CN112011080A - Hydrophilic polyurethane sponge for sewage treatment - Google Patents
Hydrophilic polyurethane sponge for sewage treatment Download PDFInfo
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- CN112011080A CN112011080A CN202010909337.XA CN202010909337A CN112011080A CN 112011080 A CN112011080 A CN 112011080A CN 202010909337 A CN202010909337 A CN 202010909337A CN 112011080 A CN112011080 A CN 112011080A
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 18
- 239000004814 polyurethane Substances 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 25
- 239000006260 foam Substances 0.000 claims abstract description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 17
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 17
- 150000001412 amines Chemical class 0.000 claims abstract description 17
- 239000004917 carbon fiber Substances 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000004088 foaming agent Substances 0.000 claims abstract description 17
- 229920000570 polyether Polymers 0.000 claims abstract description 17
- 229920005862 polyol Polymers 0.000 claims abstract description 17
- 150000003077 polyols Chemical class 0.000 claims abstract description 17
- 239000012974 tin catalyst Substances 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 17
- 239000011324 bead Substances 0.000 claims description 7
- LADVLFVCTCHOAI-UHFFFAOYSA-N isocyanic acid;toluene Chemical compound N=C=O.CC1=CC=CC=C1 LADVLFVCTCHOAI-UHFFFAOYSA-N 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- -1 aminopropyl group Chemical group 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
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Abstract
本发明涉及污水处理领域，具体涉及一种用于污水处理的亲水性聚氨酯海绵，由以下重量份的原料制备而成：亲水性聚醚多元醇100份、碳素纤维1～5份、介孔二氧化硅杂化球5～30份、胺催化剂0.3～0.5份、锡催化剂0.02～0.04份、发泡剂3～6份、均泡剂2～4份、异氰酸酯40～50份。本发明具有优良的亲水性和吸附性，且可以自行悬浮在污水内，进行吸附处理，从而提高污水处理效率。The invention relates to the field of sewage treatment, in particular to a hydrophilic polyurethane sponge for sewage treatment, which is prepared from the following parts by weight of raw materials: 100 parts of hydrophilic polyether polyol, 1 to 5 parts of carbon fiber, 5-30 parts of mesoporous silica hybrid balls, 0.3-0.5 parts of amine catalyst, 0.02-0.04 parts of tin catalyst, 3-6 parts of foaming agent, 2-4 parts of foam equalizer, and 40-50 parts of isocyanate. The invention has excellent hydrophilicity and adsorption, and can be suspended in sewage by itself for adsorption treatment, thereby improving sewage treatment efficiency.
Description
技术领域technical field
本发明涉及污水处理领域，具体涉及一种用于污水处理的亲水性聚氨酯海绵。The invention relates to the field of sewage treatment, in particular to a hydrophilic polyurethane sponge for sewage treatment.
背景技术Background technique
近年来，随着工农业污水及城市生活污水排放量的逐渐增加，我国的江、河、湖、库水域普遍受到不同程度的污染，水质在不断恶化，对生态环境和人类健康造成严重的危害。In recent years, with the gradual increase in the discharge of industrial and agricultural sewage and urban domestic sewage, the waters of rivers, rivers, lakes and reservoirs in my country are generally polluted to varying degrees, and the water quality is constantly deteriorating, causing serious harm to the ecological environment and human health.
现阶段对污水的常规处理方法有：1、物理处理法：利用物理作用分离污水中的固体污染物，包括栅格法、沉淀法以及离心法；2、化学处理法：通过对污水中添加一定量的化学药品，形成中和、混凝、氧化还原等化学技术；3、生物处理法：通过微生物的代谢作用，使污水中的有机物转化为无害物质，包括活性污泥法、厌氧处理法等。The conventional treatment methods for sewage at this stage are: 1. Physical treatment method: use physical action to separate solid pollutants in sewage, including grid method, sedimentation method and centrifugal method; 2. Chemical treatment method: by adding certain amount of sewage to sewage 3. Biological treatment method: through the metabolism of microorganisms, the organic matter in the sewage is converted into harmless substances, including activated sludge method, anaerobic treatment law, etc.
海绵结构对污水中的悬浮物以及诸多细菌，有着较好的处理效果，然而，现有的聚氨酯海绵普遍存在着亲水性和吸附性较差，无法自行沉降到污水内进行吸附处理的缺陷。The sponge structure has a good treatment effect on the suspended solids and many bacteria in the sewage. However, the existing polyurethane sponges generally have the defects of poor hydrophilicity and adsorption, and cannot settle into the sewage by themselves for adsorption treatment.
发明内容SUMMARY OF THE INVENTION
为解决上述问题，本发明提供了一种用于污水处理的亲水性聚氨酯海绵，具有优良的亲水性和吸附性，且可以自行悬浮在污水内，进行吸附处理，从而提高污水处理效率。In order to solve the above problems, the present invention provides a hydrophilic polyurethane sponge for sewage treatment, which has excellent hydrophilicity and adsorption, and can be suspended in sewage by itself for adsorption treatment, thereby improving sewage treatment efficiency.
为实现上述目的，本发明采取的技术方案为：To achieve the above object, the technical scheme adopted in the present invention is:
用于污水处理的亲水性聚氨酯海绵，由以下重量份的原料制备而成：The hydrophilic polyurethane sponge for sewage treatment is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维 1～5份、介孔二氧化硅杂化球 5～30份、胺催化剂 0.3～0.5份、锡催化剂 0.02～0.04份、发泡剂3～6份、均泡剂 2～4份、异氰酸酯 40～50份。100 parts of hydrophilic polyether polyol, 1-5 parts of carbon fiber, 5-30 parts of mesoporous silica hybrid ball, 0.3-0.5 part of amine catalyst, 0.02-0.04 part of tin catalyst, 3-30 parts of foaming agent 6 parts, 2-4 parts of foam equalizer, 40-50 parts of isocyanate.
优选地，由以下重量份的原料制备而成：Preferably, it is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维 1 份、介孔二氧化硅杂化球 5份、胺催化剂 0.3份、锡催化剂 0.02份、发泡剂 3份、均泡剂 2份、异氰酸酯 40份。100 parts of hydrophilic polyether polyol, 1 part of carbon fiber, 5 parts of mesoporous silica hybrid ball, 0.3 part of amine catalyst, 0.02 part of tin catalyst, 3 parts of foaming agent, 2 parts of foam equalizer, isocyanate 40 servings.
优选地，由以下重量份的原料制备而成：Preferably, it is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维 5份、介孔二氧化硅杂化球 30份、胺催化剂 0.5份、锡催化剂 0.04份、发泡剂 6份、均泡剂 4份、异氰酸酯 50份。100 parts of hydrophilic polyether polyol, 5 parts of carbon fiber, 30 parts of mesoporous silica hybrid ball, 0.5 part of amine catalyst, 0.04 part of tin catalyst, 6 parts of foaming agent, 4 parts of foam equalizer, isocyanate 50 servings.
优选地，由以下重量份的原料制备而成：Preferably, it is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维3份、介孔二氧化硅杂化球 17.5份、胺催化剂 0.4份、锡催化剂 0.03份、发泡剂4.5份、均泡剂 3份、异氰酸酯 45份。100 parts of hydrophilic polyether polyol, 3 parts of carbon fiber, 17.5 parts of mesoporous silica hybrid ball, 0.4 part of amine catalyst, 0.03 part of tin catalyst, 4.5 parts of foaming agent, 3 parts of foam equalizer, isocyanate 45 servings.
进一步地，所述介孔二氧化硅杂化球由螯合型二乙酸氨丙基修饰的介孔二氧化硅杂化材料制备所得，所述均泡剂为吸水性硅油。Further, the mesoporous silica hybrid sphere is prepared from a mesoporous silica hybrid material modified by chelating diacetate aminopropyl group, and the foam equalizer is water-absorbing silicone oil.
进一步地，所述碳素纤维与介孔二氧化硅杂化复合串联成珠串。Further, the carbon fiber and the mesoporous silica hybrid composite are connected in series to form a bead string.
进一步地，制备时，将珠串与亲水性聚醚多元醇混合后，搅拌5min左右，加入锡催化剂，搅拌6min左右后，依次加入发泡剂、胺催化剂和泡沫稳定剂，搅拌2min后，倒入甲苯异氰酸酯，并提升转速至1000rp/min，搅拌5～10s后，即得。Further, during preparation, after mixing the beads with hydrophilic polyether polyol, stirring for about 5 minutes, adding tin catalyst, stirring for about 6 minutes, adding foaming agent, amine catalyst and foam stabilizer in turn, stirring for 2 minutes, Pour in toluene isocyanate, increase the rotational speed to 1000rp/min, and stir for 5-10s.
本发明具有以下有益效果：The present invention has the following beneficial effects:
通过引入介孔二氧化硅杂化球和碳素纤维，大大提高了聚氨酯海绵的吸附性；By introducing mesoporous silica hybrid balls and carbon fibers, the adsorption capacity of polyurethane sponge is greatly improved;
采用珠串的形式进行介孔二氧化硅杂化球和碳素纤维的布置，大大方便了介孔二氧化硅杂化球和碳素纤维的回收利用；The arrangement of mesoporous silica hybrid spheres and carbon fibers in the form of bead strings greatly facilitates the recycling of mesoporous silica hybrid spheres and carbon fibers;
不同引入不同重量的介孔二氧化硅杂化球，从而使得聚氨酯海绵可以自行悬浮在污水内不同的位置，进行吸附处理，从而提高污水处理效率。Different weights of mesoporous silica hybrid balls are introduced, so that the polyurethane sponge can suspend itself in different positions in the sewage for adsorption treatment, thereby improving the efficiency of sewage treatment.
具体实施方式Detailed ways
为了使本发明的目的及优点更加清楚明白，以下结合实施例对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objects and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
以下实施例中：所述介孔二氧化硅杂化球由螯合型二乙酸氨丙基修饰的介孔二氧化硅杂化材料制备所得，所述均泡剂为吸水性硅油；所述碳素纤维与介孔二氧化硅杂化复合串联成珠串。In the following examples: the mesoporous silica hybrid sphere is prepared from a mesoporous silica hybrid material modified by chelating diacetate aminopropyl group, the foam equalizer is water-absorbing silicone oil; the carbon The cellulose fiber and the mesoporous silica hybrid composite are connected in series to form a bead string.
实施例1Example 1
用于污水处理的亲水性聚氨酯海绵，由以下重量份的原料制备而成：The hydrophilic polyurethane sponge for sewage treatment is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维 1 份、介孔二氧化硅杂化球 5份、胺催化剂 0.3份、锡催化剂 0.02份、发泡剂 3份、均泡剂 2份、异氰酸酯 40份。100 parts of hydrophilic polyether polyol, 1 part of carbon fiber, 5 parts of mesoporous silica hybrid ball, 0.3 part of amine catalyst, 0.02 part of tin catalyst, 3 parts of foaming agent, 2 parts of foam equalizer, isocyanate 40 servings.
实施例2Example 2
用于污水处理的亲水性聚氨酯海绵，由以下重量份的原料制备而成：The hydrophilic polyurethane sponge for sewage treatment is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维 5份、介孔二氧化硅杂化球 30份、胺催化剂 0.5份、锡催化剂 0.04份、发泡剂 6份、均泡剂 4份、异氰酸酯 50份。100 parts of hydrophilic polyether polyol, 5 parts of carbon fiber, 30 parts of mesoporous silica hybrid ball, 0.5 part of amine catalyst, 0.04 part of tin catalyst, 6 parts of foaming agent, 4 parts of foam equalizer, isocyanate 50 servings.
实施例3Example 3
用于污水处理的亲水性聚氨酯海绵，由以下重量份的原料制备而成：The hydrophilic polyurethane sponge for sewage treatment is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、碳素纤维3份、介孔二氧化硅杂化球 17.5份、胺催化剂 0.4份、锡催化剂 0.03份、发泡剂4.5份、均泡剂 3份、异氰酸酯 45份。100 parts of hydrophilic polyether polyol, 3 parts of carbon fiber, 17.5 parts of mesoporous silica hybrid ball, 0.4 part of amine catalyst, 0.03 part of tin catalyst, 4.5 parts of foaming agent, 3 parts of foam equalizer, isocyanate 45 servings.
实施例4Example 4
S1、按实施例1/实施例2/实施例3称取各组分；S1, weigh each component by embodiment 1/embodiment 2/embodiment 3;
S2、将珠串与亲水性聚醚多元醇混合后，搅拌5min左右，加入锡催化剂，搅拌6min左右后，依次加入发泡剂、胺催化剂和泡沫稳定剂，搅拌2min后，倒入甲苯异氰酸酯，并提升转速至1000rp/min，搅拌5～10s后，即得。S2. After mixing the beads with hydrophilic polyether polyol, stirring for about 5 minutes, adding tin catalyst, stirring for about 6 minutes, adding foaming agent, amine catalyst and foam stabilizer in turn, after stirring for 2 minutes, pouring toluene isocyanate , and increase the rotational speed to 1000rp/min, and stir for 5-10s.
对比例1Comparative Example 1
由以下重量份的原料制备而成：It is prepared from the following raw materials by weight:
亲水性聚醚多元醇 100份、胺催化剂 0.4份、锡催化剂 0.03份、发泡剂4.5份、均泡剂3份、异氰酸酯 45份。100 parts of hydrophilic polyether polyol, 0.4 part of amine catalyst, 0.03 part of tin catalyst, 4.5 parts of foaming agent, 3 parts of foam equalizer, and 45 parts of isocyanate.
制备时，将亲水性聚醚多元醇置于搅拌桶内，搅拌5min左右，加入锡催化剂，搅拌6min左右后，依次加入发泡剂、胺催化剂和泡沫稳定剂，搅拌2min后，倒入甲苯异氰酸酯，并提升转速至1000rp/min，搅拌5～10s后，即得。During preparation, place the hydrophilic polyether polyol in a stirring bucket, stir for about 5 minutes, add the tin catalyst, after stirring for about 6 minutes, add the foaming agent, amine catalyst and foam stabilizer in turn, after stirring for 2 minutes, pour into toluene Isocyanate, and increase the speed to 1000rp/min, after stirring for 5-10s, it is obtained.
性能测试结果：实施例1、实施例2、实施例3所得的样品分别悬浮在污水内不同深度位置处，而对比例1所得的样品首先漂浮在水面以下，然后逐渐沉入水底；实施例1、实施例2、实施例3所得样品对悬浮物、细菌的吸附率均显著高于对比例1所得的样品。Performance test results: The samples obtained in Example 1, Example 2, and Example 3 were suspended at different depths in the sewage, while the samples obtained in Comparative Example 1 first floated below the water surface, and then gradually sank to the bottom; Example 1 The adsorption rates of the samples obtained in Examples 2 and 3 to suspended solids and bacteria were significantly higher than those of the samples obtained in Comparative Example 1.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.
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