CN104562256A - Spinning-type polypropylene breaking elongation rate improving agent and preparation method thereof - Google Patents
Spinning-type polypropylene breaking elongation rate improving agent and preparation method thereof Download PDFInfo
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- CN104562256A CN104562256A CN201410857020.0A CN201410857020A CN104562256A CN 104562256 A CN104562256 A CN 104562256A CN 201410857020 A CN201410857020 A CN 201410857020A CN 104562256 A CN104562256 A CN 104562256A
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Abstract
The embodiment of the invention discloses a spinning-type polypropylene breaking elongation rate improving agent. The spinning-type polypropylene breaking elongation rate improving agent comprises the following components in percentage by mass: 70 to 95 percent of a toughening agent, 0.2 to 20 percent of a nucleating agent and 0.5 to 10 percent of a stabilizing agent, preferably, 82 percent of the toughening agent, 15 percent of the nucleating agent and 3 percent of the stabilizing agent. The toughening agent is calcium carbonate. The nucleating agent is a dicarboxylic acid metal salt. The embodiment of the invention further discloses a preparation method for the spinning-type polypropylene breaking elongation rate improving agent. The spinning-type polypropylene breaking elongation rate improving agent is obtained by mixing the raw materials according to the proportions in a high-speed dispersing machine at a high speed. By adopting the spinning-type polypropylene breaking elongation rate improving agent, the breaking elongation rate of spinning-type polypropylene can be improved very well; the product quality is greatly improved.
Description
Technical field
The present invention relates to a kind of filature-type polypropylene field, particularly relate to a kind of filature-type polypropylene elongation at break improving agent and preparation method thereof.
Background technology
Filature-type polypropylene has been widely used in producing polypropylene plastics woven bag, nonwoven fabric.Be exclusively used in the polypropylene producing woven bag, nonwoven fabric at present, mainly homo-polypropylene, in order to reach the spray silk requirement of woven bag spinning requirement or nonwoven fabric, the melt index of raw material requires higher, producing in the synthesis technique of this raw material, in order to heighten raw materials melt index, employing peroxide as chain-breaker, reduce molecular weight to reach the melt index improving raw material, the elongation at break of constitutive material reduces greatly for this reason.When producing nonwoven fabric, for improving feel and reducing costs, often add the calcium carbonate of more than 25%, elongation at break becomes only has tens percent, has a strong impact on product quality.Elongation at break is too low, and spinning is easily broken and caused production stopping accident in braiding process, has a strong impact on production.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of filature-type polypropylene elongation at break improving agent, well can improve the polyacrylic elongation at break of spinning class, greatly improve the quality of product.
In order to solve the problems of the technologies described above, embodiments provide a kind of filature-type polypropylene elongation at break improving agent, calculate according to mass percent, comprising following component:
Flexibilizer 70 ~ 95%, nucleator 0.2 ~ 20%, stabilizing agent 0.5 ~ 10%.
For the improvement of technique scheme, described flexibilizer 82%, nucleator 15%, stabilizing agent 3%.
For the further improvement of technique scheme, described flexibilizer is calcium carbonate.
For the further improvement of technique scheme, described nucleator is dicarboxylic acid metal salts.
For the further improvement of technique scheme, described dicarboxylic acid metal salts comprises dicarboxylic acids sodium salt and dicarboxylic acids zinc salt.
For the further improvement of technique scheme, described stabilizing agent is Metallic stearates.
For the further improvement of technique scheme, described Metallic stearates comprises stearic acid sodium salt and stearic acid zinc salt.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of filature-type polypropylene elongation at break improving agent, comprises the following steps:
Raw material is dropped into high speed dispersor high speed according to proportioning mix.
For the improvement of technique scheme, the rotating speed of described high speed dispersor is 500 ~ 800 revs/min.
For the further improvement of technique scheme, mixture after mixed at high speed is added mixed at high speed 2 ~ 10min again after polypropylene mixing, then make filature-type polypropylene elongation at break improving agent master batch by double screw extruder granulation, wherein the effective content of filature-type polypropylene elongation at break improving agent is mass percent 5.2%.
Implement the embodiment of the present invention, there is following beneficial effect:
Filature-type polypropylene elongation at break improving agent of the present invention selects excellent flexibilizer, the agent of beta crystal core and stabilizing agent as raw material, wherein the agent of beta crystal core can change the Crystal type of filature-type polypropylene material, thus improve the ductility of spinning material, also just substantially increase the polyacrylic elongation at break of filature-type.
Detailed description of the invention
Describe the present invention in detail below in conjunction with specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment 1:
Filature-type polypropylene elongation at break improving agent of the present invention, calculates according to mass percent, comprises following component:
Flexibilizer 82%, beta crystal-type nucleater 15%, stabilizing agent 3%.
Wherein, described flexibilizer is calcium carbonate, and beta crystal-type nucleater is dicarboxylic acids sodium salt, and stabilizing agent is stearic acid zinc salt, and this stearic acid zinc salt also serves as the effect of acid-acceptor and lubricant.
The preparation method of filature-type polypropylene elongation at break improving agent of the present invention, concrete steps are as follows:
Dropped in high speed dispersor according to proportioning by above raw material and carry out mixed at high speed, the slewing rate of described high speed dispersor is 600 revs/min.
Due to the filature-type polypropylene elongation at break improving agent prepared in actual use, be added into the ratio row prepared in filature-type pp material extremely little, if directly added, then can cause the skewness of filature-type polypropylene elongation at break improving agent in polypropylene, finally well can not play the effect promoting filature-type polypropylene elongation at break, therefore, more than after mixing, need be added in polypropylene and be mixed, then spun polypropylene elongation at break improving agent master batch is made by double screw extruder granulation, wherein the effective content of filature-type polypropylene elongation at break improving agent accounts for the mass percent of whole master batch is 5.2%.
Embodiment 2:
The present embodiment and embodiment 1 difference are only: in described filature-type polypropylene elongation at break improving agent, the proportioning of each component changes to some extent, and the slewing rate of preparation method's high speed dispersion machine of described filature-type polypropylene elongation at break improving agent is 800 revs/min simultaneously.
Wherein, in filature-type polypropylene elongation at break improving agent, the proportioning of each component is specially: flexibilizer 90%, beta crystal-type nucleater 5%, stabilizing agent 5%.Wherein, described flexibilizer is calcium carbonate, and beta crystal-type nucleater is dicarboxylic acids zinc salt, and stabilizing agent is stearic acid sodium salt, and this stearic acid sodium salt also serves as the effect of acid-acceptor and lubricant.
Embodiment 3:
The present embodiment and embodiment 1 difference are only: in described filature-type polypropylene elongation at break improving agent, the proportioning of each component changes to some extent, and the slewing rate of preparation method's high speed dispersion machine of described filature-type polypropylene elongation at break improving agent is 500 revs/min simultaneously.
Wherein, in filature-type polypropylene elongation at break improving agent, the proportioning of each component is specially: flexibilizer 70%, beta crystal-type nucleater 20%, stabilizing agent 10%.Wherein, described flexibilizer is calcium carbonate, and beta crystal-type nucleater is dicarboxylic acids zinc salt, and stabilizing agent is stearic acid sodium salt, and the difficult salt of this stearic acid also serves as the effect of acid-acceptor and lubricant.
Embodiment 4:
The present embodiment and embodiment 1 difference are only: in described filature-type polypropylene elongation at break improving agent, the proportioning of each component changes to some extent, and the slewing rate of preparation method's high speed dispersion machine of described filature-type polypropylene elongation at break improving agent is 700 revs/min simultaneously.
Wherein, in filature-type polypropylene elongation at break improving agent, the proportioning of each component is specially: flexibilizer 80%, beta crystal-type nucleater 12%, stabilizing agent 8%.Wherein, described flexibilizer is calcium carbonate, and beta crystal-type nucleater is dicarboxylic acids zinc salt, and stabilizing agent is stearic acid zinc salt, and this stearic acid zinc salt also serves as the effect of acid-acceptor and lubricant.
In order to better illustrate that the polyacrylic elongation at break of filature-type adopting filature-type polypropylene elongation at break improving agent of the present invention to prepare is greatly enhanced, be then enough to illustrate by following experimental data:
Experiment 1: this experiment is that the spun polypropylene elongation at break improving agent master batch proportioning of embodiment 1 prepared adds in plain polypropylene X30G, be then that 20mm/min tests on tensile testing machine by draw speed, concrete data see the following form one:
Table one
Known by the experimental data of above table one, owing to not adding filature-type polypropylene elongation at break improving agent of the present invention in the 1st group, its elongation at break is only 482%, but can find out in 2-7 group experimental data, after adding filature-type polypropylene elongation at break improving agent, TENSILE STRENGTH, draw high yield strength and tensile modulus of elasticity does not all have too large change, but elongation at break is but up to more than 855%, or even 1100%, after that is to say that explanation adds filature-type polypropylene elongation at break improving agent, elongation at break improves about 2 times, for the performance of plain polypropylene X30G, be significantly increased.
Experiment 2: this experiment is the spun polypropylene elongation at break improving agent master batch that the proportioning adding embodiment 1 in the compound of wire drawing material Z30S, calcium carbonate and peroxide is made, then granulation and injection moulding model bar is carried out, tensile testing machine is that 20mm/min tests by draw speed, and experimental data is as following table two:
Table two
Known by the experimental data of above table two, in the 1st group, both do not added filature-type polypropylene elongation at break improving agent of the present invention, also do not add peroxide and calcium carbonate, its elongation at break is only 854.47%; With the addition of peroxide in 2nd group, but do not add calcium carbonate and filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is 645.87%; Both with the addition of peroxide in 3-5 group, and also with the addition of calcium carbonate, but do not added filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is only about 100%; In the 6th group, with the addition of peroxide, do not add calcium carbonate, but with the addition of filature-type polypropylene elongation at break improving agent of the present invention, its fracture productivity ratio is up to 959.41%; Namely with the addition of peroxide in 7-9 group, also with the addition of calcium carbonate, also added filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is also only about 200%.Simultaneously, it can also be seen that from the experimental data of table two, wherein in 9 groups of data, TENSILE STRENGTH, tensile yield strength and tensile modulus of elasticity all do not have too large change, but by the 2nd group compared with the 6th group, do not add filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is 645.87%, and the then elongation at break that with the addition of is 959.41%, then elongation at break improves 1/3; By 2-5 group compared with 7-8 group data, with the addition of filature-type polypropylene elongation at break improving agent of the present invention, elongation at break improves 61.28% ~ 200%, so, be enough to show from above data, adopt filature-type polypropylene elongation at break improving agent of the present invention, for wire drawing material Z3OS, its elongation at break improves greatly.
Experiment 3: this experiment is the spun polypropylene elongation at break improving agent master batch that the proportioning adding embodiment 2 in the compound of wire drawing material Z30S and peroxide is made, then granulation and injection moulding model bar is carried out, tensile testing machine is that 20mm/min tests by draw speed, (wherein wire drawing grade polypropylene Z30S is usually used in producing PP nonwoven fabric, because melt index is too low, after hot melt, mobility is inadequate, is generally to improve mobility by adding peroxide master batch) experimental data is as following table three:
Table three
Known by the experimental data of above table two, in the 1st group, do not add filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is only 706%; Both do not add peroxide in 5th group, also do not add filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is only 488%.Peroxide is with the addition of in 2-4 group, also with the addition of filature-type polypropylene elongation at break improving agent of the present invention, its elongation at break is 840 ~ 1100%, so, be enough to show from above data, adopt filature-type polypropylene elongation at break improving agent of the present invention, for wire drawing material Z3OS, its elongation at break improves greatly.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, detailed description of the invention and range of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a filature-type polypropylene elongation at break improving agent, is characterized in that, calculates, comprise following component according to mass percent:
Flexibilizer 70 ~ 95%, beta crystal-type nucleater 0.2 ~ 20%, stabilizing agent 0.5 ~ 10%.
2. filature-type polypropylene elongation at break improving agent according to claim 1, is characterized in that, calculates, comprise following component according to mass percent:
Flexibilizer 82%, beta crystal-type nucleater 15%, stabilizing agent 3%.
3. filature-type polypropylene elongation at break improving agent according to claim 1 and 2, is characterized in that:
Described flexibilizer is calcium carbonate.
4. filature-type polypropylene elongation at break improving agent according to claim 1 and 2, is characterized in that:
Described nucleator is dicarboxylic acid metal salts.
5. filature-type polypropylene elongation at break improving agent according to claim 4, is characterized in that:
Described dicarboxylic acid metal salts comprises dicarboxylic acids sodium salt and dicarboxylic acids zinc salt
Filature-type polypropylene elongation at break improving agent according to claim 1 and 2, is characterized in that:
Described stabilizing agent is Metallic stearates.
6. filature-type polypropylene elongation at break improving agent according to claim 6, is characterized in that:
Described Metallic stearates comprises stearic acid sodium salt and stearic acid zinc salt.
7. a preparation method for the filature-type polypropylene elongation at break improving agent according to claim 1-7 any one, is characterized in that, comprise the following steps:
Raw material is dropped into high speed dispersor high speed according to proportioning mix.
8. the preparation method of filature-type polypropylene elongation at break improving agent according to claim 8, is characterized in that:
The rotating speed of described high speed dispersor is 500 ~ 800 revs/min.
9. the preparation method of filature-type polypropylene elongation at break improving agent according to claim 8, is characterized in that:
Mixture after mixed at high speed is added mixed at high speed 2 ~ 10min again after polypropylene mixing, then make filature-type polypropylene elongation at break improving agent master batch by double screw extruder granulation, wherein the effective content of filature-type polypropylene elongation at break improving agent is mass percent 5.2%.
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| CN113430714A (en) * | 2021-06-08 | 2021-09-24 | 南通大学 | Beta-crystal polypropylene anti-aging geotextile and preparation method thereof |
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