CN105111379A - Method for melt grafting of polypropylene plastic alloy - Google Patents
Method for melt grafting of polypropylene plastic alloy Download PDFInfo
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- CN105111379A CN105111379A CN201510564134.0A CN201510564134A CN105111379A CN 105111379 A CN105111379 A CN 105111379A CN 201510564134 A CN201510564134 A CN 201510564134A CN 105111379 A CN105111379 A CN 105111379A
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- fusion
- grafting
- polypropylene
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- acrylic plastering
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Abstract
The invention discloses a method for melt grafting of a polypropylene plastic alloy. The method comprises the following steps: blending raw materials, performing melt grafting, and purifying grafted polypropylene (PP). According to the method disclosed by the invention, by performing graft modification on the PP, the compatibility of the PP with other polymers is improved, and various defects of the PP caused by non-polar macromolecules are overcome, so that the dyeing property, the adhesive property, the antistatic property and the mechanical properties of the PP are improved. The interfacial affinity between a PP non-polar polymer and polar glass fibers is improved, maleic anhydride (MAH) is grafted to the PP at first to ensure that the PP carries polar groups and forms a grafting material PP-g-MAH, then the grafting material is used as a third component added into a polypropylene/glass fiber (PP/GF) composite system, and a test finds out that the addition of the grafting material improves the bending strength of a belt material.
Description
Technical field
The invention belongs to technical field of polymer materials, particularly a kind of fusion-grafting method of acrylic plastering alloy.
Background technology
PP plastic material, chemical name: polypropylene, feature: density is little, intensity and toughness, hardness thermotolerance is all better than low pressure polyethylene, can about 100 degree uses.There is good electrical property and high-frequency insulation not by humidity effect, but become fragile during low temperature, not wear-resisting, easily aging.Be suitable for making common mechanical part, corrosion-resistant part and insulating part.
Polypropylene, English name: Polypropylene (PP), japanese name: Port リ プ ロ ピ レ Application, molecular formula: (C
3h
6) n.CAS accession number: 9003-07-0 is a kind of thermoplastic resin obtained by propylene polymerization.Isotatic polypropylene (isotacticpolypropylene), Atactic Polypropelene (atacticpolypropylene) and syndiotactic polypropylene (syndiotacticpolypropylene) three kinds is divided into by methyl arrangement position.
In five large general-purpose plastics, polypropylene (PP), though developing history is short, is one with fastest developing speed.Compared with other general-purpose plastics, PP has good over-all properties, and such as: relative density is little, have good thermotolerance, Vicat softening point is higher than HDPE and ABS, and processing characteristics is excellent; Mechanical property is as all higher in yield strength, tensile strength and Young's modulus, rigidity and wear-resisting all more excellent; Have less dielectric constant, electrical insulating property is good, proof stress be full of cracks and chemical resistance better etc.In addition, PP abundant raw material source, cheap, and along with the appearance of efficient catalyst, production technique constantly simplifies, and cost constantly reduces, and these are all subject to people's favor, be widely used in the industries such as chemical industry, electrical equipment, automobile, building, packaging, and expanded to the Application Areas of the materials such as coating, tackiness agent, ink, plastics, fiber and other thermoplastics, engineering plastics and even metal.
But because PP molding shrinkage is large, fragility is high, notched Izod impact strength is low, particularly particularly serious when low temperature, which greatly limits the promotion and application of PP.In order to overcome these shortcomings, from eighties of last century seventies, special large quantity research is carried out to PP modification both at home and abroad, and done a lot of work, particularly in the notched Izod impact strength improving PP and low-temperature flexibility, become emphasis and the focus of research both at home and abroad at present.Polypropylene modification method mainly contains plasma surface modification, additive modification, blending and modifying, filling-modified and nano-material modified etc.Blended and modified polypropylene fiber is by adding second component and isotatic polypropylene co-blended spinning, obtained modified polypropylene fiber.The advantage of the comprehensive multiple material of blending modification method, makes polyacrylic performance more outstanding, has greatly widened the Application Areas of polypropylene fibre.
Summary of the invention
Goal of the invention: a kind of fusion-grafting method that the invention provides acrylic plastering alloy, to solve the problems of the prior art.
Technical scheme: to achieve these goals, the present invention by the following technical solutions:
A fusion-grafting method for acrylic plastering alloy, comprises the following steps:
Step one, raw material are blended, take polypropylene and maleic anhydride mixing, then insert and carry out blended in plasticizing instrument, obtain mixture;
Step 2, fusion-grafting: fusion-grafting in Banbury mixer is inserted in mixture gradation step one obtained, and obtains product;
The polypropylene purifying of step 3, grafting: product step 2 obtained adopts refluxing xylene to dissolve, after adopting funnel to filter while hot, then purifies with methanol extraction, will precipitate drying, and obtain final product.
Further, in described step one, the blended time is 3-5min, and blended rotating speed is 50-60r/min, and blended temperature is 180-200 DEG C.
Further, in described step 2, the speed that mixture step one obtained inserts Banbury mixer is 2-3min/ time, 30-80ml/ time.
Further, in described step 2, fusion-grafting mixing time under 50-60r/min is 10-15min.
Further, in described step 3, adopt glass sand core funnel.
Further, in described step 3, under being deposited in the condition of vacuum, be placed in 60-80 DEG C of drying.
Further, in described step 3, product step 2 obtained adopts refluxing xylene to dissolve, after adopting funnel to filter while hot, again by the process that methanol extraction is purified, at least in triplicate, until weight difference < 0.01g after drying precipitate.
Beneficial effect: the present invention, by carrying out graft modification to PP, improves the consistency of PP and other polymkeric substance, and the many disadvantages changing that PP brings because macromole is nonpolar, make its dyeability, cementability, static resistance and mechanical property etc. improve.Improve PP non-polar polymer and Polar Glass interfibrous interface avidity, first maleic anhydride (MAH) is grafted on PP, make PP with polar group, form grafts PP-g-MAH, then join in polypropylene/glass fiber (PP/GF) compound system using this grafts as three components, what find grafts after tested adds the flexural strength that improve band.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Grafting is that molecular chain incompatible with each other is connected together on side shoot, and form a kind of new polymers, this polymkeric substance has the over-all properties of the homopolymer of two kinds of chains usually.
Embodiment 1
A fusion-grafting method for acrylic plastering alloy, comprises the following steps:
Step one, raw material are blended, and take polypropylene and maleic anhydride mixing, then insert temperature 180 DEG C in plasticizing instrument, under rotating speed 60r/min, blended 3min, obtains mixture;
Step 2, fusion-grafting: mixture step one obtained is with 3min/ time, and the speed of 30ml/ time to insert in Banbury mixer the mixing 10min of fusion-grafting under 60r/min, obtains product;
The polypropylene purifying of step 3, grafting: product step 2 obtained adopts refluxing xylene to dissolve, after adopting glass sand core funnel to filter while hot, purify with methanol extraction again, under being deposited in the condition of vacuum, be placed in 80 DEG C of dryings, repeat to adopt refluxing xylene to dissolve, after filtration, the process of deposition and purification 3 times, until the weight difference < 0.01g after drying precipitate will precipitate drying, will obtain final product.
Embodiment 2
A fusion-grafting method for acrylic plastering alloy, comprises the following steps:
Step one, raw material are blended, and take polypropylene and maleic anhydride mixing, then insert temperature 190 DEG C in plasticizing instrument, under rotating speed 55r/min, blended 45min, obtains mixture;
Step 2, fusion-grafting: mixture step one obtained is with 3min/ time, and the speed of 50ml/ time to insert in Banbury mixer the mixing 13min of fusion-grafting under 55r/min, obtains product;
The polypropylene purifying of step 3, grafting: product step 2 obtained adopts refluxing xylene to dissolve, after adopting glass sand core funnel to filter while hot, purify with methanol extraction again, under being deposited in the condition of vacuum, be placed in 70 DEG C of dryings, repeat to adopt refluxing xylene to dissolve, after filtration, the process of deposition and purification 4 times, until the weight difference < 0.01g after drying precipitate will precipitate drying, will obtain final product.
Embodiment 3
A fusion-grafting method for acrylic plastering alloy, comprises the following steps:
Step one, raw material are blended, and take polypropylene and maleic anhydride mixing, then insert temperature 200 DEG C in plasticizing instrument, under rotating speed 50r/min, blended 5min, obtains mixture;
Step 2, fusion-grafting: mixture step one obtained is with 2min/ time, and the speed of 80ml/ time to insert in Banbury mixer the mixing 15min of fusion-grafting under 50r/min, obtains product;
The polypropylene purifying of step 3, grafting: product step 2 obtained adopts refluxing xylene to dissolve, after adopting glass sand core funnel to filter while hot, purify with methanol extraction again, under being deposited in the condition of vacuum, be placed in 60 DEG C of dryings, repeat to adopt refluxing xylene to dissolve, after filtration, the process of deposition and purification 5 times, until the weight difference < 0.01g after drying precipitate will precipitate drying, will obtain final product.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a fusion-grafting method for acrylic plastering alloy, is characterized in that, comprise the following steps:
Step one, raw material are blended, take polypropylene and maleic anhydride mixing, then insert and carry out blended in plasticizing instrument, obtain mixture;
Step 2, fusion-grafting: fusion-grafting in Banbury mixer is inserted in mixture gradation step one obtained, and obtains product;
The polypropylene purifying of step 3, grafting: product step 2 obtained adopts refluxing xylene to dissolve, after adopting funnel to filter while hot, then purifies with methanol extraction, will precipitate drying, and obtain final product.
2. the fusion-grafting method of acrylic plastering alloy according to claim 1, it is characterized in that: in described step one, the blended time is 3-5min, blended rotating speed is 50-60r/min, and blended temperature is 180-200 DEG C.
3. the fusion-grafting method of acrylic plastering alloy according to claim 1, is characterized in that: in described step 2, and the speed that mixture step one obtained inserts Banbury mixer is 2-3min/ time, 30-80ml/ time.
4. the fusion-grafting method of acrylic plastering alloy according to claim 1, is characterized in that: in described step 2, and fusion-grafting mixing time under 50-60r/min is 10-15min.
5. the fusion-grafting method of acrylic plastering alloy according to claim 1, is characterized in that: in described step 3, adopts glass sand core funnel.
6. the fusion-grafting method of acrylic plastering alloy according to claim 1, is characterized in that: in described step 3, under being deposited in the condition of vacuum, is placed in 60-80 DEG C of drying.
7. the fusion-grafting method of acrylic plastering alloy according to claim 1, it is characterized in that: in described step 3, product step 2 obtained adopts refluxing xylene to dissolve, after adopting funnel to filter while hot, again by the process that methanol extraction is purified, at least in triplicate, until weight difference < 0.01g after drying precipitate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564134.0A CN105111379A (en) | 2015-09-08 | 2015-09-08 | Method for melt grafting of polypropylene plastic alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564134.0A CN105111379A (en) | 2015-09-08 | 2015-09-08 | Method for melt grafting of polypropylene plastic alloy |
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| CN105111379A true CN105111379A (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510564134.0A Pending CN105111379A (en) | 2015-09-08 | 2015-09-08 | Method for melt grafting of polypropylene plastic alloy |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161702A (en) * | 1994-08-25 | 1997-10-08 | 伊斯曼化学公司 | Polypropylene(maleated) of high acid-number, high molecular wt. and low color type |
-
2015
- 2015-09-08 CN CN201510564134.0A patent/CN105111379A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161702A (en) * | 1994-08-25 | 1997-10-08 | 伊斯曼化学公司 | Polypropylene(maleated) of high acid-number, high molecular wt. and low color type |
Non-Patent Citations (4)
| Title |
|---|
| 俞强等: ""聚丙烯反应性挤出接枝马来酸酐的研究"", 《江苏石油化工学院学报》 * |
| 刘学习等: ""PP-g-Si与PP-g-MAH对PP/GF的增容机理比较"", 《高分子材料科学与工程》 * |
| 杨学稳等: ""马来酸酐熔融接枝聚丙烯性能的研究"", 《化学工业与工程》 * |
| 魏无际等: ""聚丙烯熔融接枝马来酸酐的研究"", 《现代塑料加工应用》 * |
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Application publication date: 20151202 |