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A kind of PVB intermediate film of infrared cutoff and preparation method

An interlayer, ultraviolet technology, applied in the field of polymer and nanoparticle composite materials, can solve problems such as shortage and gap supply, and achieve the effects of improved transparency, reduced number of spherulites, and high bonding strength

Active Publication Date: 2020-09-08
天台县百赞塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] With the rapid development of my country's construction industry and automobile industry, glass curtain walls are widely used in large buildings. At present, the domestic demand for PVB interlayer film for heat-insulating safety glass is increasing day by day. However, due to the gap in technology and equipment, the domestic market Insufficient supply of

Method used

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  • A kind of PVB intermediate film of infrared cutoff and preparation method
  • A kind of PVB intermediate film of infrared cutoff and preparation method
  • A kind of PVB intermediate film of infrared cutoff and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of embodiment 1PVB interlayer film

[0032] 1. Weigh each component by weight and set aside;

[0033] 2. Preparation of nano-scale heat-insulating particle slurry: add metal oxides to distilled water, seal and sonicate for 8-9 minutes to form a pre-dispersion; then put the pre-dispersion on a nano-sand mill for 2-3 hours, Heat-insulating particles with a particle size of ≤25nm are prepared for use; the metal oxide is a mixture of GTO and ATO, and the weight ratio of GTO and ATO is 3:1;

[0034] 2. Coarse material preparation: dissolve the organic ultraviolet absorber and antioxidant in the plasticizer to form a mixed solution, and add modification additives to the mixed solution; then put it into a twin-screw extruder, and then use a metering pump The nano-scale heat-insulating particle slurry prepared in step 2 is directly injected into the barrel of the extruder, extruded and mixed with PVB resin powder evenly, and the excess water vapor is suc...

Embodiment 2

[0038] PVB resin powder 100Kg, dialkyl oxalate 25Kg, dioctadecyl alcohol pentaerythiphosphite 0.3Kg, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl) - 0.6Kg of 5-chlorobenzotriazole, 0.8Kg of nano-scale thermal insulation particle slurry, and 1.5Kg of citric acid, wherein the number average molecular weight of the PVB resin powder is 150,000. The nano-scale heat-insulating particle slurry is a mixture of GTO nano-powder and ATO nano-powder dispersed in a dispersant, the weight ratio of the nano-scale heat-insulating particle to the dispersant is 1:2, and the GTO nano-powder The weight ratio to ATO nanopowder is 3:1, the particle size is ≤25nm, and the dispersant is distilled water.

Embodiment 3

[0040] PVB resin powder 100Kg, dialkyl oxalate 25Kg, dioctadecyl alcohol pentaerythiphosphite 0.3Kg, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl) - 0.6Kg of 5-chlorobenzotriazole, 0.8Kg of nanoscale thermal insulation particle slurry, wherein the number average molecular weight of the PVB resin powder is 150,000. The nano-scale heat-insulating particle slurry is a mixture of GTO nano-powder and ATO nano-powder dispersed in a dispersant, the weight ratio of the nano-scale heat-insulating particle to the dispersant is: 1:2, the GTO nano The weight ratio of the powder to the ATO nano powder is 3:1, the particle size is ≤25nm, and the dispersant is distilled water.

[0041] Perform performance testing on the PVB interlayer of Example 2-3, according to national standards GB / T2680-1994, GB / T6627-200, GB / T1040.3-2006, GB / T2410-2008, etc., and routine detection of PVB in this field The method of interlayer film is tested, and test result is as shown in table 1:

[0042] Table 1:

[004...

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Abstract

The invention provides an infrared partition type PVB intermediate film and a preparation method, belonging to the fields of polymers and nano-particle composite materials. The PVB intermediate film contains the following raw materials in parts by weight: 80-120 parts of PVB resin powder, 15-35 parts of a plasticizer, 0.1-0.6 part of an antioxidant, 0.05-1 part of an ultraviolet light absorber, 0.1-1 part of nano-scale thermal insulation micro-particle slurry and 0.5-2 parts of a modifying aid, wherein the number-average molecular weight of the PVB resin powder is 120000-250000. By utilizing the PVB resin with a proper number-average molecular weight and utilizing citric acid as the modifying aid, the prepared PVB intermediate film has excellent performance parameters and the characteristics of good thermal insulation effect, high strength, excellent ageing resistance, high bonding strength and the like and can be widely applied to various fields.

Description

technical field [0001] The invention belongs to the field of composite materials of polymers and nanoparticles, and relates to an infrared-blocking PVB intermediate film. Background technique [0002] Polyvinyl butyral resin, white or yellowish solid particles or powder, a synthetic resin formed by the condensation reaction of polyvinyl alcohol and n-butyraldehyde with acid as a catalyst, in which polyvinyl acetate is hydrolyzed or alcoholysis. Since the above two reactions cannot be carried out completely, the resin must contain three functional groups: the hydroxyl group and the remaining acetate group produced during the hydrolysis or alcoholysis of polyvinyl acetate, the butylic acid group generated by the acetal reaction, and each functional group Randomly distributed on the molecular chain, the relative proportion of each functional group can be controlled by the reaction conditions, thereby changing various properties of the resin. [0003] The PVB interlayer film i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/14C08K13/02C08K5/524C08K5/11C08K3/22C08K5/3475C08J5/18
CPCC08J5/18C08J2329/14C08K3/22C08K5/11C08K5/524C08K13/02C08K2201/011
Inventor 杨天赞许嘉罗红强郑岳义
Owner 天台县百赞塑胶有限公司
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