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Combined polyether, polyurethane insulation repair agent and its application method

A technology of combining polyether and thermal insulation layer, applied in the field of polyurethane, can solve the problems of low density, insufficient foam strength, and no time for manual operation, and achieve the effect of excellent performance and convenient use.

Inactive Publication Date: 2016-06-08
SHANGHAI DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects that the water tank orifice repairing agent in the prior art reacts too fast, too late for manual operation, and the density after free foaming is too low to reach the strength of the original foam. Provided is a composite polyether, polyurethane insulation layer repairing agent and its application method

Method used

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  • Combined polyether, polyurethane insulation repair agent and its application method
  • Combined polyether, polyurethane insulation repair agent and its application method
  • Combined polyether, polyurethane insulation repair agent and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0037] The specific components of the repairing agent for polyurethane insulation layer in Examples 1-3 are shown in Table 1 below. In Table 1, all values ​​represented are parts by weight.

[0038] Table 1

[0039] Components in polyurethane insulation repair agent

[0040] In each example, the components other than the isocyanate PM-200 were mixed uniformly to obtain the composite polyether. Before use, the composite polyether and the isocyanate PM-200 were stored separately.

Embodiment 4～6

[0042] The using method of polyurethane insulation repair agent, it may further comprise the steps:

[0043] Mix the combined polyether and isocyanate PM-200 in Examples 1-3 respectively in an airtight container, use an electric stirrer to stir for 8 seconds to mix until uniform, the stirring speed is shown in Table 2, and pour the stirred liquid into The defect position of the nozzle of the solar water tank can be obtained after curing; the curing time is shown in Table 2.

[0044] Table 2

[0045]

[0046]

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PUM

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Abstract

The invention discloses a combined polyether, a polyurethane heat insulation layer repairing agent and a use method thereof. The combined polyether comprises the following components by weight: 4-5 parts of polyether polyol SA460, 4-5 parts of polyether polyol SA380, 0.5-1 part of the polyester polyol AK-POL-3002, 0.2-0.3 part of a foam stabilizer, 0.1-0.3 part of a catalyst, 1.2-1.6 parts of a foaming agent and 0.12-0.18 part of water. The combined polyether provided by the invention can be used for a solar water tank pipe orifice heat insulation layer repairing agent, and is convenient to use. The formed polyurethane foam has excellent performance. The use method for the polyurethane heat insulation layer repairing agent provided by the invention is suitable for manual operation, and is simple and feasible.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a combination polyether and polyurethane insulation layer repairing agent and a use method thereof. Background technique [0002] With the increasing shortage of energy, countries all over the world are vigorously promoting renewable energy. Among them, solar water heaters are a major industry in the application of solar energy achievements. It has quickly won the favor of consumers due to its advantages in environmental protection, safety, energy saving, and sanitation. . China is a big energy-consuming country. The annual national energy consumption accounts for about 1 / 3 of the world's total energy consumption, and 1 / 3 of the country's total energy consumption comes from building energy consumption. "To ask for energy from the roof", solar water heaters are energy-saving equipment that absorb the radiant heat energy of the sun and heat cold water for people to use in life and prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/42C08J9/14C08J9/08C08L75/08C08L75/06
CPCC08G18/1808C08G18/1816C08G18/2036C08G18/4018C08G18/4816C08J9/08C08J9/144C08J2203/02C08J2203/142C08J2203/184C08J2375/08C08G2110/0025
Inventor 李心强李明许凤华于楠
Owner SHANGHAI DONGDA CHEM