CN109294053A - Polypropylene inhibits master batch and its preparation method and application with VOC - Google Patents
Polypropylene inhibits master batch and its preparation method and application with VOC Download PDFInfo
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- CN109294053A CN109294053A CN201710607248.8A CN201710607248A CN109294053A CN 109294053 A CN109294053 A CN 109294053A CN 201710607248 A CN201710607248 A CN 201710607248A CN 109294053 A CN109294053 A CN 109294053A
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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Abstract
The invention belongs to plastic applications, specifically provides a kind of polypropylene VOC and inhibit master batch and its preparation method and application.It includes the following components being blended: acrylic resin, octaphenyl silsesquioxane and antioxidant that polypropylene VOC, which inhibits master batch,；The acrylic resin is 50~90 parts by weight, and octaphenyl silsesquioxane is 10~50 parts by weight, and the total amount of the acrylic resin and octaphenyl silsesquioxane is 100 parts by weight.The generation of VOC in polypropylene material can be effectively suppressed with VOC inhibition master batch using polypropylene of the invention, low VOC polypropylene composition is made, and the polypropylene inhibits the preparation process and being added in acrylic resin of master batch to reduce the simple and reliable process of primary resin VOC with VOC, input cost is lower.
Description
Technical field
The present invention relates to plastic applications, and in particular, to a kind of polypropylene VOC inhibition master batch, the polypropylene are pressed down with VOC
The preparation method of master batch processed and the polypropylene inhibit the application of master batch with VOC.
Background technique
Polypropylene (PP) is widely used to because it has many advantages, such as high comprehensive performance, from a wealth of sources and of high quality and at a reasonable price
The every field of people's life.But existing polypropylene material and product all exist discharges volatile organic matter to some extent
(VOC) the problem of polluting environment and endangering people's health, which greatly limits polypropylene materials in environmental protection
The application in the fields such as more demanding superior automobile inside gadget, medical and packaging material for food.Therefore, research and development environment-friendly type is low
VOC acrylic resin and material can expand the application field of PP and meet the requirement of green material.
Currently, the report about the research of low VOC polypropylene material mostly uses greatly chemical reaction, physical absorption and melt de-
That waves technology to improve VOC in original polypropylene material distributes problem.As CN101570612A is urged by adding a kind of inorganic light
Agent decomposes small organic molecule to reduce VOC content, but complicated components, and effect is also limited.CN101255252A is by being added with
Machine object expellent (such as isopropanol/water) reduces the VOC of material, but there are compatibilities and persistent problem for this mode.
EP1988122A1 uses metallocene polypropylene resins to prepare the automotive interior material of low VOC for matrix resin；EP 2154190A1
The PP composite material of low VOC content is prepared using specific light stabilizer (such as light stabilizer 119)；CN101691435A
Copolymer polypropylene is produced by using specific hydrogen-regulating method to produce the PP composite material of low VOC.Foregoing invention often only
Some factor for the problem that generating VOC is improved, and can not solve the VOC of various factors generation simultaneously.
Physical absorption can adsorb the PP all small molecules generated, and addition physical absorbent is common method.Such as
CN1727389A and CN1727390A disclose use Kiselgel A and molecular sieve as adsorbent reduce the smell of material and
The volatilization problems of organic compound, CN102276921A, which is disclosed, uses plant fiber as adsorbent to reduce polypropylene material
Smell.Although the aforementioned method using adsorbent can play a role to polypropylene VOC is reduced, absorption is still remained
The problem of balance, balances at a higher temperature to the movement of the direction of desorption, causes there are the polypropylene material VOC later periods to release again
The hidden danger put.In addition, the adsorption efficiency of adsorbent, itself and polyacrylic compatibility and adsorbent are in polypropylene matrix
The problems such as dispersion, still remains.Therefore, it is still necessary to the polypropylene resin composite with low VOC content of research newly.
Summary of the invention
In order to solve above-mentioned technical problem of the existing technology, the present invention provides a kind of polypropylene VOC to inhibit female
Grain, polypropylene VOC inhibit the preparation method of master batch and the application of polypropylene VOC inhibition master batch.
According to the first aspect of the invention, the present invention provides a kind of polypropylene with VOC inhibit master batch, comprising blending with
Lower component: acrylic resin, octaphenyl silsesquioxane and antioxidant；Wherein, the acrylic resin is 50~90 parts by weight,
Octaphenyl silsesquioxane is 10~50 parts by weight, and the total amount of the acrylic resin and octaphenyl silsesquioxane is 100
Parts by weight.
According to the second aspect of the invention, the present invention provides the polypropylene preparation method of VOC inhibition master batch, packets
It includes: by the acrylic resin, octaphenyl silsesquioxane and antioxidant melt blending and extruding pelletization, the polypropylene is made
Inhibit master batch with VOC.
According to the third aspect of the invention we, the present invention provides polypropylene VOC, and master batch to be inhibited to reduce polypropylene
Application on VOC, the application include: that master batch will be inhibited to exist comprising polypropylene, acid absorbent, antioxidant and the polypropylene VOC
Interior each component carries out melt blending, obtains low VOC polypropylene composition；It is described relative to the polypropylene of 100 parts by weight
It is 0.5~10 parts by weight that polypropylene VOC, which inhibits master batch,.
The generation that VOC in polypropylene material can be effectively suppressed with VOC inhibition master batch using polypropylene of the invention, preferred
Embodiment in, total volatile organism (TVOC) content in polypropylene material can be made lower than 50 μ gC/g, be made low
VOC polypropylene composition.And the polypropylene inhibits the preparation process of master batch and is added in acrylic resin to drop with VOC
The simple and reliable process of low primary resin VOC, input cost is lower, can be widely applied to the higher superior automobile interior trim of environmental requirement
The fields such as part, medical and packaging material for food.
Specific embodiment
Specific embodiments of the present invention will be described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
According to the first aspect of the invention, the present invention provides a kind of polypropylene VOC to inhibit master batch, which uses
It includes the following components being blended: acrylic resin, octaphenyl silsesquioxane and antioxidant that VOC, which inhibits master batch,；Wherein, described poly-
Allyl resin is 50~90 parts by weight, and octaphenyl silsesquioxane is 10~50 parts by weight, and the acrylic resin and eight benzene
The total amount of base silsesquioxane is 100 parts by weight.
Inhibit in master batch in polypropylene VOC, melt index of the acrylic resin at 230 DEG C, 2.16kg
It can be 3-30g/10min, preferably 3-10g/10min.
In the present invention, the octaphenyl silsesquioxane has following cage structure:
The octaphenyl silsesquioxane (also referred to as " octaphenyl cagelike silsesquioxane ") thermal stability with higher,
Inventor it has been investigated that, which does not generate VOC additionally during processing, use and storage, the eight of cagelike structure
A top has nonpolar phenyl ring and polypropylene to have preferable compatibility, and nanometer cagelike structure can effectively adsorb small molecule hydro carbons
VOC；And the octaphenyl silsesquioxane energy nano-dispersed can efficiently inhibit or slow down polypropylene in PP matrix
Middle VOC's distributes, and reduces VOC total amount in polypropylene.
The octaphenyl silsesquioxane can be commercially available, and due to the limitation of existing preparation method, commercially available is described
Often contain other impurity in octaphenyl silsesquioxane, is preferably selected from N2Thermal degradation temperature (5wt% weight damage under ambient conditions
Lose) it is higher than 440 DEG C of octaphenyl silsesquioxane, such as the octaphenyl silsesquioxane of Hybridplastic company of the U.S.
MS0840。
Inhibit in master batch in polypropylene VOC, the dosage of the antioxidant is routine when preparing polypropylene agglomerate
Selection.By the total amount of the acrylic resin and octaphenyl silsesquioxane be 100 parts by weight in terms of, the antioxidant can be
0.01~1 parts by weight, preferably 0.1~0.5 parts by weight.
In addition, the antioxidant can be selected from Hinered phenols antioxidant and/or phosphoric acid ester antioxidant.The Hinered phenols are anti-
Oxygen agent is preferably selected from four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters (antioxidant 1010), β-(3,5-
Di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester (antioxidant 1076), N, N'- is bis--(3- (3,5- di-t-butyl -4-
Hydroxy phenyl) propiono) hexamethylene diamine (antioxidant 1098) and 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) isocyanuric acid
At least one of (antioxidant 3114).
The phosphoric acid ester antioxidant be preferably selected from three (2,4- di-tert-butylphenol) phosphite esters (irgasfos 168) and/or
Bis- (2,4- DI-tert-butylphenol compounds) pentaerythritol diphosphites (antioxidant 626).
Under preferable case, the antioxidant be Hinered phenols antioxidant and phosphoric acid ester antioxidant mixture, it is described by
The weight ratio for hindering phenolic antioxidant and phosphoric acid ester antioxidant is 1 ︰ (1~8), preferably 1 ︰ (1~6), more preferably 1 ︰ (1~
4)。
According to the second aspect of the invention, the present invention provides the polypropylene preparation method of VOC inhibition master batch, packets
It includes: by the acrylic resin, octaphenyl silsesquioxane and antioxidant melt blending and extruding pelletization, the polypropylene is made
Inhibit master batch with VOC.
In one embodiment, prepare the polypropylene VOC inhibit master batch method the following steps are included:
(1) each component including dried acrylic resin and octaphenyl silsesquioxane, antioxidant is pressed into institute
It needs content to be fully mixed in mixing apparatus uniformly, obtains mixture；
(2) mixture is passed through into blended melting equipment melt blending, after extruding pelletization, can be prepared by the polypropylene
Inhibit master batch with VOC.
In the preparation method, various mixing equipments used in the prior art are can be used in the mixing apparatus of material, are such as stirred
Mix machine, kneader etc..
In the preparation method, the melt blending equipment of material can selected from the general blending equipment in rubber and plastic processing industry,
It can be double screw extruder, BUSS is kneaded unit etc..
In the process that the polypropylene inhibits master batch with VOC, material melts blending temperature is in polypropylene processing
Common blending temperature, it should it will not be made to select in the range of decomposition not only guaranteeing that matrix resin melts completely, generally
190 DEG C~230 DEG C, preferred processing temperature is 200~220 DEG C；Screw speed is generally 300~450rpm.
According to the third aspect of the invention we, the present invention provides polypropylene VOC, and master batch to be inhibited to reduce polypropylene
On VOC application (belong to it is a kind of reduction polypropylene in VOC method), the application include: by comprising polypropylene, acid absorbent, resist
Each component including oxygen agent and the polypropylene inhibit master batch with VOC carries out melt blending, obtains low VOC polypropylene composition；
Relative to the polypropylene of 100 parts by weight, it is 0.5~10 parts by weight that polypropylene VOC, which inhibits master batch,.
In one embodiment, on the basis of the total amount of the low VOC polypropylene composition, octaphenyl silsesquioxane
Content less than 2 weight %, in this case, the TVOC of the low VOC polypropylene composition is lower than 50 μ gC/g.
It is highly preferred that the content of octaphenyl silsesquioxane is small on the basis of the total amount of the low VOC polypropylene composition
In 1 weight % and it is greater than 0.2 weight %.
For the ease of distinguishing, the polypropylene is inhibited the matrix in master batch to be known as acrylic resin by the present invention with VOC, will
The matrix resin (that is, the polypropylene for having VOC content to be reduced) for preparing the low VOC polypropylene composition is known as polypropylene, institute
Stating polypropylene can be any required homopolypropylene resin or acrylic resin copolymer for reducing VOC, use with the polypropylene
VOC inhibits the acrylic resin in master batch can be identical or different.
In the low VOC polypropylene composition, the acid absorbent can be residual with diluted acid catalyst present in the polypropylene
Excess reacts, and plays the role of reduction or inhibits to generate VOC because of the degradation of diluted acid catalyzed polypropylene.The acid absorbent, it is main
Wanting property is that it has alkalinity, can react with acid catalyst residue and play neutralization, acid is inhaled required for the present invention
Agent should simultaneously can in polypropylene fine dispersion.The acid absorbent can be selected from metal oxide, lactate, benzoate, silicic acid
At least one of salt and the stearate containing Na, Ca or Zn, preferably containing the stearate of Na, Ca or Zn.Wherein, the gold
Belong to oxide and is preferably selected from calcium oxide and/or zinc oxide；The silicate can be selected from natural or synthetic hydrotalcite；It is described to contain
The stearate of Na, Ca or Zn are preferably selected from least one of calcium stearate, zinc stearate and odium stearate.
In the low VOC polypropylene composition, relative to the polypropylene of 100 parts by weight, the acid absorbent can be
0.05~1 parts by weight, preferably 0.05~0.8 parts by weight.
In the low VOC polypropylene composition, the antioxidant can refer to the polypropylene VOC and inhibit anti-in master batch
Oxygen agent is selected, and details are not described herein.In the low VOC polypropylene composition, relative to 100 parts by weight described poly- third
Alkene, the antioxidant are 0.05~1 parts by weight, preferably 0.05~0.8 parts by weight, more preferably 0.1~0.5 parts by weight.
In order to preferably remove VOC, in the application that polypropylene VOC inhibits master batch, set when preferably remaining melt blending
The vacuum degree of standby vacuum system is more than -0.05MPa, more preferably more than -0.08MPa.
In addition, in the preparation process that the polypropylene inhibits master batch and the low VOC polypropylene composition with VOC, root
According to the needs specifically processed, commonly some add, can also be added in acrylic resin process in respective blending material
Work auxiliary agent, such as: lubricant, antistatic agent, dispersing agent, pigment, processing heat stabilizer, light stabilizer etc., dosage is normal
Dosage is advised, or requirement according to the actual situation is adjusted；But it is preferred that the polypropylene inhibits master batch to be added without aforementioned add with VOC
Work auxiliary agent.In an application of the invention, used mixing apparatus, fusion apparatus are as described above, details are not described herein.
It is described further below with reference to embodiment, but the scope of the invention is not limited to these embodiments.
In following embodiment and comparative example, antioxidant 1010, irgasfos 168, antioxidant 1076, antioxidant 1098 and antioxygen
BASF Aktiengesellschaft is originated from agent 3114；Octaphenyl silsesquioxane is MS0840, originates from U.S. Hybridplastic public affairs
Department.BUSS is kneaded unit model MKD-30, originates from BUSS company of Switzerland.
Embodiment 1-5
Embodiment 1-5 is for illustrating that polypropylene of the invention VOC inhibits master batch and preparation method thereof.
By polypropylene (homopolypropylene, trade mark K1008, be purchased from Sinopec Beijing Yanshan Mountain branch company, 230 DEG C,
Melt index under 2.16kg is put into high-speed mixer for 10g/10min), octaphenyl silsesquioxane, antioxidant, 300
Rev/min revolving speed under stir 3 minutes, be sufficiently mixed each component uniformly；Said mixture material is then passed through 190 DEG C~230
BUSS within the scope of DEG C is kneaded unit extruding pelletization, obtains polypropylene VOC and inhibits master batch A~E.Specific formula is shown in Table 1, wherein
Each component content is based on parts by weight.
Embodiment 6-16
Embodiment 6-16 is used to illustrate the application that polypropylene VOC of the present invention inhibits master batch.
Polypropylene prepared by acrylic resin (HHP4, Sinopec Maoming branch company), Examples 1 to 5 is inhibited with VOC
Master batch, antioxidant, acid absorbent and other processing aids are put into high-speed mixer, are stirred 3 minutes under 300 revs/min of revolving speed,
It is sufficiently mixed each component uniformly.Said mixture material is then kneaded unit by the BUSS within the scope of 190 DEG C~230 DEG C,
Extruding pelletization under conditions of keeping vacuum degree -0.08MPa, obtains polypropylene material.Its specific formula is shown in Table 2, wherein each group
Divide content based on parts by weight.
In addition, the pellet of extrusion is dried 2h in 80 DEG C of constant temperature ovens, the test of TVOC joins according to German automobiles industry
The standard VDA277 of credit union is tested.Specific performance the results are shown in Table 2.
Comparative example 1-2
The raw materials such as polypropylene (with embodiment 6), antioxidant, acid absorbent, adsorbent (use of comparative example 2) are pressed to the tool of table 2
Body proportion weighs, and is respectively put into high-speed mixer, stirs 3 minutes under 300 revs/min of revolving speed, be sufficiently mixed each component
Uniformly.Said mixture material is then kneaded unit extruding pelletization by the BUSS within the scope of 190 DEG C~230 DEG C, obtains poly- third
Alkene material.Its specific formula is shown in Table 2, and wherein each component content is based on parts by weight.
The pellet of extrusion is dried into 2h in 80 DEG C of constant temperature ovens, the test of TVOC is according to the meeting of German automobiles industrial combination
Standard VDA277 test.Specific performance the results are shown in Table 2.
The component proportion of 1 master batch of table
The component proportion and the performance test results of table 2 embodiment 6-16 and comparative example 1-2
As can be seen from the above table, inhibit master batch that can significantly reduce polypropylene material using the polypropylene of embodiment 1-5 VOC
VOC content, make the total volatile organism (TVOC) of polypropylene material lower than 50 μ gC/g.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.In addition, can also be between a variety of different embodiments of the invention
Row any combination, as long as it does not violate the idea of the present invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of polypropylene inhibits master batch with VOC, which is characterized in that it includes the following of blending that polypropylene VOC, which inhibits master batch,
Component: acrylic resin, octaphenyl silsesquioxane and antioxidant；Wherein, the acrylic resin be 50~90 parts by weight, eight
Phenyl silsesquioxane is 10~50 parts by weight, and the total amount of the acrylic resin and octaphenyl silsesquioxane is 100 weights
Measure part.
2. polypropylene according to claim 1 inhibits master batch with VOC, wherein the acrylic resin is selected from homopolymerization poly- third
Alkene and/or copolymer polypropylene, the acrylic resin are 3~30g/10min in the melt index of 230 DEG C, 2.16kg, preferably
3~10g/10min.
3. polypropylene according to claim 1 inhibits master batch with VOC, wherein with the acrylic resin and octaphenyl times
The total amount of half siloxanes is 100 parts by weight meters, and the antioxidant is 0.01~1 parts by weight.
4. polypropylene according to claim 1 or 3 inhibits master batch with VOC, wherein the antioxidant is anti-selected from Hinered phenols
Oxygen agent and/or phosphoric acid ester antioxidant；
The Hinered phenols antioxidant be selected from four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, β-(3,
5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, N, N'- is bis--(3- (3,5- di-tert-butyl-hydroxy phenyl) third
Acyl group) at least one of hexamethylene diamine and 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) isocyanuric acid；
The phosphoric acid ester antioxidant is selected from three (2,4- di-tert-butylphenol) phosphite esters and/or bis- (2,4- DI-tert-butylphenol compounds)
Pentaerythritol diphosphites.
5. polypropylene according to claim 4 inhibits master batch with VOC, wherein the antioxidant is Hinered phenols antioxidant
With the mixture of phosphoric acid ester antioxidant, the weight ratio of the Hinered phenols antioxidant and phosphoric acid ester antioxidant be 1 ︰ (1~
8)。
6. polypropylene described in any one of claim 1-5 inhibits the preparation method of master batch with VOC, which includes:
By the acrylic resin, octaphenyl silsesquioxane and antioxidant melt blending and extruding pelletization, the polypropylene is made and uses
VOC inhibits master batch.
7. the VOC of polypropylene described in any one of claim 1-5 inhibits master batch reducing the application on polypropylene VOC, should
Using include: will comprising polypropylene, acid absorbent, antioxidant and the polypropylene with VOC inhibit master batch including each component carry out
Melt blending obtains low VOC polypropylene composition；Relative to the polypropylene of 100 parts by weight, the polypropylene is pressed down with VOC
Master batch processed is 0.5~10 parts by weight.
8. application according to claim 7, wherein the acid absorbent be selected from metal oxide, lactate, benzoate,
At least one of silicate and the stearate containing Na, Ca or Zn.
9. application according to claim 7 or 8, wherein relative to the polypropylene of 100 parts by weight, the acid absorbent
For 0.05~1 parts by weight, the antioxidant is 0.05~1 parts by weight.
10. application according to claim 7 or 8, wherein when preparing the low VOC polypropylene composition, the melting
Keep equipment vacuum degree more than -0.05MPa when blending.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457578A (en) * | 2020-11-04 | 2021-03-09 | 盘锦海兴科技股份有限公司 | Wollastonite modified polypropylene master batch and preparation method thereof |
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