CN2030148U - Rhombus magnesium blackboard - Google Patents
Rhombus magnesium blackboard Download PDFInfo
- Publication number
- CN2030148U CN2030148U CN 88202232 CN88202232U CN2030148U CN 2030148 U CN2030148 U CN 2030148U CN 88202232 CN88202232 CN 88202232 CN 88202232 U CN88202232 U CN 88202232U CN 2030148 U CN2030148 U CN 2030148U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- magnesium
- rhombus
- utility
- model
- 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.)
- Withdrawn
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Abstract
The utility model relates to a rhombus magnesium blackboard, which is characterized in that woven glass fabric is used as the skeleton. The minerals of magnesia, magnesium chloride, iron oxide, scoria, fine sands, etc., sawdust and water are stirred and mixed, and then are put flatly in a mold and dried, thus forming the rhombus magnesium blackboard. The utility model has the advantages of high strength, light weight, simple fabrication, and low cost, and is not easy to be crushed, deformed, and scratched. The rhombus magnesium blackboard has the advantages of the blackboards made of wood, glass and metals, and is an ideal cultural teaching appliance.
Description
The utility model relates to a kind of culture and education articles for use blackboard.
As everyone knows, blackboard be that units such as school, office, group impart knowledge to students, one of the indispensable apparatus of propaganda work.For these years, blackboard generally utilizes timber, glass or metal to make for raw material, and its cost is all than higher.Wooden blackboard scratches and distortion easily, and service life is shorter; Glass and metal blackboard manufacturing process complexity, Heavy Weight, and Glass blackboard is easy to fragmentation again, and carrying inconvenience has brought certain difficulty for transportation and use.
It is simple that the purpose of this utility model provides a kind of process, low price, and have the blackboard of timber, glass and three kinds of blackboard characteristics of metal concurrently.
Fig. 1 is the structural representation of Rhombus magnesium blackboard, also is an embodiment of the present utility model.
Among Fig. 1, whole blackboard is as skeleton by glass fabric (1), mixture (2) with inorganic matters such as magnesia, magnesium chloride, magnesia, slag, fine sand and sawdust and water is a filler, in mould, irritate real floating, become in conjunction with a firm whole sheet material after the dry demoulding, cut out plate nail limit and form.Because the black pigment iron oxide is mixed among the material, so the inside and outside entire body of blackboard presents black.
Its surface of the utility model can apply paint, also can not painting, all can guarantee the effect of use.It can make the shape difference, and the blackboard that size does not wait can be followed closely edge protection, also can not follow closely the limit, does not all influence its intensity.
The technical solution of the utility model is with magnesia, magnesium chloride, iron oxide, slag, inorganic matters such as fine sand and sawdust are prepared mixing by a certain percentage, adding water stirs, make it to become muddy, in mould, spread layer of glass cloth earlier, it is floating then the mud that mixes to be injected mould, spread layer of glass cloth again, the injection mixing mud is floating, carry out twice or thrice repeatedly, thickness is controlled as required, under certain temperature (about 28 ℃) condition, maintain a period of time (about 48 hours), cut out plate after the demoulding, the nail limit forms.
The utility model is owing to adopt inorganic matter and sawdust is that raw material is made, and makes its weight ratio glass or metal blackboard alleviate manyly, carries more convenient; Its intensity and tough property improvement are difficult for fragmentation, can not scratch, and the not yielding and corrosion of wind and weather has prolonged service time; Processing technology is simple, and abundant raw material is with low cost, and it is 1/5th of a Glass blackboard only, and has the advantage of wooden, glass and three kinds of blackboards of metal concurrently, is a kind of more satisfactory culture and education apparatus.
Claims (3)
1, a kind of blackboard is characterized in that with glass fabric (1) be skeleton, makes filler with the mixture (2) of magnesia, magnesium chloride, iron oxide, slag, fine sand, sawdust and water, behind the shaping and drying in conjunction with a firm integral body.
2, blackboard as claimed in claim 1 is characterized in that the black pigment iron oxide is mixed among the material, and entire body presents black.
3, blackboard as claimed in claim 1 or 2 is characterized in that the surface can apply paint, also can not painting, all can guarantee the effect of use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88202232 CN2030148U (en) | 1988-03-22 | 1988-03-22 | Rhombus magnesium blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88202232 CN2030148U (en) | 1988-03-22 | 1988-03-22 | Rhombus magnesium blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2030148U true CN2030148U (en) | 1989-01-04 |
Family
ID=4837268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88202232 Withdrawn CN2030148U (en) | 1988-03-22 | 1988-03-22 | Rhombus magnesium blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2030148U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059646C (en) * | 1996-12-27 | 2000-12-20 | 孟宪明 | Flame-retardant water-proof building material made of waste slag magnesium cement |
| CN102020450A (en) * | 2010-09-28 | 2011-04-20 | 中国科学院青海盐湖研究所 | Manufacturing method of frame structure assembled magnesite concrete packaging box |
| CN104310942A (en) * | 2014-10-14 | 2015-01-28 | 武汉大学 | Formaldehyde-free carbon dioxide absorption functional composite plate and preparation method thereof |
-
1988
- 1988-03-22 CN CN 88202232 patent/CN2030148U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059646C (en) * | 1996-12-27 | 2000-12-20 | 孟宪明 | Flame-retardant water-proof building material made of waste slag magnesium cement |
| CN102020450A (en) * | 2010-09-28 | 2011-04-20 | 中国科学院青海盐湖研究所 | Manufacturing method of frame structure assembled magnesite concrete packaging box |
| CN102020450B (en) * | 2010-09-28 | 2013-01-09 | 中国科学院青海盐湖研究所 | Manufacturing method of frame structure assembled magnesite concrete packaging box |
| CN104310942A (en) * | 2014-10-14 | 2015-01-28 | 武汉大学 | Formaldehyde-free carbon dioxide absorption functional composite plate and preparation method thereof |
| CN104310942B (en) * | 2014-10-14 | 2016-03-16 | 武汉大学 | A kind of zero formaldehyde carbon dioxide absorption function and service sheet material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |