CN110343336A - A kind of great surface quality polypropylene micro foaming composite material and preparation method thereof - Google Patents
A kind of great surface quality polypropylene micro foaming composite material and preparation method thereof Download PDFInfo
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Abstract
A kind of great surface quality polypropylene micro foaming composite material of the present invention, by weight, including following components: 10~60 parts of copolymer polypropylene acid resin, 10~50 parts of homopolypropylene acid resin, 0~30 part of toughener, 0~30 part of filler, 0.01~10 part of adsorbent, 0.01~10 part of gas barrier agent, 0.05~5 part of foaming agent, 0~4 part of nucleating agent.It regulates and controls dissolution, diffusion, migration of the gas in polymer melt by adsorbent and gas barrier, to reduce migration and diffusion of the gas to polymer surfaces, while guaranteeing composite material physical property and internal gas release, solve the problems, such as the surface defects such as polypropylene expanded product surface air pocket, crazing, so that products surface quality is substantially improved.Meanwhile the present invention also provides a kind of dedicated preparation methods, said components to be prepared into the polypropylene fretting map product with great surface quality.
Description
Technical field
The present invention relates to polypropylene fretting map technical fields, and in particular to a kind of great surface quality polypropylene fretting map is compound
Material and preparation method thereof.
Background technique
PP foam material, using physical foaming technology producing foamed bead, is mainly used to using propylene as primary raw material
Progress mold foaming is various shape and size, for using in different occasions;PP foam material has
The features such as light weight, environmentally protective, good stability of the dimension, heat-insulating sound-insulating, excellent in mechanical performance, it is therefore widely used in vapour
The fields such as vehicle, aerospace, household electrical appliances and packaging.
Currently, existing PP foam material gas in mold filling process is easy to migrate and is diffused into polymer surfaces, make
The foaming quality and products surface quality of PP foam material are bad, the surface defects such as air pocket and crazing often occur, thus
Limit the expansion application of PP foam material.
Summary of the invention
For above-mentioned existing PP foam material, gas is easy to migrate in mold filling process and is diffused into polymer surfaces,
Keep foaming quality and the products surface quality of PP foam material bad, the surface defects such as air pocket and crazing often occurs, from
And the problem of limiting the expansion application of PP foam material, it is multiple that the present invention provides a kind of great surface quality polypropylene fretting map
Condensation material and preparation method thereof
The technical solution adopted by the invention is as follows:
A kind of great surface quality polypropylene micro foaming composite material, by weight, including following components:
10~60 parts of copolymer polypropylene acid resin, 10~50 parts of homopolypropylene acid resin, 0~30 part of toughener, filler 0
~30 parts, 0.01~10 part of adsorbent, 0.01~10 part of gas barrier agent, 0.05~5 part of foaming agent, nucleating agent 0~4
Part.
It further, by weight, further include 0.01~3 part of primary antioxidant, 0.01~3 part of auxiliary antioxidant;It is described
Primary antioxidant and auxiliary antioxidant are antioxidant 1010, irgasfos 168, antioxidant 1076, antioxidant TPL, antioxidant DSTP
It is any one or more of.
It further, by weight, further include resistance to scraping 0.1~4 part of agent;It is described it is resistance to scrape agent be erucyl amide, it is poly-
Siloxanes, oleic acid or stearic acid are any one or more of.
It further, by weight, further include 0.1~3 part of light stabilizer;The light stabilizer be light stabilizer 622,
Light stabilizer 1084, light stabilizer 770, light stabilizer 901 or light stabilizer GW-540 are any one or more of.
Further, the acrylic resin copolymer, under 230 DEG C of temperature, the test condition of ballast 2.16Kg, melting refers to
Number is 1~150g/10min;The homopolypropylene acid resin melts under 230 DEG C of temperature, the test condition of ballast 2.16Kg
Melting index is 0.5~70g/10min.
Further, the toughener is one or both of rubber and thermoplastic elastomer (TPE).
Further, the adsorbent is silicone oil, polyvinyl acetate, appointing in melamine base micropore organic polymer
It is one or more.
Further, the gas barrier agent is ethylene-vinyl alcohol copolymer, nano hydrotalcite, poly terephthalic acid class
Plastics, polyvinylidene chloride, nylon are any one or more of.
Further, the foaming agent is azo-compound, nitroso compound, sulfonyl hydrazines compound, carbonate, carbon
Sour hydrogen salt, nitrite, citric acid or hydride are any one or more of;The dosage form of the foaming agent usually selects particle
Agent.
Further, the nucleating agent is montmorillonite, silica, glucitols, organic phosphate, sodium benzoate or pine
Fragrant class nucleating agent is any one or more of.
Further, the filler is any in talcum powder, calcium carbonate, fiber, white carbon black, wollastonite in powder or ardealite
Kind is a variety of.
Based on above-mentioned polypropylene micro foaming composite material formula, the technical program also provides one kind and is used to prepare the high table
The method of face quality polypropylene micro foaming composite material.
The preparation method specifically includes the following steps:
(1) each raw material component is weighed by formula rate, and remaining raw material components in addition to foaming agent weighed up is mixed
It is even, obtain mixture;
(2) by mixture under conditions of extrusion temperature is 160~210 DEG C, extruding pelletization obtains modified polypropene composite wood
Material;
(3) by weight, 95~99.95 parts of modified polypropylene composite materials are mixed with 0.05~5 part of foaming agent
Even (the two adds up to parts by weight to be 100 parts), obtain foam mixture;
(4) by foam mixture under conditions of injection temperature is 170~210 DEG C, injection molding obtains polypropylene fretting map
Composite material.
In conclusion compared with the prior art, the invention has the advantages that:
(1) in the present invention, regulated and controled by adsorbent and gas barrier dissolution of the gas in polymer melt,
Diffusion, migration;Wherein, adsorbent can increase gas solubility in the polymer and diffusion coefficient, and mitigation of gases
Desorption rate, so that polymer is made to retain higher gas content, meanwhile, gas barrier agent can generate fan in a polymer matrix
It is more tortuous through the path of matrix to make gas for palace, thus the process for hindering gas molecule to pass through to a certain extent;Between the two
Synergistic effect, migration and diffusion of the gas to polymer surfaces can be reduced, while guaranteeing composite inner gas release,
Solve the problems, such as the surface defects such as surface air pocket, the crazing of polypropylene expanded product, so that products surface quality substantially mentions
It rises;
(2) in the present invention, provided composite-material formula system is guaranteeing to obtain compared with the prior art more preferably surface matter
While amount, it still is able to guarantee good physical property, can satisfy practical application request;
(3) present invention in, in micro foaming composite material can also by increase antioxidant, it is resistance to scrape agent, light stabilizer come
Improve the comprehensive tolerance performance of gained composite material;And above-mentioned addition does not cause resulting product surface quality under this system
It influences, to further improve the performance quality of composite material while guaranteeing composite surface quality, expand it
Can application range, extend its service life;
(4) in the present invention, it is formulated provided preparation method for the polypropylene micro foaming composite material, has been selected suitable
The technological parameter condition of each component Function is answered, to further improve the molded surface quality of obtained composite material.
Detailed description of the invention
Fig. 1 is the surface comparison diagram of comparative example and 2 sample of embodiment;
Fig. 2 is the section comparison diagram of comparative example and 2 sample of embodiment.
Wherein, in Fig. 1 and Fig. 2, illustrate the picture of comparative example on a left side, the picture of 2 sample of illustrated embodiment exists
It is right;All pictures are enlarged drawing, and amplification factor is 15 times;The scale bar of all pictures is 1000:1.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below with reference to specific embodiment
The present invention is described in further detail.Meanwhile embodiment shown in the present invention is merely to illustrate, not to of the invention
Range, which is made, to be defined.
Firstly the need of explanation, in the composite-material formula of embodiment and comparative example, copolymer polypropylene used is by swallow
Mountain petrochemical industry provides, trade names K7100.Homopolypropylene is provided by Yangtze petrochemical industry, trade names F401.Toughener POE
It is provided by SK Chemical, South Korea, trade names Solumer8730.The talcum powder that partial size is 1250 mesh is chosen in inorganic filler, by the rising sun
Feng Fenti is provided.Adsorbent chooses polyvinyl acetate.Ethylene-vinyl alcohol copolymer is chosen in gas barrier agent.Nucleating agent
For Sorbitol Nucleator.Primary antioxidant 1010, auxiliary antioxidant 168 and light stabilizer 622 are provided by BASF.The choosing of scratch resistance liniment
Take erucyl amide.It should be understood that the corresponding selected brand of each component and model are not limited to above-mentioned, others have equivalent
Or the material of similar quality can also become the materials selection of each component in illustrated embodiment.
Embodiment 1
By 45.3 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, gas is inhaled
Attached dose 0.1 part, 0.1 part of gas barrier agent, 0.05 part of nucleating agent, 1,010 0.7 parts of primary antioxidant, 1680.7 parts of auxiliary antioxidant,
0.55 part of scratch resistance liniment, mix 3-5min in 0.5 part of investment high-speed mixer of light stabilizer, it is to be mixed uniformly after, by mixture
It is added to melt blending in double screw extruder, extruding pelletization.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained, injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
Embodiment 2
By 45 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, gas absorption
0.2 part of agent, 0.3 part of gas barrier agent, 0.05 part of nucleating agent, 1,010 0.7 parts of primary antioxidant, 168 0.7 parts of auxiliary antioxidant,
0.55 part of scratch resistance liniment, mix 3-5min in 0.5 part of investment high-speed mixer of light stabilizer, it is to be mixed uniformly after, by mixture
It is added to melt blending in double screw extruder, extruding pelletization.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained.Injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
Embodiment 3
By 44.5 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, gas is inhaled
Attached dose 0.4 part, 0.6 part of gas barrier agent, 0.05 part of nucleating agent, 1,010 0.7 parts of primary antioxidant, 1680.7 parts of auxiliary antioxidant,
0.55 part of scratch resistance liniment, mix 3-5min in 0.5 part of investment high-speed mixer of light stabilizer, it is to be mixed uniformly after, by mixture
It is added to melt blending in double screw extruder, extruding pelletization.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained, injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
Embodiment 4
By 44 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, gas absorption
It is 0.5 part of agent, 1 part of gas barrier agent, 0.05 part of nucleating agent, 1,010 0.7 parts of primary antioxidant, 168 0.7 parts of auxiliary antioxidant, resistance to
Scrape 0.55 part of liniment, mix 3-5min in 0.5 part of investment high-speed mixer of light stabilizer, it is to be mixed uniformly after, by mixture plus
Enter into double screw extruder melt blending, extruding pelletization.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained, injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
Embodiment 5
By 43.5 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, gas is inhaled
Attached dose 0.8 part, 1.2 parts of gas barrier agent, 0.05 part of nucleating agent, 1,010 0.7 parts of primary antioxidant, 1680.7 parts of auxiliary antioxidant,
0.55 part of scratch resistance liniment, mix 3-5min in 0.5 part of investment high-speed mixer of light stabilizer, it is to be mixed uniformly after, by mixture
It is added to melt blending in double screw extruder, extruding pelletization.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained, injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
Comparative example
By 45.5 parts of acrylic resin copolymer, 20 parts of homopolypropylene resin, 12 parts of toughener, 20 parts of filler, nucleating agent
0.05 part, 0.7 part of antioxidant 1010,0.7 part of irgasfos 168,0.55 part of scratch resistance liniment, 0.5 part of investment high speed of light stabilizer
Mix 3-5min in mixing machine, it is to be mixed uniformly after, add mixture to melt blending in double screw extruder, extrusion is made
Grain.Extruder barrel temperature setting is 160-210 DEG C.
It is added to injection molding after mixing with 4 parts of chemical foaming agent master batches by 96 parts of modified polypropylene composite material obtained
In machine, using injection molding process, polypropylene micro foaming composite material is obtained, injection molding machine injection temperature is set as 170-210 DEG C.
Gained polypropylene micro foaming composite material the performance test results comparison such as the following table 1.
The test result of embodiment 1-5 and comparative example products obtained therefrom physical properties is listed in Table 1 below.
Polypropylene micro foaming composite material the performance test results made from 1 Examples 1 to 5 of table and comparative example
After Examples 1 to 5 and comparative example being compared it is found that adsorbent and gas barrier is added, polypropylene
Tensile strength and the bending strength variation of micro foaming composite material are little, and notch impact toughness increases.Abscess and surface
Quality with adsorbent and gas barrier addition, the defects of surface gas trace, crazing fewer and fewer (see Fig. 1), abscess
Increasingly even compact (see Fig. 2).The controllable gas of addition of adsorbent and gas barrier is further related in polymer
Intracorporal dissolution, diffusion and migration are melted, migration is reduced and is diffused into the gas of polymer surfaces, to reach improvement foaming product
The purpose of surface quality.In addition, it can also be seen that gained polypropylene fretting map is multiple in embodiment compared to comparative example from Fig. 2
Condensation material, interior abscess is more uniform, and abscess quantity increases, therefore, under the formula system of the technical program, additionally it is possible into
One step improves the uniform in foaming degree (the reason of notch impact toughness improves) of composite material and frothing percentage (further increases compound
The lighting of material and other foaming correlated performances).
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (10)
1. a kind of great surface quality polypropylene micro foaming composite material, which is characterized in that by weight, including following components:
10~60 parts of copolymer polypropylene acid resin, 10~50 parts of homopolypropylene acid resin, 0~30 part of toughener, 0~30 part of filler,
0.01~10 part of adsorbent, 0.01~10 part of gas barrier agent, 0.05~5 part of foaming agent, 0~4 part of nucleating agent.
2. a kind of great surface quality polypropylene micro foaming composite material according to claim 1, it is characterised in that: by weight
Part meter, further includes 0.01~3 part of primary antioxidant, 0.01~3 part of auxiliary antioxidant;The primary antioxidant and auxiliary antioxidant are
Antioxidant 1010, irgasfos 168, antioxidant 1076, antioxidant TPL, antioxidant DSTP are any one or more of.
3. a kind of great surface quality polypropylene micro foaming composite material according to claim 1, it is characterised in that;By weight
Part meter, further includes resistance to scraping 0.1~4 part of agent;It is described it is resistance to scrape agent be erucyl amide, polysiloxanes, oleic acid or stearic acid in
It is any one or more.
4. a kind of great surface quality polypropylene micro foaming composite material according to claim 1, it is characterised in that: by weight
Part meter, further includes 0.1~3 part of light stabilizer;The light stabilizer is light stabilizer 622, light stabilizer 1084, light stabilizer
770, light stabilizer 901 or light stabilizer GW-540 are any one or more of.
5. a kind of great surface quality polypropylene micro foaming composite material according to any one of claims 1 to 4, feature exist
In: the acrylic resin copolymer, under 230 DEG C of temperature, the test condition of ballast 2.16Kg, melt index is 1~150g/
10min;The homopolypropylene acid resin, under 230 DEG C of temperature, the test condition of ballast 2.16Kg, melt index be 0.5~
70g/10min。
6. a kind of great surface quality polypropylene micro foaming composite material according to any one of claims 1 to 4, feature exist
It is that silicone oil, polyvinyl acetate, melamine base micropore organic polymer are any one or more of in: the adsorbent.
7. a kind of great surface quality polypropylene micro foaming composite material according to any one of claims 1 to 4, feature exist
In: the gas barrier agent is ethylene-vinyl alcohol copolymer, nano hydrotalcite, poly terephthalic acid class plastics, gathers inclined two chloroethene
Alkene, nylon are any one or more of.
8. a kind of great surface quality polypropylene micro foaming composite material according to any one of claims 1 to 4, feature exist
In: the foaming agent is azo-compound, nitroso compound, sulfonyl hydrazines compound, carbonate, bicarbonate, nitrous acid
Salt, citric acid or hydride are any one or more of.
9. a kind of great surface quality polypropylene micro foaming composite material according to any one of claims 1 to 4, feature exist
In: the nucleating agent is in montmorillonite, silica, glucitols, organic phosphate, sodium benzoate or rosin nucleating agent
It is any one or more.
10. a kind of side for being used to prepare the great surface quality polypropylene micro foaming composite material as described in any one of claim 1~9
Method, which comprises the following steps:
(1) each raw material component is weighed by formula rate, and remaining raw material components in addition to foaming agent weighed up is uniformly mixed, obtained
Mixture;
(2) by mixture under conditions of extrusion temperature is 160~210 DEG C, extruding pelletization obtains modified polypropylene composite material;
(3) by weight, 95~99.95 parts of modified polypropylene composite materials are uniformly mixed with 0.05~5 part of foaming agent, are obtained
Foam mixture;
(4) by foam mixture under conditions of injection temperature is 170~210 DEG C, it is compound to obtain polypropylene fretting map for injection molding
Material.
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Effective date of registration: 20221114 Address after: 561100 1, Longteng Road, Xia Yun Industrial Park, Pingba District, Anshun, Guizhou Patentee after: KANGMINGYUAN (GUIZHOU) TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 550014 Guizhou Science City, no.3491 Baijin Avenue, Baiyun District, Guiyang City, Guizhou Province Patentee before: GUIZHOU MATERIAL INDUSTRIAL TECHNOLOGY INSTITUTE |