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Method for improving dispersibility of PVB film viscosity regulator

A technology of viscosity modifier and dispersibility, which is applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., and can solve problems such as uneven dispersion of viscosity modifiers, insufficient mixing of plasticizers and PVB resins, etc. Achieve the effects of stable tapping value, low haze and high light transmittance

Active Publication Date: 2020-11-17
安徽皖维皕盛新材料有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems in the above-mentioned prior art, the present invention provides a method for improving the dispersibility of the PVB film viscosity modifier, the purpose is to solve the viscosity modifier in the Uneven dispersion in PVB film, insufficient mixing of plasticizer and PVB resin, etc.

Method used

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  • Method for improving dispersibility of PVB film viscosity regulator

Examples

Experimental program
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Effect test

Embodiment 1

[0033] According to parts by mass, 0.015 parts of potassium hydroxide, 0.005 parts of potassium acetate and 1 part of deionized water are made into viscosity modifiers, which are passed through the conveying pipeline and enter the emulsification together with 27 parts of plasticizer triethylene glycol diisocaprylate In the pump, a homogeneous emulsion with a pH of 9 was prepared. The homogeneous emulsion is transported to the premixer through the pipeline to be fully mixed with 100 parts of PVB resin to form a mixture, and the cooling temperature of the premixer is set to 10°C. The mixture is melted and plasticized by an extruder, and then extruded and cast to obtain PVB film.

Embodiment 2

[0035] According to parts by mass, 0.015 parts of potassium hydroxide, 0.005 parts of potassium acetate and 1 part of deionized water are made into viscosity modifiers, which are passed through the conveying pipeline and enter the emulsification together with 27 parts of plasticizer triethylene glycol diisocaprylate In the pump, a homogeneous emulsion with a pH of 9 is prepared; the homogeneous emulsion is transported to an extruder to be melted and plasticized with 100 parts of PVB resin, extruded and casted to obtain PVB film.

Embodiment 3

[0037] According to parts by mass, 0.015 parts of potassium hydroxide, 0.005 parts of potassium acetate and 1 part of deionized water are made into viscosity modifiers, and are transported to premix with 27 parts of plasticizer triethylene glycol diisocaprylate through a conveying pipeline The machine is fully mixed with 100 parts of PVB resin to form a mixture, and the cooling temperature of the premixer is set to 10°C. The mixture is melted and plasticized by an extruder, and then extruded and casted to obtain PVB film.

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Abstract

The invention discloses a method for improving dispersibility of a PVB film viscosity regulator, which comprises the following steps: fully mixing a plasticizer and the viscosity regulator by an emulsification pump to form a homogeneous emulsion, uniformly dispersing the homogeneous emulsion in PVB resin by a premixing machine, conveying the obtained mixture to an extruder, and carrying out melt plasticization and extrusion casting to finally form a PVB film. The PVB film produced by the method is low in haze, high in light transmittance and high in tensile strength, the knocking value is stabilized at 5-6, and the problems of non-uniform dispersion of a viscosity regulator and separation of a plasticizer are solved.

Description

Technical field [0001] The invention belongs to the technical field of PVB film production, and specifically relates to a method for improving the dispersibility of a PVB film viscosity modifier. Background technique [0002] Polyvinyl butyral (Polyvinyl Butyral Resin, PVB) film, also known as PVB film, PVB intermediate film, is a plasticized film based on PVB resin, because it has transparency, light resistance, heat resistance, sound insulation, softness, It has excellent properties of anti-fog, low temperature non-hardening and good adhesion to glass, and is widely used in safety laminated glass such as automobile front windshield, high-rise buildings, curtain walls, bulletproof and other safety. [0003] Safety laminated glass is a special glass made by sandwiching a layer of PVB film between two layers of ordinary glass. When subjected to a strong external impact, the PVB film absorbs a large amount of impact energy through a certain elastic bending and deformation, and the gl...

Claims

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Application Information

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IPC IPC(8): C08J3/20C09J7/10C09J129/14C09J11/04C09J11/06C03C27/12
CPCC08J3/2053C09J7/10C09J129/14C09J11/04C09J11/06C03C27/10C08J2329/04C09J2429/00C08K3/22C08K5/098C08K5/103
Inventor 刘帮柱沈小罡薛松肖丰田陈玲玲翟士豹
Owner 安徽皖维皕盛新材料有限责任公司