CN110272590A - A kind of polypropylene of low-shrinkage and preparation method thereof - Google Patents
A kind of polypropylene of low-shrinkage and preparation method thereof Download PDFInfo
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- CN110272590A CN110272590A CN201910561743.9A CN201910561743A CN110272590A CN 110272590 A CN110272590 A CN 110272590A CN 201910561743 A CN201910561743 A CN 201910561743A CN 110272590 A CN110272590 A CN 110272590A
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- Prior art keywords
- polypropylene
- modified
- low
- shrinkage
- basalt
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention discloses polypropylene of a kind of low-shrinkage and preparation method thereof, a kind of polypropylene of low-shrinkage, including basalt continuous fiber, polypropylene, auxiliary agent, the basalt continuous fiber is the modified basalt continuous fiber as made from modified size, and the modified size includes the component of following mass percent: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, the modified Nano calcium powder of 3-10%, 30-35% water.A kind of polyacrylic preparation method of low-shrinkage of the present invention is preferentially modified basalt fibre, enhances the adhesive force between basalt fibre and polypropylene, the shrinking percentage of modified polypropylene material can be reduced to 0.5% or so.
Description
Technical field
The present invention relates to a kind of polypropylene and preparation method thereof, and in particular to a kind of polypropylene of low-shrinkage and its preparation
Method.
Background technique
Polypropylene is the highly crystalline polymer of nontoxic, odorless, tasteless milky, and density only has 0.90-0.91g/cm3,
It is one of kind most light in current all plastics.Polypropylene have good heat resistance, product can 100 DEG C of temperatures above into
Row sterilization, under conditions of not by external force, 150 DEG C also indeformable；Polyacrylic chemical stability is fine, and removing can be by dense sulphur
It is all more stable to various other chemical reagent outside acid, concentrated nitric acid corrode.
Since polypropylene (PP) is high crystalline polymer material, in product injection molding, storage and use process often
There are some Shrinkage behaviors, lead to the warpage of product, local internal stress, size is unstable.Pass through Shooting Technique in thin article
Or blending, pp molding shrinkage can be controlled 1% or so, but still have biggish contraction in the preparation of thick product
Rate, glass fibre are filled in the 30% polyacrylic shrinking percentage of thick product 5% or so.
Summary of the invention
The technical problem to be solved by the present invention is to polypropylene biggish shrinking percentage in the preparation of thick product, cause to produce
The warpage of product, local internal stress, size is unstable, and it is an object of the present invention to provide a kind of polypropylene of low-shrinkage, solves polypropylene and exist
There is the problem of biggish shrinking percentage in the preparation of thick product.
The present invention is achieved through the following technical solutions:
A kind of polypropylene of low-shrinkage, including basalt continuous fiber, polypropylene, auxiliary agent, the basalt are continuously fine
Dimension is the modified basalt continuous fiber as made from modified size, and the modified size includes following mass percent
Component: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, 3-10% modified Nano calcium powder, 30-
35% water.
Traditional technology is filled resin using glass fibre, can be effectively reduced the shrinking percentage of resin, but glass
Glass fiber will not generate toxic and harmful gas and waste residue in the production and use process, temperature tolerance, and acid and alkali-resistance is all less excellent
It is different；Present invention utilizes the principles that glass fibre reduces acrylic resin shrinking percentage, using basalt fibre to acrylic resin
It is modified, the performances such as heatproof, the acid and alkali-resistance of acrylic resin composite material can be effectively improved；The present invention passes through to common profound
Military rock fiber is modified, and is increased compatible between the specific surface area and basalt fibre and acrylic resin of basalt fibre
Property, the interfacial adhesion between modified basalt continuous fiber and acrylic resin is effectively improved, can be further decreased
The shrinking percentage of acrylic resin, so that polypropylene can be suitable for the preparation of thick product vertically.The present invention is using modified profound
Military rock continuous fiber is modified polypropylene, can be by polyacrylic contraction compared with conventional fiber glass modified polypropene
Rate further reduces, and makes the production it is suitable for thick product.Basalt continuous fiber is modified basalt in the present invention
Fiber.
The film forming agent be by epoxy monomer in the presence of emulsifier aggregated polymerized emulsion obtained.Cream
The molecular weight of liquid polymer is higher, and relative molecular mass can reach 105More than, there is higher film-strength after film forming；Lotion is one
A aqueous dispersion, form a film it is different from homogeneous organic polymer soln system, be with moisture be vaporized through particle by
Compressive strain and the process merged, therefore there is certain gas permeability.
For the partial size of the polymerized emulsion less than 1 μm, the concentration of polymerized emulsion is 47-51% by weight percentage.This hair
The bright preferably partial size and concentration of polymerized emulsion, reaches optimal filming performance.
Basalt continuous fiber, polyacrylic weight ratio are 30:70.The present invention preferred basalt continuous fiber, poly- third
The optimum proportioning of alkene.
The auxiliary agent includes the component of following parts by weight: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic acid connect
Branch copolymaleic anhydride, 3 parts of lubricants.The present invention joined auxiliary agent in basalt continuous fiber and polypropylene, and auxiliary agent can
The interfacial adhesion between basalt continuous fiber and polypropylene is effectively improved, the modified polypropylene of basalt continuous fiber is shunk
Rate is lower, and it is higher to draw high intensity, also has the performances such as good heatproof, corrosion-resistant, wear-resisting.
The coupling agent is KH-570 silane coupling agent.
The modified size includes the component of following mass percent: 46% film forming agent, 10% coupling agent, 3%
Lubricant, 7% modified Nano calcium powder, 32% water.The preferred optimum proportioning of each component of the present invention.
A kind of polyacrylic preparation method of low-shrinkage, comprising the following steps:
S1, modified basalt continuous fiber is made by modified size, the modified size includes following quality hundred
The component of score: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, 3-10% modified Nano calcium powder,
The water of 30-35%；
The chopped yarn of treated basalt fiber is made by fibre chopping machine in S2, modified basalt continuous fiber；
S3, the mixing of polypropylene and auxiliary agent is added in pelletizer from main feeding, treated basalt fiber is chopped yarn from side
Feeding is added in pelletizer, by extruding pelletization after conveying, melting, mixing, exhaust and homogenizing, obtains treated basalt fiber increasing
Strong polypropylene granules；The chopped yarn of treated basalt fiber and polyacrylic weight ratio are as follows: 30:70；The auxiliary agent includes following heavy
Measure the component of number: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants；
S4, treated basalt fiber reinforced polypropylene pellet obtain the polypropylene of low-shrinkage by injection molding.
The present invention is preferentially modified basalt fibre, enhances the adhesive force between basalt fibre and polypropylene,
The shrinking percentage of modified polypropylene material can be reduced to 0.5% or so.
Lubricant described in step S1 is feature of environmental protection lubricant.Feature of environmental protection lubricant is environment friendly and pollution-free.
Compared with prior art, the present invention having the following advantages and benefits:
1, a kind of polypropylene of low-shrinkage of the present invention is modified to obtain by basalt continuous fiber to polypropylene, with
Conventional fiber glass modified polypropene is compared, and can further reduce polyacrylic shrinking percentage, makes that it is suitable for thick products
Production；
2, a kind of polypropylene of low-shrinkage of the present invention draws high intensity height, also has good heatproof, corrosion-resistant, wear-resisting etc.
Performance；
3, a kind of polyacrylic preparation method of low-shrinkage of the present invention is preferentially modified basalt fibre, enhances
The shrinking percentage of modified polypropylene material can be reduced to 0.5% left side by the adhesive force between basalt fibre and polypropylene
It is right.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment, the present invention is made
Further to be described in detail, exemplary embodiment of the invention and its explanation for explaining only the invention, are not intended as to this
The restriction of invention.
Embodiment 1
A kind of polypropylene of low-shrinkage of the present invention, including basalt continuous fiber, polypropylene, auxiliary agent, the basalt
Continuous fiber is the modified basalt continuous fiber as made from modified size, and the modified size includes following quality hundred
The component of score: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, 3-10% modified Nano calcium powder,
The water of 30-35%.The auxiliary agent includes the component of following parts by weight: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of propylene
Sour graft copolymerization maleic anhydride, 3 parts of lubricants.The coupling agent is KH-570 silane coupling agent.The film forming agent is by epoxy
Resin monomer aggregated polymerized emulsion obtained in the presence of emulsifier.The partial size of the polymerized emulsion gathers less than 1 μm
The concentration for closing lotion is 47-51% by weight percentage.Basalt continuous fiber, polyacrylic weight ratio are 30:70.Auxiliary agent
The lubricant of use is preferably Indonesia EBS lubricant B50.
Traditional technology is filled resin using glass fibre, can be effectively reduced the shrinking percentage of resin, but glass
Glass fiber will not generate toxic and harmful gas and waste residue in the production and use process, temperature tolerance, and acid and alkali-resistance is all less excellent
It is different；Present invention utilizes the principles that glass fibre reduces acrylic resin shrinking percentage, using basalt fibre to acrylic resin
It is modified, the performances such as heatproof, the acid and alkali-resistance of acrylic resin composite material can be effectively improved；The present invention passes through to common profound
Military rock fiber is modified, and is increased compatible between the specific surface area and basalt fibre and acrylic resin of basalt fibre
Property, the interfacial adhesion between modified basalt continuous fiber and acrylic resin is effectively improved, can be further decreased
The shrinking percentage of acrylic resin, so that polypropylene can be suitable for the preparation of thick product vertically.The present invention is using modified profound
Military rock continuous fiber is modified polypropylene, can be by polyacrylic contraction compared with conventional fiber glass modified polypropene
Rate further reduces, and makes the production it is suitable for thick product.Basalt continuous fiber is modified basalt in the present invention
Fiber.The present invention joined auxiliary agent in basalt continuous fiber and polypropylene, and it is continuously fine that auxiliary agent can effectively improve basalt
Tie up the interfacial adhesion between polypropylene, the modified polypropylene shrinking percentage of basalt continuous fiber is lower, and it is higher to draw high intensity,
Also there are the performances such as good heatproof, corrosion-resistant, wear-resisting.The molecular weight of emulsion polymer is higher, and relative molecular mass can reach
105More than, there is higher film-strength after film forming；Lotion is an aqueous dispersion, is formed a film molten with homogeneous organic polymer
Liquid system is different, is the process that merges with being vaporized through particle compressive deformation of moisture, therefore have certain gas permeability.
The preferred partial size and concentration of polymerized emulsion of the present invention, reaches optimal filming performance.
Embodiment 2
Based on embodiment 1, a kind of polyacrylic preparation method of low-shrinkage of the present invention, comprising the following steps:
S1, modified basalt continuous fiber is made by modified size, the modified size includes following quality hundred
The component of score: 44% film forming agent, 8% coupling agent, 2% lubricant, 3% modified Nano calcium powder, 30% water；
The chopped yarn of treated basalt fiber is made by fibre chopping machine in S2, modified basalt continuous fiber；
S3, the mixing of polypropylene and auxiliary agent is added in pelletizer from main feeding, treated basalt fiber is chopped yarn from side
Feeding is added in pelletizer, by extruding pelletization after conveying, melting, mixing, exhaust and homogenizing, obtains treated basalt fiber increasing
Strong polypropylene granules；The chopped yarn of treated basalt fiber and polyacrylic weight ratio are as follows: 30:70；The auxiliary agent includes following heavy
Measure the component of number: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants；
S4, treated basalt fiber reinforced polypropylene pellet obtain the polypropylene of low-shrinkage by injection molding.
The present invention is preferentially modified basalt fibre, enhances the adhesive force between basalt fibre and polypropylene,
The shrinking percentage of modified polypropylene material can be reduced to 0.5% or so.
Lubricant described in step S1 is feature of environmental protection lubricant, and the lubricant that auxiliary agent uses in step S3 is preferably Indonesia
EBS lubricant B50.Feature of environmental protection lubricant is environment friendly and pollution-free.
Embodiment 3
Based on embodiment 1, a kind of polyacrylic preparation method of low-shrinkage of the present invention, comprising the following steps:
S1, modified basalt continuous fiber is made by modified size, the modified size includes following quality hundred
The component of score: 52% film forming agent, 12% coupling agent, 4% lubricant, 10% modified Nano calcium powder, 35% water；
The chopped yarn of treated basalt fiber is made by fibre chopping machine in S2, modified basalt continuous fiber；
S3, the mixing of polypropylene and auxiliary agent is added in pelletizer from main feeding, treated basalt fiber is chopped yarn from side
Feeding is added in pelletizer, by extruding pelletization after conveying, melting, mixing, exhaust and homogenizing, obtains treated basalt fiber increasing
Strong polypropylene granules；The chopped yarn of treated basalt fiber and polyacrylic weight ratio are as follows: 30:70；The auxiliary agent includes following heavy
Measure the component of number: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants；
S4, treated basalt fiber reinforced polypropylene pellet obtain the polypropylene of low-shrinkage by injection molding.
The present invention is preferentially modified basalt fibre, enhances the adhesive force between basalt fibre and polypropylene,
The shrinking percentage of modified polypropylene material can be reduced to 0.5% or so.
Lubricant described in step S1 is feature of environmental protection lubricant, and the lubricant that auxiliary agent uses in step S3 is preferably Indonesia
EBS lubricant B50.Feature of environmental protection lubricant is environment friendly and pollution-free.
Embodiment 4
Based on embodiment 1, a kind of polyacrylic preparation method of low-shrinkage of the present invention, comprising the following steps:
S1, modified basalt continuous fiber is made by modified size, the modified size includes following quality hundred
The component of score: 46% film forming agent, 10% coupling agent, 3% lubricant, 7% modified Nano calcium powder, 32% water；
The chopped yarn of treated basalt fiber is made by fibre chopping machine in S2, modified basalt continuous fiber；
S3, the mixing of polypropylene and auxiliary agent is added in pelletizer from main feeding, treated basalt fiber is chopped yarn from side
Feeding is added in pelletizer, by extruding pelletization after conveying, melting, mixing, exhaust and homogenizing, obtains treated basalt fiber increasing
Strong polypropylene granules；The chopped yarn of treated basalt fiber and polyacrylic weight ratio are as follows: 30:70；The auxiliary agent includes following heavy
Measure the component of number: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants；
S4, treated basalt fiber reinforced polypropylene pellet obtain the polypropylene of low-shrinkage by injection molding.
The present invention is preferentially modified basalt fibre, enhances the adhesive force between basalt fibre and polypropylene,
The shrinking percentage of modified polypropylene material can be reduced to 0.5% or so.
Lubricant described in step S1 is feature of environmental protection lubricant, and the lubricant that auxiliary agent uses in step S3 is preferably Indonesia
EBS lubricant B50.Feature of environmental protection lubricant is environment friendly and pollution-free.
Embodiment 5
As a comparison with virgin pp, glass fiber reinforced polypropylene, the present embodiment is to low receipts obtained in embodiment 2-4
The polypropylene of shrinkage has carried out performance detection, testing result such as table 1.Virgin pp is the polypropylene for being not added with fiber.
The Properties of Polypropylene of 1 low-shrinkage of table detects
Compared with virgin pp and the modified polypropylene of glass fibre, the present invention has significant progress, can not only
The shrinking percentage of oligomerisation of propene can also be improved into polyacrylic comprehensive performance, in conjunction with polyacrylic comprehensive performance and material cost,
Embodiment 4 is optimal preparation method.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of polypropylene of low-shrinkage, including basalt continuous fiber, polypropylene, auxiliary agent, which is characterized in that the Black Warrior
Rock continuous fiber is the modified basalt continuous fiber as made from modified size, and the modified size includes following quality
The component of percentage: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, 3-10% modified Nano calcium
The water of powder, 30-35%.
2. a kind of polypropylene of low-shrinkage according to claim 1, which is characterized in that the film forming agent is by asphalt mixtures modified by epoxy resin
Alicyclic monomer aggregated polymerized emulsion obtained in the presence of emulsifier.
3. a kind of polypropylene of low-shrinkage according to claim 2, which is characterized in that the partial size of the polymerized emulsion is small
In 1 μm, the concentration of polymerized emulsion is 47-51% by weight percentage.
4. a kind of polypropylene of low-shrinkage according to claim 1, which is characterized in that basalt continuous fiber, poly- third
The weight ratio of alkene is 30:70.
5. a kind of polypropylene of low-shrinkage according to claim 1, which is characterized in that the auxiliary agent includes following weight
The component of number: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants.
6. a kind of polypropylene of low-shrinkage according to claim 1, which is characterized in that the coupling agent is KH-570 silicon
Alkane coupling agent.
7. a kind of polypropylene of low-shrinkage according to claim 1, which is characterized in that the modified size include with
The component of lower mass percent: 46% film forming agent, 10% coupling agent, 3% lubricant, 7% modified Nano calcium powder,
32% water.
8. a kind of polyacrylic preparation method of low-shrinkage described in any one of -7 claims according to claim 1,
Characterized by comprising the following steps:
S1, modified basalt continuous fiber is made by modified size, the modified size includes following mass percent
Component: the film forming agent of 44-52%, the coupling agent of 8-12%, the lubricant of 2-4%, 3-10% modified Nano calcium powder, 30-
35% water；
The chopped yarn of treated basalt fiber is made by fibre chopping machine in S2, modified basalt continuous fiber；
S3, the mixing of polypropylene and auxiliary agent is added in pelletizer from main feeding, treated basalt fiber is chopped yarn from side feed material
It is added in pelletizer, by extruding pelletization after conveying, melting, mixing, exhaust and homogenizing, it is poly- to obtain treated basalt fiber enhancing
Propylene pellet；The chopped yarn of treated basalt fiber and polyacrylic weight ratio are as follows: 30:70；The auxiliary agent includes following parts by weight
Several component: 3 parts of antioxidant 1010s, 3 parts of irgasfos 168s, 6 parts of acrylic graft copolymer maleic anhydrides, 3 parts of lubricants；
S4, treated basalt fiber reinforced polypropylene pellet obtain the polypropylene of low-shrinkage by injection molding.
9. a kind of polyacrylic preparation method of low-shrinkage according to claim 8, which is characterized in that institute in step S1
The lubricant stated is feature of environmental protection lubricant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910561743.9A CN110272590A (en) | 2019-06-26 | 2019-06-26 | A kind of polypropylene of low-shrinkage and preparation method thereof |
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| CN201910561743.9A CN110272590A (en) | 2019-06-26 | 2019-06-26 | A kind of polypropylene of low-shrinkage and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333891A (en) * | 2020-04-29 | 2020-06-26 | 界首市宏利塑料有限公司 | Preparation method of high-strength PP tearing film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850650A (en) * | 2012-09-04 | 2013-01-02 | 江苏兆鋆新材料科技有限公司 | Basalt fiber reinforced polypropylene composite material and preparation method thereof |
| CN104926158A (en) * | 2015-06-30 | 2015-09-23 | 四川航天五源复合材料有限公司 | Nano modified soaking agent used for basalt fiber |
| CN108751748A (en) * | 2018-05-28 | 2018-11-06 | 宁波东邦新材料有限公司 | A kind of basalt chopped fiber size |
| CN109535548A (en) * | 2018-10-31 | 2019-03-29 | 重庆工商大学 | A kind of basalt fibre reinforced polypropylene compound material and preparation method thereof |
-
2019
- 2019-06-26 CN CN201910561743.9A patent/CN110272590A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850650A (en) * | 2012-09-04 | 2013-01-02 | 江苏兆鋆新材料科技有限公司 | Basalt fiber reinforced polypropylene composite material and preparation method thereof |
| CN104926158A (en) * | 2015-06-30 | 2015-09-23 | 四川航天五源复合材料有限公司 | Nano modified soaking agent used for basalt fiber |
| CN108751748A (en) * | 2018-05-28 | 2018-11-06 | 宁波东邦新材料有限公司 | A kind of basalt chopped fiber size |
| CN109535548A (en) * | 2018-10-31 | 2019-03-29 | 重庆工商大学 | A kind of basalt fibre reinforced polypropylene compound material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333891A (en) * | 2020-04-29 | 2020-06-26 | 界首市宏利塑料有限公司 | Preparation method of high-strength PP tearing film |
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