Low-water-absorption PVB intermediate film and preparation process thereof

A technology with low water absorption rate and preparation process, applied in the field of PVB interlayer film preparation, can solve the problems of low raw material adhesion in the film, affecting the service life, low tensile strength, etc. The effect of low water absorption

Pending Publication Date: 2022-04-12
ZHEJIANG DECENT PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current PVB film does not add low water absorption materials. When in use, the water absorption rate is high, which affects the service life, and the adhesion of the raw materials in the film is low, resulting in low tensile strength and poor mechanical properties of the film. Therefore, A new type of low water absorption PVB interlayer film is needed to solve these problems

Method used

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  • Low-water-absorption PVB intermediate film and preparation process thereof
  • Low-water-absorption PVB intermediate film and preparation process thereof
  • Low-water-absorption PVB intermediate film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The PVB intermediate film with low water absorption rate comprises the following raw materials in parts by weight:

[0029]

[0030] In this embodiment, the PA12 is prepared by mixing butanol, acetone, methyl acetate, ethyl acetate, and butyl acetate in a weight ratio of 2:2:1:1.

[0031] In this embodiment, the dispersant is a polyester hyperdispersant, and the leveling agent is prepared by mixing polyether polyester modified organosiloxane and polydimethylsiloxane in a weight ratio of 1.5:1 .

[0032] In the present embodiment, the antioxidant is antioxidant 1790, and the plasticizer consists of phthalate, dibutyl phthalate and diethyl phthalate in a weight ratio of 1:1.5 : 1 mixed prepared.

[0033] In this embodiment, the ultraviolet absorber is UV-P.

[0034] The low water absorption PVB interlayer film preparation process specifically includes the following steps:

[0035] S101. Put PVB resin and PA12 in parts by weight into a mixing container, and stir eve...

Embodiment 2

[0043] The PVB intermediate film with low water absorption rate comprises the following raw materials in parts by weight:

[0044]

[0045]

[0046] In this embodiment, the PA12 is prepared by mixing butanol, acetone, methyl acetate, ethyl acetate, and butyl acetate in a weight ratio of 2:2:1:1.

[0047] In this embodiment, the dispersant is a polyester hyperdispersant, and the leveling agent is prepared by mixing polyether polyester modified organosiloxane and polydimethylsiloxane in a weight ratio of 1.5:1 .

[0048] In the present embodiment, the antioxidant is antioxidant 1790, and the plasticizer consists of phthalate, dibutyl phthalate and diethyl phthalate in a weight ratio of 1:1.5 : 1 mixed prepared.

[0049] In this embodiment, the ultraviolet absorber is UV-P.

[0050] The low water absorption PVB interlayer film preparation process specifically includes the following steps:

[0051] S101. Put PVB resin and PA12 in parts by weight into a mixing container, ...

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Abstract

The invention discloses a low-water-absorption PVB (polyvinyl butyral) intermediate film and a preparation process thereof. The low-water-absorption PVB intermediate film comprises the following raw materials in parts by weight: 180-210 parts of PVB resin; 80 to 120 parts of PA12 (polyamide 12); 15-20 parts of a dispersant; 12-15 parts of a leveling agent; 10 to 12 parts of a silane coupling agent; 8-10 parts of an antioxidant; 12-15 parts of a plasticizer; 9-11 parts of an ultraviolet light absorber; 7-9 parts of an epoxy curing agent; the ultraviolet light absorber is added into the low-water-absorption PVB intermediate film, so that the anti-ultraviolet intensity of the low-water-absorption PVB intermediate film can be greatly improved, and meanwhile, the silane coupling agent and the epoxy curing agent are synchronously added, so that the bonding performance among the raw materials for preparing the intermediate film can be greatly improved, the strength, electrical property, water resistance, weather resistance and the like of the intermediate film are improved, and the service life of the intermediate film is prolonged. Meanwhile, the mechanical performance of the middle film is improved, the overall waterproof performance of the outer wall is further improved, the water absorption capacity of the middle film can be greatly reduced through PA12, the middle film has the good low water absorption rate, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of PVB intermediate film preparation, in particular to a low water absorption PVB intermediate film and a preparation process thereof. Background technique [0002] Polyvinyl butyral (PVB) is a condensation product of polyvinyl alcohol and butyraldehyde. The main application field of PVB in China is as an interlayer film and used in laminated glass. The PVB interlayer film is made of polyvinyl butyral resin by adding It is a kind of polymer material formed by plasticizing and extruding. It not only looks like a translucent film, but also has no impurities, smooth surface, certain roughness and good flexibility, and has good adhesion to inorganic glass. , has the characteristics of transparency, heat resistance, cold resistance, moisture resistance, high mechanical strength, etc. It is the best adhesive material for making interlayer and safety glass in the world at present. Steelmaking furnace screens and v...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L29/14C08L77/02C08K3/22C08K5/3475C08J5/18
Inventor谢怀玉李雪纯梁俊雅
OwnerZHEJIANG DECENT PLASTIC