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Special pipeline heat insulation material for heating system and preparation method thereof

A technology for pipe insulation and heating systems, which is applied in the field of special pipe insulation for heating systems. It can solve the problems of easy burning of foam and non-flame retardancy, and achieve the effects of good flame retardancy, good flame retardancy and stable performance.

Inactive Publication Date: 2018-07-13
HEBEI JIASHICHENG ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary polyurethane rigid foam molding pipes generally have problems such as non-flame retardancy and foam flammability, causing major safety accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment relates to a special pipe insulation material for heating systems, including the following raw materials in parts by weight: 13 parts of urea-formaldehyde foam plastic powder, 30 parts of polypropylene resin, 10 parts of silane-grafted polyethylene, 16 parts of polyether polyol, modified 7 parts of diatomaceous earth, 12 parts of expanded vitrified microbeads, 3 parts of cellulose ether, 2 parts of foaming agent, 1 part of ultraviolet absorber, and 1 part of antioxidant.

[0027] Wherein, the silane-grafted polyethylene is prepared by putting polyethylene, silane, and peroxidant into a plastic extruder, mixing, kneading, and cooling granulation at 180°C.

[0028] Wherein, the modified diatomite is prepared by the following method:

[0029] In the sodium hydroxide solution of 0.07mol / L, add its 3 times mass parts of roasted diatomite, then dropwise add magnesium chloride solution while stirring, filter until the filtrate is neutral, grind the filter cake ...

Embodiment 2

[0038] This embodiment relates to a special pipe insulation material for heating systems, including the following raw materials in parts by weight: 19 parts of urea-formaldehyde foam plastic powder, 45 parts of polypropylene resin, 20 parts of silane-grafted polyethylene, 23 parts of polyether polyol, modified 14 parts of diatomaceous earth, 18 parts of expanded vitrified microbeads, 6 parts of cellulose ether, 4 parts of foaming agent, 3 parts of ultraviolet absorber, and 2 parts of antioxidant.

[0039] Wherein, the silane-grafted polyethylene is prepared by putting polyethylene, silane, and peroxidant into a plastic extruder, mixing, kneading, and cooling granulation at 180°C.

[0040] Wherein, the modified diatomite is prepared by the following method:

[0041] In the sodium hydroxide solution of 0.07mol / L, add its 3 times mass parts of roasted diatomite, then dropwise add magnesium chloride solution while stirring, filter until the filtrate is neutral, grind the filter ca...

Embodiment 3

[0050] This embodiment relates to a special pipe insulation material for heating systems, including the following raw materials in parts by weight: 15 parts of urea-formaldehyde foam plastic powder, 33 parts of polypropylene resin, 14 parts of silane-grafted polyethylene, 19 parts of polyether polyol, modified 8 parts of diatomaceous earth, 15 parts of expanded vitrified microbeads, 4 parts of cellulose ether, 2.6 parts of foaming agent, 1.8 parts of ultraviolet absorber, and 1.3 parts of antioxidant.

[0051] Wherein, the silane-grafted polyethylene is prepared by putting polyethylene, silane, and peroxidant into a plastic extruder, mixing, kneading, and cooling granulation at 180°C.

[0052] Wherein, the modified diatomite is prepared by the following method:

[0053] In the sodium hydroxide solution of 0.07mol / L, add its 3 times mass parts of roasted diatomite, then dropwise add magnesium chloride solution while stirring, filter until the filtrate is neutral, grind the filt...

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PUM

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Abstract

The invention discloses a special pipeline heat insulation material for a heating system. The special pipeline heat insulation material is prepared from the following raw materials in parts by weight:13 to 19 parts of urea-formaldehyde foam plastic powder, 30 to 45 parts of polypropylene resin, 10 to 20 parts of silane grafted polyethylene, 16 to 23 parts of polyether glycol, 7 to 14 parts of modified diatomite, 12 to 18 parts of expanded vitrified microspheres, 3 to 6 parts of cellulose ether, 2 to 4 parts of foaming agent, 1 to 3 parts of ultraviolet absorbent and 1 to 2 parts of antioxidant. The special pipeline heat insulation material for the heating system, disclosed by the invention, has the advantages of good flame-retarding performance, low thermal conductivity coefficient, goodheat insulation performance, high safety performance and low production cost.

Description

[0001] technical field [0002] The invention belongs to the technical field of heat preservation of special pipes for heating systems, and in particular relates to a special heat preservation material for pipes of heating systems and a preparation method thereof. Background technique [0003] Polyurethane foam is currently the best of all thermal insulation materials, and is widely used in heating pipes, refrigerator freezers, building insulation, etc. In my country, ordinary heat pipe insulation materials have been used for many years, and the technology has been relatively mature. Can meet the requirements of use. However, ordinary polyurethane rigid foam molding pipes generally have problems such as non-flame retardancy and foam flammability, which cause major safety accidents. Contents of the invention [0004] The invention provides a special pipe insulation material for a heating system and a preparation method thereof, which solves the problems in the above-ment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L61/24C08L71/00C08K13/06C08K9/02C08K7/26C08K7/24C08J9/14
CPCC08J9/144C08J2203/142C08J2323/12C08J2461/24C08J2471/00C08K7/24C08K7/26C08K9/02C08K13/06
Inventor 白莉莉
Owner HEBEI JIASHICHENG ENERGY TECH CO LTD
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