CN110305404A - A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof - Google Patents
A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof Download PDFInfo
- Publication number
- CN110305404A CN110305404A CN201910512467.7A CN201910512467A CN110305404A CN 110305404 A CN110305404 A CN 110305404A CN 201910512467 A CN201910512467 A CN 201910512467A CN 110305404 A CN110305404 A CN 110305404A
- Authority
- CN
- China
- Prior art keywords
- master batch
- new
- effective flame
- retardant
- proof weather
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/132—Phenols containing keto groups, e.g. benzophenones
Abstract
The present invention relates to a kind of new and effective flame-proof weather-resisting master batches and preparation method thereof, including following components: vector resin, fire retardant, anti-light aging auxiliary agent, antioxidant and processing aid；The vector resin accounts for the 8%-75% of master batch gross mass, and the mass ratio of the anti-light aging auxiliary agent and fire retardant is 1:2-30, and the mass ratio of the antioxidant and anti-light aging auxiliary agent is 1:6-30, and the additive amount of the processing aid accounts for the 0.5%-5% of gross mass；The invention discloses a kind of new and effective flame-proof weather-resisting master batches and preparation method thereof, auxiliary agent multifunction can be assigned by very low amount acid absorbent, lubricant and processing stabilizers, reach fire-retardant and weather-proof double effects, fundamental property without damaging resin, and reach safety and environmental protection, the effect not injured to human body.
Description
Technical field
The present invention relates to a kind of new and effective flame-proof weather-resisting master batches and preparation method thereof, belong to high molecular material auxiliary agent neck
Domain.
Background technique
With the development of economy with the acceleration of process of modernization, the application field of high molecular material constantly extends, but
Be most of high molecular material all it is hydrocarbon structure, belongs to inflammable, combustible material, releases a large amount of heat in burning, and
Flame propagation speed is not easy to extinguish.In recent years, global fire proofing industry production capacity increases year by year, and various countries promote related material in succession
Expect fire-retardant regulation, more stringent requirements are proposed to the anti-flammability of high molecular material.Therefore, exploitation is had excellent performance, effect is more preferable,
More environmentally friendly new flame retardant becomes an emphasis of current fire-retardant research field.It is comprehensive to high polymer material flame-retarded technology at present
The high request of performance indicator is mainly reflected in, and should reach defined fire retardant rank, there is good physical mechanical strength again, non-
Corrosivity, few cigarette, photostability, resistance to ag(e)ing and heat-resistant stability etc..It is known that high molecular material easily by
To illumination so as to cause molecular chain rupture, make material property sharp fall, to largely effect on its use value.Thus, together
When the auxiliary agent functionalization research with fire-retardant and anti-light oxygen aging, become high molecular products research emphasis.In addition, most of
Additive includes the mechanical property that fire retardant, antioxidant, light stabilizer etc. can all influence product when being applied to plastic products, together
When there is also hardly possible dispersion, difficult processing and Dust Capacity are big the problems such as, and by preparing master batch, can effectively improve additive and exist
Dispersion and processability in resin reduce difficulty of processing and cost, more efficient raising material property, and improve workshop work
Make environment.It is mostly based on fire-retardant and Research on Weatherability at present and is also limited to material and additive, is seldom related to fire-retardant-weather-proof multiple
The research of master batch is closed, and different auxiliary agents adds will appear some undesirable side reactions together in process, to product properties
It makes a big impact.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of new and effective flame-proof weather-resisting master batch and its preparation
Method, to solve problems of the prior art.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of new and effective flame-proof weather-resisting master batch, including following components: vector resin, fire retardant, anti-light aging auxiliary agent, antioxidant
And processing aid；The vector resin accounts for the 8%-75% of master batch gross mass, the quality of the anti-light aging auxiliary agent and fire retardant
Than for 1:2-30, the mass ratio of the antioxidant and anti-light aging auxiliary agent is 1:6-30, and the additive amount Zhan of the processing aid is total
The 0.5%-5% of quality.
As an improvement of the present invention, the vector resin be olefine kind resin, polyesters, it is any one in engineering plastics
Kind is several, and the melt index of the vector resin is 5-45g/10min.
As an improvement of the present invention, the fire retardant is halogenated flame retardant, phosphorus flame retardant, nitrogenated flame retardant, nitrogen
Any one in phosphorus flame retardant, triazine flame retardant, graft type fire retardant and piperidines nitrogen-alkoxy type fire retardant.
As an improvement of the present invention, the anti-light aging auxiliary agent is hindered amine light stabilizer, ultraviolet absorbing agent, light
Any one or a few in screener.
As an improvement of the present invention, the hindered amine light stabilizer is HALS-944, HALA-770, HALS-3529
Or HALS-119.
As an improvement of the present invention, the photomask agent is titanium dioxide.
As an improvement of the present invention, the antioxidant is hindered phenol type antioxidant.
As an improvement of the present invention, the processing aid is that lubricant, dispersing agent, hot-working stabilizer and acid are inhaled
Receive any one or a few in agent.
As an improvement of the present invention, a kind of preparation method of new and effective flame-proof weather-resisting master batch, the specific steps are as follows:
(1) raw material is weighed according to the parts by weight of highly effective flame-retardant weatherable master batch raw material；
(2) by fire retardant and processing aid at 25 DEG C, with 20-40rpm/min revolving speed mixing 2-3min；
(3) anti-light aging auxiliary agent, antioxidant is added into the product after step (2) reaction, and at 25 DEG C, with 40-
60rpm/min revolving speed mixing 2-3min；
(4) vector resin, the mixing after step (3) reaction are fed through in double screw extruder and carry out extruding pelletization, i.e.,
Highly effective flame-retardant weatherable master batch can be obtained.
As an improvement of the present invention, the revolving speed of the double screw extruder is 200-550rpm.
The incorporation of processing aid is carried out with known method, with dry-mixed when such as powder, if atent solvent, oil or water
Equal solution, dispersion liquid or suspension etc. use wet mixing, are then added in any blender and mix with other components.Process
In either carried out in the presence of inert atmosphere still oxygen, do not affect processing effect.
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows:
The invention discloses a kind of new and effective flame-proof weather-resisting master batches and preparation method thereof, can absorb by very low amount acid
Agent, lubricant and processing stabilizers assign auxiliary agent multifunction, reach fire-retardant and weather-proof double effects, without damaging resin
Fundamental property, and reach safety and environmental protection, the effect that human body is not injured.
To solve the antagonistic effect between hindered amine light stabilizer and fire retardant, the present invention passes through minimal amount of processing aid
Absorb the acidic materials that fire retardant is released to coat hindered amine light stabilizer and acid absorbent, and be made environmental protection, point
Dissipate that property is good and fire-retardant-weatherable master batch easy to process.For novel using piperidyl as the derivative obtained functionalization product of parent,
And various azane oxygroups, hyperbranched, triazine structure fire-retardant-light stabilization aid, it can also be effectively improved using the method for the present invention
Its performance.
The invention discloses a kind of new and effective flame-proof weather-resisting master batches and preparation method thereof can be to avoid conventional flame retardant product
Lead to the too high mechanical performance for influencing material of fire retardant additive amount, and effective alleviation tradition to reach specific fire-retardant rank
Antagonistic effect between fire retardant and hindered amine light stabilizer, reach have it is excellent to light, heat and oxidative stability and anti-flammability.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1:
A kind of preparation method of new and effective flame-proof weather-resisting master batch, the specific steps are as follows:
(1) raw material and each component ratio:
| Classification | Sample name | Additive amount |
| Vector resin | Polypropylene | 78wt% |
| Fire retardant | APP | 16wt% |
| Hindered amine light stabilizer | HALS-944 | 0.4wt% |
| Ultraviolet absorbing agent | UV-531 | 0.3 wt% |
| Antioxidant | B215 | 0.3wt% |
| Processing aid | Stearic acid, acid absorbent, hot-working stabilizer | 5wt% |
Raw material is accurately weighed according to raw material given above and each component ratio.Processing aid 5% of the present invention, wherein acid absorbent 1wt%,
Stearic acid 1wt%, other hot-working auxiliary agents and heat stabilizer 3wt%.
(2) processing technology
1) by fire retardant and processing aid at 25 DEG C, with 20-40rpm/min revolving speed mixing 2-3min；
2) anti-light aging auxiliary agent, antioxidant are added into the product after step 1) is reacted, and at 25 DEG C, with 40-
60rpm/min revolving speed mixing 2-3min；
3) vector resin, the mixing after step 2 is reacted are fed through in double screw extruder, 200oIt is squeezed out under C
It is granulated, by gained particle in 80oDry 3 ~ 5h, can be obtained highly effective flame-retardant weatherable master batch in C drying box.
Embodiment 2:
Properties of sample detection:
The master batch that embodiment 1 generates is passed through into double screw extruder 200 together with acrylic resinoC extruding pelletization, is added
Master batch is the 5% of anti-flaming polypropylene material gross mass, by gained particle in 80oDry 3-5h in C drying box, taking-up are molded to obtain mark
Quasi- colour table and 1.6mm anti-flammability test sample, and by obtained standard sample of photo 25oC, store under 50% humidity for 24 hours, as
Sample is in case test.
Xenon lamp aging: it exposes the samples to carry out burn-in test (irradiation level 0.55W/ ㎡/nm@in xenon lamp aging chamber
340nm, black mark temperature 60 C ± 3 DEG C, 18min condensation, 102min illumination), product before and after its aging is compared after 500h aging
Surface and chromatic aberration.
Δ E: color difference (according to DIN6174)
The result shows that the product surface containing fire-retardant-weatherable master batch of the invention is non-blooming, and color difference is significantly smaller, fire-retardant rank
It can achieve V-2 rank as defined in UL 94.
Embodiment 3:
Properties of sample detection
The sample obtained dried and virgin pp resin are molded into standard dog bone batten according to embodiment 1, constant temperature is permanent
Wet storage for 24 hours, is taken out as 500h aging is carried out in xenon lamp aging case, and aging terminates to take out, and constant temperature and humidity places test for 24 hours
Its maximum, force retention rate.
Xenon lamp aging: it exposes the samples to carry out burn-in test (irradiation level 0.55W/ ㎡/nm@in xenon lamp aging chamber
340nm, black mark temperature 60 C ± 3 DEG C, 18min condensation, 102min illumination), product before and after its aging is compared after 500h aging
Surface and the variation of maximum, force retention rate.
Extension test: according to GB/T 1040.5-2006
Retention rate is up to 97% after 500h xenon lamp aging for product containing fire-retardant-weatherable master batch of the invention, and the guarantor after pure sample aging
Staying rate is 76%.
Above-described embodiment is only the preferred technical solution of the present invention, and is not construed as limitation of the invention, the present invention
Protection scope should with claim record technical solution, including claim record technical solution in technical characteristic etc.
It is protection scope with alternative, i.e., equivalent replacement within this range is improved, also within protection scope of the present invention.
Claims (10)
1. a kind of new and effective flame-proof weather-resisting master batch, which is characterized in that including following components: vector resin, fire retardant, anti-light old
Change auxiliary agent, antioxidant and processing aid；The vector resin accounts for the 8%-75% of master batch gross mass, the anti-light aging auxiliary agent with
The mass ratio of fire retardant is 1:2-30, and the mass ratio of the antioxidant and anti-light aging auxiliary agent is 1:6-30, the processing aid
Additive amount account for the 0.5%-5% of gross mass.
2. a kind of new and effective flame-proof weather-resisting master batch according to claim 1, it is characterised in that: the vector resin is alkene
Hydrocarbon resins, polyesters, any one or a few in engineering plastics, the melt index of the vector resin are 5-45g/10min.
3. a kind of new and effective flame-proof weather-resisting master batch according to claim 1, it is characterised in that: the fire retardant is halogen system
Fire retardant, phosphorus flame retardant, nitrogenated flame retardant, nitrogen phosphorus flame retardant, triazine flame retardant, graft type fire retardant and piperidines
Any one in nitrogen-alkoxy type fire retardant.
4. a kind of new and effective flame-proof weather-resisting master batch according to claim 1, it is characterised in that: the anti-light aging auxiliary agent
For any one or a few in hindered amine light stabilizer, ultraviolet absorbing agent, photomask agent.
5. a kind of new and effective flame-proof weather-resisting master batch according to claim 4, it is characterised in that: the hindered amine light stabilizer
Agent is HALS-944, HALA-770, HALS-3529 or HALS-119.
6. a kind of new and effective flame-proof weather-resisting master batch according to claim 4, it is characterised in that: the photomask agent is two
Titanium oxide.
7. a kind of new and effective flame-proof weather-resisting master batch according to claim 1, it is characterised in that: the antioxidant is to be obstructed
Phenol type antioxidant.
8. a kind of new and effective flame-proof weather-resisting master batch according to claim 1, it is characterised in that: the processing aid is profit
Any one or a few in lubrication prescription, dispersing agent, hot-working stabilizer and acid absorbent.
9. a kind of preparation method of new and effective flame-proof weather-resisting master batch described in -8 according to claim 1, which is characterized in that specific
Steps are as follows:
(1) raw material is weighed according to the parts by weight of highly effective flame-retardant weatherable master batch raw material；
(2) by fire retardant and processing aid to mix 2-3min under 20-40rpm/min revolving speed；
(3) anti-light aging auxiliary agent, antioxidant is added into the product after step (2) reaction, and in 40-60rpm/min
2-3min is mixed under revolving speed；
(4) vector resin, the mixing after step (3) reaction are fed through in double screw extruder and carry out extruding pelletization, i.e.,
Highly effective flame-retardant weatherable master batch can be obtained.
10. a kind of preparation method of new and effective flame-proof weather-resisting master batch according to claim 9, it is characterised in that: described
The revolving speed of double screw extruder is 200-550rpm in step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910512467.7A CN110305404A (en) | 2019-06-13 | 2019-06-13 | A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910512467.7A CN110305404A (en) | 2019-06-13 | 2019-06-13 | A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110305404A true CN110305404A (en) | 2019-10-08 |
Family
ID=68077213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910512467.7A Pending CN110305404A (en) | 2019-06-13 | 2019-06-13 | A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110305404A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922681A (en) * | 2019-11-08 | 2020-03-27 | 宿迁联盛科技股份有限公司 | Method for improving compatibility of ethylene propylene diene monomer and hindered amine light stabilizer |
| CN111675885A (en) * | 2020-06-22 | 2020-09-18 | 宿迁联宏新材料有限公司 | PET (polyethylene terephthalate) light aging resistant and weather resistant master batch and preparation method thereof |
| CN114181445A (en) * | 2021-12-24 | 2022-03-15 | 宿迁联宏新材料有限公司 | Weather-resistant master batch for polypropylene flat filament product and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010070621A (en) * | 2008-09-17 | 2010-04-02 | New Japan Chem Co Ltd | Masterbatch and method for manufacturing the same |
| CN103694688A (en) * | 2013-12-28 | 2014-04-02 | 宁波金富亮塑料科技有限公司 | Color master batch for yellow anti-UV (ultraviolet) nylon |
| CN105885338A (en) * | 2016-06-23 | 2016-08-24 | 北京海科华昌新材料技术有限公司 | ABS flame-retardant masterbatch for industrial helmet and preparation method of ABS flame-retardant masterbatch |
| CN107828168A (en) * | 2017-11-20 | 2018-03-23 | 滁州华美塑业有限公司 | A kind of flame-proof weather-resisting color masterbatch and its production method |
| CN108102237A (en) * | 2017-12-14 | 2018-06-01 | 江苏万纳普新材料科技有限公司 | A kind of heat-proof combustion-resistant master batch and its manufacturing method |
-
2019
- 2019-06-13 CN CN201910512467.7A patent/CN110305404A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010070621A (en) * | 2008-09-17 | 2010-04-02 | New Japan Chem Co Ltd | Masterbatch and method for manufacturing the same |
| CN103694688A (en) * | 2013-12-28 | 2014-04-02 | 宁波金富亮塑料科技有限公司 | Color master batch for yellow anti-UV (ultraviolet) nylon |
| CN105885338A (en) * | 2016-06-23 | 2016-08-24 | 北京海科华昌新材料技术有限公司 | ABS flame-retardant masterbatch for industrial helmet and preparation method of ABS flame-retardant masterbatch |
| CN107828168A (en) * | 2017-11-20 | 2018-03-23 | 滁州华美塑业有限公司 | A kind of flame-proof weather-resisting color masterbatch and its production method |
| CN108102237A (en) * | 2017-12-14 | 2018-06-01 | 江苏万纳普新材料科技有限公司 | A kind of heat-proof combustion-resistant master batch and its manufacturing method |
Non-Patent Citations (2)
| Title |
|---|
| 王澜 等编著: "《高分子材料》", 31 January 2009, 中国轻工业出版社 * |
| 隋昭德 等编著: "《光稳定剂及其应用技术》", 31 January 2010, 中国轻工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922681A (en) * | 2019-11-08 | 2020-03-27 | 宿迁联盛科技股份有限公司 | Method for improving compatibility of ethylene propylene diene monomer and hindered amine light stabilizer |
| CN111675885A (en) * | 2020-06-22 | 2020-09-18 | 宿迁联宏新材料有限公司 | PET (polyethylene terephthalate) light aging resistant and weather resistant master batch and preparation method thereof |
| CN114181445A (en) * | 2021-12-24 | 2022-03-15 | 宿迁联宏新材料有限公司 | Weather-resistant master batch for polypropylene flat filament product and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110305404A (en) | A kind of new and effective flame-proof weather-resisting master batch and preparation method thereof | |
| Wang et al. | Performance of an intumescent‐flame‐retardant master batch synthesized by twin‐screw reactive extrusion: effect of the polypropylene carrier resin | |
| KR101205126B1 (en) | flame retardant polymeric compositions | |
| Wang et al. | Synthesis of N-methyl triazine-ethylenediamine copolymer charring foaming agent and its enhancement on flame retardancy and water resistance for polypropylene composites | |
| CN109206829B (en) | High-yellowing-resistance precipitation-resistance halogen-free flame-retardant thermoplastic elastomer composition and preparation method thereof | |
| CN104059278A (en) | Hydrolysis-resistant migration-free halogen-free flame-retardant polyolefin composition and preparation method thereof | |
| US11111364B2 (en) | Flame retardant polymer composite materials and methods of making the same | |
| WO2021164353A1 (en) | Antimony-free flame-retardant polypropylene composition and preparation method therefor | |
| CN106009585A (en) | Halogen-free flame retardation polycarbonate material and preparation method thereof | |
| Wang et al. | Enhanced flame retardancy of natural rubber composite with addition of microencapsulated ammonium polyphosphate and MCM-41 fillers | |
| CN103450549A (en) | Expansive type halogen-free flame-retardant cable material | |
| CN110643165A (en) | High-performance ultraviolet-resistant environment-friendly flame-retardant PC/ABS composite material and preparation method thereof | |
| CN104877177B (en) | A kind of cladded type fire retardant and preparation method and application and the moulding compound being made from it | |
| CN113388193B (en) | Anti-yellowing halogen-free flame-retardant polyolefin composition and preparation method thereof | |
| CN107603182B (en) | A kind of moisture resistance indoor hardware fitting of salt tolerant and preparation method thereof | |
| CN112852052B (en) | Flame-retardant polypropylene material, preparation method and application thereof | |
| CN112080074B (en) | Flame-retardant polypropylene composition and preparation method and application thereof | |
| CN108570205B (en) | Flame-retardant styrene composition and preparation method thereof | |
| US3060149A (en) | Stabilized polymer compositions | |
| CN108250573B (en) | Thermo-oxidative aging resistant halogen-free environment-friendly flame-retardant polypropylene material and preparation method thereof | |
| CN108359174A (en) | Low bromine anti-flaming polypropylene composite of a kind of low smell and preparation method thereof | |
| CN112694643A (en) | Preparation method of low-halogen flame retardant and application of low-halogen flame retardant in polypropylene | |
| CN112679826A (en) | Flame-retardant polyethylene composition and preparation method thereof | |
| CN111995813A (en) | Polyethylene composite material and preparation method and application thereof | |
| CN113121913A (en) | Scratch-resistant halogen-free flame-retardant long-fiber PP and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191008 |