Method for producing polyacrylamide cultivation substrate

Abstract

A production method of a polyacrylamide culture substrate comprises the following steps: first, preparing for five indispensable raw materials; second, preparing mother liquor with the concentration of 30%, wherein, the mother liquor is obtained by mixing 29 parts of Acr by weight, 1 part of Bis by weight and 100 parts of water by weight; third, preparing ammonium persulphate (AP) with the concentration of 10%, wherein, the AP is obtained by dissolving and evenly stirring 10 parts of the AP by weight in 100 parts of water by weight; and fourth, evenly mixing 1000 parts of water, 100-200 partsof 30% mother liquor, the 10% AP solution and commercially available TEMED solution, and keeping standing at normal temperature and pressure for 30-60 minutes of polyreaction to make a colorless and transparent gel type culture substrate. The substrate produced by the production method is applicable to soilless culture and flower arrangement and the culture substrate of ornamental horticulture, and has the advantages of simple production process, quick completion at normal temperature and pressure, high efficiency, good energy saving effect, high product strength, good toughness, strong waterholding capacity and re-imbibition capacity after drying and the like.

Description

【Technical field】 [0001] The invention relates to a polymer water-absorbing material in organic chemistry: a polyacrylamide cultivation substrate for potted plants and flower arrangements and a production method thereof. 【Background technique】 [0002] Beautifying the environment has become a major element of people's lives today. Soilless cultivation can not only solve the problem of lack of urban soil sources, but also help control water, fertilizer, temperature, and air without generating dust. It is widely used in potted plants and flower arrangements. Among them, crystal mud, known as polymer water-absorbing material in the flower industry, is a commonly used soilless cultivation substrate for flower arrangement and flower cultivation. In the prior art, crystal mud is produced by two methods: the one is the production of sodium alginate method, such as the technology disclosed in CN200410058349.7, using a certain concentration of sodium alginate solution and calcium ch...

AI Technical Summary

Problems solved by technology

The acrylic acid used in this method has a strong pungent odor, which deteriorates the operating environment. The production needs to undergo neutralization, oxidation, and reduction reactions. The process is complicated and affects work efficiency.

Some polymerize with acrylic acid, NaOH, and peroxide aqueous solution, and the reaction solution needs to be heated to 50-90°C to polymerize; some have a reaction time of up to 4 hours, which consumes a lot of energy and low work efficiency.

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