CN101508538B - Re-dispersible latex powder with split resistance capability - Google Patents
Re-dispersible latex powder with split resistance capability Download PDFInfo
- Publication number
- CN101508538B CN101508538B CN2009100217578A CN200910021757A CN101508538B CN 101508538 B CN101508538 B CN 101508538B CN 2009100217578 A CN2009100217578 A CN 2009100217578A CN 200910021757 A CN200910021757 A CN 200910021757A CN 101508538 B CN101508538 B CN 101508538B
- Authority
- CN
- China
- Prior art keywords
- fibre
- fiber
- latex powder
- modulus
- redispersable latex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 239000004816 latex Substances 0.000 title claims description 32
- 229920000126 latex Polymers 0.000 title claims description 32
- 239000000835 fiber Substances 0.000 claims abstract description 71
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000003776 cleavage reaction Methods 0.000 claims description 15
- 230000007017 scission Effects 0.000 claims description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 229920002972 Acrylic fiber Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000000839 emulsion Substances 0.000 abstract description 4
- 239000011083 cement mortar Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 8
- 239000004570 mortar (masonry) Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002627 poly(phosphazenes) Polymers 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
- C04B40/0042—Powdery mixtures
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to re-dispersible emulsion powder with cracking resistance, which consists of 93 to 98 percent of re-dispersible emulsion powder, 1 to 5 percent of high-strength high-modulus fiber and 1 to 2 percent of dispersing agent for fiber. The re-dispersible emulsion powder with the cracking resistance has simple process and low cost, and can completely solve the problem of the cracking of cement mortar.
Description
Technical field
The present invention relates to a kind of redispersable latex powder, relate in particular to a kind of redispersable latex powder with resistance to cleavage.
Background technology
The novel building dry-mixed mortar is in a certain proportion of cement, dry silica sand, flyash, grey calcium, to have added multiple high molecular polymer, and the commodity dry mortar after powder mixing machine thorough mixing homogenizing, and it is called polyphosphazene polymer and thing mortar again.And be preparation polyphosphazene polymer and the indispensable starting material of thing mortar by the redispersable latex powder that the emulsion of polymer vinyl acetate-ethylene copolymer is processed through centrifugal spray drying; Because having given full play to organic polymer in novel dry-mixed mortar, it gathers the chemical action with thing; The pure sand-cement slurry of script rigidity is modified as to be had gathering and the thing mortar of certain flexibility; Improve the ability of aspects such as the cracking resistance of sand-cement slurry, impervious, shock resistance simultaneously, therefore occupied extremely important status in building energy conservation and the external wall outer insulation in modern times.However, this redispersable latex powder does not still have thoroughly to solve the problem of sand-cement slurry be full of cracks.
Summary of the invention
Technical problem to be solved by this invention provides a kind of redispersable latex powder with resistance to cleavage that can thoroughly solve sand-cement slurry be full of cracks problem.
Another technical problem to be solved by this invention provides the method that a kind of preparation has the redispersable latex powder of resistance to cleavage.
For addressing the above problem; A kind of redispersable latex powder with resistance to cleavage of the present invention is characterized in that: it is made up of 93%～98% the redispersable latex powder that accounts for gross weight, 1%～5% high-strength high-modulus fibre and 1%～2% dispersing agent for fibre.
Said high-strength high-modulus fibre is a high strength high modulus polyvinyl alcohol fiber.
Said high-strength high-modulus fibre is meant the conjugated fibre that high strength high modulus polyvinyl alcohol fiber that accounts for gross weight 70%～80% and the auxiliary fiber that accounts for gross weight 20%～30% are formed; Wherein said auxiliary fiber is any one in alkali resistant glass, high-strength polyester fiber, polyethylene fibre, polypropylene fiber, acrylic fiber, nylon fiber, aramid fiber and the thomel.
The staple length of said high-strength high-modulus fibre is 0.2～6.0mm.
Prepare aforesaid a kind of method with redispersable latex powder of resistance to cleavage, it may further comprise the steps:
(1) by each raw material of proportioning weighing;
(2) the high-strength high-modulus fibre input is had in the blender of high speed fly cutter, and the adding dispersing agent for fibre stirs;
(3) blender that the redispersable latex powder input is had a high speed fly cutter stirs;
(4) when high-strength high-modulus fibre reaches the homodisperse degree in redispersable latex powder after, carry out the automatic gauge packing and get final product.
The present invention compared with prior art has the following advantages:
1, since fiber that the present invention adopted be high strength high modulus polyvinyl alcohol fiber or be main conjugated fibre with the high strength high modulus polyvinyl alcohol fiber; And this kind fiber not only has advantages of higher tensile strength (1200～1500Mpa) and Young's modulus (35～40GPa); Alkali resistance, acid resistance and good sunlight resistance and certain wetting ability preferably; And because the xsect of this kind fiber all is abnormity; Therefore have good affinity with the interface of cement matrix, can satisfy various demands of gathering with the thing mortar.
2, because the present invention has added high-strength high-modulus fibre in redispersable latex powder; Therefore give redispersable latex powder new intension; Become the synergistic effect of chemistry and physics combination by the single chemical effect of script; Make it resistance to cleavage and be enhanced, solved the be full of cracks problem of sand-cement slurry effectively, also improved the weather resistance of sand-cement slurry simultaneously effectively.
3, technology of the present invention is simple, cost is low, is easy to suitability for industrialized production.
Embodiment
1 one kinds of redispersable latex powder 100kg with resistance to cleavage of embodiment are that high-strength high-modulus fibre 5kg, the dispersing agent for fibre 2kg of 0.2～6.0mm forms by redispersable latex powder 93kg, staple length.Wherein high-strength high-modulus fibre is a high strength high modulus polyvinyl alcohol fiber.
Each raw material is the commercially available prod.
Prepare aforesaid a kind of method with redispersable latex powder of resistance to cleavage, it may further comprise the steps:
(1) by each raw material of proportioning weighing;
(2) the high-strength high-modulus fibre input is had in the blender (ZL200410026255.1/ application number 200710162938.3) of high speed fly cutter, and add dispersing agent for fibre stirring 3～5 minutes, it is mixed;
(3) blender that the redispersable latex powder input is had a high speed fly cutter stirred 3～5 minutes, and it is mixed;
(4) in redispersable latex powder, when naked-eye observation does not have the conglomeration thing, reach the homodisperse degree when high-strength high-modulus fibre, carry out automatic gauge then, get final product by 25～40kg/ bag packing.
2 one kinds of redispersable latex powder 100kg with resistance to cleavage of embodiment are that high-strength high-modulus fibre 1kg, the dispersing agent for fibre 1kg of 0.2～6.0mm forms by redispersable latex powder 98kg, staple length.
Wherein: high-strength high-modulus fibre is the conjugated fibre that the auxiliary fiber of high strength high modulus polyvinyl alcohol fiber and the 300g of 700g is formed; Auxiliary fiber is any one in alkali resistant glass, high-strength polyester fiber, polyethylene fibre, polypropylene fiber, acrylic fiber, nylon fiber, aramid fiber and the thomel.
Each raw material is the commercially available prod.
The preparation method is with embodiment 1.
3 one kinds of redispersable latex powder 100kg with resistance to cleavage of embodiment are that high-strength high-modulus fibre 3.5kg, the dispersing agent for fibre 1.5kg of 0.2～6.0mm forms by redispersable latex powder 95kg, staple length.
Wherein high-strength high-modulus fibre is the conjugated fibre that the auxiliary fiber of high strength high modulus polyvinyl alcohol fiber and the 700g of 2800g is formed; Auxiliary fiber is with embodiment 2.
Each raw material is the commercially available prod.
The preparation method is with embodiment 1.
4 one kinds of redispersable latex powder 100kg with resistance to cleavage of embodiment are that high-strength high-modulus fibre 1kg, the dispersing agent for fibre 1kg of 0.2～6.0mm forms by redispersable latex powder 98kg, staple length.
Wherein high-strength high-modulus fibre is the conjugated fibre that the auxiliary fiber of high strength high modulus polyvinyl alcohol fiber and the 250g of 750g is formed; Auxiliary fiber is with embodiment 2.
Each raw material is the commercially available prod.
The preparation method is with embodiment 1.
Claims (3)
1. redispersable latex powder with resistance to cleavage is characterized in that: it is made up of 93%～98% the redispersable latex powder that accounts for gross weight, 1%～5% high-strength high-modulus fibre and 1%～2% dispersing agent for fibre; Said high-strength high-modulus fibre is a high strength high modulus polyvinyl alcohol fiber; Perhaps said high-strength high-modulus fibre is meant the conjugated fibre that high strength high modulus polyvinyl alcohol fiber that accounts for gross weight 70%～80% and the auxiliary fiber that accounts for gross weight 20%～30% are formed; Wherein said auxiliary fiber is any one in alkali resistant glass, high-strength polyester fiber, polyethylene fibre, polypropylene fiber, acrylic fiber, nylon fiber, aramid fiber and the thomel.
2. a kind of redispersable latex powder with resistance to cleavage as claimed in claim 1 is characterized in that: the staple length of said high-strength high-modulus fibre is 0.2～6.0mm.
3. prepare a kind of method with redispersable latex powder of resistance to cleavage as claimed in claim 1, it may further comprise the steps:
(1) by each raw material of proportioning weighing;
(2) the high-strength high-modulus fibre input is had in the blender of high speed fly cutter, and the adding dispersing agent for fibre stirs;
(3) blender that the redispersable latex powder input is had a high speed fly cutter stirs;
(4) when high-strength high-modulus fibre reaches the homodisperse degree in redispersable latex powder after, carry out the automatic gauge packing and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100217578A CN101508538B (en) | 2009-03-16 | 2009-03-16 | Re-dispersible latex powder with split resistance capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100217578A CN101508538B (en) | 2009-03-16 | 2009-03-16 | Re-dispersible latex powder with split resistance capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101508538A CN101508538A (en) | 2009-08-19 |
| CN101508538B true CN101508538B (en) | 2012-07-04 |
Family
ID=41001096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100217578A Expired - Fee Related CN101508538B (en) | 2009-03-16 | 2009-03-16 | Re-dispersible latex powder with split resistance capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101508538B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449747B (en) * | 2013-07-05 | 2015-05-06 | 广东粤盛特种建材有限公司 | Multifunctional composite fiber anti-cracking material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458183A (en) * | 2003-05-27 | 2003-11-26 | 韩金顺 | Quick soluble dispersive emulsoid powder and its producing method |
| CN1632027A (en) * | 2004-11-16 | 2005-06-29 | 张国栋 | Aldehyde-free water soluble adhesive |
| CN101168584A (en) * | 2007-09-28 | 2008-04-30 | 上海东升新材料有限公司 | Redispersable latex powder emulsion, redispersable latex powder and preparation method thereof |
-
2009
- 2009-03-16 CN CN2009100217578A patent/CN101508538B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458183A (en) * | 2003-05-27 | 2003-11-26 | 韩金顺 | Quick soluble dispersive emulsoid powder and its producing method |
| CN1632027A (en) * | 2004-11-16 | 2005-06-29 | 张国栋 | Aldehyde-free water soluble adhesive |
| CN101168584A (en) * | 2007-09-28 | 2008-04-30 | 上海东升新材料有限公司 | Redispersable latex powder emulsion, redispersable latex powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 胡康宁.高强高模聚乙烯醇纤维在砂浆/混凝土中的应用.《中国国际建筑干混砂浆生产应用技术研讨会论文集》.2004,第141-144页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101508538A (en) | 2009-08-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20140316 |