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PVB (polyvinyl butyral) adhesive sheet

A film and resin technology, applied in the field of polyvinyl butyral ester materials, can solve the problems of aging and degumming, and achieve the effects of slowing down the hydrolysis speed, preventing the decrease of adhesive force, and excellent wet state adhesive force.

Active Publication Date: 2021-11-23
建滔(佛冈)特种树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that PVB films in the prior art are easily corroded by water vapor and cause aging and degumming, one of the objectives of the present invention is to provide a PVB film with good cohesiveness and good water absorption stability. Two of the purpose of the present invention is to provide the preparation method of this PVB film, and three of the purpose of the present invention is to provide the application of this PVB film

Method used

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  • PVB (polyvinyl butyral) adhesive sheet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dissolve 100g of 1010, 100g of 168, 65g of 770, and 135g of UV326 in 28kg of triethylene glycol diisocaprylate (plasticizer). The temperature for heating and dissolving is 70°C. After complete dissolution, add 6g of silane coupling agent (A-186), 50g of 1,2-pentanediol, stirred evenly, and kept warm for 60min for later use.

[0033] (2) Extruder heating: extruder segmental heating zone Z1: 40°C, Z2: 60°C, Z3: 60°C, Z4: 90°C, Z5: 120°C, Z6: 150°C, Z7: 150°C, Z8: 150°C, die head temperature Z: 150°C.

[0034] (3) Feeding ratio during extrusion: The mass ratio of PVB resin powder to triethylene glycol diisocaprylate is 72:28.

[0035](4) The raw materials are mixed, extruded, stretched, shaped in a water tank, squeezed by a water roller, dried with hot air, and wound to obtain a finished film.

Embodiment 2

[0037] (1) Dissolve 100g of 1010, 100g of 168, 65g of 770, and 135g of UV326 in 28kg of triethylene glycol diisocaprylate (plasticizer). The temperature for heating and dissolving is 70°C. After complete dissolution, add 6g of silane coupling agent (A-186), 50g of monoglyceride citrate were stirred evenly, and kept warm for 60 minutes for later use.

[0038] (2) Extruder heating: extruder segmental heating zone Z1: 40°C, Z2: 60°C, Z3: 60°C, Z4: 90°C, Z5: 120°C, Z6: 150°C, Z7: 150°C, Z8: 150°C, die head temperature Z: 150°C.

[0039] (3) Feeding ratio during extrusion: The mass ratio of PVB resin powder to triethylene glycol diisocaprylate is 72:28.

[0040] (4) The raw materials are mixed, extruded, stretched, shaped in a water tank, squeezed by a water roller, dried with hot air, and wound to obtain a finished film.

Embodiment 3

[0042] (1) Dissolve 100g of 1010, 100g of 168, 65g of 770, and 135g of UV326 in 28kg of triethylene glycol diisocaprylate (plasticizer). The temperature for heating and dissolving is 70°C. After complete dissolution, add 6g of silane coupling agent (A-186), 25g of 1,2-pentanediol, stirred evenly, and kept warm for 60min for later use.

[0043] (2) Extruder heating: extruder segmental heating zone Z1: 40°C, Z2: 60°C, Z3: 60°C, Z4: 90°C, Z5: 120°C, Z6: 150°C, Z7: 150°C, Z8: 150°C, die head temperature Z: 150°C.

[0044] (3) Feeding ratio during extrusion: The mass ratio of PVB resin powder to triethylene glycol diisocaprylate is 72:28.

[0045] (4) The raw materials are mixed, extruded, stretched, shaped in a water tank, squeezed by a water roller, dried with hot air, and wound to obtain a finished film.

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Abstract

The invention discloses a PVB (polyvinyl butyral) adhesive sheet. The PVB adhesive sheet comprises the following components: PVB resin, a plasticizer, an antioxidant, a light stabilizer, a binding power regulator and a coupling agent. The PVB adhesive sheet prepared by the invention has high adhesion to glass, and when the glass is laminated under the condition that the moisture content is 2%, the knocking grade of laminated glass can still reach grade 4 or above; the edge part is not degummed after being boiled in water for 72 hours and subjected to a moisture-proof test for 28 days, and the PVB adhesive sheet has excellent wet-state adhesive force, can be widely applied to automobiles and buildings, and has remarkable economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of polyvinyl butyral (PVB) materials, in particular to a PVB film. Background technique [0002] PVB (polyvinyl butyral ester) film, also known as PVB film or PVB interlayer, is the best material for making laminated safety glass in the world today. PVB film is made of PVB resin, which is non-toxic, odorless, non-corrosive, non-flammable, and has good light transmission, insulation, weather resistance, wear resistance, water resistance, oil resistance, and aging resistance. Plexiglass has special adhesion and light transmission properties. Therefore, PVB film is widely used in automobiles, buildings, various bulletproof glass, aerospace vehicles, military instruments, solar cells, composite shock-absorbing steel plates for industry, etc., and the market prospect is very broad. [0003] Due to the rapid development of the demand for PVB laminated glass, the quality requirements for the film are also getting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/30C09J129/14C09J11/06C03C27/12
CPCC09J7/10C09J7/30C09J129/14C09J11/06C03C27/10C08K5/5435C08K5/053C08K5/11
Inventor 林家宝
Owner 建滔(佛冈)特种树脂有限公司
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