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A modified starch and nanocomposite technology, applied in fiber processing, textiles and papermaking, etc., can solve the problems of inconvenient storage and transportation, low slurry stability, and high transportation costs, and reduce storage and transportation costs, and reduce slurry adhesion. Strong, sizing hairiness applique effect
Inactive Publication Date: 2010-07-28
石绍华
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Problems solved by technology
However, the slurry of this composition is in the form of a slurry, which is inconvenient for storage and transportation, and the transportation cost is high; moreover, the stability of this slurry is still low, and it is easy to agglomerate and even precipitate and stratify during storage.
And a large amount of inorganic phosphate in the slurry will lead to phosphating of the water body, causing environmental pollution
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0022] Preparation of 16% SiO in a 3000L reactor 2 Na 2 SiO 3 Solution 1200L, add 20% H dropwise while stirring 2 SO 4 , until the pH value is 8.0, add 20Kg soluble starch, stir and heat up to 35°C, add 280Kg oxidized starch, stir well, heat up to 45°C, keep warm for 30 minutes, transfer the slurry to a centrifuge while it is hot, and filter the cake Wash with tap water until the eluate is nearly neutral, and transfer the filter cake to an oven at 130°C for drying. The desired oxidized starch nanocomposite solid glue is obtained.
Embodiment 2
[0024] Prepare 400L20% NaAlO 2 Put the aqueous solution into a 1000L stainless steel reaction kettle, add 10% hydrochloric acid dropwise while stirring until the pH reaches 6.5, add 2Kg soluble starch, stir and heat up to 30°C, add 100Kg oxidized starch, heat up to 50°C, and keep it warm for 1 hour. Cool to 30°C, centrifuge to filter out the liquid, wash the filter cake with water until the pH value of the eluate is 7.0, transfer the filter cake to an oven, and heat up to 140°C for drying. The dried samples were pulverized, passed through a 40-mesh sieve, and packed for use.
Embodiment 3
[0026] Add 16% SiO to a 3000L stainless steel reactor 2 Na 2 SiO 3 Solution 600L and 20% NaAlO 2 600L aqueous solution, stirring and adding 18% sulfuric acid dropwise until the pH value is 7.5, adding 5Kg soluble starch, stirring to raise the temperature to 40°C, then adding 20Kg acid-thinned starch, heating up to 50°C, keeping warm for 30 minutes, cooling to room temperature, and centrifuging , wash the filter cake with water until it is nearly neutral, transfer it to an oven, dry it at 160°C, crush it, pass it through a 40-mesh sieve, and pack it for later use.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention relates to a modified starch nano composite solid gum stock and a preparation method thereof, belonging to the technical field of fine chemical engineering. The modified starch nano composite solid gum stock is made from nano particles, the gum stock is in the shape of solid power and features good stability in the process of storage and usage and non-agglomeration of the nano particles. The preparation method comprises the following steps: adding soluble starch as polymeric dispersant when collosol reaction happens inorganic salt and acid or alkaline; then adding modified starch and carrying out ageing reaction with the nano particles before carrying out centrifugal separation; finally drying. As the gum stock is in the shape of solid powder, so that period of validity is lengthened, packaging, storage and transportation are facilitated, maintenance and transportation fees are reduced. With sizing agent prepared from the solid gum stock applied to warp sizing, the anchoring strength of the sizing agent is good, warp sizing filoplume is appressed, abrasive resistance is improved by 15-20%; in particular, the nano particles in the sizing agent features stability and non-agglomeration and retrogradation, improves weaving efficiency, can completely replace polyving alcohol and belongs to warp sizing assisting agent for ecological fabrics.
Description
Technical field: [0001] The invention relates to a modified starch nano-composite solid glue and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique: [0002] Although the existing modified starch size can meet the needs of general textile warp yarn sizing, its abrasion resistance, size film toughness and adhesion still have a large gap compared with polyvinyl alcohol size, and it cannot be completely improved. Alternative to polyvinyl alcohol. Especially for the warp sizing of high-count and high-density fabrics, the current conventional operation still needs to add an appropriate amount of polyvinyl alcohol to the modified starch (or propylene size) to meet the warp sizing requirements. However, polyvinyl alcohol is difficult to degrade and will cause environmental pollution. [0003] Entering this century, Chinese researchers are the first in the world to add inorganic nanoparticles to modified starch, such as adding na...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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