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High-toughness polyvinyl butyral film and preparation method thereof

A polyvinyl butyral adhesive film and polyvinyl butyral technology are applied in the field of preparation of high-toughness polyvinyl butyral adhesive films and high-toughness polyvinyl butyral adhesive films, and can solve PVB problems. The lack of elasticity of the diaphragm, the improvement of weather resistance, and the poor softness of the film achieve the effects of good viscosity, good softness, and accelerated reaction speed.

Inactive Publication Date: 2015-09-16
ZHEJIANG VENECIA DECORATIVE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PVB granules are made into PVB membranes by casting method. The PVB membranes prepared with traditional formula are full of acetal groups and hydroxyl groups on the long chain of PVB, and lack elastic phase. The test shows that the obtained PVB membranes lack elasticity and softness. Good, insufficient toughness, at the same time, the improvement of weather resistance has also reached a bottleneck

Method used

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  • High-toughness polyvinyl butyral film and preparation method thereof
  • High-toughness polyvinyl butyral film and preparation method thereof
  • High-toughness polyvinyl butyral film and preparation method thereof

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Embodiment 1

[0025] Embodiment 1 of a kind of high-toughness polyvinyl butyral adhesive film of the present invention comprises following components, and each component weight is respectively:

[0026]

[0027]

[0028] Wherein, the mass fraction of the hydrochloric acid is 25%.

[0029] The preparation method of this kind of high-toughness polyvinyl butyral adhesive film comprises the following steps successively:

[0030] Step 1. Dissolve polyvinyl alcohol and 1 / 2 n-butyraldehyde in deionized water, and heat to 85°C, slowly add 1 / 2 hydrochloric acid dropwise while stirring, the hydrochloric acid is added dropwise within 1.5h, continue stirring for 5h , cooling down to 30-40°C in a 20-25°C water bath to obtain a mixed solution;

[0031] Step 2: Add pentaerythritol and the remaining n-butyraldehyde to the mixed solution, add ethanolamine and abietic acid, heat to 65°C, and slowly add the remaining hydrochloric acid dropwise while stirring. The hydrochloric acid is added dropwise wit...

Embodiment 3

[0041] Embodiment 3 of a kind of high-toughness polyvinyl butyral adhesive film of the present invention comprises following components, and each component weight is respectively:

[0042]

[0043]

[0044] Wherein, the mass fraction of the hydrochloric acid is 20%.

[0045] The preparation method of this kind of high-toughness polyvinyl butyral adhesive film comprises the following steps successively:

[0046]Step 1. Dissolve polyvinyl alcohol and 1 / 2 n-butyraldehyde in deionized water, and heat to 90°C. Slowly add 1 / 2 hydrochloric acid dropwise while stirring. The hydrochloric acid is added dropwise within 1 hour. After continuing to stir for 4 hours, Cool down to 30-40°C in a 20-25°C water bath to obtain a mixed solution;

[0047] Step 2: Add pentaerythritol and the remaining n-butyraldehyde, ethanolamine and abietic acid to the mixed solution, heat to 75°C, and slowly add the remaining hydrochloric acid dropwise while stirring. The hydrochloric acid is added dropwis...

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Abstract

The invention discloses a high-toughness polyvinyl butyral film. The high-toughness polyvinyl butyral film is prepared from the following components in parts by weight: 100 parts of polyvinyl alcohol, 30-55 parts of butanal, 5-10 parts of hydrochloric acid, 15-30 parts of triethylene glycol di-2-ethylhexoate, 10-20 parts of pentaerythritol, 5-15 parts of ethanolamine, 2-7 parts of abietic acid and 300-800 parts of deionized water. The high-toughness polyvinyl butyral film has excellent adherence, has both softness and toughness, and also has excellent weather fastness. The invention also discloses a preparation method of the high-toughness polyvinyl butyral film.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a high-toughness polyvinyl butyral film and a preparation method of the high-toughness polyvinyl butyral film. Background technique [0002] Polyvinyl butyral referred to as PVB, polyvinyl butyral resin has high transparency, cold resistance, impact resistance, anti-ultraviolet and other superior properties, and has good compatibility with metal, glass, wood, ceramics, fiber products, etc. cohesion. Polyvinyl butyral resin can be used to make interlayer materials for safety glass. The prepared safety glass has good transparency and high impact strength, and is widely used in aviation and automobile fields. In the paint industry, it is used to prepare anti-corrosion coatings, which have strong anti-rust ability; it can also prepare metal primers and cold-proof paints with good adhesion and water resistance. In the ceramic industry, it is used to make film decals with bri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J129/14C09J11/06C08F16/06C08F8/28
Inventor 吴坤燊
Owner ZHEJIANG VENECIA DECORATIVE MATERIAL
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