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Method for producing ring pressure reinforcing agent for cardboard containing styrene-acrylic polymer by using konjac flying powder

A technology of styrene-acrylic polymer and konjac fly powder is applied in directions such as adding enhancer, can solve problems such as environmental pollution by konjac fly powder, and achieves the effects of low industrial production cost, low free monomer content, and prolonged storage period

Inactive Publication Date: 2016-04-27
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is aimed at above-mentioned present situation, aims to provide a kind of can solve the problem that a large amount of konjac fly powder pollutes the environment, improve the comprehensive development and utilization value of konjac, process operation is simple, product quality is stable, suitable for industrialized production using konjac fly Method for powder production containing styrene-acrylic polymer cardboard ring pressure strengthening agent

Method used

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  • Method for producing ring pressure reinforcing agent for cardboard containing styrene-acrylic polymer by using konjac flying powder
  • Method for producing ring pressure reinforcing agent for cardboard containing styrene-acrylic polymer by using konjac flying powder
  • Method for producing ring pressure reinforcing agent for cardboard containing styrene-acrylic polymer by using konjac flying powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 500Kg of water, 164Kg of konjac powder, and 1.64Kg of amylase into a 1000L enamel reaction kettle, heat and stir, the material will gradually become clear from white turbid liquid, and when the color of the solution no longer changes, keep it warm for 1 hour. Then add 1.2kg of ferrous sulfate, 25kg of 30% hydrogen peroxide solution, and adjust the pH to 4.5 with industrial hydrochloric acid. Carry out the oxidation reaction at 50-60°C for 2 hours, cool down and separate the precipitate, and obtain a clear solution of oxidized starch with a concentration of 20%.

[0025] Add dropwise 46Kg of styrene, 83Kg of butyl acrylate, and 6Kg of the third monomer acrylic acid into the above-mentioned oxidized starch clear liquid, and simultaneously add 100Kg of 6% hydrogen peroxide solution dropwise with a peristaltic pump. Incubate at 85°C for 4 hours. The rosin emulsion of 92Kg content 50% is added in the styrene-acrylic emulsion again, obtains the white styrene-acrylic cardb...

Embodiment 2

[0027] Same as Example 1, the difference is that trimethylaminoethyl acrylate hydrochloride, hydroxyethyl acrylate, N-vinyl formamide, vinyl acetate, glycidyl methacrylate are used to replace acrylic acid, and styrene, acrylic acid Butyl ester and hydrogen peroxide were grafted and copolymerized at 85°C to produce a styrene-acrylic polymer cardboard ring pressure enhancer with a concentration of 30%.

[0028] Use 100 grams of Mulan corrugated base paper to test the performance of the ring pressure enhancer. The ring pressure index after drying, the ring pressure index after moisture return, and the absorption performance test results are shown in Table 1 as follows:

[0029] Table 1

[0030]

[0031]

Embodiment 3

[0033] Add 450Kg of water, 121Kg of konjac fly powder, 0.6Kg of amylase into a 1000L enamel reaction kettle, heat and stir, the material gradually becomes clear from white turbid liquid, and when the color of the solution does not change, keep it warm for 1 hour. Then add 0.8Kg of ferrous sulfate, 25kg of 30% hydrogen peroxide solution, and adjust the pH to 4.5 with industrial hydrochloric acid. Carry out the oxidation reaction at 50-60°C for 2 hours, cool down and separate the precipitate, and obtain a 20% oxidized starch clear liquid.

[0034] Add dropwise 40Kg of styrene, 72Kg of butyl acrylate, and 8Kg of the third monomer hydroxyethyl acrylate into the above-mentioned oxidation clear liquid, and simultaneously add 100Kg of 6% hydrogen peroxide solution dropwise with a peristaltic pump. After the dropwise addition, keep warm for 4 hours. The paraffin oil of 164Kg is joined in the styrene-acrylic latex again, obtains the styrene-acrylic polymer cardboard ring pressure stren...

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Abstract

The invention relates to a method for producing a paperboard ring crush reinforcing agent with a benzenepropyl polymer from konjac flying powder. The method comprises the following steps: adding water into konjac flying powder, adding amylase, heating, stirring, preserving heat for enzymolysis for 1 hour when the material is changed into a clarification liquid from a white turbid liquid, adding ferrous sulfate and 30% hydrogen peroxide, adjusting the pH value to be 4.5, oxidizing for 2 hours at 50-60 DEG C, cooling down to separate the precipitate to obtain a clear oxidized starch liquid, dropping styrene, butyl acrylate and a third monomer, dropping a 6% hydrogen peroxide solution by using a peristaltic pump, preserving heat for 4 hours at 85 DEG C to perform graft copolymerization so as to obtain benzenepropyl polymer latex, and adding an aging accelerant, thereby obtaining the paperboard ring crush reinforcing agent which contains 30% of solid and contains the benzenepropyl polymer. The property detection on the reinforcing agent of 100g of raw corrugated paper through lily magnolia shows that the ring crush index of dried paper is 9.4N.m / g, the ring crush index of rewetted paper is 3.2N.m / g, the absorption property is 36.1g / m<2>. The method is simple in process, low in cost, stable in product quality and long in storage life.

Description

technical field [0001] The invention adopts the by-products in the production process of konjac fine powder as raw materials, and utilizes the konjac flying powder as a resource to produce a method for producing a cardboard ring pressure enhancer containing styrene-acrylic polymer. Background technique [0002] Konjac flying powder is a light-weight, small-grained powder produced during the processing of konjac fine powder, which accounts for 30% to 40% of the fine powder. It is generally regarded as waste and sold as low-priced feed or desiccant, with low utilization value. According to statistics, only about 85% (80,000 tons) of konjac flying powder is not used in Hubei Province every year, but also pollutes the environment. Reuse of konjac powder helps to reduce waste of resources and minimize environmental pollution. [0003] In order to make full use of konjac powder, some use konjac powder to prepare soil water retaining agent (CN1184279C). In the presence of a free ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00C08F212/08C08F220/16C08F220/06C08F220/34C08F220/28C08F220/32C08F218/08C08F226/02C08B31/18D21H21/18
Inventor 徐保明袁世炬彭国启陈坤唐强王百顺张小元付开乔朱星宇
Owner HUBEI UNIV OF TECH