CN111057375A - Polyphenylene sulfide composite material with high strength and low flash - Google Patents
Polyphenylene sulfide composite material with high strength and low flash Download PDFInfo
- Publication number
- CN111057375A CN111057375A CN202010000088.2A CN202010000088A CN111057375A CN 111057375 A CN111057375 A CN 111057375A CN 202010000088 A CN202010000088 A CN 202010000088A CN 111057375 A CN111057375 A CN 111057375A
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- CN
- China
- Prior art keywords
- polyphenylene sulfide
- composite material
- high strength
- low flash
- sulfide composite
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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
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
Abstract
The invention provides a high-strength low-flash polyphenylene sulfide composite material, which comprises 20-90 wt% of linear polyphenylene sulfide, 2-20 wt% of cross-linked polyphenylene sulfide, 10-50 wt% of glass fiber, 0.5-3 wt% of flash inhibitor, 2-6 wt% of nucleating agent, 0.1-2 wt% of release agent and 0.3-5 wt% of processing aid.
Description
The technical field is as follows:
the invention relates to the technical field of high polymer materials, in particular to a polyphenylene sulfide composite material with high strength and low flash.
Background art:
polyphenylene Sulfide (PPS) has many unique properties due to its molecular structural specificity, which are mainly reflected in: excellent thermal stability, chemical stability, dimensional stability, corrosion resistance, excellent physical and mechanical properties of electrical property, good adhesive property, excellent flame retardance, good electrical property and capability of blending modification. The method has wide application in automobile manufacturing, electronics and electrics, chemical industry, instrument and aerospace industry and the like.
However, due to the existence of a large number of benzene rings on the PPS main chain, the rigidity of the material is increased, so that the unmodified polyphenylene sulfide material has larger brittleness and poorer mechanical properties, and the application of the material is greatly limited. The mechanical properties of polyphenylene sulfide can be improved by modifying it with glass fibers or inorganic mineral fillers.
The easy formation of flash during injection molding is a problem in the processing of polyphenylene sulfide, and it is good in fluidity, and occurs when molten polyphenylene sulfide polymer flows into a mold or into fine gaps or gaps between parts of the mold during injection molding. After the molded part is removed from the mold, the part must be trimmed or otherwise cleaned to remove flash from the part. This process is time consuming and laborious and therefore adversely affects the forming process, and often the appearance of the part. Therefore, a method is desired to reduce the tendency of the polyphenylene sulfide composite to flash during injection molding.
Chinese patent CN107189438A discloses an antibacterial low-warpage low-flash PPS composite material and a preparation method thereof, wherein an amorphous resin polyphenylene oxide material is introduced into the composite material, so that the flowability of the material is reduced, and the possibility of flash generation is reduced. The method has the defects of material compatibility, difficult processing and the like.
Chinese patent No. 102481714a discloses a method for producing an injection-molded article by injection-molding a polyphenylene sulfide resin composition at a mold temperature of 100 ℃ or lower using a mold having a heat-insulating layer of polyimide resin. The amount of burrs generated during the production of a molded article can be suppressed, and a molded article having high crystallinity can be obtained. The present invention has certain limitations.
The invention content is as follows:
the invention aims to provide a polyphenylene sulfide composite material with high strength, low flash and quick crystallinity by modifying a polyphenylene sulfide material aiming at the defects in the prior art.
The technical scheme adopted by the invention is as follows: a polyphenylene sulfide composite material with high strength and low flash is prepared from the following components in percentage by weight:
20-90% of linear polyphenylene sulfide;
2-20% of cross-linked polyphenylene sulfide;
10-50% of glass fiber;
0.5-3% of a flash inhibitor;
1-5% of a nucleating agent;
0.2-2% of a release agent;
0.3-5% of processing aid.
Further, the melt flow rate of the linear polyphenylene sulfide resin is 200-500g/10min, and the test conditions are 316 ℃ and 5 kg.
Further, the melt flow rate of the crosslinking type polyphenylene sulfide resin is 10-100g/10min, and the test conditions are 316 ℃ and 5 kg. The crosslinked polyphenylene sulfide can be obtained by crosslinking linear polyphenylene sulfide resin at 200-280 ℃ for 0.1-2 hours in the presence of oxygen.
Furthermore, the glass fiber is chopped alkali-free glass fiber, and the diameter of each monofilament is 7-15 um. The surface of the glass fiber may be treated with a coupling agent.
Further, the flying inhibitor is maleimide.
Further, the release agent is polyethylene wax, the acidity value of the release agent is 70-100 mgKOH/g, and the dropping point is 60-90 ℃.
Further, the nucleating agent is formed by mixing talcum powder or boron nitride and dibutyl adipate, and the mixing ratio is 2: 1.
furthermore, the particle size of the talcum powder is 0.5-1 u, the particle size of the boron nitride is 1-5 um, and the talcum powder is in a hexagonal crystal form.
Furthermore, one or a mixture of whiskers and minerals is further added into the composite material.
Further, other additives such as antioxidants, plasticizers, stabilizers, mold release agents, fillers, dyes, pigments and other resins imparting other characteristics may be further contained as long as the effects of the present invention are not impaired.
The method for preparing the polyphenylene sulfide composite material having high strength and low flash according to the present invention is not particularly limited, and the rapidly-crystallized polyphenylene sulfide composite material of the present invention can be prepared by kneading with a kneading machine such as an extruder (single-screw or twin-screw extruder), a hot roll, a kneader, a mixer, etc., among which, from the viewpoint of production efficiency, it is preferable to prepare a blend with a single-screw or twin-screw extruder, and the extrusion temperature is usually 280-. The order in which the individual components of the invention are mixed is generally not critical and can be determined by one of ordinary skill in the art.
The invention has the following beneficial effects: the polyphenylene sulfide composite material with high strength and low flash provided by the invention has the advantages of good mechanical property, small flash property, short molding period and the like, and can be widely applied to parts of automobiles, electronic and electric appliances, machinery and the like.
The specific implementation mode is as follows:
the present invention will be further described in detail with reference to the following examples, but the present invention should not be limited to these examples.
The compounds prepared in the examples were injection molded in standard sizes into test bars, and the physical properties in the examples were respectively tested according to the International Standard (ISO).
Evaluation of flash length:
the flash was formed at the end of the sample piece by injection molding using a 80X10X4mm sample piece, the length of the flash was compared with a digital magnifier, the flash length of 5 samples was measured, and the average flash length was taken as the flash length.
And (3) testing the crystallization temperature:
the crystallization temperature of the polyphenylene sulfide composite material is tested by Differential Scanning Calorimetry (DSC), and a sample is firstly heated to 310 ℃, kept at the constant temperature for 3 minutes and then cooled to 50 ℃ at the speed of 10 ℃/min.
The invention is verified by the following examples:
linear polyphenylene sulfide (PPS): GACO5 melt flow rate of 370g/10min, Chongqing poly lion new material;
crosslinking type polyphenylene sulfide: the melt flow rate is 50g/10 min;
maleimide: is sold on the market;
glass fiber ECS309A, production of international composite new material for Chongqing;
nucleating agent 1: the talcum powder and dibutyl adipate are mixed according to the weight ratio of 2: 1 in proportion;
nucleating agent 2: boron nitride and dibutyl adipate were mixed according to a ratio of 2: 1 in proportion;
releasing agent: polyethylene wax Licolub CE 2;
coupling agent: KH 560.
The invention is verified by the following examples, and the detailed data results are shown in the following table:
examples 1-5 formulation tables and Performance test results
From the experimental results of the above examples, it is obvious that the crystallization temperature of the polyphenylene sulfide composite material with high strength and low flash is obviously improved, and the length of the flash is obviously reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. Modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (10)
1. The polyphenylene sulfide composite material with high strength and low flash is characterized in that: the composite material comprises the following components in percentage by weight:
20-90% of linear polyphenylene sulfide;
2-20% of cross-linked polyphenylene sulfide;
10-50% of glass fiber;
0.5-3% of a flash inhibitor;
1-5% of a nucleating agent;
0.2-2% of a release agent;
0.3-5% of processing aid.
2. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the melt flow rate of the linear polyphenylene sulfide resin is 200-500g/10min, and the test conditions are 316 ℃ and 5 kg.
3. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the melt flow rate of the crosslinking polyphenylene sulfide resin is 10-100g/10min, and the test conditions are 316 ℃ and 5 kg.
4. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the glass fiber is chopped alkali-free glass fiber, and the diameter of each monofilament is 7-15 um.
5. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the flying inhibitor is maleimide.
6. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the release agent is polyethylene wax, the acidity value of the release agent is 70-100 mgKOH/g, and the dropping point is 60-90 ℃.
7. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the nucleating agent is formed by mixing talcum powder or boron nitride and dibutyl adipate in a mixing ratio of 2: 1.
8. the polyphenylene sulfide composite material with high strength and low flash as claimed in claim 7, wherein: the particle size of the talcum powder is 0.5-1 u, the particle size of the boron nitride is 1-5 um, and the talcum powder is in a hexagonal crystal form.
9. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: one or a mixture of whiskers and minerals is further added into the composite material.
10. The polyphenylene sulfide composite material with high strength and low flash as claimed in claim 1, wherein: the processing aid is one or a mixture of an antioxidant, a coupling agent, a plasticizer, a stabilizer, a mold release agent, a dye, a pigment and a filler as an additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010000088.2A CN111057375A (en) | 2020-01-01 | 2020-01-01 | Polyphenylene sulfide composite material with high strength and low flash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010000088.2A CN111057375A (en) | 2020-01-01 | 2020-01-01 | Polyphenylene sulfide composite material with high strength and low flash |
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| CN111057375A true CN111057375A (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010000088.2A Pending CN111057375A (en) | 2020-01-01 | 2020-01-01 | Polyphenylene sulfide composite material with high strength and low flash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748207A (en) * | 2020-07-08 | 2020-10-09 | 四川明道和化学新材料有限公司 | Polyphenylene sulfide enhanced lubricating composite granules and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03197562A (en) * | 1989-12-26 | 1991-08-28 | Toray Ind Inc | Polyphenylene sulfide resin composition |
| US5378749A (en) * | 1991-08-03 | 1995-01-03 | Bayer Aktiengesellschaft | Blends of PAS, nitroarylketo compounds and maleic imides |
| CN108587165A (en) * | 2018-04-16 | 2018-09-28 | 南京真宸科技有限公司 | A kind of rapid crystallization polyphenyl thioether composite material |
-
2020
- 2020-01-01 CN CN202010000088.2A patent/CN111057375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03197562A (en) * | 1989-12-26 | 1991-08-28 | Toray Ind Inc | Polyphenylene sulfide resin composition |
| US5378749A (en) * | 1991-08-03 | 1995-01-03 | Bayer Aktiengesellschaft | Blends of PAS, nitroarylketo compounds and maleic imides |
| CN108587165A (en) * | 2018-04-16 | 2018-09-28 | 南京真宸科技有限公司 | A kind of rapid crystallization polyphenyl thioether composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748207A (en) * | 2020-07-08 | 2020-10-09 | 四川明道和化学新材料有限公司 | Polyphenylene sulfide enhanced lubricating composite granules and preparation method thereof |
| CN111748207B (en) * | 2020-07-08 | 2023-04-07 | 四川明道和化学新材料有限公司 | Polyphenylene sulfide enhanced lubricating composite granules and preparation method thereof |
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Application publication date: 20200424 |
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