CN113817316A - Semi-aromatic polyamide resin composition and preparation method and application thereof - Google Patents
Semi-aromatic polyamide resin composition and preparation method and application thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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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
- C08K2201/00—Specific properties of additives
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- C08K2201/004—Additives being defined by their length
Abstract
The invention provides a semi-aromatic polyamide resin composition, and a preparation method and application thereof. The semi-aromatic polyamide resin composition comprises the following components: polyamide resin, potassium titanate whisker, fibrous mineral, flow modifier and other auxiliary agents; in the ash content of the semi-aromatic polyamide resin composition, the content of titanium element is 10000-120000 ppm; the content of other metal elements is 5000-110000 ppm; the content ratio of the titanium element to other metal elements is 0.09 to 24. The semi-aromatic polyamide resin composition is compounded with potassium titanate whiskers and fibrous minerals, the proportion of titanium elements and other metal elements in ash content of the semi-aromatic polyamide resin composition is reasonably regulated and controlled, the surface smoothness of the semi-aromatic polyamide resin composition is improved, the self-dust-generation risk is reduced, the semi-aromatic polyamide resin composition can be applied to preparation of camera module products, and the definition life of the prepared camera module products is remarkably prolonged.
Description
Technical Field
The invention relates to the field of engineering plastics, and particularly relates to a semi-aromatic polyamide resin composition and a preparation method and application thereof.
Background
With the development of modern science and technology, imaging systems are rapidly popularized in daily life, and the key of the imaging systems is various lenses, such as mobile phone camera module lenses, notebook computer/AIO all-in-one machine lenses, monitoring lenses, vehicle-mounted lenses, scanner lenses, multimedia television built-in camera lenses and the like. The existing lens is modularized and is called as a camera module, and mainly comprises a lens, a voice coil motor, a photosensitive chip, a sensor, an infrared filter, a circuit board, a plastic lens bracket and other parts.
As an important component of the camera module, the plastic lens holder needs to have the following characteristics:
(1) heat resistance: the material needs to be resistant to lead-free reflow soldering temperature (SMT process, the highest temperature can reach 260 ℃) and the temperature when the imaging chip is bonded with the lens (the highest temperature can reach 150 ℃);
(2) adhesion: in the assembly process of the module, the bracket needs to be connected with other parts by adopting epoxy adhesive, so that the material needs to have good affinity with the epoxy adhesive;
(3) dimensional stability: as a lens carrier, a manufactured part needs to maintain good roundness in various environments to maintain the precision requirement of a camera module, and therefore, the material needs to have excellent dimensional stability of high and low temperature and humidity, low anisotropy and low linear expansion rate;
(4) formability: with the development of cameras, especially for mobile phone cameras, the number of lenses on a single mobile phone is gradually increased, the requirement for lightening is met, the product design gradually tends to thin-wall, and the plastic material is required to have high mold filling fluidity and low burr property;
(5) surface smoothness: the plastic material lens support not only plays a role in supporting the lens, but also plays a role in transmission and support when the lens is stretched and contracted, and the surface smoothness of the material has an important influence on the lubricating and wear-resisting properties in the transmission movement process, so that the material is required to have high surface smoothness so as to obtain excellent lubricating and wear-resisting properties;
(6) low self-dust-generation property: in the using process, the imaging effect of the camera will be reduced continuously along with the prolonging of the using time, the main reason is that the lens is polluted by granular dust (the size is larger than 10 μm), the granular dust is mainly from two aspects, one is external dust caused by the untight module packaging, the other important source is particles (the main component is filling materials in the plastic lens bracket) falling out due to the vibration or transmission friction of the plastic lens bracket, and therefore, as a lens bracket material, the camera lens should have the self-dust-generating characteristic as low as possible so as to keep the lens clean for a long time.
Among them, the above-mentioned characteristics (1) to (4) are satisfied by the preferable base resin, and it is still a problem in the industry that they have both high surface smoothness and low self-dust emission properties.
At present, in order to meet the lead-free reflow soldering temperature, special engineering plastics with high temperature resistance are generally used in the camera module industry, and semi-aromatic polyamide materials are the most common. The semi-aromatic polyamide material has excellent high temperature resistance, dimensional stability, good formability and good glue adhesion, but the product of the existing semi-aromatic polyamide material still has a serious dust problem during vibration and transmission friction, so that lens pollution is caused. In addition, the surface smoothness of the product of the existing semi-aromatic polyamide material is poor, so that the transmission resistance of the part is high when the lens is stretched, and the poor abrasion phenomenon can further cause the falling of filling material particles in the semi-aromatic polyamide material, so that the self-dust-generation problem is aggravated. For example, chinese patent (CN109943068A) discloses a polyamide resin composition comprising an aromatic polyamide resin PA6T, potassium titanate whiskers, and a mineral containing kaolin (not less than 30 wt%), which is formulated to have a high heat distortion temperature similar to that of a camera module material commonly used at present. However, the surface smoothness of the article obtained from the polyamide resin composition is general, and it is found by the test that the self-dust-formation problem is serious.
Therefore, it is urgently needed to develop a semi-aromatic polyamide composition product with high surface smoothness and low self-dust generation property to meet the market demand.
Disclosure of Invention
The invention aims to solve the problems of poor surface smoothness and high self-dust-forming property of a semi-aromatic polyamide composition product in the prior art, and provides a semi-aromatic polyamide resin composition which is compounded with potassium titanate whiskers and fibrous minerals, reasonably controls the proportion of titanium element and other metal elements in ash content of the semi-aromatic polyamide resin composition, improves the surface smoothness of the semi-aromatic polyamide resin composition and reduces the self-dust-forming risk.
Another object of the present invention is to provide a method for preparing the semi-aromatic polyamide resin composition.
Another object of the present invention is to provide an application of the semi-aromatic polyamide resin composition.
Another object of the present invention is to provide a semi-aromatic polyamide product.
In order to solve the technical problems, the invention adopts the technical scheme that:
a semi-aromatic polyamide resin composition comprising the following components: polyamide resin, potassium titanate whisker, fibrous mineral, flow modifier and other auxiliary agents; wherein, calculated by weight portion, 20-70 portions of polyamide resin, 0.1-5 portions of flow modifier and 0-3 portions of other auxiliary agents;
in the ash content of the semi-aromatic polyamide resin composition, the content of titanium element is 10000-120000 ppm; the content of other metal elements is 5000-110000 ppm; the content ratio of the titanium element to other metal elements is 0.09 to 24;
the polyamide resin is a blend resin of semi-aromatic polyamide, semi-aromatic polyamide and aliphatic polyamide.
The inventor of the invention researches and analyzes the reason of lens pollution of a camera module product under the actual working condition, and finds that through a large number of experiments, potassium titanate whisker and fibrous mineral are compounded in the semi-aromatic polyamide resin composition, and the ratio of titanium element to other metal elements in ash content of the semi-aromatic polyamide resin composition is reasonably controlled, so that the surface smoothness of the semi-aromatic polyamide resin composition is improved, and the risk of spontaneous dust generation is reduced; the titanium element in the semi-aromatic polyamide resin composition is derived from potassium titanate whiskers, and the other metal elements in the semi-aromatic polyamide resin composition are derived from fibrous minerals. The fiber mineral does not contain titanium element, or the amount of the titanium element in the fiber mineral is small and can be ignored.
The potassium titanate whiskers are needle-shaped single crystal fibers, are complete in crystallization, are small in size and large in specific surface area, and therefore can have good composite compatibility with polyamide, but the surface of a product prepared from the polyamide resin composition using the potassium titanate whiskers alone can show a plaque-shaped appearance defect due to poor dispersion of the potassium titanate whiskers in a system, and microscopic tests show that the product has high surface roughness, so that the transmission resistance of a part is increased when a lens is stretched, a poor abrasion phenomenon is generated, and the risk of lens pollution is increased.
The fibrous mineral is compounded in the system, the surface smoothness of the polyamide resin composition is obviously improved, and is closely related to the proportion of titanium element in ash content of the polyamide resin composition and metal element in the fibrous mineral, and the fibrous mineral in a micro mechanism is that on one hand, the viscosity of the system is improved, so that the shearing action of a screw on a melt of the composition is effectively transferred during extrusion processing, the dispersion/distribution condition of a filler is obviously improved, and therefore, the very excellent surface smoothness can be obtained; on the other hand, the metal elements on the fibrous mineral and the titanium elements in the potassium titanate whiskers have metal-metal interaction, the metal-metal interaction is beneficial to uniformly mixing two filling materials in the polyamide resin composition so as to better improve the surface smoothness of the product, and the fillers in the system form a network structure due to the metal-metal interaction, so that the fillers in the plastic bracket are prevented from falling off due to vibration or transmission friction in the use of the camera module to cause lens pollution.
Further, the inventor finds that the low dust generation performance is directly related to the ratio of the titanium element to the metal element in the fibrous mineral, a network structure of metal-metal interaction can be formed only when the ratio of the metal element is proper, and the mechanism is similar to a percolation network in a physical system, namely, the system changes to a certain degree in certain internal variables, a certain long-range correlation suddenly occurs in the system, and the property of the system changes greatly. Compared with fillers in spherical or flaky shapes or other shapes, the fibrous mineral is more firmly combined on the surface, the size of the filler part exposed outside the product is smaller than that of fillers in spherical or flaky shapes or other shapes due to the orientation of fibers in the injection molding process, the size of the falling particles is lower than 10 mu m even if the filler part is ground with other components, and the influence of small-size dust on the definition of a lens is small, so that the self-dust-removing performance of the material can be greatly optimized.
Ash content of the semi-aromatic polyamide resin composition of the present invention is obtained according to ISO 3451-1:2008 standard; the titanium element and other metal elements in the ash content of the semi-aromatic polyamide resin composition were measured by the ICP-AES method according to the US EPA3052:1996 standard.
In the polyamide resin of the present invention, the weight percentage of the semi-aromatic polyamide is 55% to 100%, preferably 80%.
The semi-aromatic polyamide is selected from one or more of PA6T/66, PA6I, PA6T/6I, PA6T/M5T, PA9T, PA9T/66, PA10T, PA10T/66, PA10T/10I, PA10T/1010, PA12T and PA 12I. The aliphatic polyamide is selected from one or more of PA6, PA66, PA610, PA612, PA1010, PA1012, PA1212, PA11 and PA 12.
Preferably, the semi-aromatic polyamide resin composition has an ash content of 20000 to 90000ppm of titanium element and 10000 to 80000ppm of other metal elements.
Preferably, the content ratio of the titanium element to other metal elements is 0.5 to 10; more preferably 1 to 5.
The other metal elements are one or more of calcium element, aluminum element or magnesium element.
The fibrous mineral is selected from one or more of calcium sulfate fiber, calcium silicate fiber, aluminum silicate fiber or sepiolite fiber. Preferably, the fibrous mineral is calcium sulfate fiber.
Preferably, the fibrous mineral has an average length of 60 to 450 μm and an aspect ratio of 20 to 30: 1.
The titanium element of the present invention is present in the semi-aromatic polyamide resin composition in the form of potassium titanate whiskers.
The potassium titanate whisker is fibrous, and the cross section of the potassium titanate whisker can be in various forms according to application requirements, such as circular, oval, rectangular, other special shapes and the like, and is preferably a fiber with a circular cross section.
The potassium titanate whisker has an average diameter of 0.1-1.5 μm and an average length of 5-80 μm. Preferably, the potassium titanate whiskers have an average diameter of 0.4 μm and an average length of 30 μm.
The flow modifier of the present invention can improve the mold filling fluidity of the semi-aromatic polyamide resin composition, can obtain a good mold transfer effect, and can improve the surface smoothness of a product. The flow modifier is selected from one or more of sodium montanate, calcium montanate, lithium stearate, calcium stearate, small molecule amide compounds, polyalcohol substances, polyamine substances, hyperbranched polymers, dendritic polymers and mixtures thereof. The flow modifier is a dendritic polyamide flow modifier.
Other additives described herein include, but are not limited to, ultraviolet light stabilizers, heat stabilizers, antioxidants, pigments, processing aids.
The preparation method of the semi-aromatic polyamide resin composition of the present invention comprises the steps of: the method comprises the following steps of uniformly mixing polyamide resin, a flow modifier and other additives, adding the mixture into a main feeding port of a double-screw extruder, adding potassium titanate whiskers into the double-screw extruder through a first side feeding machine, adding fibrous minerals into the double-screw extruder through a second side feeding machine, carrying out melt extrusion and granulation, and thus obtaining the semi-aromatic polyamide resin composition.
The invention also provides a semi-aromatic polyamide product prepared from the semi-aromatic polyamide resin composition. The semi-aromatic polyamide product prepared from the semi-aromatic polyamide resin composition has excellent surface smoothness in normal injection molding process, the surface smoothness is Ra value less than 0.15 mu m, and simultaneously has very excellent low self-dust-generation performance, and the dust generation rating is at least 2 (excellent).
Therefore, the semi-aromatic polyamide resin composition of the present invention should be used in the preparation of camera modules within the protection scope. The semi-aromatic polyamide resin composition provided by the invention can obviously prolong the definition life of the prepared camera module product, can meet the strict lens antifouling application requirement, and can effectively solve the problem of lens pollution caused by dust generated by a plastic bracket, which exists in the industry for a long time.
Compared with the prior art, the invention has the beneficial effects that:
the invention can lead the semi-aromatic polyamide resin composition to obtain excellent high surface smoothness and low self-dust-generation characteristic by adding the fibrous mineral into the semi-aromatic polyamide resin composition and reasonably controlling the proportion of the titanium element and other metal elements in the ash content of the semi-aromatic polyamide resin composition. The semi-aromatic polyamide resin composition can be applied to the preparation of camera module products, remarkably prolongs the definition life of the prepared camera module products, can meet the strict antifouling application requirement of lenses, and effectively solves the problem of lens pollution caused by dust emission of plastic supports existing in the industry for a long time.
Drawings
FIG. 1 is a surface microscopic image (30 times magnification) of a sample prepared in example 1;
FIG. 2 is a surface microscopic image (magnified 30 times) of a sample prepared in comparative example 2.
Detailed Description
The present invention will be further described with reference to the following embodiments. The starting materials in the examples and comparative examples are either commercially available or can be prepared by known methods. In the present specification, "part" and "%" represent "part by mass" and "% by mass", respectively, unless otherwise specified.
The manufacturers and designations of the raw materials used in the following examples and comparative examples are as follows:
semi-aromatic polyamide: PA6T/66, Jinfa science and technology, Inc.;
aliphatic polyamide: PA66, PA66 EPR24, the Chinese Neuma group;
LCP resin: type I LCP resin, jinfa science and technology, inc;
potassium titanate whisker 1: TISMO D, white needle-like fibers, circular cross-section, average diameter 0.4 μm, average length 30 μm, tsukamur chemical japan;
potassium titanate whisker 2: nano potassium titanate whisker with elliptic cross section, average diameter of 0.1 micron, average length of 5 micron, new electron technology of southeast Asia;
potassium titanate whisker 3: high-strength potassium titanate whiskers with a rectangular cross section, an average diameter of 1.5 μm and an average length of 80 μm, south-channel ao new electronics technology limited;
calcium sulfate fiber 1: DL-40H, white fiber, average diameter of 2 μm, average length of 60 μm, length-diameter ratio of 30:1, New Material Inc. Guangwei, Changzhou;
calcium sulfate fiber 2: NP-M01, white fiber, average diameter 0.7 μ M, average length 5 μ M, aspect ratio 7:1, Jiangxi Pear Pelargonium new Material science and technology Co., Ltd;
wollastonite: active wollastonite mineral fiber and gray white fiber, the average diameter is 10 μm, the average length is 200 μm, the length-diameter ratio is 20:1, Jiangxi Huajietai mineral fiber science and technology Limited;
aluminum silicate fiber: gray white fiber with average diameter of 7 μm, average length of 140 μm, length-diameter ratio of 20:1, Shandongtianhui refractory fiber Co., Ltd;
sepiolite fibers: sepiolite fibers, off-white fibers, average diameter 15 μm, average length 450 μm, aspect ratio 30:1, shijiazhuanhui mineral products ltd;
calcium carbonate: AC-MLT04, spherical particles, calcium carbonate raw powder with the average particle diameter (D50) of 1.55 mu m, Variegata chemical Co., Ltd;
kaolin: kaolin powder with a flaky shape and an average particle size (D50) of 3.55 μm, Shanghai harmonica New Material science and technology Co., Ltd;
flow modifier: CYD-816A, dendritic Polyamide flow modifier, Waishahi Product materials Co;
antioxidant: antioxidant 1010, basf corporation.
Examples and comparative examples
The contents of the components in the semi-aromatic polyamide resin compositions of examples 1 to 20 and comparative examples 1 to 9 are shown in tables 1 to 3, wherein a represents the weight percentage of the semi-aromatic polyamide; b represents the content of titanium element in ash; c represents the content of other metal elements (calcium or aluminum or magnesium) in the ash.
The preparation method of the semi-aromatic polyamide resin composition comprises the following steps: uniformly mixing the dried polyamide resin with a flow modifier and other additives by using a high-speed stirrer, accurately metering, adding the mixture into a main feeding port of a double-screw extruder, adding potassium titanate whiskers into the double-screw extruder through a first side feeding machine, adding fibrous minerals or other minerals into the double-screw extruder through a second side feeding machine, and performing melt extrusion and granulation through the double-screw extruder at a set temperature of 270-320 ℃ to obtain the semi-aromatic polyamide resin composition.
And (3) dehumidifying and drying the obtained semi-aromatic polyamide resin composition at 120 ℃ for 5 hours, setting the barrel temperature of an injection molding machine at 290-330 ℃, and preparing a sample for testing mechanical properties and preparing a smoothness and dustiness test sample by injection molding.
The titanium element of the ash content of the semi-aromatic polyamide resin composition of the examples is derived from potassium titanate whiskers, the other metal elements of the ash content such as calcium element, aluminum element or magnesium element are derived from fibrous minerals, the other components of the aromatic polyamide resin composition do not contain metal elements, or the metal content of the other components is much smaller than that of the potassium titanate whiskers and the fibrous minerals, and is negligible, and the ash content of the semi-aromatic polyamide resin composition is obtained according to ISO 3451-1:2008 standard. The mass ratio of the titanium element to other metal elements such as calcium element, aluminum element or magnesium element in the ash content of the semi-aromatic polyamide resin composition is measured by the ICP-AES method according to US EPA3052:1996 standard to obtain the content of the titanium element and the content of the other metal elements such as calcium element, aluminum element or magnesium element in the semi-aromatic polyamide resin composition, and the mass ratio of the titanium element to the other metal elements such as calcium element, aluminum element or magnesium element is calculated based thereon.
TABLE 1 EXAMPLES 1 TO 9 Contents of respective Components in semi-aromatic Polyamide resin compositions
TABLE 2 examples 10 to 20 contents of respective components in semi-aromatic polyamide resin composition
TABLE 3 content of each component in comparative examples 1 to 9 resin composition
Performance testing
The samples prepared in the above examples and comparative examples were tested in the following manner:
surface smoothness test: the surface smoothness, also called surface roughness or surface smoothness, is measured with reference to GB/T1031-2009, the surface roughness of a 40mm × 40mm × 1.0mm injection molded sample is measured using a profilometry, the surface roughness is evaluated using a neutral line system (profilometry), the arithmetic mean deviation Ra value of the profile is selected as a characterizing parameter, the sampling reference length lr is 2.5mm, and a rating length value of 5 × lr is selected during measurement to ensure the accuracy of the measurement, the unit of the arithmetic mean deviation Ra value is μm, the smaller the Ra value is, the better the test is.
Dust test of the article: placing an injection molding sample plate of 40mm multiplied by 1.0mm into deionized water held by a beaker, placing the beaker with the sample in an ultrasonic cleaning machine, setting the frequency at 30kHz, cleaning time at 10min and temperature at 30 ℃, after washing, taking out the solution of the cleaned sample plate and placing the solution in a liquid pool, testing the solution for 5min by using a liquid particle counter, counting the amount Fa of dust with the diameter of more than 10 mu m by using a software program, and taking the amount Fa as a characteristic parameter of the dust generation of the material, wherein the dust generation rating is defined as follows: fa < 5 for level 1 (excellent), Fa < 20 for level 2 (excellent), Fa < 20 for level 3 (good), Fa < 35 for level 3 (good), Fa < 50 for level 4 (middle), and Fa < 50 for level 5 (poor). The liquid particle counter is RION KS-42BF, and the ultrasonic cleaning machine is BK-240J. Where grades 1 and 2 are of low self-dust levels.
The results of the above tests are shown in table 4:
TABLE 4
From the above test results, it is understood that the samples obtained from the semi-aromatic polyamide resin compositions of all the above examples have excellent surface smoothness, i.e., Ra value less than 0.15 μm, while having very excellent low self-dust properties, i.e., dust generation rating of at least 2.
As can be seen from comparison of example 1 with comparative examples 1 to 2, the semi-aromatic polyamide resin composition in which spherical minerals or flaky minerals were selected significantly deteriorated in surface smoothness as compared with comparative examples 1 to 2, and the dust generation rating of the fibrous minerals selected in example 1 was 4 or 5, indicating that the sample was likely to generate dust during use. Further, when the surface of the sample of example 1 and comparative example 2 is observed under magnification (30 times magnification), as can be seen from the microscopic images of fig. 1 and fig. 2, the surface of the sample of example 1 is relatively smooth, while the surface of the sample of comparative example 2 has more filler exposed outside the surface, and thus it can be seen that the performance of the sample is greatly related to the bonding condition of the filler (potassium titanate whiskers and fibrous minerals) on the surface.
Comparing example 1 with comparative examples 3 to 6, it is found that when only titanium element or only calcium element (or aluminum element or magnesium element) is contained in the semi-aromatic polyamide resin composition, or when the mass ratio of titanium element to calcium element (or aluminum element or magnesium element) is out of the range of the present invention, the surface smoothness of the sample is poor, and the risk of dust generation is large. Comparing example 1 with comparative example 7, it is understood that when the matrix resin was changed to an LCP resin, excellent surface smoothness and low dust generation property could not be obtained at all.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A semi-aromatic polyamide resin composition, characterized by comprising the following components: polyamide resin, potassium titanate whisker, fibrous mineral, flow modifier and other auxiliary agents;
wherein, calculated by weight portion, 20-70 portions of polyamide resin, 0.1-5 portions of flow modifier and 0-3 portions of other auxiliary agents;
in the ash content of the semi-aromatic polyamide resin composition, the content of titanium element is 10000-120000 ppm; the content of other metal elements is 5000-110000 ppm;
the content ratio of the titanium element to other metal elements is 0.09 to 24;
the polyamide resin is semi-aromatic polyamide or blend resin of semi-aromatic polyamide and aliphatic polyamide.
2. The semi-aromatic polyamide resin composition according to claim 1, wherein the content of the titanium element is 20000 to 90000ppm, and the content of the other metal element is 10000 to 80000 ppm.
3. The semi-aromatic polyamide resin composition according to claim 1 or 2, wherein a content ratio of the titanium element to the other metal element is 0.5 to 10.
4. The semi-aromatic polyamide resin composition according to claim 3, wherein a content ratio of the titanium element to the other metal element is 1 to 5.
5. The semi-aromatic polyamide resin composition according to claim 1, wherein the other metal element is one or more of calcium element, aluminum element, or magnesium element.
6. The semi-aromatic polyamide resin composition according to claim 1 or 5, wherein the fibrous mineral is one or more selected from calcium sulfate fiber, calcium silicate fiber, aluminum silicate fiber, and sepiolite fiber.
7. The semi-aromatic polyamide resin composition according to claim 1, wherein the fibrous mineral has an average length of 60 to 450 μm and an aspect ratio of 20 to 30: 1.
8. A method for producing the semi-aromatic polyamide resin composition according to any one of claims 1 to 7, comprising the steps of: the method comprises the following steps of uniformly mixing polyamide resin, a flow modifier and other additives, adding the mixture into a main feeding port of a double-screw extruder, adding potassium titanate whiskers into the double-screw extruder through a first side feeding machine, adding fibrous minerals into the double-screw extruder through a second side feeding machine, carrying out melt extrusion and granulation, and thus obtaining the semi-aromatic polyamide resin composition.
9. Use of the semi-aromatic polyamide resin composition according to any one of claims 1 to 7 for preparing a camera module.
10. A semi-aromatic polyamide product comprising the semi-aromatic polyamide resin composition according to any one of claims 1 to 7.
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| CN114716820A (en) * | 2022-03-09 | 2022-07-08 | 珠海万通特种工程塑料有限公司 | Polyamide composition and preparation method and application thereof |
| CN115260758A (en) * | 2022-08-24 | 2022-11-01 | 横店集团得邦工程塑料有限公司 | High-reflectivity heat-aging-resistant PA10T material and preparation method thereof |
| WO2023016498A1 (en) * | 2021-08-12 | 2023-02-16 | 金发科技股份有限公司 | Semi-aromatic polyamide resin composition, preparation method therefor and application thereof |
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| CN113817316B (en) * | 2021-08-12 | 2023-09-26 | 金发科技股份有限公司 | Semi-aromatic polyamide resin composition and preparation method and application thereof |
-
2021
- 2021-08-12 CN CN202110926947.5A patent/CN113817316B/en active Active
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2022
- 2022-08-10 WO PCT/CN2022/111502 patent/WO2023016498A1/en unknown
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| JP2006257314A (en) * | 2005-03-18 | 2006-09-28 | Kuraray Co Ltd | Polyamide resin composition for molding led reflector and led reflector |
| JP2007106917A (en) * | 2005-10-14 | 2007-04-26 | Kuraray Co Ltd | Polyamide resin composition and its molded product |
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| CN105086430A (en) * | 2014-05-23 | 2015-11-25 | 尤尼蒂卡株式会社 | Polyamide resin composition and formation body thereof |
| WO2020184270A1 (en) * | 2019-03-12 | 2020-09-17 | 三井化学株式会社 | Flame-retardant polyamide resin composition |
| CN110922749A (en) * | 2019-10-26 | 2020-03-27 | 张家港大塚化学有限公司 | Preparation method of high-weather-resistance and high-reflectivity polyamide composite material for LED |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016498A1 (en) * | 2021-08-12 | 2023-02-16 | 金发科技股份有限公司 | Semi-aromatic polyamide resin composition, preparation method therefor and application thereof |
| CN114716820A (en) * | 2022-03-09 | 2022-07-08 | 珠海万通特种工程塑料有限公司 | Polyamide composition and preparation method and application thereof |
| CN115260758A (en) * | 2022-08-24 | 2022-11-01 | 横店集团得邦工程塑料有限公司 | High-reflectivity heat-aging-resistant PA10T material and preparation method thereof |
| CN115260758B (en) * | 2022-08-24 | 2024-01-09 | 横店集团得邦工程塑料有限公司 | High-reflectivity heat aging resistant PA10T material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023016498A1 (en) | 2023-02-16 |
| CN113817316B (en) | 2023-09-26 |
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