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A kind of polyvinyl butyral with sound insulation performance and preparation method thereof

A technology of polyvinyl butyral and polyvinyl alcohol, which is applied in the field of polyvinyl butyral and its preparation, can solve the problems of decreased mechanical properties of films, decreased aging resistance, complicated preparation process, etc., and achieves excellent compatibility Good stability, uniform thickness, and good transparency

Active Publication Date: 2022-07-01
忠信(清远)光伏材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this invention is complicated, which will lead to increased cost and waste of resources
[0009] In addition, increasing the plasticizer ratio to adjust the mechanical factors of different PVB film layers will have the following risks: the mechanical properties of the film will decrease, the aging resistance will decrease, and the plasticizer will precipitate out, etc.

Method used

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  • A kind of polyvinyl butyral with sound insulation performance and preparation method thereof
  • A kind of polyvinyl butyral with sound insulation performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Proceed as follows:

[0052] (1) PVA dissolution: Mix 3.6kg of 0888PVA (0888 indicates a degree of polymerization of 800, and an alcoholysis degree of 88%) and 26.4kg of 2688PVA (2688 indicates a degree of polymerization of 2600 and an alcoholysis degree of 88%) in pure water and soaked in pure water for 30 minutes and then heated to 90 ℃, dissolve for 1.5 hours, and keep warm for 2 hours after dissolving to prepare a 11% PVA solution.

[0053] (2) Cooling and adding sodium dodecyl sulfonate and hydrochloric acid: When cooling the PVA solution system to 12° C., add 0.18 kg sodium dodecyl sulfonate and 4 kg 30% hydrochloric acid.

[0054] (3) Add n-butyraldehyde: when the temperature drops to 10°C, add 18kg n-butyraldehyde within 6 minutes.

[0055] (4) Low temperature heat preservation: after adding n-butyraldehyde reaction, after phase change, heat preservation for 1 hour.

[0056] (5) Start to heat up: start to heat up after 1 hour of low temperature heat preservati...

Embodiment 2

[0061] Example 2 uses 3 kinds of PVA mix

[0062] Proceed as follows:

[0063] (1) Dissolving PVA: Mix 2.4kg 0888PVA, 3.6kg2088PVA (2088 means polymerization degree 2000, alcoholysis degree 88%), 24kg 2688PVA and soak in pure water for 30min, then heat up to 90°C, dissolve for 1.5 hours, and after dissolving Incubate for 2 hours to prepare an 11% PVA solution.

[0064] (2) Cooling and adding sodium dodecyl sulfonate and hydrochloric acid: When cooling the PVA solution system to 12° C., add 0.18 kg sodium dodecyl sulfonate and 4 kg 30% hydrochloric acid.

[0065] (3) Add n-butyraldehyde: when the temperature drops to 10°C, add 18kg n-butyraldehyde within 6 minutes.

[0066] (4) Low temperature heat preservation: after adding n-butyraldehyde reaction, after phase change, heat preservation for 1 hour.

[0067] (5) Start to heat up: start to heat up after 1 hour of low temperature heat preservation, and heat up to 68° C. in 2.5 hours.

[0068] (6) High temperature heat preserv...

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Abstract

The invention relates to the technical field of polymer material preparation, in particular to a polyvinyl butyral with sound insulation properties and a preparation method thereof. The polyvinyl butyral, in parts by weight, includes the following raw materials: 30-35 parts of polyvinyl alcohol, 16-19 parts of n-butyraldehyde, 4-6 parts of catalysts and 0.18-0.3 parts of surfactants. The polyvinyl alcohol is a mixture of a high degree of polymerization polyvinyl alcohol and a low degree of polymerization polyvinyl alcohol, the degree of polymerization of the polyvinyl alcohol with a high degree of polymerization is 2000-2600, and the degree of polymerization of the low degree of polymerization polyvinyl alcohol is 500- 800. The present invention has the advantages of low hydroxyl content, excellent sound insulation effect and optical properties.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a polyvinyl butyral with sound insulation properties and a preparation method thereof. Background technique [0002] Polyvinyl Butyral (PVB for short) is the condensation product of polyvinyl alcohol and butyraldehyde under acid catalysis. Because the PVB molecule contains long branched chains, it has good flexibility, low glass transition temperature, and high tensile strength and impact strength. PVB has excellent transparency, good solubility, good light resistance, water resistance, heat resistance, cold resistance and film-forming properties. The functional groups it contains can carry out various reactions such as saponification of ethyl phthalate, esterification of hydroxyl groups, sulfonation, etc., and it has high adhesion to glass, metal (especially aluminum) and other materials. Therefore, it has been widely used in the manufacture of laminated s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/28C08F16/06
CPCC08F8/28C08F16/06
Inventor 不公告发明人
Owner 忠信(清远)光伏材料科技有限公司