Polyether defoamer
A technology of polyether defoamer and polyethylene glycol ether, which is applied in the field of polyether defoamer, can solve the problems of low cost, poor defoaming and antifoaming effect of defoamer, and achieve improved gloss and strong emulsification , the effect of excellent defoaming ability
Inactive Publication Date: 2010-02-03
尹玉娟
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Problems solved by technology
[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a polyether defoamer through optimized formula design and careful manufacture, which solves the problem of poor defoaming and foam suppression effects of the defoamer in the prior art , and low cost, widely used
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0012] The present invention is configured by weight ratio by following composition:
[0013] Polyethylene glycol ether: ethylene oxide: butanol: lecithin: magnesium hydroxide = 100:95:40:45:55.
Embodiment 2
[0015] It is configured by weight ratio of the following components: polyethylene glycol ether: ethylene oxide: butanol: lecithin: magnesium hydroxide=80:60:20:30:40.
Embodiment 3
[0017] It is prepared from the following components in weight ratio: polyethylene glycol ether: ethylene oxide: butanol: lecithin: magnesium hydroxide=160:120:50:65:70.
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The invention relates to a polyether defoamer suitable for papermaking processes such as pulping, papermaking, coating and the like. The polyether defoamer is prepared from the following compositions:polyglycol ether, epoxy ethane, butyl alcohol, lecithin and magnesium hydroxide of which the weight ratio is 80-160:60-120:20-50:30-65:40-70. The polyether defoamer has good defoaming capacity and foam inhibiting capacity, and strong emulsifying, dispersing and permeating capacities, can be self-emulsified in a water system, has lasting defoaming effect, no toxicity, cheap price, and no side effect on the cohesiveness, dispersity and printing adaptability of coatings, and can improve the glossiness, picking speed and lubricating performance of paper.
Description
technical field [0001] The invention relates to a defoamer, in particular to a polyether defoamer, which is suitable for papermaking processes such as pulping, papermaking and coating. Background technique [0002] The amount of defoamer used in the paper industry is not large, but its role cannot be ignored. In the whole pulp and paper industry process, a series of operations after cooking and discharging, such as washing, screening, bleaching, thickening, pulp supply system, surface sizing, coating, black liquor recovery, etc., are affected to varying degrees by foam It will interfere with normal production, reduce the quality of paper, and even make production impossible in serious cases. Foam elimination methods mainly include chemical, physical and mechanical methods. The chemical defoaming method is to add chemical substances (defoamers) to eliminate foam during the production process; the physical defoaming method uses standing, heating or decompression to eliminate...
Claims
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IPC IPC(8): D21H21/12
Inventor 尹玉娟
Owner 尹玉娟
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