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Directly-sprayable PUR glue and production method thereof

A production method and glue technology, applied in the field of PUR glue, can solve the problems of poor initial viscosity and inconvenient use of PUR glue, and achieve good stickiness

Inactive Publication Date: 2019-01-01
江苏惠沣环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PUR adhesives in the prior art are basically hot-melt adhesives, which need to be heated and melted before spraying, which is inconvenient to use, and the PUR adhesives in the prior art have poor initial viscosity and need to be melted after cooling. will have better viscosity

Method used

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  • Directly-sprayable PUR glue and production method thereof

Examples

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Comparison scheme
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Embodiment 1

[0021] This specific embodiment discloses a kind of PUR glue that can be directly sprayed, and is made up of following composition:

[0022] 5 parts of tackifier, 40 parts of liquid polyurethane latex, 15 parts of solvent and 1 part of modifier. Feasibly, the tackifier is a phenolic resin tackifier, the solvent is ethyl acetate, and the modifier is a nano filler. The nano-filler can be one or more of nano-titanium dioxide, nano-silicon dioxide and nano-tin dioxide. The particle diameter of the nano filler is 40-220 nanometers.

Embodiment 2

[0024] This specific embodiment discloses a kind of PUR glue that can be directly sprayed, and is made up of following composition:

[0025] 6 parts of tackifier, 50 parts of liquid polyurethane latex, 17.5 parts of solvent and 2 parts of modifier. Feasibly, the tackifier is a phenolic resin tackifier, the solvent is ethyl acetate, and the modifier is a nano filler. The nano-filler can be one or more of nano-titanium dioxide, nano-silicon dioxide and nano-tin dioxide. The particle diameter of the nano filler is 40-220 nanometers.

Embodiment 3

[0027] This specific embodiment discloses a kind of PUR glue that can be directly sprayed, and is made up of following composition:

[0028] 7 parts of tackifier, 60 parts of liquid polyurethane latex, 20 parts of solvent and 3 parts of modifier. Feasibly, the tackifier is a phenolic resin tackifier, the solvent is ethyl acetate, and the modifier is a nano filler. The nano-filler can be one or more of nano-titanium dioxide, nano-silicon dioxide and nano-tin dioxide. The particle diameter of the nano filler is 40-220 nanometers.

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Abstract

The invention discloses a directly-sprayable PUR glue. The directly-sprayable PUR glue comprises 5-7 parts of a tackifier, 40-60 parts of a liquid polyurethane glue emulsion, 15-20 parts of a solventand 1-3 parts of a modifier. The invention also discloses a production method for the directly-sprayable PUR glue. The production method comprises the following steps: step 1, putting 15-20 parts of the solvent and 40-60 parts of the liquid polyurethane glue emulsion in a mixing drum for sufficient stirring; step 2, adding 1-3 parts of the modifier into the mixing drum and carrying out mixing under stirring; step 3, adding 5-7 parts of the tackifier and carrying out uniform mixing before mixing and usage of the produced glue. The invention has the following advantages: the PUR glue, the solvent and the modifier are compounded, so on the one hand, the PUR glue can be directly sprayed after mixing with the solvent, and on the other hand, after spraying of the glue, the PUR glue undergoes a reaction and chain extension with moisture existing in the air and adhered on the surface of a glued object after the solvent is totally evaporated so as to form a polymer having high cohesion; and thus, the PUR glue is remarkably improved in adhesion, heat resistance, low-temperature resistance and the like.

Description

technical field [0001] The invention relates to PUR glue, in particular to a directly sprayable PUR glue and a production method thereof. Background technique [0002] Polyurethane glue (PUR glue) is a glue containing urethane and isocyanate groups in the molecular chain. Due to the strong polar isocyanate and urethane groups, it has high reactivity and can be cured at room temperature. , Glass, ceramics, plastics, wood, fabrics, leather and many other materials have excellent adhesive properties, and have a wide range of applications in many fields such as construction, textiles, and home decoration. The PUR adhesives in the prior art are basically hot-melt adhesives, which need to be heated and melted before spraying, which is inconvenient to use, and the PUR adhesives in the prior art have poor initial viscosity and need to be melted after cooling. Will have better viscosity. Contents of the invention [0003] The technical problem to be solved by the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/08C09J11/04
CPCC08K2003/2231C08K2003/2241C08K2201/011C09J11/04C09J11/08C09J175/04C08L61/06C08K3/22C08K3/36
Inventor 刘卫峰
Owner 江苏惠沣环保科技有限公司