pvb film and laminated glass

A technology of laminated glass and composition, applied in glass/slag layered products, layered products, chemical instruments and methods, etc., can solve problems such as easy agglomeration and poor mechanical properties of PVB films

Active Publication Date: 2022-05-27
怀德创建有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a PVB film and laminated glass for the problems of easy agglomeration and poor mechanical properties of the prepared PVB film in the synthesis of traditional PVB films.

Method used

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preparation example Construction

[0031] An embodiment of the present invention also provides a method for preparing the PVB film, which includes: heating and extruding the PVB composition at 140°C to 150°C.

[0032] Extrusion is a common method for preparing PVB films, and the uniform mixing of polyvinyl butyral with other film components is a key issue that limits the production of high-performance and high-quality PVB films by extrusion. The cross-linking agent system in the PVB composition of the embodiment of the present invention makes the PVB composition uniformly dispersed by dispersing the acid anhydride into the polyvinyl butyral more easily, strengthens the cross-linking of the polyvinyl butyral, and improves the preparation process of the PVB film. stability and crosslinking controllability and uniformity.

[0033] The embodiment of the present invention further provides a laminated glass, the intermediate film of the laminated glass includes the PVB film of the above-mentioned embodiment or the PV...

Embodiment 1

[0035] A mixture was obtained by blending 90 parts by weight of polyvinyl butyral resin with 8 parts by weight of 3GO, 25 parts by weight of crosslinking agent system, 0.26 parts by weight of antioxidant BHT and 0.13 parts by weight of UV326 agent. The cross-linking agent system is composed of 10% by mass of maleic anhydride, 50% of bis(2-ethylhexyl) phthalate and 40% of alkylphenol deoxyethylene ether. The mixture was mixed for 5 minutes using a mixing roll at a speed of 50 rpm and a set temperature of 130° C. to obtain a PVB composition. The PVB composition was extruded through an extruder to obtain a PVB film with a thickness of 0.76 mm. The PVB film can be used as a single-layer interlayer film for laminated glass.

Embodiment 2

[0037] A mixture was obtained by blending 90 parts by weight of polyvinyl butyral resin with 10 parts by weight of 3GO and 23 parts by weight of a crosslinking agent system, 0.26 parts by weight of antioxidant BHT and 0.13 parts by weight of UV326. The crosslinking agent system is composed of 5% by mass of maleic anhydride, 45% of dioctyl terephthalate and 55% of alkylsulfonate phenol. The mixture was mixed for 5 minutes using a mixing roll at a speed of 50 rpm and a set temperature of 130° C. to obtain a PVB composition. The PVB composition was extruded through an extruder to obtain a PVB film having a thickness of 0.76 mm. The PVB film can be used as a single-layer interlayer film for laminated glass.

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Abstract

The invention discloses a PVB film, which is prepared from a PVB composition. In parts by weight, the PVB composition includes 60-90 parts of polyvinyl butyral, 1-30 parts of a crosslinking agent system and a plasticizer 1-40 parts, the cross-linking agent system includes benzoic acid or benzoic acid analogues, alkylphenols and acid anhydrides in a mass ratio of (30-50):(40-60):(5-10) in sequence. The invention also discloses a laminated glass.

Description

technical field [0001] The present invention relates to the technical field of polymer materials, in particular to PVB films and laminated glass. Background technique [0002] Due to the excellent durability, safety, sound reduction and weather resistance of laminated glass, the demand in construction is expected to expand at an industrial level. Polyvinyl butyral (PVB) film can be used to make the interlayer of laminated glass. It is a polymer material formed by plasticizing and extruding PVB with a plasticizer. [0003] Traditional PVB interlayers have poor tear strength and rigidity, making it difficult to withstand heavier loads and stronger impacts. Solutia chemically modifies the PVB resin, and through the interaction of ionic groups in the molecule, the PVB membrane product obtains higher mechanical properties. In addition, Solutia also designed a PVB film with a multilayer structure (Saflex DG). Compared to conventional PVB (approximately 20-26MPa), the Saflex DG ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C27/12C08J5/18C08L29/14C08K5/09C08K5/13B32B17/10B32B27/06B32B27/30
CPCC03C27/10C08J5/18B32B27/306B32B27/06B32B17/10036C08J2329/14C08K5/09C08K5/13
Inventor 赵悦悦吴嘉名冯加晔于涌谭诗圻严册
Owner 怀德创建有限公司
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