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Metal bellows adhesive based on nano cellulose modification and preparation method thereof

A nanocellulose and metal bellows technology, applied in the field of material chemistry, can solve the problems of long curing time and inconvenient use, and achieve the effects of suitable water absorption, weakening brittleness and shortening curing time.

Inactive Publication Date: 2017-03-29
WUXI YONGXING METAL HOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the adhesive described in the above-mentioned prior art has a high water absorption rate, and the water absorption rate can reach more than 125% with time, so it is inconvenient to use and has a long curing time.

Method used

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  • Metal bellows adhesive based on nano cellulose modification and preparation method thereof

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Effect test

Embodiment 1

[0024] A metal bellows adhesive based on nanocellulose modification, which is made of the following components in proportion by weight: 18 parts of polyurethane, 12 parts of epoxy resin, 11 parts of polyvinyl alcohol, and 9 parts of polyvinyl chloride , 8 parts of nanocellulose MFC, 8 parts of magnesium sulfate, 8 parts of iron oxide, 5 parts of aluminum oxide, and 11 parts of borax.

[0025] A method for preparing a metal bellows adhesive based on nanocellulose modification, comprising the following steps:

[0026] (1) Adhesive matrix preparation: mix polyurethane and epoxy resin, add tetrahydrofuran to it, the total mass of the mixture: the volume of tetrahydrofuran is 1:2, stir and mix well, heat to 78°C, and stir while heating to obtain Adhesive matrix;

[0027] (2) Preparation of the first modifying agent: mix nanocellulose, magnesium sulfate, iron oxide and aluminum oxide, grind them into powder, add sulfuric acid solution with a mass fraction of 13% therein, and stir u...

Embodiment 2

[0033] A metal bellows adhesive based on nano-cellulose modification, which is made of the following components in proportion by weight: 32 parts of polyurethane, 28 parts of epoxy resin, 21 parts of polyvinyl alcohol, and 18 parts of polyvinyl chloride , 16 parts of nanocellulose MFC, 15 parts of magnesium sulfate, 17 parts of iron oxide, 9 parts of aluminum oxide, and 15 parts of borax.

[0034] A method for preparing a metal bellows adhesive based on nanocellulose modification, comprising the following steps:

[0035] (1) Adhesive matrix preparation: mix polyurethane and epoxy resin, add tetrahydrofuran to it, the total mass of the mixture: the volume of tetrahydrofuran is 1:4, stir and mix well, heat to 86°C, and stir while heating to obtain Adhesive matrix;

[0036] (2) Preparation of the first modifying agent: mix nanocellulose, magnesium sulfate, iron oxide and aluminum oxide, grind them into powder, add sulfuric acid solution with a mass fraction of 22% therein, and s...

Embodiment 3

[0042] A metal bellows adhesive based on nanocellulose modification, which is made of the following components in proportion by weight: 39 parts of polyurethane, 35 parts of epoxy resin, 25 parts of polyvinyl alcohol, and 21 parts of polyvinyl chloride , 22 parts of nanocellulose MFC, 21 parts of magnesium sulfate, 23 parts of iron oxide, 14 parts of aluminum oxide, and 20 parts of borax.

[0043]A method for preparing a metal bellows adhesive based on nanocellulose modification, comprising the following steps:

[0044] (1) Adhesive matrix preparation: mix polyurethane and epoxy resin, add tetrahydrofuran to it, the total mass of the mixture: the volume of tetrahydrofuran is 1:5, stir and mix well, heat to 102°C, and stir while heating to obtain Adhesive matrix;

[0045] (2) Preparation of the first modifying agent: mix nanocellulose, magnesium sulfate, iron oxide and aluminum oxide and grind them into powder, add sulfuric acid solution with a mass fraction of 28% therein, an...

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Abstract

The invention discloses a metal bellows adhesive based on nano cellulose modification and a preparation method thereof. The metal bellows adhesive is prepared from the following components in parts by weight: 18-39 parts of polyurethane, 12-35 parts of epoxy resin, 11-25 parts of polyvinyl alcohol, 9-21 parts of polyvinyl chloride, 8-22 parts of nano cellulose MFC, 8-21 parts of magnesium sulfate, 8-23 parts of iron oxide, 5-14 parts of aluminum oxide and 11-20 parts of borax. The metal bellows adhesive disclosed by the invention has the advantages that firstly, the water absorption rate is appropriate, and the curing time of the adhesive is shortened; and secondly, the metal bellows adhesive based on nano cellulose modification weakens the brittleness of a pure resin adhesive and has good compatibility with a bonding medium.

Description

technical field [0001] The invention belongs to the field of material chemistry and relates to an adhesive, in particular to a metal bellows adhesive based on nano-cellulose modification and a preparation method thereof. Background technique [0002] Nanometer (nanometer) as a unit of length, equivalent to 10 -9 m. It includes two parts with approximately equal volume fraction: one is the particles with a diameter of several or tens of nanometers, and the other is the interface between nanoparticles. The former is a crystal structure with long-range order, and the latter is neither long-range order nor short-range order. With the development of science and technology, people have applied nanotechnology to materials. Nanomaterials can be roughly divided into six categories: nanopowder (zero-dimensional), nanofiber (one-dimensional), nanofilm (two-dimensional), nanoblock (three-dimensional), nanocomposite, and nanostructure. [0003] Cellulose is an inexhaustible and inexh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J163/00C09J11/04C09J11/08
CPCC09J175/04C08L2203/18C08L2205/035C09J11/04C09J11/08C08L63/00C08L1/02C08L29/04C08L27/06C08K2003/3063C08K2003/2227
Inventor 王铮
Owner WUXI YONGXING METAL HOSE
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