Polyurethane pouring sealant for wind driven generator rotor coating protection and preparation method thereof

A technology of wind power generator and polyurethane, which is applied in the field of polyurethane potting adhesive and its preparation, which can solve the problems of poor mechanical properties, short application period, and low waterproof performance of potting adhesive, and achieve excellent waterproof performance, tight protection, and avoid physical damage. Threats and Effects of Environmental Pollution

Pending Publication Date: 2021-11-23
浙江博菲电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional two-component polyurethane potting adhesives have relatively poor mechanical properties, relatively low hardness, tensile strength, impact strength, tensile shear strength, and relatively large volume shrinkage at room temperature; and when used at room temperature The pot life is short and cannot fully meet the requirements of the operation time required for potting
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Method used

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Example Embodiment

[0038] The present invention will be further described below in conjunction with specific embodiments.

[0039] The present invention is used for a polyurethane pupping of a wind turbine rotor coating, including A, B two components, wherein the group A is divided into resins, fillers, auxiliaries, and B components into curing agents, A The mass ratio of the b component is 100: 30.

[0040] The A component consists of the raw material of the following mass:

[0041] 45 ~ 55 polyols;

[0042] 30 to 40 calcium carbonate;

[0043] 1 to 5 titanium white powder;

[0044] Device 5 to 10 parts;

[0045] 0.5 ~ 2 parts of surfactant;

[0046] Wetted dispersant 0.1 ~ 1 part;

[0047] Flatant 0.1 ~ 1 part;

[0048] Attachment promoters 0.1 ~ 1 part;

[0049] Antifoam agent 0.1 ~ 1 part;

[0050] The B component consists of a material of the following mass:

[0051] 2,4-diphenylmethane diisocyanate and 4,4'-diphenylmethane diisocyanate 1: 1 mixture (MDI-50): 97 ~ 99 parts;

[0052] 1 to 3 dry ...

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Abstract

The invention discloses a polyurethane pouring sealant for wind driven generator rotor coating protection. The polyurethane pouring sealant comprises a component A and a component B, wherein the component A comprises resin, filler and auxiliary agents, the component B is a curing agent, and the mass ratio of the component A to the component B is 100:30 when the component A and the component B are mixed. A preparation method of the polyurethane pouring sealant for wind driven generator rotor coating protection comprises the following steps: preparation of the component A: taking 45-55 parts of polyol, 0.5-2 parts of a surfactant, 0.1-1 part of a wetting dispersant, 0.1-1 part of a leveling agent, 0.1-1 part of an adhesion promoter and 0.1-1 part of an antifoaming agent, and fully stirring and uniformly mixing; then adding 30-40 parts of calcium carbonate powder, 1-5 parts of titanium dioxide and 5-10 parts of a dewatering agent, and fully dispersing by using a high-speed dispersion machine; and after uniformly dispersing, stirring in vacuum to obtain the component A; and preparation of the component B: taking 97-99 parts of MDI-50 and 1-3 parts of a drying dewatering agent, and performing vacuum stirring to obtain the component B.

Description

technical field [0001] The invention belongs to the field of two-component polyurethane adhesives, and in particular relates to a polyurethane potting adhesive used for wind-driven generator rotor coating protection and a preparation method thereof. Background technique [0002] Traditional two-component polyurethane potting adhesives have relatively poor mechanical properties, relatively low hardness, tensile strength, impact strength, tensile shear strength, and relatively large volume shrinkage at room temperature; and when used at room temperature The pot life is short and cannot fully meet the requirements of the operation time required for potting. Moreover, bubbles and pores are likely to appear in the cured adhesive layer of the existing potting compound; in addition, the existing potting compound has low waterproof performance and is easily eroded by moisture when used in offshore wind power. Traditional two-component polyurethane potting adhesives contain volatile...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/06C09J11/08C08G18/48C08G18/67
CPCC09J175/14C09J11/06C09J11/08C08G18/48C08G18/36C08G2170/00C08K2003/265C08K5/5425C08K5/10C08K5/098C08K3/26
Inventor 狄宁宇虞希高程微沈斌许坤平佳慧王关全陆云峰
Owner 浙江博菲电气股份有限公司
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