A fiber-based microporous structure and its preparation method

A structure, fiber-based technology, applied in the field of fiber-based microporous structure and its preparation, can solve the problems of natural environment and biological hazards, and achieve the effect of low density

Active Publication Date: 2022-01-18
天津茂创科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the express delivery industry, the use of packaging fillers continues to grow. At present, the market is still dominated by plastic fillers, which are flexible and convenient to operate, have a wide range of applications and are low in price. However, if plastics cannot be recycled well , exposed to the natural environment, will cause serious harm to the natural environment and organisms

Method used

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  • A fiber-based microporous structure and its preparation method
  • A fiber-based microporous structure and its preparation method
  • A fiber-based microporous structure and its preparation method

Examples

Experimental program
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preparation example Construction

[0047] Concrete preparation steps are:

[0048] 1) Mix the adhesive and water together according to the above ratio, use heating, preferably in a water bath, the temperature of the water bath is 65°C-95°C, stir continuously until the adhesive is completely dissolved, take it out and stand it at ambient temperature for later use, ambient temperature 23 ±2°C.

[0049] 2) Heat and pre-expand the heat-expandable particles to about 30%-70% of the optimal expansion size. According to the expansion temperature of the microspheres, you can choose water bath heating expansion, oven heating expansion, hot steam expansion or extruder heating expansion.

[0050] Among them, the heat-expandable particles are also called Yangbuck powder, expansion agent, and microcapsule foaming agent. They are tiny spherical particles. The particles are composed of a polymer shell and the gas wrapped in it. , the thermoplastic shell softens, the gas inside the shell expands, and the particle volume change...

Embodiment 1

[0057] A fiber-based microporous structure, the preparation method steps are as follows:

[0058] (1) Mix 6 parts of polyvinyl alcohol and 20 parts of water together, heat in a water bath at a temperature of 85°C, stir continuously until the polyvinyl alcohol is completely dissolved, take it out and place it at ambient temperature for 30 minutes for later use.

[0059] (2) Take 0.5 parts of heat-expandable particles and put them in a water bath environment for pre-expansion. The initial expansion temperature is 80-85°C, and the maximum heat-resistant temperature is 125-130°C. Use a water bath to pre-foam the microspheres. The water bath temperature is 85 ℃, heating and pre-expanding for 10 minutes to about 40% of the optimal expansion size.

[0060] (3) Get 15 parts of bleached wood pulp sheets and hydrobeat until the fibers are completely loosened, the beating concentration is 5%, and the moisture content of the fibers after water filtration is 70% (35 parts of water)

[006...

Embodiment 2

[0066] This embodiment is improved on the basis of Embodiment 1.

[0067] Steps (1) to (5) are the same as those in Example 1, only step (6) is: fill the slurry obtained in step (5) into a corrugated mold at a temperature of 130°C and a pressure of 0.5 MPa, and continue heating After 45s, a fiber-based microporous structure with a structural thickness (the distance from the peak to the trough of the sample) of 12mm was obtained. This example has the same formula and process as Example 1, and the mechanical properties of the base material are unchanged. For the specific sample structure, see attached figure 1 And attached figure 2 .

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Abstract

The invention discloses a fiber-based microporous structure and a preparation method thereof. The preparation raw materials include plant fiber pulp sheets, adhesives, heat-expandable particles, plasticizers, cross-linking agents and water. The preparation method includes: mixing and heating the adhesive and water; heating and pre-expanding the heat-expandable particles; hydraulic beating of the plant fiber pulp sheet; stirring the product of the above steps to form a slurry; adding a cross-linking agent for cross-linking; heating and pressing molding. The fiber-based microporous structure of the invention can replace plastic cushioning materials, protect products during transportation, and reduce the harm of plastics to nature and organisms.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to the technical field of transport packaging fillers, in particular to a fiber-based microporous structure and a preparation method thereof. Background technique [0002] With the development of the express delivery industry, the use of packaging fillers continues to grow. At present, the market is still dominated by plastic fillers, which are flexible and convenient to operate, have a wide range of applications and are low in price. However, if plastics cannot be recycled well , Exposure to the natural environment will cause serious harm to the natural environment and organisms. Therefore, it is urgent to develop safe, non-polluting, high-performance, degradable and low-cost alternatives to plastic filling protection materials. Contents of the invention [0003] The purpose of this invention is to develop a new type of packaging filler to replace the plastic buffer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L29/04C08L3/02C08L5/04C08J9/228
CPCC08J9/228C08J2397/02C08J2429/04C08J2403/02C08J2405/04C08J2205/044
Inventor 康勇刚任慧慧
Owner 天津茂创科技发展有限公司
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