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Method for preparing three-dimensional paper chip based on multi-edition patterning and silk screen combined printing technology

A printing technology, screen printing technology, applied in the direction of chemical instruments and methods, laboratory containers, laboratory utensils, etc., can solve the problems of complex production process, high cost, low precision, etc., and achieve simple equipment and improved The effect of precision and simplification of production steps

Inactive Publication Date: 2016-11-16
DALIAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For this reason, the present invention aims at the deficiencies of the above-mentioned problems, and provides a method for preparing three-dimensional paper chips based on multi-version patterned screen printing technology to solve the existing problems of low precision, high cost, complicated and difficult manufacturing process, etc. question

Method used

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  • Method for preparing three-dimensional paper chip based on multi-edition patterning and silk screen combined printing technology
  • Method for preparing three-dimensional paper chip based on multi-edition patterning and silk screen combined printing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Select a 300-mesh patterned ink screen, which is made of nylon and has a screen tension of 18N / cm. Use the patterned ink screen to print a hydrophobic ink with a volume ratio of 3:1 and ethyl acetate. Liquid, printed on the filter paper, the screen distance between the printing ink screen and the filter paper during printing is 1.5mm, the angle when the scraper contacts the printing ink screen is 45°, the printing speed is 0.2m / s, the paper Under a pressure of 12N, the channel layer and detection layer of the paper chip (2D paper chip) were obtained.

[0040] The pretreatment agent adopts a chemical masking agent, which is specifically 20% sodium malonate and 15% sodium fluoride in an aqueous solution. A mixed solution of EDTA and HF (EDTA: 0.05mol l -1 ; HF: 0.05mol l -1 ) configured as 1.0mg ml -1 The pH of the solution was adjusted to 8.5 with 2% (v / v) ammonia water to obtain the detection agent.

[0041] Select a 400-mesh patterned drug printing screen, which is...

Embodiment 2

[0045] Select a 400-mesh patterned ink screen, which is made of nylon and has a screen tension of 18N / cm. Using the patterned ink screen, the hydrophobic printing solution composed of acrylic pigment and ethanol with a volume ratio of 1:1 is used to print On the filter paper, the screen distance between the printing ink screen and the filter paper during printing is 1.5mm, the angle when the scraper contacts the printing ink screen is 45°, the printing speed is 0.2m / s, and the pressure of the paper is 12N, the channel layer and the detection layer of the paper chip (2D paper chip) were obtained.

[0046] The pretreatment agent uses a chemical masking agent, specifically Na 2 S 2 o 3 (40ppm) and 0.05% (v / v) H 2 SO 4 mixed solution. Use 50% (v / v) acetone aqueous solution to prepare 2 mg ml of chromogen dimethylglyoxime -1 solution (the solution also contains EDTA: 0.05mol l -1 , Na 2 S 2 o 3 : 0.05mol l -1 ) to obtain the detection agent.

[0047] Select a 400-mesh p...

Embodiment 3

[0051] Select a 200-mesh patterned ink screen, which is made of nylon and has a screen tension of 15N / cm. Using the patterned ink screen, a hydrophobic printing solution composed of paraffin wax and n-heptane with a mass ratio of 1:150 is used to print On the cellulose acetate film, the screen distance between the printing ink screen and the cellulose acetate film during printing is 1.8mm, the angle is 40° when the scraper contacts the printing ink screen, and the printing speed is 0.6m / s, the cellulose acetate membrane was subjected to a pressure of 4N to obtain the channel layer and detection layer of the paper chip (2D paper chip).

[0052] The pretreatment agent is ammonia water with a volume fraction of 2%, and the detection agent is dimethylglyoxime with a concentration of 2 mg / ml.

[0053] Select a 300-mesh patterned drug printing screen, which is made of nylon, and the screen tension is 15N / cm; use the patterned drug printing screen to print the above pretreatment age...

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Abstract

The invention provides a method for preparing a three-dimensional paper chip based on a multi-edition patterning and silk screen combined printing technology. The method comprises the following specific preparation procedures: printing a hydrophobic printing solution on paper through a patterned ink-printing silk screen by a scraper so as to allow the hydrophobic printing solution to permeate through the paper and form a hydrophobic area, and taking an unprinted part as a hydrophilic area, so as to obtain a channel layer and a detection layer of the paper chip; printing a pretreating reagent on pretreatment areas of the channel layer and the detection layer through a patterned reagent-printing silk screen by a scraper; printing a detection reagent on a detection area of the detection layer through the patterned reagent-printing silk screen by a scraper; printing a glue solution on the channel layer through a patterned glue-printing silk screen by a scraper; and binding and assembling the channel layer and the detection layer, thereby obtaining the three-dimensional paper chip. According to the method provided by the invention, the process is simple, patterning is easy to realize, the accuracy of pattern making is high, instruments and equipment are simple, industrialization is easy to achieve, and the production cost is reduced remarkably.

Description

technical field [0001] The invention relates to the field of preparation of three-dimensional paper chips, in particular to a method for preparing three-dimensional paper chips based on multi-version patterned screen joint printing technology. Background technique [0002] Microfluidic paper chip, also known as micro-lab on paper, is a new type of microfluidic analysis device that realizes analysis and detection by constructing a fluid channel network on a paper substrate. It combines the miniaturization and portability of traditional microfluidic chips with the advantages of cheap and easy-to-obtain filter paper, convenient processing, and good biocompatibility. It has become a brand-new analysis technology platform. And environmental quality monitoring and other fields have shown good application prospects. [0003] (1) 2D paper chip processing technology [0004] At present, the 2D paper chip processing technologies reported in the literature include UV lithography, wax...

Claims

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Application Information

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IPC IPC(8): B01L3/00
CPCB01L3/5027B01L3/502707B01L2200/10B01L2200/12B01L2300/0874B01L2300/126B01L2300/161
Inventor 王云华郑国侠李雅杰
Owner DALIAN UNIVERSITY
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