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
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- 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.)
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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
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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. * |
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| Publication number | Publication date |
|---|---|
| CN101508538A (en) | 2009-08-19 |
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Granted publication date: 20120704 Termination date: 20140316 |