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Preparation method of insulating material for pipelines

A technology for thermal insulation materials and pipes, applied in the field of thermal insulation materials and preparation of pipes, can solve the problems of increased heat transfer of solids and reduced thermal insulation performance of thermal insulation materials, and achieves the effects of improving compactness, improving anti-aging and good dispersibility.

Inactive Publication Date: 2017-08-18
HEFEI ZHENXUN LOW TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, for example, since the increase in solid heat transfer is accompanied by an increase in density, there is a problem that the heat insulating performance of the heat insulating material decreases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a heat insulating material for pipelines, which includes the following components in parts by weight:

[0036] 75 parts of silica microparticles with an average particle diameter of 60-70nm,

[0037] Hollow ceramic fiber 15 parts,

[0038] Attapulgite clay particles 9 parts,

[0039] Hollow glass fiber 11 parts.

[0040] The modification method of described attapulgite clay is as follows:

[0041] (1) First, take the attapulgite and crush it until the particle size is 2-6 meshes. Add the crushed attapulgite to clean water 10-13 times the mass of the attapulgite, stir evenly, and soak for 10-15 hours , centrifuged for 10-25min, the rotating speed of the centrifuge is 1600-1700r / min, after centrifugation, the primary product of attapulgite is obtained through filtering and drying steps;

[0042] (2) First, use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 2.5-3.5%, put the primary product of the attapulg...

Embodiment 2

[0050] This embodiment provides a heat insulating material for pipelines, which includes the following components in parts by weight:

[0051] 50 parts of silica microparticles with an average particle diameter of 60-70nm,

[0052] Hollow ceramic fiber 23 parts,

[0053] Attapulgite clay particles 2 parts,

[0054] Hollow glass fiber 15 parts.

[0055] The modification method of described attapulgite clay is as follows:

[0056] (1) First, take the attapulgite and crush it until the particle size is 2-6 meshes. Add the crushed attapulgite to clean water 10-13 times the mass of the attapulgite, stir evenly, and soak for 10-15 hours , centrifuged for 10-25min, the rotating speed of the centrifuge is 1600-1700r / min, after centrifugation, the primary product of attapulgite is obtained through filtering and drying steps;

[0057](2) First, use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 2.5-3.5%, put the primary product of the attapulgi...

Embodiment 3

[0065] This embodiment provides a heat insulating material for pipelines, which includes the following components in parts by weight:

[0066] 65 parts of silica microparticles with an average particle diameter of 60-70nm,

[0067] Hollow ceramic fiber 15 parts,

[0068] Attapulgite clay particles 6 parts,

[0069] Hollow glass fiber 11 parts.

[0070] The modification method of described attapulgite clay is as follows:

[0071] (1) First, take the attapulgite and crush it until the particle size is 2-6 meshes. Add the crushed attapulgite to clean water 10-13 times the mass of the attapulgite, stir evenly, and soak for 10-15 hours , centrifuged for 10-25min, the rotating speed of the centrifuge is 1600-1700r / min, after centrifugation, the primary product of attapulgite is obtained through filtering and drying steps;

[0072] (2) First, use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 2.5-3.5%, put the primary product of the attapulg...

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Abstract

The invention belongs to the technical field of insulating material manufacturing and provides an insulating material for pipelines and a preparation method. The insulating material for pipelines is prepared from, by weight, 50-75 parts of silicon dioxide particles with the average particle size pf 60-70 nm, 15-23 parts of hollow ceramic fiber, 2-9 parts of attapulgite clay particles and 11-15 parts of hollow glass fiber. The prepared insulating material has good insulating properties and high strength.

Description

technical field [0001] The invention belongs to the technical field of heat insulation material manufacturing, and in particular relates to a heat insulation material used for pipelines and a preparation method. Background technique [0002] In the existing technology for preparing heat insulating materials, silica particles, inorganic fibers, and binders are mixed, pressed and formed, and then mechanically processed to obtain heat insulating materials with low thermal conductivity and excellent heat insulating performance. [0003] In the above technique, since a binder is used, for example, degreasing is required, and there is a problem that the strength of the heat insulating material decreases due to this degreasing. In addition, the use of adhesives leads to an increased load on the environment. As described above, when using a binder, there are problems such as an increase in the number of steps, required time, and energy due to degreasing and the like. [0004] And ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02C04B111/10
CPCC04B30/02C04B2201/20C04B2201/32C04B2201/50C04B2111/1037C04B14/048C04B18/0475C04B14/46C04B20/008C04B20/0056C04B22/062C04B22/10
Inventor 周青松
Owner HEFEI ZHENXUN LOW TEMPERATURE TECH CO LTD
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