CN104098930B - A kind of monolithic talcum powder and preparation method thereof - Google Patents
A kind of monolithic talcum powder and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of monolithic talcum powder and preparation method thereof, specifically that talcum powder is first carried out pre-treatment with intercalator, talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer, the high temperature and high pressure that recycling bulking machine provides, force talcum powder layer and layer to be peeled away under the pressure that water molecules is formed in instant vaporization, form the talcum powder with individual layer sheet structure.The method not only efficiency is high, effective, and can not destroy talcous sheet structure; The individual layer platy talc added value of preparation is high, functional good, can under the prerequisite of not losing goods shock strength, toughness and the transparency, significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material, this talcous surface-area is large, active high, in goods, filler can be done in a large number add use, reduce the production cost of its goods, and there is market using value.
Description
Technical field
The present invention relates to Inorganic nonmetal mineral Material Field, be specifically related to a kind of monolithic talcum powder and preparation method thereof.
Background technology
Talcum powder is one of most important inorganic chemical product now.Good, soft, laminate structure, oleophilic drainage the advantage of the chemical stability had due to talcum powder makes talcum powder not only can play the filling of general filler, increment, the effect that reduces costs, and the processing characteristics of these products, physical strength and thermomechanical property can be strengthened, so talcum powder is widely used in the industries such as papermaking, plastics, paint, pottery, makeup, medicine, rubber, agricultural-food, fertilizer by as filler.
According to data, the inorganic materials of individual layer laminate structure is used to do to fill the matrix material that strengthens compared with the matrix material generally using the inorganic materials of non-individual layer laminate structure to do to fill and strengthen, can under the prerequisite of not losing shock strength, toughness and the transparency, significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material, thus, the talcum powder of individual layer laminate structure not only has the more excellent transparency, and significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material.Talcum powder major part in the market has all just carried out simple purification and thinning processing, the talcum powder obtained also is the particulate state of multiple-level stack, although small portion has carried out process of delaminating, but the effect of delaminating is unsatisfactory, there is the shortcoming that the talcous content of individual layer sheet is low and laminate structure is destroyed, cause talcum powder added value of product low, functional difference, at rubber, plastics, loading level in the goods such as papery is little, the mechanical property of goods and processing characteristics will be made to decline if improve talc amount, have impact on the application of talcum powder in high value added product.
China Patent Publication No. CN103665960A discloses a kind of preparation method of superfine talcum powder, and the method carries out miniaturization surface modification to talcum powder utilizing ball mill and properties-correcting agent.
China Patent Publication No. CN102311669A discloses modified talc powder and preparation method thereof.The method utilizes properties-correcting agent, in the mixed device of temperature-controllable height, modification is carried out to talcum powder, the modified talc powder obtained has very high settling volume and lower oil absorbency, can well be dispersed in superpolymer, but owing to not carrying out lift-off processing to talcum powder in the method, the modified talc powder thus obtained is the particulate state talcum powder that lamellar talc powder is stacked into.
China Patent Publication No. CN101678246A discloses the method controlling talcum particles shape, the method is first pulverized in homogenizer by talcum powder, talcum powder is obtained again with ball mill process of carrying out delaminating, the advantage that particle shape is controlled although this talcum powder has, whiteness is high, but because ball mill talcum particles in stripping process is stressed uncontrollable, can damage talcum powder sheet structure, affect talcous functional, and talcum particles also only has part to peel off, efficiency is low, weak effect.
According to above-mentioned, at present in the method for talcous deep processing and modification, do not carry out delaminating treatment process for talcous, although in process of lapping, had talcum powder to carry out part stripping, but have that efficiency is low, weak effect, and the talcum powder of individual layer sheet structure can be subject to the defects such as mechanical force destruction, cause talcum powder added value of product low, functional difference, loading level in the goods such as rubber, plastics, papery is little, when loading level is large, the mechanical property of goods and processing characteristics decline, and have impact on the application of talcum powder in high value added product.
Summary of the invention
For in current talcous deep processing and modification, not to talcous treatment process of delaminating, or had talcum powder to carry out in process of lapping part stripping, but it is low to there is efficiency, weak effect, and the talcum powder of individual layer sheet structure can be subject to defect and the deficiencies such as mechanical force destruction, the present invention proposes and a kind of there is talcum powder of individual layer sheet structure and preparation method thereof, for achieving the above object, talcum powder is first carried out pre-treatment with intercalator by the present invention, talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer, the high temperature and high pressure that recycling bulking machine provides, water molecules is made to force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure.The method not only efficiency is high, effective, and can not destroy talcous sheet structure; The individual layer platy talc added value of preparation is high, functional good, can under the prerequisite of not losing goods shock strength, toughness and the transparency, significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material, this talcous surface-area is large, active high, in goods, use can be added in a large number.
A kind of monolithic talcum powder of the present invention, it is characterized in that described talcum powder is individual layer platy talc, the tetrahedron that namely individual layer platy talc is made up of two-layer Siliciumatom and Sauerstoffatom clips the individual layer sheet structure talcum powder that octahedron that one deck is made up of magnesium atom, Sauerstoffatom and hydroxyl forms.
The concrete preparation process of the talcous preparation method of a kind of monolithic of the present invention is as follows:
1) intercalator of the talcum powder powder of 80-90 weight part, 5-10 weight part, the deionized water of 10-15 weight part are joined in planetary ball mill after mixing, at the temperature of the speed of 400-500r/min, 60-80 degree Celsius, grind 30-60min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the organic group in intercalator that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 120-150 degree Celsius, pressure is 10-15Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 1-3h at the temperature of 80-90 degree Celsius, obtains individual layer platy talc.
In the concrete steps of the talcous preparation method of above-mentioned a kind of monolithic, the talcum powder powder described in step 1) is Magnesium Silicate q-agent content >=95%, and fineness is 600-5000 object stratiform talcum powder powder.
In the concrete steps of the talcous preparation method of above-mentioned a kind of monolithic, the intercalator described in step 1) is one or more in alkyl amino acid, alkyl lactam, alkyl diamine, alkyl alcoholamine, quaternary amine.
In the concrete steps of the talcous preparation method of above-mentioned a kind of monolithic, planetary ball mill described in step 1) utilizes abrasive material and test portion to roll at a high speed in grinding pot, material is produced to strong shear, impacts, rolls the object equipment reaching pulverizing, grinding, dispersion, emulsifying material, primarily of feed portion, discharging portion, rotating part, driving section (step-down gear, small transmission gear, motor, automatically controlled) composition.
In the concrete steps of the talcous preparation method of above-mentioned a kind of monolithic, step 2) described in bulking machine be single screw extruding puffing machine, form primarily of feeder, quality-adjusting device, bypass, Builking cavity, discharging guard shield, base, mair motor and oil gallery.
Talcum powder is first carried out pre-treatment with intercalator by the present invention, utilize the sucking action between positive and negative charge that alkyl group is embedded in the gap of talcum powder laminate structure, play the effect of support large interlamellar spacing, talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer, the high temperature and high pressure that recycling bulking machine provides, makes water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, forms the talcum powder with individual layer sheet structure.The method not only efficiency is high, effective, and can not destroy talcous sheet structure; The individual layer platy talc added value of preparation is high, functional good, can under the prerequisite of not losing goods shock strength, toughness and the transparency, significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material, this talcous surface-area is large, active high, in goods, filler can be done in a large number add use.
The feature that the present invention gives prominence to is:
1, the talcum powder that prepared by the present invention is individual layer platy talc, there is high, functional good, the advantage that transparency is high of added value, when doing filler can under the prerequisite of not losing goods shock strength, toughness and the transparency, significantly can improve tensile strength and tensile modulus, bending strength and the composite bending modulus of matrix material, this talcous surface-area is large, active high, in goods, use can be added in a large number.
2, not only efficiency is high, effective for preparation method of the present invention, and can not destroy talcous sheet structure.
3, production cost of the present invention is low, can increase the addition of filler, effectively reduces the production cost of goods.
4, constant product quality of the present invention, is easy to suitability for industrialized production.
Talcum powder of the present invention and common talcum powder performance comparison:
| Product | Physical aspect | Affect the maximum addition (%) of plastic, transparent degree | Loading level (%) | Effect |
| Common talcum powder | Multilayer chip talcum powder is stacking to be formed | 3-5 | 10-15 | Increase product shock strength, toughness, reduce the production cost of goods |
| Talcum powder of the present invention | Individual layer sheet | 8-12 | 20-35 | Increase product shock strength, toughness, tensile strength, tensile modulus, bending strength, composite bending modulus, reduce the production cost of goods by a relatively large margin |
Accompanying drawing explanation
Fig. 1 is talcum powder Electronic Speculum figure of the present invention.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should be interpreted as scope of the present invention is only limitted to following example.When not departing from aforesaid method thought of the present invention, the various replacement made according to ordinary skill knowledge and customary means or change, all should be within the scope of the present invention.
embodiment 1
1) alkyl amino acid of the talcum powder powder of 80 weight parts, 10 weight parts, the deionized water of 10 weight parts are joined in planetary ball mill after mixing, under the speed, the temperature of 60 degrees Celsius of 400r/min, grind 30min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the alkyl group in alkyl amino acid that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 120 degrees Celsius, pressure is 10Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 1h at the temperature of 80 degrees Celsius, obtains individual layer platy talc.
embodiment 2
1) alkyl lactam of the talcum powder powder of 90 weight parts, 5 weight parts, the deionized water of 15 weight parts are joined in planetary ball mill after mixing, under the speed, the temperature of 80 degrees Celsius of 500r/min, grind 60min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the alkyl group in alkyl lactam that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 150 degrees Celsius, pressure is 15Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 3h at the temperature of 80 degrees Celsius, obtains individual layer platy talc.
embodiment 3
1) alkyl diamine of the talcum powder powder of 80 weight parts, 10 weight parts, the deionized water of 10 weight parts are joined in planetary ball mill after mixing, under the speed, the temperature of 80 degrees Celsius of 450r/min, grind 60min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the alkyl group in alkyl diamine that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 150 degrees Celsius, pressure is 15Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 2h at the temperature of 80 degrees Celsius, obtains individual layer platy talc.
embodiment 4
1) alkyl alcoholamine of the talcum powder powder of 85 weight parts, 8 weight parts, the deionized water of 10 weight parts are joined in planetary ball mill after mixing, under the speed, the temperature of 70 degrees Celsius of 500r/min, grind 50min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the alkyl group in alkyl alcoholamine that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 130 degrees Celsius, pressure is 13Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 3h at the temperature of 90 degrees Celsius, obtains individual layer platy talc.
embodiment 5
1) quaternary amine of the talcum powder powder of 80 weight parts, 10 weight parts, the deionized water of 15 weight parts are joined in planetary ball mill after mixing, under the speed, the temperature of 80 degrees Celsius of 500r/min, grind 30min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the organic group in quaternary amine that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 140 degrees Celsius, pressure is 12Mpa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 3h at the temperature of 90 degrees Celsius, obtains individual layer platy talc.
Claims (1)
1. a monolithic talcum powder, is characterized in that being obtained by following preparation method:
1) intercalator of the talcum powder powder of 80-90 weight part, 5-10 weight part, the deionized water of 10-15 weight part are joined in planetary ball mill after mixing, at the temperature of the speed of 400-500r/min, 60-80 degree Celsius, grind 30-60min carry out pre-treatment, then discharging is stand-by, namely utilize the insertion of the organic group in intercalator that talcum powder spacing is between layers increased, thus make water molecule energy be immersed in talcous interlayer;
2) pretreated talcum powder bulking machine step 1) obtained carries out puffing, swelling temperature is 120-150 degree Celsius, pressure is 10-15MPa, namely the high temperature and high pressure that bulking machine provides is utilized, make water molecules force talcum bisque and layer to be peeled away at the pressure that instant vaporization is formed, form the talcum powder with individual layer sheet structure;
3) by step 2) talcum powder of individual layer sheet structure that obtains carries out dry 1-3h at the temperature of 80-90 degree Celsius, obtains individual layer platy talc;
Wherein said talcum powder powder is Magnesium Silicate q-agent content >=95%, and fineness is 600-5000 object stratiform talcum powder powder; Described intercalator is one or more in alkyl amino acid, alkyl lactam, alkyl diamine, alkyl alcoholamine, quaternary amine; Described bulking machine is single screw extruding puffing machine.
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Effective date of registration: 20160527 Address after: 114200, Anshan, Liaoning province Haicheng city military management area after the village ran 680 force Street Patentee after: Haicheng Xinda Mining Co., Ltd. Address before: Qingyang District of Chengdu City, Sichuan province 610091 Dragon Industrial Port East Road 4 Patentee before: Chengdu Xinkeli Chemical Sci-Tech Co., Ltd. |
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Address after: 114200, Liaoning Province, Haicheng military management area ran Village Patentee after: Liaoning Xinda talc Group Co., Ltd. Address before: 114200, Anshan, Liaoning province Haicheng city military management area after the village ran 680 force Street Patentee before: Haicheng Xinda Mining Co., Ltd. |
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