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Rapid UV (Ultraviolet) photo-cured ink and application method thereof

A technology of ink and composite light, which is applied in the direction of ink, applications, household appliances, etc., can solve the problems of UV direct writing technology efficiency bottleneck, etc., and achieve the effect of improving photocuring efficiency, photosensitivity, and fineness

Active Publication Date: 2018-06-22
深圳市容大感光科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a fast UV curing ink, it can completely solve the efficiency bottleneck of UV direct writing technology

Method used

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  • Rapid UV (Ultraviolet) photo-cured ink and application method thereof
  • Rapid UV (Ultraviolet) photo-cured ink and application method thereof
  • Rapid UV (Ultraviolet) photo-cured ink and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the preparation of composite photoinitiator

[0034] Different types of photoinitiators are selected and matched in weight to configure different composite photoinitiators. The photoinitiators and their weight ratios used in different composite photoinitiators are shown in Table 1 below. The weight of each photoinitiator in Table 1 is the number of grams, and each composite photoinitiator is configured with 100 grams for the preparation of photocurable ink.

[0035] Table 1: Composite photoinitiator formula table

[0036]

Embodiment 2

[0037] Embodiment 2: the preparation of DI special printing ink

[0038] Take 35g of unsaturated acrylic resin and 30g of acrylic epoxy resin, then take 9g of composite photoinitiator, 9g of crosslinking agent triallyl isocyanurate, 1.5g of defoamer KS-66, 6g of solvent PMA, 1.5 G adhesion promoter PM-2 and 8g talcum powder, mixed evenly and ground to prepare DI special ink.

[0039] The composite photoinitiators in Table 1 were used to prepare DI special ink according to the above method, and then the UV curing experiment was carried out to study the UV curing time and curing effect respectively.

[0040] Prepare inks YM1, YM2, YM3, YM4, YM5, YM6, YM7 and YM8 with the composite photoinitiators in Table 1 respectively, the composite photoinitiator used in ink YM1 is FG1, and so on, the composite photoinitiator used in ink YM8 The agent is FG8.

Embodiment 3

[0041] Embodiment 3: the measurement of ink photocuring time

[0042]The method of determining the curing time is to apply the ink on the circuit board, and then use a mixed ultraviolet light (LDI exposure machine) to draw the circuit diagram, adjust the moving speed of the ultraviolet light, and determine the time the ultraviolet light stays in the ink layer. Check whether the layer meets the requirements of photocurability, hardness, adhesion, solder heat resistance, solvent resistance, acid resistance, and alkali resistance. If the requirements are met, it is clear that the ink can be used for direct photocuring, and it can be used After direct photocuring, count the time spent in photocuring. The specific results are shown in Table 2 below.

[0043] Table 2 Photocuring performance and photocuring time of photocurable ink

[0044]

[0045]

[0046] Replacement in Example 1, the ketoxime ester photoinitiator is changed to OXE-2, the thioxanthone photoinitiator is cha...

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PUM

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Abstract

The invention relates to rapid UV (Ultraviolet) photo-cured ink and an application method thereof. The DI special ink is prepared from a composite photoinitiator, wherein the composite photoinitiatorconsists of di-2,6-difluoro-3-pyrrole phenyl titanocene dichloride, a ketoxime ester type photoinitiator, a thioxanthone photoinitiator, an acyl phosphine type photoinitiator, an alpha-hydroxyalkyl phenyl ketone photoinitiator and a morpholinyl-containing alpha-aminoketone photoinitiator; the di-2,6-difluoro-3-pyrrole phenyl titanocene dichloride accounts for 5-8% by weight of the total weight ofthe composite photoinitiator; the sum of weights of the other photoinitiators accounts for 90-95% by mass of the total weight of the composite photoinitiator. By adopting the composite photoinitiatorprovided by the invention, the problem that ink cannot be directly cured with ultraviolet light efficiently is solved; because of the low efficiency that ink is cured with ultraviolet light, a very long time for curing common ink is needed, although the problem of precise photo-curing is solved, low-efficiency photo-curing can be still not adopted in the industry.

Description

technical field [0001] The invention belongs to the field of circuit board inks, and in particular relates to UV-curable inks and a preparation method thereof. [0002] In particular, it relates to a fast UV light curing ink and its application method. Background technique [0003] The traditional method of using UV light to make circuit boards is to coat the circuit board with ink, then cover it with a film negative, and then cure it with ultraviolet light, then wash off the uncured part, and the remaining part is the cured part. When this traditional method is used to prepare very high-density (≤30um) circuit boards, its alignment and control are insufficient, the processing process is lengthy, and a large number of film negatives are required, and the production and maintenance of film negatives require a lot of auxiliary materials and materials. Chemicals, temperature and humidity control facilities and other factors make it unable to meet the processing and manufacturi...

Claims

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Application Information

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IPC IPC(8): C09D11/101C09D11/102C09D11/107
CPCC09D11/101C09D11/102C09D11/107
Inventor 王俊峰刘启升
Owner 深圳市容大感光科技股份有限公司
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