CN114806054A - Infrared-transmitting anti-scratch master batch, and preparation method and application thereof - Google Patents
Infrared-transmitting anti-scratch master batch, and preparation method and application thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2333/12—Homopolymers or copolymers of methyl methacrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- 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
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
Abstract
The invention provides an infrared-transmitting anti-scratch master batch, a preparation method and application thereof, and relates to the technical field of resin modification; the master batch is prepared by uniformly mixing 100 parts of polymethyl methacrylate resin, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant in parts by weight and then using a double-screw extruder. The infrared-transmitting anti-scratch master batch prepared by the invention can be widely applied to the fields of polymethyl methacrylate or polycarbonate resin plates, films or injection molding parts and the like, has extremely high infrared transmittance while blocking visible light, and has obvious infrared-transmitting effect; when the polycarbonate resin is used in the polycarbonate resin, the surface pencil hardness of the material can be greatly improved, and the scratch resistance is improved.
Description
Technical Field
The invention relates to the technical field of resin modification, and particularly relates to an infrared-transmitting anti-scratch master batch, and a preparation method and application thereof.
Background
The polymethyl methacrylate resin (PMMA) has excellent light transmittance and surface pencil hardness, the light transmittance can reach more than 90%, and the refractive index of the conventional PMMA is 1.49; and, since acrylate exists in its molecular structure, PMMA also has excellent weather resistance. Polycarbonate (PC) is an amorphous polymer in a nearly colorless glassy state, has good heat resistance and high impact strength, and has a visible light transmittance of 88% and a refractive index of 1.58. Since PMMA and PC have the advantage of good light transmittance, the two materials are widely applied in the field of infrared transmitting materials; meanwhile, the PMMA and PC materials have beautiful pearl luster and metallic luster when forming a blend, and are widely applied to liquid crystal displays, lamp tubes, communication equipment shells, and electric appliances and packaging materials with higher requirements on surface hardness and glossiness. However, the blend obtained by mixing PMMA and PC by the conventional method is mainly used for improving the wear resistance, temperature resistance and mechanical strength of the product, and the transparency of the product cannot be reserved, so that the advantages of PMMA and PC cannot be combined by the conventional method to ensure the transparency.
For example, patent CN109721998A discloses an infrared-transmitting high-rigidity polycarbonate composition and a preparation method thereof, the method uses zinc sulfide to improve the infrared-transmitting performance of glass fiber reinforced silicon-containing PC resin, the method is limited to light-colored materials, and the infrared transmittance of the materials per se is high; the infrared transmitting material disclosed in patent CNCN105670265B proposes a scheme for improving the infrared transmittance of EVA toughened polycarbonate PC using KBr, which is also limited to light-colored or white materials.
It is known that heat is transmitted by infrared rays, and if more infrared rays are absorbed, the heat is converted into vibration energy and finally into heat energy. For a black material, the black material can absorb visible light and infrared rays due to the color characteristics of the black material, so that the heat in the black material is gathered, and the surface temperature is increased; the core problem of studying the infrared transmission performance of the black material is that the black material can absorb visible light and simultaneously transmit or reflect infrared rays, so that the material can not store heat and inhibit temperature rise.
Disclosure of Invention
The invention aims to provide an infrared-transmitting anti-scratch master batch, a preparation method and application thereof.
In order to achieve the above purpose, the invention provides the following technical scheme: the infrared-transmitting anti-scratch master batch comprises the following components in parts by weight: 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant.
Further, the infrared-transmitting toner is prepared by mixing, by mass, 7: 3: 5: 1, organic red powder, organic green powder, organic blue powder and organic yellow powder are compounded; the master batch presents the highest blackness value under the mass ratio.
Further, the polymethyl methacrylate is ultra-low molecular weight polymethyl methacrylate, the weather-resistant agent is a benzotriazole weather-resistant agent, and the antioxidant is a phosphite antioxidant.
The invention also discloses a preparation method of the infrared-transmitting anti-scratch master batch, which comprises the following steps:
(1) according to the mass ratio of 7: 3: 5: 1, weighing four toners of organic red, organic green, organic blue and organic yellow, and uniformly mixing to obtain the infrared-transmitting toner;
(2) respectively weighing 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant according to parts by weight, and uniformly mixing to obtain a mixed material; wherein, the polymethyl methacrylate is ultra-low molecular weight polymethyl methacrylate, the weather resisting agent is benzotriazole, and the antioxidant is phosphite antioxidant;
(3) and adding the mixed material into a double-screw extruder for melt extrusion, and performing water cooling, air cooling and grain cutting to obtain the infrared-transmitting anti-scratch master batch.
Further, the four toners in the step (1) and the components in the step (2) are uniformly mixed in a high-speed mixer, and the time for mixing for two times is 3-5 min; the rotating speed of the double-screw extruder in the step (3) is 200-500r/min, and the extrusion temperature is 190-220 ℃.
The invention also discloses an application of the infrared-transmitting and scratch-resistant master batch, which comprises the steps of carrying out blending modification granulation on the infrared-transmitting and scratch-resistant master batch and polycarbonate or polymethyl methacrylate, blending and extruding a plate, a film, a pipe, a bar and a profiled bar, and blending and directly carrying out injection molding on a single-layer or multi-layer co-extruded plate, film, pipe, bar and profiled bar.
Further, the blending ratio of the infrared-transmitting anti-scratch master batch to the polycarbonate or the polymethyl methacrylate is 10-40% of the mass ratio of the infrared-transmitting anti-scratch master batch.
According to the technical scheme, the technical scheme of the invention has the following beneficial effects:
the invention discloses an infrared-transmitting anti-scratch master batch, a preparation method and application thereof, wherein the master batch comprises, by weight, 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant, and is prepared by performing melt extrusion on a double-screw extruder, and performing water cooling, air cooling and grain cutting; the prepared infrared-transmitting anti-scratch master batch can be widely applied to the fields of polymethyl methacrylate or polycarbonate resin plates, films or injection molding parts and the like. Wherein, the infrared-transmitting toner is 7: 3: 5: 1, the organic red powder, the organic green powder, the organic blue powder and the organic yellow powder are compounded, so that the black master batch capable of blocking visible light has good infrared transmittance on the premise of preparing the black master batch, and further, the surface temperature of a black material is not increased during application, and the infrared transmittance effect is obvious.
According to the master batch, the ultra-low molecular weight polymethyl methacrylate is used as a master batch base material, on one hand, due to the fact that the molecular weight is low, the refractive index is closer to that of polycarbonate, and good transparency can be guaranteed when the ultra-low molecular weight polymethyl methacrylate is added into polycarbonate resin in a large amount, the polymethyl methacrylate can provide the polycarbonate with more excellent surface pencil hardness, a good scratch resistance function is achieved, and the ultra-low molecular weight polymethyl methacrylate can provide the added resin with excellent weather resistance when matched with a weather-resistant agent.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is an infrared absorption spectrum of each component of the infrared-transmitting toner.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Based on the research on the infrared transmission performance of the material in the prior art, the research is mainly focused on light-colored or white materials, and the infrared transmission performance of black materials is of little concern; the core of the infrared transmission performance problem of the black material is that the black material can absorb visible light and simultaneously transmit or reflect infrared rays, so that the material can not store heat, and the use performance of the material is not influenced by thermal stress formed in the material during application. Aiming at the problems, the invention provides the infrared-transmitting anti-scratch master batch, the preparation method and the application thereof.
The invention discloses an infrared-transmitting anti-scratch master batch which comprises the following components in parts by weight: 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant; wherein, the polymethyl methacrylate is ultra-low molecular weight polymethyl methacrylate, and polymethyl methacrylate with molecular weight of 5000-; the weather resisting agent is benzotriazole weather resisting agent, such as UV 360; the antioxidant is phosphite antioxidant, such as antioxidant 168; the infrared-transmitting toner is prepared from the following components in percentage by mass: 3: 5: 1, and the master batch presents the highest blackness value under the mass ratio. In the examples, the chemical composition of organic red powder is picene ketone, the chemical compositions of organic green and organic blue powder are anthraquinone, the chemical composition of organic yellow powder is quinophthalone, and fig. 1 shows the infrared absorption spectrum of each component of infrared transmitting toner, and the result shows that the above toner has no absorption peak in the near infrared band and shows good infrared transmission.
The infrared-transmitting anti-scratch master batch prepared by the invention can be applied to blending modification granulation with polycarbonate or polymethyl methacrylate, blending extrusion of plates, films, pipes, bars and profiled bars, single-layer or multi-layer co-extrusion of plates, films, pipes, bars and profiled bars, and blending direct injection molding to obtain a modified black material.
The preparation method, effect and application of the infrared-transmitting and scratch-resistant master batch of the present invention are further described with reference to the following examples. Table 1 shows the raw materials used in each example and comparative example, which are commercially available.
TABLE 1 raw materials used in examples and comparative examples
In each example, the infrared-transmitting scratch-resistant master batch is prepared according to the following preparation method and is injection-molded into a standard test sample, namely: (1) weighing four kinds of toner of organic red, organic green, organic blue and organic yellow according to the mass ratio, and uniformly mixing in a high-speed mixer for 3-5min to obtain the infrared-transmitting toner; (2) weighing methyl methacrylate, the infrared-transmitting toner, the weather-resistant agent and the antioxidant according to the set weight parts, and uniformly mixing for 3-5min in a high-speed mixer to obtain a mixed material; (3) adding the mixed material into a double-screw extruder for melt extrusion, and preparing infrared-transmitting anti-scratch master batches after water cooling, air cooling and grain cutting; the working parameters of the double-screw extruder are set to the rotating speed of 200-.
The test method of the infrared-transmitting anti-scratch master batch standard sample comprises the following steps:
surface pencil hardness test standard reference ISO 15184: 2012;
the light transmittance test standard can be referred to GB/T2410-2008, the test wavelength range is 380-760nm, and the test thickness is 1 mm;
the infrared transmittance test standard refers to GB/T34603-940 nm, the test wavelength range is 780-940nm, and the test thickness is 1 mm;
the color difference L value is obtained by using a color plate to test in a transmission mode under a spectrophotometer, and the test thickness is 1 mm; and (3) placing the test sample under the sunlight at noon for 2h, and testing the surface temperature by using a remote sensing temperature gun.
Table 2 test results for examples 1-3 of infrared transmitting scratch resistant masterbatches
| Raw materials | Example 1 | Example 2 | Example 3 |
| Ultra-low molecular weight PMMA | 100 | 100 | 100 |
| Infrared-transmitting toner | 1 | 2 | 3 |
| Antioxidant agent | 2 | 1.5 | 2 |
| Weather-resistant agent | 2 | 3 | 1 |
| Performance of | / | / | / |
| Hardness of surface pencil | 3H | 3H | 3H |
| Transmittance of visible light% | 1.5 | 0.8 | 0 |
| Infrared transmittance% | 34 | 25 | 21 |
| Value of L | 23.4 | 22.1 | 21.3 |
As shown in table 2, the infrared-transmitting scratch-resistant master batch prepared by the formula and the preparation method disclosed by the invention can fully block visible light, has good infrared transmittance, and has excellent scratch resistance. The master batch prepared in the example 2 and PC or PMMA are blended according to the corresponding proportion, then are extruded and granulated by a double screw, and are dried and then are injected into a standard test sample, and the corresponding examples, the comparative examples and the test results are shown in the following table 3.
Table 3 test results for examples 4-7 using infrared transmitting scratch resistant masterbatches
| Raw materials | Example 4 | Example 5 | Example 6 | Example 7 | Comparative example 1 | Comparative example 2 |
| PC | 90 | 70 | / | / | 98 | / |
| PMMA | / | / | 80 | 60 | / | 98 |
| Infrared-transmitting |
10 | 30 | 20 | 40 | / | / |
| Black masterbatch | / | / | / | / | 2 | 2 |
| Performance of | / | / | / | / | / | / |
| Hardness of surface pencil | HB | H | H | H | 2B | H |
| Transmittance of visible light% | 18.3 | 10.2 | 12.4 | 7.1 | 0 | 0 |
| Infrared transmittance% | 95 | 80 | 92 | 76 | 0 | 0 |
| Value of L | 27.4 | 27.2 | 26.5 | 26.1 | 26.8 | 23.6 |
| Surface temperature C | 57.3 | 59.7 | 56.2 | 61.6 | 66.3 | 65.2 |
By combining the embodiments 4 to 7, it can be seen that, after the infrared-transmitting scratch-resistant master batch is added into PC or PMMA in an amount of 10 to 40 mass percent, the infrared-transmitting scratch-resistant master batch still has very high infrared transmittance which can reach 95 percent on the premise that the material is black; meanwhile, the hardness of the surface pencil is improved from 2B to HB or H after the master batch is added into the PC, so that the grades are improved, and the scratch resistance of the modified material of the product is greatly improved. By combining the comparative example 1 and the comparative example 2, the surface temperature data of the sample after the direct solar irradiation is carried out for 2 hours can be obtained, compared with the conventional black master batch (generally carbon black), the infrared-transmitting scratch-resistant master batch prepared by the invention can well reduce the surface temperature of the material after being blended with PC or PMMA, and the fact that the polymethyl methacrylate and the weather resistant agent are matched to provide excellent weather resistance for the added PC or PMMA resin is shown.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. The infrared-transmitting anti-scratch master batch is characterized by comprising the following components in parts by weight: 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant.
2. The infrared-transmitting and scratch-resistant masterbatch according to claim 1, wherein the infrared-transmitting toner is prepared from a mixture of, by mass, 7: 3: 5: 1, organic red powder, organic green powder, organic blue powder and organic yellow powder are compounded; the master batch presents the highest blackness value under the mass ratio.
3. The IR-transmitting, scratch-resistant masterbatch according to claim 1, wherein the polymethylmethacrylate is an ultra-low molecular weight polymethylmethacrylate.
4. The infrared-transmitting anti-scratch masterbatch according to claim 1, wherein the weather resistant agent is a benzotriazole type weather resistant agent.
5. The infrared-transmitting and scratch-resistant masterbatch of claim 1, wherein the antioxidant is a phosphite antioxidant.
6. A preparation method of the infrared-transmitting anti-scratch master batch is characterized by comprising the following steps:
(1) according to the mass ratio of 7: 3: 5: 1, weighing four toners of organic red, organic green, organic blue and organic yellow, and uniformly mixing to obtain an infrared-transmitting toner;
(2) respectively weighing 100 parts of methyl methacrylate, 1-3 parts of infrared-transmitting toner, 1.5-3 parts of weather-resistant agent and 1-3 parts of antioxidant according to parts by weight, and uniformly mixing to obtain a mixed material; wherein, the polymethyl methacrylate is ultra-low molecular weight polymethyl methacrylate, the weather resisting agent is benzotriazole, and the antioxidant is phosphite antioxidant;
(3) and adding the mixed material into a double-screw extruder for melt extrusion, and performing water cooling, air cooling and grain cutting to obtain the infrared-transmitting anti-scratch master batch.
7. The method for preparing the infrared-transmitting and scratch-resistant master batch according to claim 6, wherein the four toners in the step (1) and the components in the step (2) are uniformly mixed in a high-speed mixer, and the mixing time is 3-5 min.
8. The method for preparing the infrared-transmitting and scratch-resistant master batch according to claim 6, wherein the rotation speed of the twin-screw extruder in the step (3) is 200-500r/min, and the extrusion temperature is 190-220 ℃.
9. The application of the infrared-transmitting and scratch-resistant master batch as claimed in any one of claims 1 to 5, which comprises carrying out blending modification granulation on the infrared-transmitting and scratch-resistant master batch and polycarbonate or polymethyl methacrylate, blending and extruding a plate, a film, a pipe, a bar, a profile, a single-layer or multi-layer co-extruded plate, film, pipe, bar and profile, and blending and directly injecting.
10. The use of the IR-transmitting and anti-scratch mother particle according to claim 9, wherein the blending ratio of the IR-transmitting and anti-scratch mother particle to the polycarbonate or polymethyl methacrylate is 10-40% by mass of the IR-transmitting and anti-scratch mother particle.
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| CN117264378A (en) * | 2023-11-23 | 2023-12-22 | 天津德高化成光电科技有限责任公司 | Epoxy resin composition for 940nm chip and preparation method and application thereof |
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