A thermosetting insulating filler and its molding process

A technology of insulating filling and forming process, applied in inorganic insulators, quartz/glass/glass enamel, etc., it can solve the problems of insulating material working temperature not exceeding 180℃, unsuitable heating tube, loose magnesia powder, etc., to achieve curing effect Good, Inexpensive, and Easy-to-Get Results

Active Publication Date: 2020-07-10
安徽苏立科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of magnesium oxide powder is relatively loose, and needs to be used in conjunction with the shrinking process. After shrinking, it needs to be annealed to eliminate work hardening before the next step of processing can be carried out.
This type of filler is not suitable for heating tubes that cannot be shrunk; for this type of heating element, the common process is to add a curing agent such as oxidation resin to cure, but the working temperature of the insulating material after adding it cannot exceed 180 ° C, which limits the use condition

Method used

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  • A thermosetting insulating filler and its molding process
  • A thermosetting insulating filler and its molding process
  • A thermosetting insulating filler and its molding process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A thermosetting insulating filler, comprising the following components in mass percentage:

[0023] Fused silica sand is 65%, aluminum dihydrogen phosphate powder is 4%, and the balance is water.

[0024] The particle size of the fused silica sand is 200-400 mesh.

[0025] A molding process of a thermosetting insulating filler, comprising the following process steps:

[0026] The first step: batching: mix each component uniformly according to the ratio to make a slurry material;

[0027] The second step: filling: fill the required position with the slurry material prepared in the first step;

[0028] Step 3: Drying and forming in sections.

[0029] The segmented method includes the following steps:

[0030] S1. Stand still for 3 hours;

[0031] S2, baking at 70°C for 3 hours;

[0032] S3. Baking at 120° C. for 3 hours and then molding.

Embodiment 2

[0034] A thermosetting insulating filler, comprising the following components in mass percentage:

[0035] Fused silica sand is 72%, aluminum dihydrogen phosphate powder is 2%, and the balance is water.

[0036] The particle size of the fused silica sand is 200-400 mesh.

[0037] A molding process of a thermosetting insulating filler, comprising the following process steps:

[0038] The first step: batching: mix the components uniformly according to the ratio to make a slurry material; the second step: filling: fill the required position with the slurry material prepared in the first step;

[0039] Step 3: Drying and forming in sections.

[0040] The segmented method includes the following steps:

[0041] S1. Stand still for 6 hours;

[0042] S2, bake at 80°C for 6 hours;

[0043] S3. Baking at 130° C. for 2 hours and then molding.

Embodiment 3

[0045] A thermosetting insulating filler, comprising the following components in mass percentage:

[0046] Fused silica sand is 69%, aluminum dihydrogen phosphate powder is 3%, and the balance is water.

[0047] The particle size of the fused silica sand is 200-400 mesh.

[0048] A molding process of a thermosetting insulating filler, comprising the following process steps:

[0049] The first step: batching: mix the components uniformly according to the ratio to make a slurry material; the second step: filling: fill the required position with the slurry material prepared in the first step;

[0050] Step 3: Drying and forming in sections.

[0051] The segmented method includes the following steps:

[0052] S1. Stand still for 5 hours;

[0053] S2, bake at 90°C for 4 hours;

[0054] S3. Baking at 125° C. for 2.5 hours and then molding.

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Abstract

The invention relates to a thermosetting insulated filler and a forming process thereof. The thermosetting insulated filler comprises the following components in percentage by weight: 65-72% of molten silicon crystal powder, 2-4% of aluminum dihydrogen phosphate powder, and the balance of water. The particle size of the molten silicon crystal powder is 200-400 mesh. The formed slurry has good fluidity, and the formed material has good solidifying effect and excellent insulating and heat-conducting properties and can resist a high temperature up to 900 DEG C. The thermosetting insulated filler of the invention has the characteristics of low cost, easily-accessible raw material, and simple forming process, and has less process steps compared to the prior art.

Description

technical field [0001] The invention relates to the technical field of production and processing of heating tubes, in particular to a thermosetting insulating filling material and a molding process thereof. Background technique [0002] At present, the common heating tube filler is mostly magnesium oxide powder, which is prefabricated with silicone oil and filled into the heating tube to play the role of insulation and heat conduction. However, this kind of magnesium oxide powder is relatively loose, and needs to be used in conjunction with the shrinking process. After shrinking, it needs to be annealed to eliminate work hardening before the next step of processing can be carried out. This type of filler is not suitable for heating tubes that cannot be shrunk; for this type of heating element, the common process is to add a curing agent such as oxidation resin to cure, but the working temperature of the insulating material after adding it cannot exceed 180 ° C, which limits ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34H01B3/08
CPCC04B28/344H01B3/08C04B14/06
Inventor 付真荣潘伟魏振球孙浩
Owner 安徽苏立科技股份有限公司
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