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Water-resistant and high-temperature-resistant modified polyvinylalcohol

A technology of polyvinyl alcohol and water-resistant modifier, applied in the field of modified polyvinyl alcohol, can solve the problem of inability to reduce strong water absorption, and achieve the effect of low cost

Inactive Publication Date: 2015-04-29
NANNING JINZHUANG PLASTIC COLOR PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified polyvinyl alcohol currently on the market still cannot reduce the strong water absorption due to the presence of the 3 / OH gene group on the PVA main chain.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 2% succinic anhydride, 45% sorbitan, and 53% polyethylene glycol and mix to form instant surface active agent for subsequent use.

[0019] Taking g as the unit, weigh the following component raw materials: 11g of polyvinyl alcohol, 1g of nano-calcium carbonate, 3g of hydrochloric acid with a mass concentration of 17%, 6g of the surfactant prepared above, 0.5g of water-resistant modifier molybdenum trioxide, methanol 1g, cross-linking agent borax 1.5g, deionized water 100g. Pour deionized water into a beaker with a capacity of 250ml at room temperature, then pour polyvinyl alcohol and stir to mix evenly, then add methanol and continue to stir and mix, continue to stir, then add nanometer calcium carbonate, hydrochloric acid, surfactant, borax , mix evenly, add molybdenum trioxide after 5 minutes, stir and mix to obtain modified polyvinyl alcohol.

Embodiment 2

[0021] Get 4% succinic anhydride, 45% sorbitan, and 51% polyethylene glycol and mix to form an instant surface active agent for subsequent use.

[0022] Taking g as the unit, take the following component raw materials: polyvinyl alcohol 6g, nanometer calcium carbonate 0.5g, mass concentration is 17% hydrochloric acid 2g, the above-mentioned prepared surfactant 4g, water resistance modifier molybdenum trioxide 0.2g, 0.5 g of ethanol, 0.5 g of crosslinking agent borax, and 75 g of distilled water. Pour distilled water into a beaker with a capacity of 250ml at room temperature, then pour polyvinyl alcohol and stir to mix evenly, then add ethanol and continue to stir and mix, continue to stir, then add nano-calcium carbonate, hydrochloric acid, surfactant, borax, and mix After 5 minutes, add molybdenum trioxide, stir and mix to obtain modified polyvinyl alcohol.

Embodiment 3

[0024] Get 3% succinic anhydride, 45% sorbitan, and 52% polyethylene glycol and mix to form an instant surface active agent for subsequent use.

[0025] Taking g as the unit, take the following component raw materials: polyvinyl alcohol 8g, nano calcium carbonate 0.8g, mass concentration is 17% hydrochloric acid 3g, the above-mentioned prepared surfactant 5g, water-resistant modifier molybdenum trioxide 0.3g, 0.7 g of ethanol, 1.0 g of crosslinking agent borax, and 85 g of purified water. Pour purified water into a beaker with a capacity of 250ml at room temperature, then pour polyvinyl alcohol and stir to mix evenly, then add ethanol and continue to stir and mix, continue to stir, then add nano-calcium carbonate, hydrochloric acid, surfactant, borax, Mix evenly, add molybdenum trioxide after 5 minutes, stir and mix to obtain modified polyvinyl alcohol.

[0026] In the present invention, by adding molybdenum trioxide, the 3 / OH contained in polyvinyl alcohol can be improved to...

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PUM

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Abstract

The invention relates to water-resistant and high-temperature-resistant modified polyvinylalcohol. The water-resistant and high-temperature-resistant modified polyvinylalcohol comprises the following raw materials in parts by weight: 6-11 parts of polyvinylalcohol, 0.5-1 part of nano calcium carbonate, 2-3 parts of a catalyst, 4-6 parts of a surfactant, 0.2-0.5 part of a water-resistant modifying agent, 0.5-1 part of a conditioning agent, 0.5-1.5 parts of a cross-linking agent and 75-100 parts of water. According to the water-resistant and high-temperature-resistant modified polyvinylalcohol, by adding molybdenum trioxide, the property of strong water-absorbing capacity of 3 / OH in the polyvinylalcohol can be improved, and the modified polyvinylalcohol has the properties of water resistance and high-temperature resistance; and furthermore, the required raw materials are common and easily available, so that the cost is relatively low.

Description

technical field [0001] The invention relates to a modified polyvinyl alcohol, in particular to a modified polyvinyl alcohol resistant to water and high temperature. Background technique [0002] Polyvinyl alcohol (PVA) is a water-soluble polymer material, which is a water-soluble polymer with excellent performance and wide application. Its main chain contains a large number of hydroxyl groups, and its structural formula is (-CH 2 CHOH-)n. Due to the small volume of the side groups 3 / H and 3 / OH, they can enter the crystallization point without causing stress, so they have a high degree of crystallinity, which makes the gas permeability of PVA very small. The film prepared from it has excellent oxygen resistance, oil resistance, abrasion resistance, tear resistance, transparency, antistatic property, printability, chemical corrosion resistance, etc., and is biodegradable under certain conditions , occupies a unique and very important position in thin film materials. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K13/02C08K3/26C08K3/22C08K5/05C08K3/38
Inventor 刘桂荣
Owner NANNING JINZHUANG PLASTIC COLOR PRINTING