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Calcium sulfate whisker/epoxy resin composite filter material and preparation method thereof

A technology of calcium sulfate whisker and epoxy resin, applied in filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problems of complex filter structure, affecting filtration effect, diatomite cracks, etc., and achieve excellent treatment effect , the manufacturing process is simple, the effect of small aperture

Inactive Publication Date: 2015-04-29
SICHUAN MINGXIN JIAJIE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since diatomite is used in a loose state, there is no bonding strength between diatomite particles, so the filter structure is complex and the operation is cumbersome. It is necessary to provide uniform and stable pressure so that diatomite can evenly and stably adhere to the filter. On the filter medium in the filter, and during the working process of the filter, due to pressure fluctuations or defects in the filter medium, it is easy to cause cracks and cracks in the diatomite, which affects the filtering effect.

Method used

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  • Calcium sulfate whisker/epoxy resin composite filter material and preparation method thereof
  • Calcium sulfate whisker/epoxy resin composite filter material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] Example 1: Weigh 80g of bisphenol A epoxy resin (brand: E-51) in a container, add 640g of methanol therein, and stir until the epoxy resin is completely dissolved in methanol. Weigh 720g of calcium sulfate whiskers, slowly add it into the above solution, stir well to form a stable and uniform suspension. Add 20g of aliphatic polyamine-type curing agent ethylenediamine to the suspension, stir for 7 minutes, and then slowly cast it into a disc-shaped mold, then put it in a 68°C oven and bake it for 58 minutes, take it out, and then put it at room temperature Put it down for 24h to make a disc-shaped calcium sulfate whisker / epoxy resin composite filter material, such as figure 1 shown.

Embodiment 2

[0033] Example 2: Weigh 80g of bisphenol A epoxy resin (brand name: E-55) in a container, add 80g of ethanol therein, and stir until the epoxy resin is completely dissolved in ethanol. Weigh 53.3g of calcium sulfate whiskers, slowly add it into the above solution, and stir well to form a stable and uniform suspension. Then add 20g of aliphatic polyamine-type curing agent diethylenetriamine to the suspension, stir for 6 minutes, then slowly cast it into a hollow cylindrical mold, put it into a 70°C oven and bake it for 52 minutes, take it out, and then Place it at room temperature for 20 hours to make a hollow cylindrical calcium sulfate whisker / epoxy resin composite filter material, such as figure 2 shown.

Embodiment 3

[0034] Example 3: Weigh 80g of bisphenol F epoxy resin (grade: 170) into a container, add 160g of isopropanol therein, and stir until the epoxy resin is completely dissolved in isopropanol. Weigh 80g of calcium sulfate whiskers, slowly add it into the above solution, stir well to form a stable and uniform suspension. Then add 20g of aliphatic polyamine type curing agent trimethylhexamethylenediamine to the suspension, stir for 5 minutes, then slowly cast it into a disc-shaped mold, and then bake it in a 72°C oven for 42 minutes Then take it out, and then place it at room temperature for 10h to make a disc-shaped calcium sulfate whisker / epoxy resin composite filter material, such as figure 1 shown.

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Abstract

The invention discloses a calcium sulfate whisker / epoxy resin composite filter material and a preparation method thereof. The composite filter material comprises calcium sulfate whisker and epoxy resin at the mass ratio of (9:1) to (4:6). The preparation method comprises the following steps: S1 weighing; S2 mixing, namely adding an organic solvent to the epoxy resin, adding the calcium sulfate whisker to form a turbid liquid, and adding a solidifying agent to the turbid liquid to obtain a pouring liquid; S3 removing a solvent, namely injecting the pouring liquid into a mold, and processing the mold at 60-80 DEG C for 30-60 minutes; and S4 solidifying, solidifying the mold for 7-26 hours. The calcium sulfate whisker / epoxy resin composite filter material disclosed by the invention is high in filtering accuracy, high in pollution receiving capacity, and low in material cost, and especially has an excellent treatment effect on metal ions such as lead ions in waste water. The preparation method disclosed by the invention has the advantages of being simple in manufacturing process, low in manufacturing cost, convenient to operate and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a filter material, in particular to a calcium sulfate whisker / epoxy resin composite filter material and a preparation method thereof. Background technique [0002] Whisker is a single crystal fiber material with a certain length-to-diameter ratio, which has the characteristics of high strength. It has been widely used in the reinforcement and toughening of polymer materials. The theoretical density of calcium sulfate whiskers is 2.69g / cm 3 , the apparent density is only 0.1~0.4g / cm 3 , so there are a lot of pores inside the calcium sulfate whisker, which is very suitable for the manufacture of filter materials. In addition, calcium sulfate whiskers also have the characteristics of adsorbing metal ions such as lead ions in wastewater. For example, Yang Shuangchun et al. used atomic absorption spectrophotometer as an analysis method to study the adsorption performance of calcium sulfate whiskers on cadmium, nickel and lead ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/08C08K3/30B01D39/14
Inventor 赵德明汪勇
Owner SICHUAN MINGXIN JIAJIE NEW MATERIAL
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