Formaldehyde: Generally, a concentration of 36% to 37% of formaldehyde aqueous solution is used. It is used as a bactericidal preservative and is made of industrial products or chemically pure. Ethanol: It is used as a solubilizer to reduce the freezing point and cloud point of the product. It is an industrial product containing 95% ethanol. Isopropanol (C) ZCHOH>: As a solvent, industrial products are used. Fragrance: Choose edible flavors, which can be lemon, rose or other. Water: Use distilled water or cold water. Colorant: Chemically pure product is selected.
The preparation method takes 600×ml of distilled water in a batching device (mixer), and a batching container is preferably made of glass or stainless steel. Weigh the 2409 sodium dodecyl sulfate in the mixer and start stirring. Then, 3 gN.0H, 300 gNC, 129, propylmethylcellulose, and 249 ethylenediaminetetraacetic acid were weighed and placed in a mixer.
Also weighed (using a beaker) 24 (jg nina, 540g sodium polyoxyethylene ether sulfate and transferred to the mixer, the beaker was washed several times with 100ml distilled water and transferred to the mixer. Then take the most 380On, i distilled water Add to the mixer. At this point, the distilled water that needs to be added has been fully added. Another amount of 24ml of formaldehyde, 60Oml of ethanol, and 60Oml of isopropyl alcohol are added to the mixer.
Continue to stir for about 20 to 30 minutes, until all the materials are completely dissolved, weigh the coloring agent olfactory green 0.7-0.89 and the lemon yellow pigment 0.79 in the mixer, dissolve the detergent liquid in blue-green) and then take 8-10l1 The fragrance is placed in the mixer with a little agitation (approximately smln) and the agitation is stopped when all solid material is completely dissolved. Ã Filter the detergent in the mixer with a double cotton gauze (or 40 mesh stainless steel screen) and dispense into a 500 ml/bottle bottle with a spray nozzle.
When using the method and effect, the agent is sprayed on the surface of the oily part. When bonding, clean the parts to be glued, evenly apply the blending agent after drying, and then apply the adhesive to the positive anastomosis. In the production process, the polystyrene is placed in a porcelain or glass container (also available in a stainless steel container), and then the organic solvent banana water is added according to the ratio, and the container mouth is sealed immediately after stirring to prevent the evaporation of the organic solvent.
After the polystyrene is dissolved (usually 8 to 10 hours), add a certain amount of thickener, stir well, then dispense in iron or plastic (do not use plastic made of polystyrene) container Medium, sealed for use. Process Description (1) The finer the polystyrene raw material, the better. It is best to use a pulverizer to sift through the sieve to accelerate the dissolution. (2) A small amount (1%) of a polyvinyl alcohol solution may be added in order to enhance the adhesion.
The method of using white latex and polyvinyl acetate phenol emulsion is the same, except that the adhesive strength of the glue is relatively strong. Therefore, the relative amount of the glue is only used to extract the pectin. The pectin is a natural compound. Sugar polymer compounds have a wide range of uses in the food, pharmaceutical and household chemical industries.
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