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High-viscosity polyurethane sealant

A polyurethane sealant, high-viscosity technology, used in polyurea/polyurethane adhesives, polymer adhesive additives, non-polymer adhesive additives, etc. Discoloration etc.

Active Publication Date: 2015-02-18
广州市百庄复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane resin is widely used as a main sealing material raw material. However, due to the difficulty in processing polyurethane itself, the product quality is relatively average, and the bonding strength cannot meet the current use requirements, making the bonding effect during use poor.
Moreover, the oxidation resistance of polyurethane itself is average, and it is easy to age and change color after long-term use, making the use effect worse

Method used

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Examples

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Embodiment Construction

[0008] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0009] The present invention is a high-viscosity polyurethane sealant, including polyurethane resin, tackifier, crosslinking agent, plasticizer, anti-scratch agent and ultraviolet absorber, the tackifier is rosin pentaerythritol ester, and the The crosslinking agent is hydroxypropyl acrylate, the plasticizer is dioctyl phthalate, the anti-scratch agent is carnauba wax, and the ultraviolet absorber is resorcinol monobenzoate. The percentages by weight of the components of the high-viscosity polyurethane sealant are: the polyurethane resin accounts for 84.7%-89.2%, the rosin pentaerythritol ester accounts for 2.6%-3.5%, and the hydroxypropyl acrylate accounts for 1.9%-2.8%, The dioctyl phthalate a...

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PUM

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Abstract

The invention discloses a high-viscosity polyurethane sealant. The polyurethane sealant is prepared from polyurethane resin, a tackifier, a crosslinking agent, a plasticizer, an anti-scratching agent and an ultraviolet absorbent, wherein the tackifier is pentaerythritol ester of rosin, the crosslinking agent is hydroxy-propyl acrylate, the plasticizer is dioctyl phthalate, the anti-scratching agent is palm wax, and the ultraviolet absorbent is resorcinol monobenzoate. The high-viscosity polyurethane sealant is prepared from polyurethane resin and five additives, namely the tackifier, the crosslinking agent, the plasticizer, the anti-scratching agent and the ultraviolet absorbent, and the prepared product has the advantages of strong viscosity, high quality, convenience in processing, good scratching resistance, aging resistance, discoloring resistance and good using effect.

Description

technical field [0001] The invention relates to sealing materials, in particular to a high-viscosity polyurethane sealant. Background technique [0002] The sealing material refers to the material that can withstand the displacement of the joint to achieve the purpose of airtightness and watertightness and is embedded in the joint of the building, called the sealing material. Seal materials include metallic materials (aluminum, lead, indium, stainless steel, etc.), non-metallic materials (rubber, plastic, ceramics, graphite, etc.), composite materials (such as rubber-asbestos board, airgel felt-polyurethane), but The most used is rubber-like elastomer material. Polyurethane resin is widely used as a main sealing material raw material. However, due to the difficulty in processing polyurethane itself, the product quality is relatively average, and the bonding strength cannot meet the current use requirements, making the bonding effect during use poor. . Moreover, the oxidat...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/08C09J11/06
Inventor 方俊
Owner 广州市百庄复合材料有限公司
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