CN104744730B - Modified kaolin, its preparation method and modified PVC composition - Google Patents
Modified kaolin, its preparation method and modified PVC composition Download PDFInfo
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- CN104744730B CN104744730B CN201510164447.7A CN201510164447A CN104744730B CN 104744730 B CN104744730 B CN 104744730B CN 201510164447 A CN201510164447 A CN 201510164447A CN 104744730 B CN104744730 B CN 104744730B
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Abstract
The present invention relates to a kind of modified kaolin its preparation method and modified PVC composition, kaolin of the invention includes following components：Kaolin, LNBR, hydroxyethyl methacrylate and dibenzoyl peroxide.Compared with prior art, modified kaolin produced by the present invention can be good at being wrapped up by LNBR, has good lipophile, has good compatibility with PVC, in the PVC profile that can preferably disperse.The modified PVC section bar made from modified PVC composition, there is good tensile property, and shock resistance, its tensile strength and impact strength, better than with the addition of unmodified kaolinic PVC profile.
Description
Technical field
The invention belongs to Modification of kaolin field, and in particular to a kind of LNBR (liquid
Acrylonitrile-butadiene rubber, LNBR) modified kaolin and preparation method thereof；It is additionally related to a kind of anti-
Rush PVC and preparation method thereof.
Background technology
Kaolin is a kind of important nonmetal mineral resource, and kaolin has that whiteness is high, matter is soft, easily scattered is suspended in water
In, good plasticity and caking property, electrical insulation capability is strong；Good antiacid dissolubility, stronger ionic adsorption and ion are handed over
The performance such as transsexual and good agglutinating property and higher refractoriness.So kaolin is widely used as gum filler, plastics are filled out
Material, paint filler etc., to improve its chemical stability and mechanical property, however, the hydrophily of kaolin surface make its rubber,
It can not disperse well in the lipophile medium such as plastics, therefore, for changing for the chemical stabilities such as rubber, plastics and mechanical property
Enter limited.
The content of the invention
In view of this, it is to be necessary to provide a kind of lipophile stronger, can be preferably dispersed in the matrixes such as rubber, plastics,
To improve the modified kaolin of mechanical performance.
A kind of preparation method of the modified kaolin is provided in addition, there is a need to.
In addition, the present invention also provides a kind of modified PVC composition for adding the modified kaolin.
A kind of modified kaolin, including following components：Kaolin, LNBR, hydroxyethyl methacrylate and
Dibenzoyl peroxide.
Preferably, the modified kaolin is made up of the component of following parts by weight：
Preferably, the modified kaolin is made up of the component of following parts by weight：100 parts by weight kaolin clay, 10 parts by weight
LNBR, 10 weight parts of methacrylic acid hydroxyl ethyl esters, 1 parts by weight dibenzoyl peroxide.
Preferably, the modified kaolin is prepared by following steps：
1) LNBR and hydroxyethyl methacrylate are added in Horizontal type helical ribbon mixer, in 70-90 DEG C of progress
Mixing, discharging, is transferred in taper spiral ribbon mixer；
2) kaolin, dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide is with the side of spray
Formula is fed；Mixing temperature is 70-80 DEG C；
3) enter in micropulverizer and stir, discharge, pack.
A kind of preparation method of modified kaolin, it comprises the following steps：
1) LNBR and hydroxyethyl methacrylate are added in Horizontal type helical ribbon mixer, in 70-90 DEG C of progress
Mixing, discharging, is transferred in taper spiral ribbon mixer；
2) kaolin, dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide is with the side of spray
Formula is fed；Mixing temperature is 70-80 DEG C；
3) enter in micropulverizer and stir, discharge, pack.
Preferably, in step 3), the stir speed (S.S.) of the micropulverizer is 20,000 revs/min.
The application of kind modified kaolin, the modified kaolin are used for modified PVC section bar mechanical property.
Preferably, when the dosage of modified kaolin is 5-10%, PVC improvement performance is optimal.
A kind of modified PVC composition, it is made up of the component of following parts by weight：
Preferably, the parts by weight of the modified kaolin are 5-10 parts.
Preferably, the modified kaolin is above-mentioned modified kaolin.
Compared with prior art, the invention has the advantages that：
1) modified kaolin produced by the present invention can be good at being wrapped up by LNBR, have good lipophile, have with PVC
There is good compatibility, in the PVC profile that can preferably disperse.
2) modified PVC section bar made from modified PVC composition is used, there is good tensile property, and shock resistance, its
Tensile strength and impact strength, better than with the addition of unmodified kaolinic PVC profile.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment, but embodiments of the present invention are unlimited
In this, for especially not dated technological parameter, routine techniques progress can refer to.
A kind of modified kaolin, the modified kaolin are made up of the component of following parts by weight：
In the preferred embodiment, the modified kaolin is by 100 parts by weight kaolin clay, 10 part by weight of liquid fourths
Nitrile rubber, 10 weight parts of methacrylic acid hydroxyl ethyl esters, 1 parts by weight dibenzoyl peroxide composition.
The preparation method of above-mentioned modified kaolin, comprises the following steps：
1) by LNBR (liquid acrylonitrile-butadiene rubber, LNBR) and methyl-prop
Olefin(e) acid hydroxyl ethyl ester is added in Horizontal type helical ribbon mixer, is mixed in 70-90 DEG C, is discharged, is transferred in taper spiral ribbon mixer；
2) kaolin, dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide is with the side of spray
Formula is fed；Mixing temperature is 70-80 DEG C；
3) enter in micropulverizer and stir, discharge, pack.
In the preferred embodiment, in step 3), the stir speed (S.S.) of the micropulverizer is 20,000 revs/min.
In the preparation method of modified kaolin of the present invention, in step 3), LNBR acts in the high speed shear of micropulverizer
Uniformly it is distributed in kaolin powder down, is coated on kaolinic surface, obtaining Surface coating has LNBR modified kaolin.
Above-mentioned modified kaolin test：Sink and float method and activation index method
Sink and float method is a kind of rule of thumb test to kaolin surface modified effect, and its mechanism is unmodified kaolin
Density ratio water is big, and surface is polarity, and meeting nature sinks in water, and surface-modified kaolin is dredged from the hydrophilic and oleophobic oleophylic that is changed into
Water, because the powerful surface tension of water forces its floating in water, therefore its sink-float situation in water can be observed and to modification
Effect is evaluated.Specific method is that modified kaolin powder is statically placed in water surface observation, and the modified effect to sink rapidly is worst,
It is statically placed in that the effect of the water surface is placed in the middle, heavy modified effect is not best yet for any stirring.
Activation index method is also based on this principle, it be with the mass fraction H for the modified kaolin for swimming in the water surface come
Represent.The quality of H=floating fractions/sample gross mass, H values are that the bigger modified effect of 0~1, H values is better.
The obtained modified kaolin of the present invention, after being placed in water, arbitrarily stirs all without sinking, measures its activation and refer to
Number is 80-90%.
The modified kaolin of the present invention has Surface coating effect good, and lipophile is strong, has good reinforcement effect to PVC
Fruit, it can preferably improve PVC impact resistance.
A kind of modified PVC composition, it is made up of the component of following parts by weight：
The ACR (Acrylic copolymer) is the acrylic acid esters co-polymer with core-shell structure, is a kind of comprehensive
Close the PVC impact modifiers of function admirable.Purchased from Weihai Jin Hong groups, model 401, molecular weight 80-100 ten thousand, volatile matter ＜
1%.
Preferably, the parts by weight of the modified kaolin are 5-10 parts.
A kind of preparation method of anti-impact PVC profile, it comprises the following steps：
1) each component material is weighed by said ratio, all components is added in mixer, be well mixed；
2) plastics double screw extruder is added mixture into, finished product, 150-170 DEG C of extrusion temperature is made in extrusion.
Modified PVC section bar produced by the present invention, has good tensile property, and a shock resistance, its tensile strength and
Impact strength, better than with the addition of unmodified kaolinic pvc pipe.
Embodiment 1~4
A kind of preparation method of modified kaolin, it comprises the following steps (following number is parts by weight)：
1) 10 parts of LNBRs and 10 parts of hydroxyethyl methacrylates are added in Horizontal type helical ribbon mixer, in 70 DEG C
Mixed, discharge, be transferred in taper spiral ribbon mixer；
2) 100 parts of kaolin, 1 part of dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide
Fed in a manner of spraying；Mixing temperature is 80 DEG C；
3) enter in micropulverizer and stir, discharge, pack；The stir speed (S.S.) of the micropulverizer is 20,000 revs/min
Clock.
Tested through sink and float method and activation index method：The modified kaolin, after being placed in water, any stirring all without
Sink, measure its activation index as 85.6%.
A kind of preparation method of anti-impact PVC profile, it comprises the following steps：
The comparative example 1-5 of table 1 and embodiment 1-4 each components proportioning
1) each component material is weighed by the proportioning of table 1, all components is added in mixer, be well mixed；
2) plastics double screw extruder is added mixture into, finished product, 160 DEG C of extrusion temperature is made in extrusion.
Above-mentioned comparative example X, comparative example 1-4 and PVC profile made from embodiment 1-4 carry out tensile property and (adopted
Tested with GB/T13525-1992), notch impact strength (being tested using GB/T8814-2004) and non-notch impact
Intensity (uses ISO197:2000 are tested), as a result such as table 2：
The mechanical performance data of the PVC profile of table 2
As known from Table 2, modified kaolin is more preferable to the improvement of the mechanical property of PVC profile than unmodified kaolin.
Embodiment 5~8
A kind of preparation method of modified kaolin, it comprises the following steps (following number is parts by weight)：
1) 12 parts of LNBRs and 9 parts of hydroxyethyl methacrylates are added in Horizontal type helical ribbon mixer, in 90 DEG C
Mixed, discharge, be transferred in taper spiral ribbon mixer；
2) 100 parts of kaolin, 1.5 parts of dibenzoyl peroxides (BPO) are added, are stirred；The diphenyl peroxide first
Acyl is fed in a manner of spraying；Mixing temperature is 70 DEG C；
3) enter in micropulverizer and stir, discharge, pack；The stir speed (S.S.) of the micropulverizer is 20,000 revs/min
Clock.
Tested through sink and float method and activation index method：The modified kaolin, after being placed in water, any stirring all without
Sink, measure its activation index as 72%.
A kind of preparation method of anti-impact PVC profile, it comprises the following steps：
The proportioning of the embodiment 5-8 each components of table 3
1) each component material is weighed by the proportioning of table 3, all components is added in mixer, be well mixed；
2) plastics double screw extruder is added mixture into, finished product, 160 DEG C of extrusion temperature is made in extrusion.
PVC profile made from above-described embodiment 5-8 is carried out tensile property (being tested using GB/T13525-1992), lacked
Mouth impact strength (being tested using GB/T8814-2004) and unnotched impact strength (use ISO197:2000 are surveyed
Examination), as a result such as table 4：
The mechanical performance data of the PVC profile of table 4
Embodiment 9~12
A kind of preparation method of modified kaolin, it comprises the following steps (following number is parts by weight)：
1) 11 parts of LNBRs and 15.6 parts of hydroxyethyl methacrylates are added in Horizontal type helical ribbon mixer, in 90
DEG C mixed, discharge, be transferred in taper spiral ribbon mixer；
2) 100 parts of kaolin, 1.2 parts of dibenzoyl peroxides (BPO) are added, are stirred；The diphenyl peroxide first
Acyl is fed in a manner of spraying；Mixing temperature is 75 DEG C；
3) enter in micropulverizer and stir, discharge, pack；The stir speed (S.S.) of the micropulverizer is 20,000 revs/min
Clock.
Tested through sink and float method and activation index method：The modified kaolin, after being placed in water, any stirring all without
Sink, measure its activation index as 71%.
A kind of preparation method of anti-impact PVC profile, it comprises the following steps：
The proportioning of the embodiment 9-12 each components of table 5
1) each component material is weighed by the proportioning of table 5, all components is added in mixer, be well mixed；
2) plastics double screw extruder is added mixture into, finished product, 150 DEG C of extrusion temperature is made in extrusion.
Made from above-described embodiment 9-12 PVC profile carry out tensile property (being tested using GB/T13525-1992),
Notch impact strength (being tested using GB/T8814-2004) and unnotched impact strength (use ISO197:2000 are surveyed
Examination), as a result such as table 6：
The mechanical performance data of the PVC profile of table 6
Embodiment 13~16
A kind of preparation method of modified kaolin, it comprises the following steps (following number is parts by weight)：
1) 11.5 parts of LNBRs and 12 parts of hydroxyethyl methacrylates are added in Horizontal type helical ribbon mixer, in 90
DEG C mixed, discharge, be transferred in taper spiral ribbon mixer；
2) 100 parts of kaolin, 1.2 parts of dibenzoyl peroxides (BPO) are added, are stirred；The diphenyl peroxide first
Acyl is fed in a manner of spraying；Mixing temperature is 78 DEG C；
3) enter in micropulverizer and stir, discharge, pack；The stir speed (S.S.) of the micropulverizer is 20,000 revs/min
Clock.
Tested through sink and float method and activation index method：The modified kaolin, after being placed in water, any stirring all without
Sink, measure its activation index as 69%.
A kind of preparation method of anti-impact PVC profile, it comprises the following steps：
The proportioning of the embodiment 13-16 each components of table 7
1) each component material is weighed by the proportioning of table 7, all components is added in mixer, be well mixed；
2) plastics double screw extruder is added mixture into, finished product, 160 DEG C of extrusion temperature is made in extrusion.
Made from above-described embodiment 13-16 PVC profile carry out tensile property (being tested using GB/T13525-1992),
Notch impact strength (being tested using GB/T8814-2004) and unnotched impact strength (use ISO197:2000 are surveyed
Examination), as a result such as table 8：
The mechanical performance data of the PVC profile of table 8
The invention is not limited in above-mentioned embodiment, if the various changes or deformation to the present invention do not depart from the present invention
Spirit and scope, if these changes and deformation belong within the scope of the claim or equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and deformation.
Claims (7)
1. a kind of modified kaolin, it is characterised in that the modified kaolin includes following components：Kaolin, nitrile (HTBN) rubber
Glue, hydroxyethyl methacrylate and dibenzoyl peroxide；
The modified kaolin is prepared by following steps：
1) LNBR and hydroxyethyl methacrylate are added in Horizontal type helical ribbon mixer, mixed in 70-90 DEG C,
Discharging, is transferred in taper spiral ribbon mixer；
2) kaolin, dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide is entered in a manner of spraying
Material；Mixing temperature is 70-80 DEG C；
3) enter in micropulverizer and stir, discharge, pack.
2. modified kaolin according to claim 1, it is characterised in that the modified kaolin by following parts by weight group
It is grouped into：
3. modified kaolin according to claim 2, it is characterised in that the modified kaolin by following parts by weight group
It is grouped into：100 parts by weight kaolin clay, 10 part by weight of liquid nitrile rubbers, 10 weight parts of methacrylic acid hydroxyl ethyl esters, 1 parts by weight
Dibenzoyl peroxide.
4. a kind of preparation method of modified kaolin, it is characterised in that comprise the following steps：
1) LNBR and hydroxyethyl methacrylate are added in Horizontal type helical ribbon mixer, mixed in 70-90 DEG C,
Discharging, is transferred in taper spiral ribbon mixer；
2) kaolin, dibenzoyl peroxide (BPO) are added, is stirred；The dibenzoyl peroxide is entered in a manner of spraying
Material；Mixing temperature is 70-80 DEG C；
3) enter in micropulverizer and stir, discharge, pack.
5. the preparation method of modified kaolin according to claim 4, it is characterised in that in step 3), the miniature powder
The stir speed (S.S.) of broken machine is 20,000 revs/min.
6. a kind of modified PVC composition, it is characterised in that be made up of the component of following parts by weight：
The modified kaolin is the modified kaolin described in claim 1-3 any one.
7. modified PVC composition according to claim 6, it is characterised in that the parts by weight of the modified kaolinite are 5-
10 parts.
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| CN201510164447.7A CN104744730B (en) | 2015-04-08 | 2015-04-08 | Modified kaolin, its preparation method and modified PVC composition |
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| CN201510164447.7A CN104744730B (en) | 2015-04-08 | 2015-04-08 | Modified kaolin, its preparation method and modified PVC composition |
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| CN106046628A (en) * | 2016-08-17 | 2016-10-26 | 阮丽丽 | Flame-retarding cable material based on modified bentonite and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272511A (en) * | 2000-05-10 | 2000-11-08 | 刘伯元 | Filling modifying agent of plastic product and its preparation method |
| CN1340564A (en) * | 2000-08-24 | 2002-03-20 | 黄锐 | Process for preparing nm-class particles toughened and reinforced polyvinyl chloride composite material |
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2015
- 2015-04-08 CN CN201510164447.7A patent/CN104744730B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272511A (en) * | 2000-05-10 | 2000-11-08 | 刘伯元 | Filling modifying agent of plastic product and its preparation method |
| CN1340564A (en) * | 2000-08-24 | 2002-03-20 | 黄锐 | Process for preparing nm-class particles toughened and reinforced polyvinyl chloride composite material |
Non-Patent Citations (3)
| Title |
|---|
| 无机粒子/PVC复合材料的制备及其耐老化性能;刘祝凯;《中国优秀硕士学位论文全文数据库.工程科技Ⅰ辑》;20110915(第9期);第31-32、37页 * |
| 硬质PVC低温增韧改性的研究;郭峰;《中国优秀硕士学位论文全文数据库.工程科技Ⅰ辑》;20150115(第1期);第68页 * |
| 耐热抗冲PVC复合材料的制备、结构与性能;刘海;《中国博士学问论文全文数据库.工程科技Ⅰ辑》;20130415(第4期);第46-48页 * |
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