Environmentally-friendly recycled paper and preparation method thereof

A recycled paper, environmentally friendly technology, applied in the field of paper manufacturing, can solve the problems of high formaldehyde content and poor waterproof ability of waste paper, and achieve the effect of improving whiteness, improving bonding degree and reducing surface tension

Inactive Publication Date: 2019-02-01
江门市长兴纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an environmentally friendly recycled paper and

Method used

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  • Environmentally-friendly recycled paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] The preparation method of deinking active agent is:

[0029] Take alkylphenol polyoxyethylene ether and add isophor diisocyanate according to the mass ratio of 2~5:3~6, heat to 60~65℃, stir and mix for 30~40min, then add 5~10% isophor diisocyanate dropwise Add dibutyltin dilaurate for 20~30min to obtain a mixture, add acetone to the mixture at a mass ratio of 20~30: 2~5, stir and mix at 60~65℃ for 1~3h, get a stirred mixture, take the mixture Add tartaric acid in a mass ratio of 10~15:3~6, heat up to 100~105℃, stir and mix for 3~5h, cool to room temperature, to obtain deinking active agent.

[0030] The preparation method of waste paper removing formaldehyde additive is:

[0031] (1) Take ethyl acetoacetate and add potassium carbonate and absolute ethanol at a mass ratio of 15-20:1~3:40~50, heat up to 80~90℃, stir and mix for 30~40min, add ethyl acetoacetate mass 50~ 60% of the hydroxyl-terminated hyperbranched polyester, then heat to 110~120℃, stir and mix for 2~4h, rotary ...

Example Embodiment

[0042] Example 1

[0043] The preparation method of deinking active agent is:

[0044] Take the alkylphenol polyoxyethylene ether and add isophor diisocyanate in a mass ratio of 2:3, heat to 60°C and stir and mix for 30 minutes, and then add 5% isophor diisocyanate mass dibutyl tin dilaurate to control the dropping time 20min, the mixture is obtained, the mixture is added with acetone at a mass ratio of 20:2, and the mixture is stirred and mixed for 1 hour at 60°C to obtain a stirred mixture. The mixture is stirred and mixed with tartaric acid at a mass ratio of 10:3, heated to 100°C, stirred and mixed for 3 hours, and cooled to room temperature , Get deinking active agent.

[0045] The preparation method of waste paper removing formaldehyde additive is:

[0046] (1) Take ethyl acetoacetate and add potassium carbonate and absolute ethanol at a mass ratio of 15:1:40. The temperature is raised to 80°C and mixed for 30 minutes. Add 50% of the mass of ethyl acetoacetate and the hydroxyl-...

Example Embodiment

[0057] Example 2

[0058] The preparation method of deinking active agent is:

[0059] Take alkylphenol polyoxyethylene ether and add isophor diisocyanate according to the mass ratio of 5:6, heat to 65°C and stir and mix for 40 minutes, then add 10% isophor diisocyanate mass of dibutyl tin dilaurate to control the dropping time 30min, the mixture is obtained, the mixture is added with acetone at a mass ratio of 30:5, and the mixture is stirred and mixed for 3 hours at 65°C to obtain a stirred mixture. The mixture is stirred and mixed with tartaric acid at a mass ratio of 15:6. The temperature is raised to 105°C and the mixture is stirred and mixed for 5 hours. Cool to room temperature , Get deinking active agent.

[0060] The preparation method of waste paper removing formaldehyde additive is:

[0061] (1) Take ethyl acetoacetate and add potassium carbonate and absolute ethanol at a mass ratio of 20:3:50. The temperature is increased to 90°C and mixed for 40 minutes. The hydroxyl-ter...

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Abstract

The invention relates to an environmentally-friendly recycled paper and a preparation method thereof, which belong to the technical field of paper making. The method uses waste paper as a raw materialto synthesize two hydrophilic group surfactants, the surface tension is reduced, and steps of penetration, emulsification and dispersion are carried out on an ink, thereby removing, the whiteness ofthe waste paper is improved, and the recycled paper can be re-printed and reused; an active methylene hyperbranched waste paper formaldehyde-removal additive is prepared by taking ethyl acetoacetate and hydroxyl terminated hyperbranched polyester as raw materials, so that the formaldehyde can be captured and removed; dicyandiamide and hexanediamine dihydrochloride are taken as raw materials, ciprofloxacin is added for clathration as an antibacterial agent, the irritation is reduced, the utilization is increased and the action time is prolonged, the antibacterial property of recycled paper is increased, and mildew can be prevented; a silica sol is used as a raw material, and by compounding with calcium carbonate and bentonite, the mechanical properties of recycled paper and the tear resistance can be improved. The environmentally-friendly recycled paper solves the problems of high formaldehyde content and poor water resistance of waste paper at present.

Description

technical field [0001] The invention relates to an environment-friendly regenerated paper and a preparation method thereof, belonging to the technical field of paper manufacturing. Background technique [0002] At present, after more than 200 years of development in my country's modern paper industry, the use of wood raw materials has accounted for more than 90% of various plant fiber raw materials, and now the global forest area is much smaller than that of 200 years ago. The regeneration cycle of forest resources is long, and other natural plant fiber materials have huge reserves on the earth, and are known as highly sustainable materials. The high-value comprehensive utilization of such materials has become one of the research hotspots of domestic and foreign researchers. one. With the rapid growth of online shopping and express delivery, the demand for carton packaging is increasing day by day. However, the widespread use of packaging cartons also brings unreasonable al...

Claims

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Application Information

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IPC IPC(8): D21C5/02D21H21/36D21H21/06D21H11/14D21H21/14D21H17/67D21H17/68C09D9/04C09D9/00
CPCC09D9/005C09D9/04D21C5/027D21H11/14D21H17/675D21H17/68D21H21/06D21H21/14D21H21/36Y02W30/64
Inventor 赵建平路芸卢星
Owner 江门市长兴纸业有限公司
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