CN106633398A - Anti-floating fire, heat-resistant and anti-aging polypropylene material and a preparation method thereof - Google Patents
Anti-floating fire, heat-resistant and anti-aging polypropylene material and a preparation method thereof Download PDFInfo
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- CN106633398A CN106633398A CN201611175144.6A CN201611175144A CN106633398A CN 106633398 A CN106633398 A CN 106633398A CN 201611175144 A CN201611175144 A CN 201611175144A CN 106633398 A CN106633398 A CN 106633398A
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses an anti-floating fire, heat-resistant and anti-aging polypropylene material and a preparation method thereof. The anti-floating fire, heat-resistant and anti-aging polypropylene material is prepared from the following raw materials in parts by weight: 5 to 10 parts of metallocene polypropylene, 28 to 65.7 parts of homo-polypropylene, 5 to 12 parts of a toughening agent, 20 to 40 parts of glass fibres, 3 to 6 parts of a compatilizer, 0.2 to 1 part of an antioxidant, 0.5 to 2 parts of a heat-resistant additive and 0.5 to 1 part of a lubricating agent. The polypropylene material prepared by the preparation method has excellent mechanical property; meanwhile, the surface is bright and clean, and does not have floating fibres; the polypropylene material can resist the thermo-oxidative aging for 1,000 hours at 150 DEG C, and the performance retaining rate is 80% or higher.
Description
Technical field
The present invention relates to technical field of macromolecules, and in particular to a kind of fine, the heat-resisting and aging polypropylene material of anti-floating and
Its preparation method.
Background technology
Polypropylene is simple due to synthetic method, and with abundant raw material source, light weight, good physical and mechanical property and adds
Work performance, while can meet the different desired modified polypropylene materials of various automobile components by various modified manufacturing process,
In addition its excellent cost performance, makes various toughness reinforcings, filling, RPP material be widely used in the automotive industry.
Glass fiber reinforced polypropylene material, with excellent mechanical performance, thermostability and creep resistant.Glass fibre increases
Strong polypropylene material can meet the requirement of structural fabrication, have been widely used in automobile and field of household appliances.But for outward appearance product
For, not only need high intensity, also require that simultaneously for presentation quality it is higher, for surface floating fiber also require that it is higher.At present
The floating fibre effect of existing glass fiber reinforced polypropylene material can not meet the requirement of outward appearance product.Simultaneously for heat oxygen aging resistance
Higher product is required, glass polypropylene material is easily degraded under long term high temperature, limits its range of application.
Patent publication No. CN103772813A discloses a kind of low floating fine glass fiber reinforced polypropylene composite material, and it is by poly- third
Alkene, alkali-free glass fiber, compatilizer, antioxidant, anti-floating fibre master batch and other auxiliary agents are constituted, and wherein anti-floating fibre master batch is by polypropylene, profit
Lubrication prescription, coupling agent, metal-oxide, alkali-free glass fiber and other auxiliary agents are constituted.The proprietary material adopts two-step process, due to anti-
The introducing of metal-oxide, can cause Length of Glass Fiber to reduce in floating fibre master batch, and sacrifice the mechanical property of material, while glass
Content is relatively low.Publication number CN103265761A, discloses a kind of low molecule polar substancess maleic anhydride etc., initiator to poly-
Propylene modifying surface emerges RPP material obtainedly, although the material mechanical property has larger deduction,
But floating fibre problem is not still solved.
Above technology is by processing glass or adding compatilizer to improve the compatibility of glass, and the introducing for passing through filler
The length for reducing glass is floating fine to improve, and its shortcoming is that glass fiber content can not be too high, otherwise floats fine still very serious.Fill out simultaneously
The introducing of material can reduce overall mechanical property.
The content of the invention
To overcome the problem of existing polypropylene material PASS difference, present invention is disclosed a kind of anti-floating it is fine, heat-resisting and
Aging polypropylene material and preparation method.The PP composite material not only has excellent mechanical property, while surface light
The floating fibre of clean nothing.The product can be with 150 DEG C of heat oxygen aging resistance, 1000h, and property retention rate is more than 80%.
The technical scheme is that：
A kind of fine, the heat-resisting and aging polypropylene material of anti-floating, it is characterised in that：It is by following raw materials according group by weight
Into：
Further scheme, the melt index of described metallocene polypropylene is more than 1000g/ under the conditions of 23 DEG C/2.16kg
10min。
Further scheme, described toughener is EVA, TPU or propylene-based elastomeric.
Propylene-based elastomeric such as ExxonMobil Chemical VistamaxxTMPropylene-based elastomeric
Further scheme, described glass fibre is alkali-free chopped glass fiber or continuous glass-fiber.
Further scheme, described antioxidant is a kind of in Hinered phenols, thio esters, phosphite ester type thermal stabilizing agent.
Wherein Hinered phenols include antioxidant 1010, thio esters DSTP, phosphorous acid esters are irgasfos 168.
Further scheme, described compatilizer is polypropylene grafted maleic anhydride, polypropylene grafted glycidyl
At least one in ester, ethylene-octene copolymer grafted maleic anhydride.
Further scheme, the heat resistance accessory in the modified poly ester, epoxy resin that molecular weight is 1150 at least one
Kind.
Further scheme, the lubricant is double selected from Tissuemat E, stearate, ethylene bis stearamide, grafting ethylene
At least one in stearmide
Another goal of the invention of the present invention provides a kind of preparation of fine, the heat-resisting and aging polypropylene material of above-mentioned anti-floating
Method, its concrete steps is：
(1) metallocene polypropylene, HOPP, toughener, compatilizer, antioxidant, heat resistance accessory, profit are weighed by proportioning
Lubrication prescription, and they are added together high mixer high speed mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, while glass fibre is added by glass fiber opening
Enter, extruding pelletization, modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, and screw speed is
800r/min, melt pressure is 2.5MPa, and vacuum is -0.08MPa.
The present invention improves fiberglass reinforced material by introducing metallocene PP, polar elastomers in Polypropylene compositions objects system
The floating fibre problem of material, while impact of the glass fibre to thermo-oxidative ageing is weakened by the introducing of special heat resistance accessory, it is multiple so as to realize
The good outward appearance thermo oxidative aging of condensation material, has expanded the range of application of fiberglass reinforced
Specific embodiment
To be best understood from the present invention, with reference to embodiment, the invention will be further described, and following examples are only right
The present invention illustrates rather than it is limited.
Embodiment 1：
(1) by 5 parts of metallocene polypropylene, 65.7 parts of HOPP, toughener propylene-based elastomeric (VistamaxxTM)5
Part, 3 parts of compatilizer polypropylene grafted maleic anhydride, 0.3 part of antioxidant DSTP, 0.5 part of heat resistance accessory epoxy resin, lubricant
0.5 part of Tissuemat E, adds together high mixer high speed mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, at the same by alkali-free chopped glass fiber 20 parts pass through
Glass fiber opening is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, spiral shell
Bar rotating speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
Embodiment 2：
(1) 5 parts of metallocene polypropylene, 65.2 parts of HOPP, 5 parts of toughener EVA, compatilizer ethylene-octene are total to
3 parts of polymers grafted maleic anhydride, 0.3 part of irgasfos 168,1 part of modified poly ester, the lubricant that heat resistance accessory molecular weight is 1150
Tissuemat E, stearate, ethylene bis stearamide, grafting ethylene bis stearamide 0.5-1 parts, add together high in high mixer
Fast mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, at the same by alkali-free chopped glass fiber 20 parts pass through
Glass fiber opening is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, spiral shell
Bar rotating speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
Embodiment 3：
(1) by 10 parts of metallocene polypropylene, 56.2 parts of HOPP, toughener propylene-based elastomeric (VistamaxxTM)
8 parts, 5 parts of compatilizer polypropylene grafted maleic anhydride, 0.5 part of antioxidant 1010,2 parts of heat resistance accessory epoxy resin, lubricant gather
Ethylene waxes, stearate, ethylene bis stearamide, grafting ethylene bis stearamide 0.5-1 parts, add together high mixer high speed
Mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, at the same by continuous glass-fiber 20 parts pass through glass
Mouth is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, and screw rod turns
Speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
Embodiment 4：
(1) 10 parts of metallocene polypropylene, 52.2 parts of HOPP, 12 parts of toughener TPU, compatilizer polypropylene are connect
3 parts of glycidyl acrylate of branch, 0.5 part of antioxidant DSTP, 2 parts of heat resistance accessory epoxy resin, lubricant ethylene stearic bicine diester
0.5 part of amine, adds together high mixer high speed mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, at the same by alkali-free chopped glass fiber 20 parts pass through
Glass fiber opening is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, spiral shell
Bar rotating speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
Embodiment 5：
(1) by 10 parts of metallocene polypropylene, 38.5 parts of HOPP, 12 parts of toughener EVA, compatilizer ethylene-octene
6 parts of copolymer grafted maleic anhydride, 0.7 part of irgasfos 168, the modified poly ester that heat resistance accessory molecular weight is 1150,1 part, lubrication
Agent is grafted 0.5 part of ethylene bis stearamide, and high mixer high speed mix homogeneously is added together；
(2) will melt in mixed material input parallel double-screw extruder, at the same by alkali-free chopped glass fiber 30 parts pass through
Glass fiber opening is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, spiral shell
Bar rotating speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
Embodiment 6：
(1) by 10 parts of metallocene polypropylene, 28 parts of HOPP, toughener propylene-based elastomeric (VistamaxxTM)12
Part, 3 parts of compatilizer polypropylene grafted maleic anhydride, 3 parts of ethylene-octene copolymer grafted maleic anhydride, antioxidant 1010 0.5
Part, 0.5 part of irgasfos 168,1 part of modified poly ester, 1 part of epoxy resin, the lubricant polyethylene that heat resistance accessory molecular weight is 1150
0.5 part of wax, 0.2 part of calcium stearate, add together high mixer high speed mix homogeneously；
(2) will melt in mixed material input parallel double-screw extruder, at the same by alkali-free chopped glass fiber 40 parts pass through
Glass fiber opening is added, extruding pelletization, and modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, spiral shell
Bar rotating speed is 800r/min, and melt pressure is 2.5MPa, and vacuum is -0.08MPa.
By the preparation method of embodiment 6, following comparative example 1-3 is prepared, its formula composition is as shown in the table, and (unit is weight
Part).
Table 1：The formula composition of comparative example 1-3：
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| HOPP | 68 | 50.8 | 40.5 |
| Toughener | 8 | 12 | 12 |
| Glass fibre | 20 | 30 | 40 |
| Compatilizer | 3 | 6 | 6 |
| Antioxidant | 0.5 | 0.7 | 1 |
| Lubricant | 0.5 | 0.5 | 0.5 |
Detect the performance of poly internal olefins material prepared by above-described embodiment 1-6 and comparative example 1-3 respectively, its mode evaluated and
Standard is：
Thermo-oxidative ageing according to GB/T 7141-2008 standard testings, 150 DEG C, 1000h
Tensile strength is according to the standard testings of ISO 527
Impact strength is according to the standard testings of ISO 180.
Table 2：The performance test results
Embodiment 1-6 can be seen that polypropylene prepared by the present invention with the test result contrast of comparative example 1-3 from upper table
With the increase of metallocene polypropylene and the amount of toughener in material, material list edema over the face fibre situation has and significantly improves.I.e. originally
Invention can improve the floating fine situation of article surface, obtain good outward appearance.Simultaneously the addition of heat resistance accessory is poly- to fiberglass reinforced
The heat oxygen aging resistance of propylene material is obviously improved, can be with resistance to 150 DEG C, the requirement of 1000h heat ageings.
So the obtained polypropylene material of the present invention can be fine with anti-floating, heat-resisting and aging, and raw materials for production have technical grade
Sale of finished goods, therefore raw material is easy to get and can be directly used for industrialized production.
In addition, the function additive such as addition antistatic additive, coloring agent makes composite have individual features to the formula system
Also protected by the present invention.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to enforcement here
Example, those skilled in the art's announcement of the invention, the improvement made without departing from scope and modification all should be
Within protection scope of the present invention.
Claims (9)
1. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating, it is characterised in that：It is made up of by weight following raw materials according：
Metallocene polypropylene 5-10 parts
HOPP 28-65.7 parts
Toughener 5-12 parts
Glass fibre 20-40 parts
Compatilizer 3-6 parts
Antioxidant 0.2-1 parts
Heat resistance accessory 0.5-2 part
Lubricant 0.5-1 parts.
2. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：Described
The melt index of metallocene polypropylene is more than 1000g/10min under the conditions of 23 DEG C/2.16kg.
3. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：Described
Toughener is EVA, TPU or propylene-based elastomeric.
4. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：Described
Glass fibre is alkali-free chopped glass fiber or continuous glass-fiber.
5. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：Described
Antioxidant is a kind of in Hinered phenols, thio esters, phosphite ester type thermal stabilizing agent.
6. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：Described
Compatilizer is polypropylene grafted maleic anhydride, polypropylene grafted glycidyl acrylate, ethylene-octene copolymer grafting Malaysia
At least one in anhydride.
7. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：It is described resistance to
At least one of the hot auxiliary agent in the modified poly ester, epoxy resin that molecular weight is 1150.
8. fine, the heat-resisting and aging polypropylene material of a kind of anti-floating according to claim 1, it is characterised in that：The profit
At least one of the lubrication prescription in Tissuemat E, stearate, ethylene bis stearamide, grafting ethylene bis stearamide.
9. a kind of preparation method of fine, the heat-resisting and aging polypropylene material of anti-floating as claimed in claim 1, its feature exists
In：Concrete steps are：
(1) metallocene polypropylene, HOPP, toughener, compatilizer, antioxidant, heat resistance accessory, lubrication are weighed by proportioning
Agent, and they are added together high mixer high speed mix homogeneously；
（2）To melt in mixed material input parallel double-screw extruder, while glass fibre is added by glass fiber opening, squeeze
Go out pelletize, modified polypropylene composite material is obtained；Wherein the barrel zone temperature of extruder is 180-230 DEG C, and screw speed is 800r/
Min, melt pressure is 2.5MPa, and vacuum is -0.08MPa.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892373A (en) * | 2018-07-30 | 2018-11-27 | 合肥利裕泰玻璃制品有限公司 | A kind of glass material and preparation method thereof |
| CN109181110A (en) * | 2018-09-30 | 2019-01-11 | 南京聚隆科技股份有限公司 | A kind of thin-walled air conditioning for automobiles material and preparation method thereof |
| CN110903543A (en) * | 2019-10-14 | 2020-03-24 | 中广核俊尔（上海）新材料有限公司 | Polypropylene material for LFT-D-IM technology and preparation method thereof |
| CN111154180A (en) * | 2019-12-17 | 2020-05-15 | 会通新材料股份有限公司 | Polypropylene glass fiber material with good appearance and low warpage and preparation method thereof |
| CN111592715A (en) * | 2020-05-18 | 2020-08-28 | 宁波泰甬汽车零部件有限公司 | High-fineness extrusion-grade modified polypropylene material and automobile outer water cutter |
| CN112521686A (en) * | 2020-11-27 | 2021-03-19 | 金发科技股份有限公司 | Glass fiber reinforced polypropylene composition and preparation method and application thereof |
| CN112552583A (en) * | 2019-09-26 | 2021-03-26 | 合肥杰事杰新材料股份有限公司 | Environment-friendly flame-retardant polypropylene composition and preparation method thereof |
| CN112552590A (en) * | 2020-12-09 | 2021-03-26 | 上海普利特复合材料股份有限公司 | Talcum powder/glass fiber modified polypropylene composite material for gas-assisted molding and preparation method thereof |
| CN112745576A (en) * | 2020-12-30 | 2021-05-04 | 上海聚威新材料股份有限公司 | High-heat-resistance and high-weather-resistance long glass fiber reinforced polypropylene material and preparation method thereof |
| CN113061303A (en) * | 2020-01-02 | 2021-07-02 | 合肥杰事杰新材料股份有限公司 | Glass fiber reinforced polypropylene material and preparation method thereof |
| CN113185809A (en) * | 2021-03-23 | 2021-07-30 | 会通新材料股份有限公司 | Heat-resistant full-biodegradable composite material for thin-wall injection molding product and preparation method thereof |
| CN114437454A (en) * | 2020-11-03 | 2022-05-06 | 苏州荣昌复合材料有限公司 | 5G composite material and preparation method thereof |
| CN115725135A (en) * | 2022-10-28 | 2023-03-03 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
| CN115785572A (en) * | 2022-12-13 | 2023-03-14 | 金发科技股份有限公司 | Polypropylene composition with super thermal-oxidative aging resistance, and preparation method and application thereof |
| CN115895118A (en) * | 2022-12-08 | 2023-04-04 | 安庆会通新材料有限公司 | Solvent-resistant floating fiber reinforced polypropylene material, preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108892373A (en) * | 2018-07-30 | 2018-11-27 | 合肥利裕泰玻璃制品有限公司 | A kind of glass material and preparation method thereof |
| CN109181110A (en) * | 2018-09-30 | 2019-01-11 | 南京聚隆科技股份有限公司 | A kind of thin-walled air conditioning for automobiles material and preparation method thereof |
| CN112552583A (en) * | 2019-09-26 | 2021-03-26 | 合肥杰事杰新材料股份有限公司 | Environment-friendly flame-retardant polypropylene composition and preparation method thereof |
| CN110903543A (en) * | 2019-10-14 | 2020-03-24 | 中广核俊尔（上海）新材料有限公司 | Polypropylene material for LFT-D-IM technology and preparation method thereof |
| CN111154180A (en) * | 2019-12-17 | 2020-05-15 | 会通新材料股份有限公司 | Polypropylene glass fiber material with good appearance and low warpage and preparation method thereof |
| CN113061303A (en) * | 2020-01-02 | 2021-07-02 | 合肥杰事杰新材料股份有限公司 | Glass fiber reinforced polypropylene material and preparation method thereof |
| CN111592715A (en) * | 2020-05-18 | 2020-08-28 | 宁波泰甬汽车零部件有限公司 | High-fineness extrusion-grade modified polypropylene material and automobile outer water cutter |
| CN111592715B (en) * | 2020-05-18 | 2022-12-23 | 宁波泰甬汽车零部件有限公司 | High-fineness extrusion-grade modified polypropylene material and automobile outer water cutter |
| CN114437454A (en) * | 2020-11-03 | 2022-05-06 | 苏州荣昌复合材料有限公司 | 5G composite material and preparation method thereof |
| CN112521686A (en) * | 2020-11-27 | 2021-03-19 | 金发科技股份有限公司 | Glass fiber reinforced polypropylene composition and preparation method and application thereof |
| CN112552590A (en) * | 2020-12-09 | 2021-03-26 | 上海普利特复合材料股份有限公司 | Talcum powder/glass fiber modified polypropylene composite material for gas-assisted molding and preparation method thereof |
| CN112745576A (en) * | 2020-12-30 | 2021-05-04 | 上海聚威新材料股份有限公司 | High-heat-resistance and high-weather-resistance long glass fiber reinforced polypropylene material and preparation method thereof |
| CN113185809A (en) * | 2021-03-23 | 2021-07-30 | 会通新材料股份有限公司 | Heat-resistant full-biodegradable composite material for thin-wall injection molding product and preparation method thereof |
| CN113185809B (en) * | 2021-03-23 | 2022-03-22 | 会通新材料股份有限公司 | Heat-resistant full-biodegradable composite material for thin-wall injection molding product and preparation method thereof |
| CN115725135A (en) * | 2022-10-28 | 2023-03-03 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
| CN115725135B (en) * | 2022-10-28 | 2023-11-10 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
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| CN115895118B (en) * | 2022-12-08 | 2024-03-12 | 安庆会通新材料有限公司 | Solvent-resistant floating fiber reinforced polypropylene material, preparation method and application |
| CN115785572A (en) * | 2022-12-13 | 2023-03-14 | 金发科技股份有限公司 | Polypropylene composition with super thermal-oxidative aging resistance, and preparation method and application thereof |
| CN115785572B (en) * | 2022-12-13 | 2023-11-14 | 金发科技股份有限公司 | Super thermo-oxidative aging resistant polypropylene composition and preparation method and application thereof |
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