlorinated polyvinyl chloride, 5-10 parts of polyvinyl chloride paste resin, 3-6 parts of C9 petroleum resin, 3-6 parts of organic filler, 3-6 parts of fluorocarbon resin, 2-4 parts of glycerol ester of hydrogenated rosin, 2-4 parts of powdered nitrile rubber, 2-4 parts of crospovidone, 1-2 parts of asbestos wool, 1-2 parts of molecular sieve raw powder and 0.5-1 part of nanometer titanium dioxide. The plastic piston processing material has excellent corrosion resistance and airtightness, requires no application of Vaseline, is convenient to use, can effectively avoid liquid leakage, improves the use safety and guarantees the liquid separating effect.

Description

[0001] Technical field: [0002] The invention relates to the technical field of chemical glass instruments, in particular to a processing material for a plastic piston used for discharging liquid from a liquid separation funnel of a small chemical test. [0003] Background technique: [0004] A separatory funnel is a commonly used glass instrument in small chemical experiments, used to separate the oil phase and water phase of a solution. The neck of the separatory funnel is equipped with a piston for flexible control of the separated liquid. The traditional separatory funnel is made of glass as a whole. In order to improve the sealing performance of the piston, prevent liquid leakage and ensure the separation effect, it is necessary to apply Vaseline on the plug core of the piston. However, there is still liquid leakage during use. If the separated liquid is corrosive, the leaked liquid will corrode the gloves, thereby reducing the safety of use. In response to this situati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L27/24C08L57/02C08L23/08C08L27/06C08L27/12C08L93/04C08L9/02C08L39/06C08K13/06C08K9/04C08K7/26C08K7/12C08K3/22
Inventor 尤新谊
Owner DONGZHI TIANFU CHEM
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