CN105621928A - Cement foaming agent prepared from scrap leather and method for preparing cement foaming agent - Google Patents
Cement foaming agent prepared from scrap leather and method for preparing cement foaming agent Download PDFInfo
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- CN105621928A CN105621928A CN201610090523.9A CN201610090523A CN105621928A CN 105621928 A CN105621928 A CN 105621928A CN 201610090523 A CN201610090523 A CN 201610090523A CN 105621928 A CN105621928 A CN 105621928A
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- scrap leather
- cement
- blowing agent
- foaming agent
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
Abstract
The invention discloses a cement foaming agent prepared from scrap leather and a method for preparing the cement foaming agent. The cement foaming agent comprises, by weight, 100-150 parts of the scrap leather, 200-250 parts of water, 2-3 parts of calcium hydroxide, 0.5-1 part of alkaline protease, 4-6 parts of calcium oxide, 15-20 parts of propenyl monomer mixtures, 10-20 parts of initiator solution and 5-6 parts of additives. The invention further discloses a method for preparing a concrete water reducing agent from the scrap leather. The cement foaming agent and the methods have the advantages that the cement foaming agent prepared by the aid of the method is good in foaming performance and foam stability, the method is applicable to preparing cement foaming materials, air holes formed in foam cement materials are uniform in size and distribution, accordingly, the cement foaming agent and the methods are favorable for preparing low-density foam cement, preparation processes and preparation procedures are reasonable, and the cement foaming agent and the methods are good in operability.
Description
Technical field
The invention belongs to concrete admixture field, be specifically related to a kind of cement blowing agent utilizing scrap leather bits preparation and preparation method thereof.
Background technology
Foam cement is also called foam concrete or foamed concrete, it is in cement slurry, introduce appropriate bubble, a kind of inside building hardening after stirring again has the lightweight concrete of a large amount of airtight air vent, the good characteristics such as the heat insulating ability that foam cement has, Lightness, high temperature resistant, the feature of environmental protection, economy, adapted to that present society development advocates economize on resources, economic and environment-friendly theory and requirement, it is thus achieved that pay attention to widely. the factor affecting foam cement is a lot, wherein the impact of foaming agent especially pronounced (Liu Yang, Tang Ming, study of the Song Dynasty monarch. concrete foamer progress [J]. concrete, 2012 (9): 57-61). four generation foaming agent are mainly had by the sequencing of the exploitation Applicative time of foaming agent, respectively rosin soap and colophonium pyrolytic polymer foaming agent, synthesis class surfactant type foaming agent, animal and vegetable protein foaming agent, the big classification of complex class foaming agent four (Liu Hengliang. the research of cement blowing agent screening varieties and foam cement technique. Chemical Engineering and equipment, 2015, (11): 39-42), the cement blowing agent of this several types all has sale and application at present, but compared with external advanced foaming agent, the uniformity of the produced foam of China's foaming agent, stability and all undesirable (Chen Jing of fine and closely woven property, Gan Gejin, Zhao Wanqun, Xu Fenlian. the research of a kind of composite water cement foaming agent. material Leader, 2014, 28(special edition 23): 291-293). for the growth requirement of the current foam cement of China, development foaming effect is good, foam stability energy is good, preparation and the further genralrlization tool of foam cement are of great significance by the rational environmental type foaming agent of high comprehensive performance, Costco Wholesale.
China has had become as whole world leather big producing country at present, to produce the leather of about 1.7 hundred million standard brown kraft amounts every year, wherein about 25% eventually become useful leather products, remaining about 75% at sheet, cut, spoiled scrap leather bits in mill and deburring production process, there are about 1,400,000 tons every year, the scrap leather bits of enormous amount, in addition the scrap leather bits of 90% are containing chrome tanning agent, what scrap leather was considered to be worth doing is processed into a difficult problem (Wang Qun for leather industry, Zhang Sufeng, bean Guan Guan, Wang Xuechuan, torrential by force. hydrolytic collagen is applied research in paper industry. Chinese leather, 2015, 44(5): 25-29, Wang Bi, Lin Wei, Ma Chunhui, Zhang Mingrang. the utilization basis present situation of leather castoff resource reusing-collagen protein and prospect. leather chemical industry .2001,18 (3): 10-14), currently mainly to bury, the mode such as burning process, not only cause the huge waste of resource, also create very big environmental pollution. the method of the present invention is in that to utilize scrap leather bits to prepare cement blowing agent, does not have special requirement for scrap leather bits, it is not necessary to separate chromium compound therein, be a treating capacity greatly, very promising scrap leather bits application approach.
Summary of the invention
The present invention provides a kind of cement blowing agent utilizing scrap leather bits preparation and preparation method, utilizes the discarded scurf that leather industry produces to prepare cement blowing agent, and preparation method has the advantages that preparation technology is unique, good in economic efficiency. The features such as prepared foaming agent belongs to animal protein modified foaming agent, and the pore have bubbling efficiency height, producing in foam cement is fine and smooth, be evenly distributed,
For reaching above-mentioned purpose, the technical scheme that the present invention takes is:
The embodiment of the present invention provides a kind of cement blowing agent utilizing scrap leather bits preparation, it is made up according to mass parts of following material: 100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, calcium hydroxide 2 ~ 3 parts, alkaline protease 0.5 ~ 1 part, calcium oxide 4 ~ 6 parts, 15 ~ 20 parts of acrylmonomers mixture, initiator solution 15 ~ 20 parts and additive 5 ~ 6 parts.
In such scheme, the scrap leather bits that described scrap leather bits produce in leather making process for leather industry, contained humidity is less than 15%, and the impurity beyond contained non-scurf is less than 5%.
In such scheme, described calcium hydroxide is technical grade, and content is more than 98%.
In such scheme, described alkaline protease is 2709-alkaline protease, and enzyme activity is 100000u/g, effective ingredient 98%, and Applicable temperature 40 DEG C ~ 60 DEG C and pH are 9 ~ 11.
In such scheme, described calcium oxide is technical grade, and content is more than 98%.
In such scheme, described acrylic monomer mixture is acrylic acid, acrylic acid methyl ester., butyl acrylate, allyl polyethenoxy ether and sodium allylsulfonate is that 5:4:3:6:2 ratio is mixed to get according to mass parts.
In such scheme, described initiator solution is the Ammonium persulfate. of 1 part or sodium peroxydisulfate is dissolved in 20 parts of water and obtains.
In such scheme, described additive is sodium lauryl sulphate and dodecylbenzene sodium sulfonate is obtained by mixing according to mass parts 1:1 ratio.
The preparation method that the embodiment of the present invention also provides for a kind of cement blowing agent utilizing scrap leather bits preparation, this preparation method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 100 ~ 150 parts to be worth doing, add 200 ~ 250 parts of water, be warmed up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts of calcium hydroxide, check that the pH of water is between 9 ~ 11, add 0.5 ~ 1 part of alkaline protease, stir lower insulation 2 ~ 3 hours, be then warmed up to 80 ~ 90 DEG C, add calcium oxide 4 ~ 6 parts, it is stirred for lower insulation reaction 3 ~ 4 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 15 ~ 20 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 15 ~ 20 parts, the two time added controls in 40 ~ 60 minutes, insulation reaction 2 ~ 3 hours after reinforced, cool to 25 ~ 30 DEG C, add additive 5 ~ 6 parts, be 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, the solids content controlling end product is 18% ~ 21%, and products therefrom is cement water reducing agent.
Compared with prior art, beneficial effects of the present invention:
The present invention adopts scrap leather to consider to be worth doing as raw material, after enzymatic degradation completes, it is carried out chemical degradation and chemical modification, by the composite cement blowing agent being prepared for having branched chain molecule; High by the bubbling efficiency of the cement blowing agent prepared by the present invention, the pore formed is fine and smooth, be evenly distributed, preparation technology is unique, remarkable in economical benefits, there is good market application foreground, the present invention adopts scrap leather bits as raw material, considers recycling to be worth doing for scrap leather and have found the approach of application, and also the preparation for protein-based cement blowing agent opens new raw material.
Detailed description of the invention
The present invention is described in detail below.
The embodiment of the present invention provides a kind of cement blowing agent utilizing scrap leather bits preparation, is made up of according to mass parts following material:
100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, calcium hydroxide 2 ~ 3 parts, alkaline protease 0.5 ~ 1 part, calcium oxide 4 ~ 6 parts, 15 ~ 20 parts of acrylmonomers mixture, initiator solution 15 ~ 20 parts and additive 5 ~ 6 parts.
Described scrap leather bits are the scrap leather bits that leather industry produces because of production processes such as deburring, shaving, lamellas in leather making process, and contained humidity is less than 15%, and the impurity beyond contained non-scurf is less than 5%.
Described calcium hydroxide is technical grade, and content is more than 98%.
Described alkaline protease is 2709-alkaline protease, and enzyme activity is 100000u/g, effective ingredient 98%, and Applicable temperature 40 DEG C ~ 60 DEG C and pH are 9 ~ 11.
Described calcium oxide is technical grade, and content is more than 98%.
Described acrylic monomer mixture is acrylic acid, acrylic acid methyl ester., butyl acrylate, allyl polyethenoxy ether and sodium allylsulfonate is that 5:4:3:6:2 ratio is mixed to get according to mass parts.
Described initiator solution is the Ammonium persulfate. of 1 part or sodium peroxydisulfate is dissolved in 20 parts of water and obtains.
Described additive is sodium lauryl sulphate and dodecylbenzene sodium sulfonate is obtained by mixing according to mass parts 1:1 ratio.
The embodiment of the present invention also provides for a kind of preparation method utilizing scrap leather bits to prepare cement water reducing agent, and the method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 100 ~ 150 parts to be worth doing, add 200 ~ 250 parts of water, be warmed up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts of calcium hydroxide, check that the pH of water is between 9 ~ 11, add 0.5 ~ 1 part of alkaline protease, stir lower insulation 2 ~ 3 hours, be then warmed up to 80 ~ 90 DEG C, add calcium oxide 4 ~ 6 parts, it is stirred for lower insulation reaction 3 ~ 4 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 15 ~ 20 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 15 ~ 20 parts, the two time added controls in 40 ~ 60 minutes, insulation reaction 2 ~ 3 hours after reinforced, cool to 25 ~ 30 DEG C, add additive 5 ~ 6 parts, be 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, the solids content controlling end product is about 18% ~ 21%, and products therefrom is cement water reducing agent.
Embodiment 1:
The embodiment of the present invention also provides for a kind of preparation method utilizing scrap leather bits to prepare cement water reducing agent, and the method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 100 parts to be worth doing, add 200 parts of water, be warmed up to 40 DEG C, add 2 parts of calcium hydroxide, check that the pH of water is 9, add 0.5 part of alkaline protease, stir lower insulation 2 hours, be then warmed up to 80 DEG C, add calcium oxide 4 parts, it is stirred for lower insulation reaction 3 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 15 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 15 parts, the two time added controls in 40 minutes, insulation reaction 2 hours after reinforced, cool to 25 DEG C, add additive 5 parts, be 7.5 with the pH of quality acetic acid regulation system, the solids content controlling end product is 18%, and products therefrom is cement water reducing agent.
Embodiment 2:
The embodiment of the present invention also provides for a kind of preparation method utilizing scrap leather bits to prepare cement water reducing agent, and the method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 150 parts to be worth doing, add 250 parts of water, be warmed up to 50 DEG C, add 3 parts of calcium hydroxide, check that the pH of water is 11, add 1 part of alkaline protease, stir lower insulation 3 hours, be then warmed up to 90 DEG C, add calcium oxide 6 parts, it is stirred for lower insulation reaction 4 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 20 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 20 parts, the two time added controls in 60 minutes, insulation reaction 3 hours after reinforced, cool to 30 DEG C, add additive 6 parts, be 8.0 with the pH of quality acetic acid regulation system, the solids content controlling end product is 20%, and products therefrom is cement water reducing agent.
Embodiment 3:
The embodiment of the present invention also provides for a kind of preparation method utilizing scrap leather bits to prepare cement water reducing agent, and the method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 125 parts to be worth doing, add 225 parts of water, be warmed up to 45 DEG C, add 2.5 parts of calcium hydroxide, check that the pH of water is 10, add 0.75 part of alkaline protease, stir lower insulation 2.5 hours, be then warmed up to 85 DEG C, add calcium oxide 5 parts, it is stirred for lower insulation reaction 3.5 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 17.5 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 17.5 parts, the two time added controls in 50 minutes, insulation reaction 2.5 hours after reinforced, cool to 27.5 DEG C, add additive 5.5 parts, be 7.8 with the pH of quality acetic acid regulation system, the solids content controlling end product is 21%, and products therefrom is cement water reducing agent.
Claims (9)
1. the cement blowing agent utilizing scrap leather bits preparation, it is characterized in that, it is made up according to mass parts of following material: 100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, calcium hydroxide 2 ~ 3 parts, alkaline protease 0.5 ~ 1 part, calcium oxide 4 ~ 6 parts, 15 ~ 20 parts of acrylmonomers mixture, initiator solution 15 ~ 20 parts and additive 5 ~ 6 parts.
2. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: the scrap leather bits that described scrap leather bits produce in leather making process for leather industry, contained humidity is less than 15%, and the impurity beyond contained non-scurf is less than 5%.
3. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described calcium hydroxide is technical grade, and content is more than 98%.
4. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described alkaline protease is 2709-alkaline protease, and enzyme activity is 100000u/g, effective ingredient 98%, and Applicable temperature 40 DEG C ~ 60 DEG C and pH are 9 ~ 11.
5. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described calcium oxide is technical grade, and content is more than 98%.
6. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described acrylic monomer mixture is acrylic acid, acrylic acid methyl ester., butyl acrylate, allyl polyethenoxy ether and sodium allylsulfonate is that 5:4:3:6:2 ratio is mixed to get according to mass parts.
7. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described initiator solution is the Ammonium persulfate. of 1 part or sodium peroxydisulfate is dissolved in 20 parts of water and obtains.
8. the cement blowing agent utilizing scrap leather bits preparation according to claim 1, it is characterised in that: described additive is sodium lauryl sulphate and dodecylbenzene sodium sulfonate is obtained by mixing according to mass parts 1:1 ratio.
9. the preparation method of the cement blowing agent utilizing scrap leather bits preparation, it is characterised in that this preparation method is realized by following steps:
Step one: protein solution is prepared in scrap leather bits degraded:
Take scrap leather according to mass parts and consider 100 ~ 150 parts to be worth doing, add 200 ~ 250 parts of water, be warmed up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts of calcium hydroxide, check that the pH of water is between 9 ~ 11, add 0.5 ~ 1 part of alkaline protease, stir lower insulation 2 ~ 3 hours, be then warmed up to 80 ~ 90 DEG C, add calcium oxide 4 ~ 6 parts, it is stirred for lower insulation reaction 3 ~ 4 hours, obtains protein degradation matter solution, heat preservation for standby use;
Step 2: the preparation of cement blowing agent:
Above-mentioned protein degradation matter solution is slowly added 15 ~ 20 parts of pi-allyl mix monomers by dropping mode, it is simultaneously added dropwise the initiator solution of 15 ~ 20 parts, the two time added controls in 40 ~ 60 minutes, insulation reaction 2 ~ 3 hours after reinforced, cool to 25 ~ 30 DEG C, add additive 5 ~ 6 parts, be 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, the solids content controlling end product is 18% ~ 21%, and products therefrom is cement water reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610090523.9A CN105621928B (en) | 2016-02-18 | 2016-02-18 | Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather |
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| CN201610090523.9A CN105621928B (en) | 2016-02-18 | 2016-02-18 | Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather |
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| CN105621928B CN105621928B (en) | 2017-10-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424035A (en) * | 2018-04-19 | 2018-08-21 | 中原工学院 | A kind of preparation method of polymer water cement foaming agent and its foamed concrete |
| CN108484202A (en) * | 2018-03-27 | 2018-09-04 | 申轲 | The cement blowing agent prepared using discarded scurf |
| CN109081627A (en) * | 2018-09-29 | 2018-12-25 | 东南大学 | The method for preparing foaming agent mother liquor using basic protein enzymatic hydrolysis protein |
| CN109761534A (en) * | 2019-02-27 | 2019-05-17 | 阜新圣丽生物工程有限公司 | A kind of concrete foamer and preparation method thereof and its application |
| CN110510607A (en) * | 2019-08-23 | 2019-11-29 | 陕西科技大学 | The polyamide modified scrap leather bits of amine-terminated hyperbrancedization are used as graphene oxide monolithic layer small size dispersing agent and its preparation method and application |
| CN110510606A (en) * | 2019-08-23 | 2019-11-29 | 陕西科技大学 | Degradation scrap leather bits are used as the preparation method that graphene oxide lacks lamella dispersing agent |
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| CN110698141B (en) * | 2019-11-08 | 2021-07-16 | 中电建路桥集团有限公司 | Composite foam light soil and preparation method thereof |
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| CN101020709A (en) * | 2007-02-02 | 2007-08-22 | 中国皮革和制鞋工业研究院 | Process of extracting collagen from chromium-containing waste leather |
| CN102250292A (en) * | 2011-04-29 | 2011-11-23 | 西南科技大学 | Thermoplastic animal protein and preparation method thereof |
| CN104724973A (en) * | 2015-03-19 | 2015-06-24 | 烟台大学 | Preparation method of leather meal cement foaming agent |
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2016
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Patent Citations (3)
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| CN101020709A (en) * | 2007-02-02 | 2007-08-22 | 中国皮革和制鞋工业研究院 | Process of extracting collagen from chromium-containing waste leather |
| CN102250292A (en) * | 2011-04-29 | 2011-11-23 | 西南科技大学 | Thermoplastic animal protein and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484202A (en) * | 2018-03-27 | 2018-09-04 | 申轲 | The cement blowing agent prepared using discarded scurf |
| CN108424035A (en) * | 2018-04-19 | 2018-08-21 | 中原工学院 | A kind of preparation method of polymer water cement foaming agent and its foamed concrete |
| CN109081627A (en) * | 2018-09-29 | 2018-12-25 | 东南大学 | The method for preparing foaming agent mother liquor using basic protein enzymatic hydrolysis protein |
| CN109761534A (en) * | 2019-02-27 | 2019-05-17 | 阜新圣丽生物工程有限公司 | A kind of concrete foamer and preparation method thereof and its application |
| CN110510607A (en) * | 2019-08-23 | 2019-11-29 | 陕西科技大学 | The polyamide modified scrap leather bits of amine-terminated hyperbrancedization are used as graphene oxide monolithic layer small size dispersing agent and its preparation method and application |
| CN110510606A (en) * | 2019-08-23 | 2019-11-29 | 陕西科技大学 | Degradation scrap leather bits are used as the preparation method that graphene oxide lacks lamella dispersing agent |
| CN110510607B (en) * | 2019-08-23 | 2022-07-22 | 陕西科技大学 | Amino-terminated hyperbranched polyamide modified waste crumb used as graphene oxide monolithic layer small-size dispersing agent, and preparation method and application thereof |
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Inventor after: Lv Shenghua Inventor after: Luo Xiaoqian Inventor after: Zhu Linlin Inventor after: Jia Chunmao Inventor before: Lv Shenghua Inventor before: Zhu Linlin Inventor before: Jia Chunmao |
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Effective date of registration: 20200706 Address after: No.62, Jianshan group 1, Longshan Village, Xiaojing Township, Xiuwen County, Guiyang City, Guizhou Province Patentee after: Guizhou xinguangjian concrete admixture Co.,Ltd. Address before: 710021 Shaanxi city of Xi'an province Weiyang University City Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |
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