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Preparation method of LTCC dielectric paste sintered to be transparent after casting

A dielectric slurry and transparent technology, applied in quartz/glass/vitreous enamel, ceramics, insulators, etc., can solve the problems of termination, waste of manpower, material and financial resources, and achieve the effect of low dielectric loss and dimensional stability guarantee

Active Publication Date: 2021-09-24
西安宏星电子浆料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ceramic substrates used in the market are all non-transparent substrates. During the testing process of the substrates, some defects in the sintering process often cause the termination of the test, which wastes a lot of manpower, material and financial resources.

Method used

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  • Preparation method of LTCC dielectric paste sintered to be transparent after casting
  • Preparation method of LTCC dielectric paste sintered to be transparent after casting
  • Preparation method of LTCC dielectric paste sintered to be transparent after casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Add 300g of carbon tetrachloride to the beaker, turn on the magnetic stirrer, then slowly add 500 g of YBS-based glass porcelain powder with particle size D50≤1.0μm into the beaker, stir and mix for 2 hours with a magnetic stirrer, pour it out and put it in Dry in an oven at 74°C for 12 hours, and pass through a 325-mesh nylon screen after drying.

[0030] 2. Put the YBS glass-ceramic powder passed through a 325-mesh nylon screen in step 1 into a polyurethane ball mill tank, add 450g of acetone and 5g of tributyl phosphate, seal the ball mill tank and place it on an eight-roller ball mill for ball milling and dispersion. The duration is 2h.

[0031] 3. Add 15g of polyethylene glycol and 10g of polyvinyl butyral resin after the primary ball mill dispersion, and add 250g of acetone, seal the ball mill tank and place it on an eight-roller ball mill for secondary ball mill dispersion for 16 hours.

[0032] 4. Add 25g of diallyl phthalate and 15g of 1,3-propanediol after...

Embodiment 2

[0035] 1. Add 250g of carbon tetrachloride to the beaker, turn on the magnetic stirrer, then slowly add 500 g of YBS series glass porcelain powder with particle size D50≤1.0μm into the beaker, stir and mix for 2 hours with a magnetic stirrer, pour it out and put it in Dry in an oven at 60°C for 12 hours, and pass through a 325-mesh nylon screen after drying.

[0036] 2. Put the YBS glass-ceramic powder passed through a 325-mesh nylon screen in step 1 into a polyurethane ball mill tank, add 400g of acetone and 3g of tributyl phosphate, seal the ball mill tank and place it on an eight-roller ball mill for ball milling and dispersion. The duration is 1h.

[0037] 3. Add 5g of polyethylene glycol and 5g of polyvinyl butyral resin after the first ball mill dispersion, and add 100g of acetone, seal the ball mill tank and place it on an eight-roller ball mill for secondary ball mill dispersion for 8 hours.

[0038] 4. Add 15g of diallyl phthalate and 5g of 1,3-propanediol after the ...

Embodiment 3

[0041] 1. Add 500g carbon tetrachloride to the beaker, turn on the magnetic stirrer, then slowly add 500 g of YBS glass porcelain powder with a particle size D50≤1.0μm into the beaker, stir and mix for 1 hour with a magnetic stirrer, pour it out and put it in Dry in an oven at 70°C for 10 hours, and pass through a 325-mesh nylon screen after drying.

[0042] 2. Put the YBS glass-ceramic powder passed through a 325-mesh nylon screen in step 1 into a polyurethane ball mill tank, add 500g of acetone and 6g of tributyl phosphate, seal the ball mill tank and place it on an eight-roller ball mill for ball milling and dispersion. The duration is 4 hours.

[0043]3. Add 30g of polyethylene glycol and 25g of polyvinyl butyral resin after the first ball mill dispersion, and add 300g of acetone, seal the ball mill tank and place it on an eight-roller ball mill for the second ball mill dispersion for 24 hours.

[0044] 4. Add 50g of diallyl phthalate and 50g of 1,3-propanediol after the ...

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Abstract

The invention discloses a preparation method of LTCC dielectric paste sintered to be transparent after casting. The preparation method comprises the following steps: in the dispersion process of YBS (Yttrium Brominated Styrene) series glass ceramic powder, replacing conventional isopropanol with carbon tetrachloride, and adding diallyl phthalate and 1, 3-propylene glycol after secondary ball milling dispersion is finished to prepare the dielectric paste. The ceramic tape sintered after casting of the LTCC dielectric paste prepared by the method is colorless and transparent, the ceramic substrate can be prepared after the ceramic tape is processed, the defects of the sintered substrate can be visually judged, the defects such as unevenness, breakage and bubbles can be timely terminated, the next step of electrical property, adhesive force and durability test is not needed, the cost waste is avoided, the loss can be effectively stopped, the tensile strength, bending strength and dielectric property of the ceramic tape are not influenced, the lower dielectric loss can be ensured, and the dimensional stability is also ensured.

Description

technical field [0001] The invention belongs to the technical field of medium slurry, and in particular relates to a preparation method of LTCC medium slurry which is transparent after being cast and sintered. Background technique [0002] Low-temperature co-fired ceramic (LTCC) dielectric slurry is a kind of slurry that plays a protective role. Its main component is glass porcelain powder, which can effectively play the role of moisture-proof and insulation. At present, there are related technologies that can make ceramic substrates from dielectric paste through processes such as tape casting, and then carry out printing and matching tests of other pastes on ceramic substrates, but problems emerge in endlessly during the test. The ceramic substrates currently used in the market are all non-transparent substrates. During the testing process of the substrates, some defects in the sintering process often cause the termination of the test, which wastes a lot of manpower, materi...

Claims

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Application Information

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IPC IPC(8): H01B3/12H01B3/00H01B3/08H01B17/56H01B19/00C04B35/505C04B35/626C04B35/632
CPCH01B3/12H01B3/008H01B3/084H01B17/56H01B19/00C04B35/505C04B35/6264C04B35/632C04B35/62635C04B2235/36C04B2235/3409C04B2235/3418C04B2235/9653C04B2235/96
Inventor 周碧刘姚赵科良王要东鹿宁杜彬赵莹张艳萍
Owner 西安宏星电子浆料科技股份有限公司
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