CN103342532B - Preparation method of hybrid enhanced type high-strength gypsum powder and glass fiber hybrid enhanced type gypsum product of gypsum powder - Google Patents
Preparation method of hybrid enhanced type high-strength gypsum powder and glass fiber hybrid enhanced type gypsum product of gypsum powder Download PDFInfo
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- CN103342532B CN103342532B CN201310283356.6A CN201310283356A CN103342532B CN 103342532 B CN103342532 B CN 103342532B CN 201310283356 A CN201310283356 A CN 201310283356A CN 103342532 B CN103342532 B CN 103342532B
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Abstract
The invention discloses a preparation method of a hybrid enhanced type high-strength gypsum powder (MGRG powder for short) and a glass fiber hybrid enhanced type gypsum product of the gypsum powder (MGRG powder for short). The MGRG powder comprises the following ingredients in percentages by weight: 30-50% of special-grade alpha type fiber gypsum powder and 50-70% of special-grade beta type fiber gypsum powder, wherein the above fiber gypsum raw materials are fully and uniformly mixed to obtain the MGRG powder. The preparation method of the MGRG powder comprises the following steps of: S31: mixing the MGRG powder and water in a proportion of 1:0.58-0.60, and uniformly stirring the MGRG powder and the water to obtain the mixture of the MGRG powder and water; S32: firstly adding 50% of the mixture into a mold, then adding glass fiber yarns into the mold, and then adding the rest of the mixture into the mold; and S33: air-drying the de-molded and formed product in a mold processing process to obtain the formed MGRG.
Description
Technical field
The present invention relates to material of construction and manufacture method thereof, particularly relate to a kind of preparation method mixing enhancement type high strength gypsum powder and glass fibre mixing enhancing plastering thereof.
Background technology
Along with the development of building decoration Lightgage Steel Joist plastering furred ceiling technology, prefabricated assembled operating technique is applied at Lightgage Steel Joist plastering furred ceiling, the use plastering that the suspended ceiling modeling of wide variety of conventional is more and more many is prefabricated, is installed in furred ceiling foundation structure.At present, the most frequently used is glass fibre common gypsum goods (β type) and glass fiber high-strength plastering (α type is called for short GRG).
Due to glass fibre common gypsum goods (β type) ultimate compression strength and anti-folding degree poor, generally be applied to conventional, moulding is simple, self stressed lower furred ceiling local sculpt lines, advantage be substantially meet service requirements, cost is low, but, because the intensity of glass fibre common gypsum goods (β type) is low, the service requirements of the complicated furred ceiling of moulding can not be met.Glass fiber high-strength plastering (GRG) ultimate compression strength and anti-folding degree high, generally be applied to special, moulding complexity, self stressed higher big area suspended ceiling modeling, advantage be intensity high, meet high request service requirements, shortcoming is that cost is high, is difficult to be applied in conventional Lightgage Steel Joist plastering furred ceiling.
As can be seen here, although there is glass fiber high-strength plastering (GRG), in this area, still need the high strength gypsum powder improved, while making it possess excellent ultimate compression strength, folding strength, still keep the characteristic of low cost and high strength.
Summary of the invention
The object of the invention is to the deficiency solving the proposition of above-mentioned prior art, the preparation method that a kind of cost is lower, possess the ultimate compression strength of excellence and the mixing enhancement type high strength gypsum powder of folding strength and glass fibre mixing enhancing plastering thereof is simultaneously provided.
According to an aspect of the present invention, a kind of mixing enhancement type high strength gypsum powder is provided, comprises the formula constituent of following weight percent:
Superfine α fiber type terra alba 30%-50%;
Superfine β fiber type terra alba 50%-70%;
Said ratio raw material is mixed, namely obtains mixing enhancement type high strength gypsum powder.
Preferably, described superfine α fiber type terra alba adopts following technique to be prepared from:
S11. the striate gypsum block after cleaning is put into autoclave to dewater;
S12., after striate gypsum dehydration, dry with thermal oil;
S13. the first fragmentation of the striate gypsum after drying carries out fine grinding again, namely obtains superfine α fiber type terra alba.
Preferably, described superfine β fiber type terra alba adopts following technique to be prepared from:
S21. the striate gypsum block after cleaning is first broken, then be finely ground into terra alba;
S22. terra alba is carried out continuously dehydrating and copy system, namely obtain superfine β fiber type terra alba.
According to a further aspect in the invention, provide a kind of glass fibre to mix the preparation method strengthening plastering, comprise the following steps:
S31. the mixing enhancement type high strength gypsum powder of above-mentioned formula mixed by the weight ratio of 1:0.58-0.60 with water, stir fully, obtain the mixture that glass fibre mixing strengthens terra alba and water;
S32. in mould, first add the mixture of 50%, then add glass fiber, then add remaining mixture;
S33. dry after Mould Machining stripping forming, obtain shaping glass fibre mixing and strengthen plastering.
Mixing enhancement type high strength gypsum powder provided by the invention (being called for short: MGRG powder), mixed by superfine α fiber type terra alba and superfine β fiber type terra alba, the preparation technology of these two kinds superfine striate gypsum powder is simple, and cost is lower, and all possesses excellent machining property.The advantage of two kinds of superfine striate gypsum powder flocks together by this mixing enhancement type high strength gypsum powder, make obtained product strength high, not yielding, shrinking percentage is low, long service life, other physicals and chemical property also be improved significantly, self-strength force request can be met, can be widely used in conventional Lightgage Steel Joist plastering furred ceiling.
Glass fibre mixing provided by the invention strengthens plastering and (is called for short: MGRG), not only possess excellent ultimate compression strength and folding strength, and moderate strength, between glass fibre common gypsum goods (β type) and glass fiber high-strength plastering (GRG), possesses good toughness simultaneously; Owing to adopting natural fiber gypsum as raw material, room air can also be regulated.And the mixing of this glass fibre strengthens plastering preparation method technique simply, condition is easily controlled, with low cost, feature low for equipment requirements, is suitable for suitability for industrialized production.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of mixing enhancement type high strength gypsum powder, comprise the formula constituent of following weight percent:
Superfine α fiber type terra alba 30%-50%;
Superfine β fiber type terra alba 50%-70%;
Said ratio raw material is mixed, namely obtains mixing enhancement type high strength gypsum powder.
Preferably, described superfine α fiber type terra alba adopts following technique to be prepared from:
S11. the striate gypsum block after cleaning is put into autoclave to dewater;
S12., after striate gypsum dehydration, dry with thermal oil;
S13. the first fragmentation of the striate gypsum after drying carries out fine grinding again, namely obtains superfine α fiber type terra alba.
Preferred further, in S11 step, the CaSO in described striate gypsum block
4weight percentage>=98%.
Preferred further, in S11 step, the processing parameter of striate gypsum dehydration is: the vapor pressure in autoclave is at 1.5 kilograms-2 kilograms, and pressurize 8 hours, discharges the crystal water of striate gypsum from the water port of autoclave.
Preferred further, in S12 step, the processing parameter that striate gypsum is dried is: bake out temperature 130 DEG C-140 DEG C, drying time 7-8 hour.
Preferred further, in S13 step, the processing parameter of striate gypsum fine grinding is: grinding fineness is 260 order-300 orders.
In more excellent scheme, in S13 step, Raymond mill can be adopted to carry out fine grinding.
The superfine α fiber type terra alba adopting above-mentioned processing method to prepare, purity is high, to spending (more than 95 °), water consumption little (36%-38%), folding strength is good, and smooth finish is good, 2 hours folding strengths are greater than 6 MPas, time of coagulation is 7-9 minute, possess excellent machining property.
Preferably, described superfine β fiber type terra alba adopts following technique to be prepared from:
S21. the striate gypsum block after cleaning is first broken, then be finely ground into terra alba;
S22. terra alba is carried out continuously dehydrating and copy system, namely obtain superfine β fiber type terra alba.
Preferred further, in S21 step, the processing parameter of striate gypsum fine grinding is: grinding fineness is 150 order-180 orders.
In more excellent scheme, in S21 step, Raymond mill can be adopted to carry out fine grinding.
Preferred further, in S22 step, can adopt race's rotary kiln of temperature to carry out continuously dehydrating and copy system.
The superfine β fiber type terra alba adopting above-mentioned processing method to prepare, purity is high, and to spending (93 °), water consumption large (68%-70%), folding strength is higher than other β terra alba, and smooth finish is good, and within 2 hours, folding strength is greater than 4.0 MPas.
Now for the weight percent formula of concrete mixing enhancement type high strength gypsum powder, the present invention is further elaborated.
Embodiment 1
The weight percent recipe ingredient of the present embodiment mixing enhancement type high strength gypsum powder is as follows:
Superfine α fiber type terra alba 30%;
Superfine β fiber type terra alba 70%;
Said ratio raw material is mixed, obtains mixing enhancement type high strength gypsum powder.
Embodiment 2
The weight percent recipe ingredient of the present embodiment mixing enhancement type high strength gypsum powder is as follows:
Superfine α fiber type terra alba 40%;
Superfine β fiber type terra alba 60%;
Said ratio raw material is mixed, obtains mixing enhancement type high strength gypsum powder.
Embodiment 3
The weight percent recipe ingredient of the present embodiment mixing enhancement type high strength gypsum powder is as follows:
Superfine α fiber type terra alba 50%;
Superfine β fiber type terra alba 50%;
Said ratio raw material is mixed, obtains mixing enhancement type high strength gypsum powder.
In above-described embodiment 1-3, the mixing enhancement type high strength gypsum powder mixed by superfine α fiber type terra alba and superfine β fiber type terra alba, the advantage of two kinds of superfine striate gypsum powder is flocked together, make obtained product strength high, not yielding, shrinking percentage is low, long service life, other physicals and chemical property also be improved significantly, self-strength force request can be met, can be widely used in conventional Lightgage Steel Joist plastering furred ceiling.
The present invention also provides a kind of glass fibre to mix the preparation method strengthening plastering, comprises the following steps:
S31. the mixing enhancement type high strength gypsum powder of above-mentioned formula mixed by the weight ratio of 1:0.58-0.60 with water, stir and fully mix, stir fully, obtain the mixture mixing enhancement type high strength gypsum powder and water;
S32. in mould, first add the mixture of 50%, then add glass fiber, then add remaining mixture;
S33. dry after Mould Machining stripping forming, obtain shaping glass fibre mixing and strengthen plastering.
Preferably, the glass fibre added in step S32, should select the glass fiber material possessing good mechanical property, wear resistant, dimensional stability and chemical resistance.By adding glass fibre, the ultimate compression strength of the hardness of matrix material can be improved, and the shrinking percentage and abrasion etc. of matrix material can be reduced.
According to above-described embodiment 1-3 fill a prescription make glass fibre mixing strengthen plastering, the result of carrying out measuring mechanical property is as shown in table 1:
Table 1
As shown in Table 1, the glass fibre mixing adopting above-mentioned processing method to prepare strengthens plastering, properties all improves significantly, not only possess excellent ultimate compression strength and folding strength, and moderate strength, between glass fibre common gypsum goods (β type) and glass fiber high-strength plastering (GRG), possesses good toughness simultaneously; Owing to adopting natural fiber gypsum as raw material, room air can also be regulated.This preparation method's technique is simple, and condition is easily controlled, with low cost, and feature low for equipment requirements, is suitable for suitability for industrialized production.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. mix an enhancement type high strength gypsum powder, it is characterized in that, comprise the formula constituent of following weight percent:
Superfine α fiber type terra alba 30%-50%;
Superfine β fiber type terra alba 50%-70%;
Said ratio raw material is mixed, namely obtains mixing enhancement type high strength gypsum powder;
Described superfine α fiber type terra alba adopts following technique to be prepared from:
S11. the striate gypsum block after cleaning is put into autoclave to dewater;
S12., after striate gypsum dehydration, dry with thermal oil;
S13. the first fragmentation of the striate gypsum after drying carries out fine grinding again, namely obtains superfine α fiber type terra alba;
Described superfine β fiber type terra alba adopts following technique to be prepared from:
S21. the striate gypsum block after cleaning is first broken, then be finely ground into terra alba;
S22. terra alba is carried out continuously dehydrating frying, namely obtain superfine β fiber type terra alba.
2. mixing enhancement type high strength gypsum powder according to claim 1, is characterized in that: in S11 step, the CaSO in described striate gypsum block
4weight percentage>=98%.
3. mixing enhancement type high strength gypsum powder according to claim 2, is characterized in that: in S11 step, striate gypsum dehydration processing parameter be: the vapor pressure in autoclave at 1.5 kilograms-2 kilograms, pressurize 8 hours.
4. mixing enhancement type high strength gypsum powder according to claim 2, is characterized in that: in S12 step, and the processing parameter that striate gypsum is dried is: bake out temperature 130 DEG C-140 DEG C, drying time 7-8 hour.
5. mixing enhancement type high strength gypsum powder according to claim 2, it is characterized in that: in S13 step, the processing parameter of striate gypsum fine grinding is: grinding fineness is 260 order-300 orders.
6. mixing enhancement type high strength gypsum powder according to claim 1, it is characterized in that: in S21 step, the processing parameter of striate gypsum fine grinding is: grinding fineness is 150 order-180 orders.
7. mixing enhancement type high strength gypsum powder according to claim 1, is characterized in that: described striate gypsum adopts Raymond mill to carry out fine grinding.
8. glass fibre mixing strengthens a preparation method for plastering, comprises the following steps:
S31. arbitrary for claim 1 to 7 described mixing enhancement type high strength gypsum powder is mixed by the weight ratio of 1:0.58-0.60 with water, stirs fully, obtain the mixture mixing enhancement type high strength gypsum powder and water;
S32. in mould, first add the mixture of 50%, then add glass fiber, then add remaining mixture;
S33. dry after Mould Machining stripping forming, obtain shaping glass fibre mixing and strengthen plastering.
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Effective date of registration: 20170103 Address after: 101500 Beijing Miyun District Gulou East Street No. 3 Building 3 room 313 landscape -1353 (yunchuang Valley Economic Development Center Office) Patentee after: Beijing Youjia gypsum Technology Co. Ltd. AIA Address before: 101300 Guangming Stone Park, Beijing, North building, No. 56, building No. 6, No. 102, Shunyi District Patentee before: Sun Jiangping |