Preparation method of foam board with uniform plasmids

A foam board, uniform technology, applied in the field of foam board, can solve the problems of high fragility and breakage rate of packaging board, breakage and damage of packaging board, collision or accidental drop, etc., to improve fragility and damage rate, Effect of improving lubricity and promoting dispersion

Pending Publication Date: 2022-05-27
慈溪市赞恩包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the actual use of the packaging board, the inventor found that when the above-mentioned foam board is used as a packaging buffer board for the product, the packaging board is very prone to breakage and In the case of breakage, the fragility and breakage rate of the packaging board is high, resulting in damage to the protected product

Method used

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  • Preparation method of foam board with uniform plasmids
  • Preparation method of foam board with uniform plasmids

Examples

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Effect test

preparation example 1

[0041] The preparation of magnesium hydroxide composite agglomerated particles comprises the following steps:

[0042]Step 1, adding 3kg of nano-silicon dioxide powder and 2kg of nano-titanium dioxide powder to 20kg magnesium nitrate solution to disperse uniformly, the mass concentration of magnesium nitrate solution is 20%, obtain a mixed solution, add ammonia water to the mixed solution, adjust the pH value to 11 , to prepare coated particles with nano-silica powder and nano-titanium dioxide powder as the core, filter and dry them to obtain a solid product;

[0043] In step 2, 1 kg of mica powder and 4 kg of polyethylene glycol are added to the solid product, and spray granulation is carried out to obtain magnesium hydroxide composite agglomerated particles with a particle size of less than 0.1 mm.

preparation example 2

[0045] The preparation of magnesium hydroxide composite agglomerated particles comprises the following steps:

[0046] Step 1, in 20kg magnesium nitrate solution, add nano silicon dioxide powder 5kg and nano titanium dioxide powder 4kg to disperse uniformly, the mass concentration of magnesium nitrate solution is 20%, obtain mixed solution, add ammonia water to mixed solution, adjust pH value to 8 , to prepare coated particles with nano-silica powder and nano-titanium dioxide powder as the core, filter and dry them to obtain a solid product;

[0047] In step 2, 3 kg of mica powder and 9 kg of polyethylene glycol are added to the solid product, and spray granulation is carried out to obtain magnesium hydroxide composite agglomerated particles with a particle size of less than 0.1 mm.

preparation example 3

[0049] The preparation of magnesium hydroxide composite agglomerated particles comprises the following steps:

[0050] Step 1, adding 4.2 kg of nano-silicon dioxide powder and 2.8 kg of nano-titania powder to the 20kg magnesium nitrate solution to disperse uniformly, the mass concentration of the magnesium nitrate solution is 20%, to obtain a mixed solution, add ammonia water to the mixed solution, and adjust the pH value To 9, the coated particles with nano-silicon dioxide powder and nano-titanium dioxide powder as inner cores are prepared, filtered and dried to obtain a solid product;

[0051] In step 2, 2.3 kg of mica powder and 7.9 kg of polyethylene glycol are added to the solid product, and spray granulation is carried out to obtain magnesium hydroxide composite agglomerated particles with a particle size of less than 0.1 mm.

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Abstract

The invention relates to the field of foam boards, and particularly discloses a preparation method of a foam board with uniform plasmids, which comprises the following steps: step 1, melting polyethylene resin, adding magnesium hydroxide composite agglomerated particles, and then extruding and granulating to obtain modified polyethylene particles; step 2, mixing and homogenizing the modified polyethylene particles prepared in the step 1 with a silane coupling agent, a foaming agent and a binder, and under circulation purging of nitrogen, adopting a vacuum heating mode and a positive pressure heating mode to circularly and alternately react for foaming to obtain a dry composite material; the foaming agent comprises tetrahydrofurfuryl alcohol, sodium dioctyl sulfosuccinate and sodium bicarbonate; and step 3, adding dimethylsilylated silica into the composite material, performing maintenance, and then performing curing molding to obtain the foam board. By adopting the preparation method provided by the invention, the fragile rate and breakage rate of the packaging plate after collision or falling in the transportation process can be effectively reduced, and the comprehensive performance of the foam plate is good.

Description

technical field [0001] The present application relates to the field of foam boards, and more particularly, to a method for preparing a foam board with uniform particles. Background technique [0002] At present, in the process of logistics packaging and transportation, polyethylene foam board is often used as a packaging buffer board to ensure the integrity of the transported products. [0003] For example, the patent application with the publication number CN109233047A discloses a polyethylene closed-cell foam board. The carbon black, graphene oxide, and humic acid are mixed and ball-milled to obtain ball abrasives. Glutaraldehyde, continue ball milling, carbonization, and pulverization to obtain modified filler; mix low-density polyethylene and cross-linking agent, then add silicone resin, chloroplatinic acid, modified filler, zinc stearate and The modified sepiolite is kneaded, then azodicarbonamide and vulcanizing agent are added for kneading, then mirabilite and ethyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/14C08J9/04C08J9/08C08L23/06C08L29/04C08L3/02C08L71/02C08K3/22C08K9/10C08K9/06C08K3/34C08K5/54C08K13/06
CPCC08J9/142C08J9/04C08J9/08C08J9/0061C08J9/0066C08J9/0071C08J9/009C08J9/0042C08J9/0095C08J2323/06C08J2403/02C08J2429/04C08J2471/02C08J2203/02C08J2203/12C08K2201/011
Inventor 王杰辉
Owner 慈溪市赞恩包装科技有限公司
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