CN109135276B - Anti-warping high-temperature-resistant reinforced polyamide composition and preparation method thereof - Google Patents
Anti-warping high-temperature-resistant reinforced polyamide composition and preparation method thereof Download PDFInfo
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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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
- C08K3/16—Halogen-containing compounds
- C08K2003/168—Zinc halides
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a warpage-resistant high-temperature-resistant reinforced polyamide composition, which comprises the following components in percentage by weight: 13.58 to 82.98% of at least one semi-crystalline polyamide; 2-20% of at least one non-crystalline semi-aromatic polyamide; 0.01 to 5 percent of metal salt compound; 15-60% of filler; 0.01-12% of polyamide modifier. The polyamide composition of the present invention is superior in mechanical properties and surface appearance to the conventional polyamide compositions containing metal salts and highly branched compounds, and has various improved physical properties and moldability, including improvement in surface appearance of mold parts.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a warping-resistant high-temperature-resistant reinforced polyamide composition and a preparation method thereof.
Background
Polyamides are widely used in molding manufacturing including injection molding, extrusion molding and compression molding because of their excellent mechanical, physical and chemical properties to provide high quality products. In order to meet the increasing demands in engineering applications, the mechanical, physical and chemical properties of polyamides are improved by conventional means by modifications, such as by adding toughening agents, especially reinforcing agents. For example, heat resistance, mechanical properties, dimensional stability, creep resistance and fatigue resistance can be improved by adding fillers such as glass fibers and mineral fillers, more excellent characteristics can be obtained by modification or cost reduction can be achieved.
In order to obtain materials with reliable properties, it is often necessary for the material to have sufficient mechanical strength, and therefore reinforcing agents are often added to polyamide materials, the most common being glass fibres, in amounts even up to 60% by weight. The addition of glass fiber can cause the polyamide to have some surface defects including fiber floating and flow mark phenomena generated during molding and differences of colors and surface gloss on different areas. One tries to solve these problems caused by high loading and can be essentially divided into three methods. The first method is to increase the processing flowability of the polyamide by adding hyperbranched compounds, which can be added directly before or during the polymerization, or synthesized by adding polyfunctional compounds capable of reacting with the polyamide groups, such as, for example, U.S. Pat. nos. US20090149590a1, US6160080A and US6525166B 1; the second method is to lower the processing temperature by lowering the melting temperature of the polyamide, thereby reducing the gases generated during thermal decomposition and its decomposition. This process can be obtained by adding a comonomer during the polycondensation, and US patent US5639819A describes the preparation of polyamides by introducing 2-methyl-cyclopentanediamine as comonomer, and polymerizing an aliphatic diamine with an aliphatic dicarboxylic acid. The melting temperature of this polyamide depends on the content of 2-methyl-cyclopentanediamine. Polycaprolactam-hexamethylene adipamide as a polyamide copolymer is commonly used to improve the surface appearance of the mold and also to facilitate the reduction of the melting temperature, as in US6416704B 1. The gradual use of low melting temperature blend components is used to improve processing flow and enable higher loadings. For example, surface appearance improvement of composite materials based on nylon 66 and nylon 6 has become a conventional approach. Third, other special forms of glass fibers than ordinary glass fibers are believed to provide several advantages to the reinforcement material, such as non-circular cross-section glass fibers, flat glass fibers, and finely ground glass fibers. US7135520B2 discloses a PA6 composite blended with chopped glass fibers and finely ground glass fibers, having a better appearance than the corresponding PA to which chopped glass fibers are added; US20080167415a1 discloses a composite of a crystalline aliphatic polyamide and an amorphous or semi-crystalline polyamide reinforced with flat glass fibers (the ratio of the maximum to the minimum diameter of the cross section is greater than 2), which shows advantages in terms of mechanical properties, appearance and processing with respect to polyamides reinforced with glass fibers of circular cross section.
However, the polyamide composition obtained by the above method has some disadvantages, for example, finely ground glass fiber is not favorable for improving mechanical properties, shaped glass fiber such as flat glass fiber is expensive, special requirements for nylon structure are required, raw materials are not easily available, and the like.
Disclosure of Invention
The object of the present invention is to solve the above problems and to provide a warpage-resistant high temperature-resistant reinforced polyamide composition capable of having various improved physical properties and moldability, exceeding the existing materials in mechanical properties and surface appearance.
The purpose of the invention is realized as follows:
the invention relates to a warpage-resistant high-temperature-resistant reinforced polyamide composition, which comprises the following components in percentage by weight:
13-82.98% of at least one semi-crystalline polyamide;
2-20% of at least one non-crystalline semi-aromatic polyamide;
0.01 to 5 percent of metal salt compound;
15-60% of filler;
0.01 to 12.0 percent of polyamide modifier;
the semi-crystalline polyamide is obtained by polycondensation of at least one aliphatic diamine containing 4 carbon atoms and at least one dicarboxylic acid chosen from aliphatic dicarboxylic acids containing 6 to 12 carbon atoms, or from aromatic polyamides comprising terephthalic acid, isophthalic acid, phthalic acid, methyl terephthalic acid and naphthalene dicarboxylic acid;
the non-crystalline semi-aromatic polyamide is polymerized by at least one aliphatic and/or aromatic diamine and at least one aliphatic and/or aromatic dicarboxylic acid;
the metal salt compound is a halide salt of a metal element of main group I-II or transition group I-II.
The aliphatic diamine monomer for synthesizing the semi-crystalline polyamide in the anti-warping high-temperature-resistant reinforced polyamide composition comprises one of tetramethylenediamine, pentamethylenediamine, ethylenediamine, octamethylenediamine, decamethylenediamine, 2-methylpentanediamine, 2-ethyltetramethylenediamine, 2-methyloctylamine and trimethylhexamethylenediamine.
The dicarboxylic acid monomer for synthesizing the semi-crystalline polyamide in the above-mentioned warpage-resistant high temperature-resistant reinforced polyamide composition includes aliphatic polyamide having 6 to 12 carbon atoms and aromatic dicarboxylic acid.
The semi-crystalline polyamide in the anti-warping high temperature resistant reinforced polyamide composition is an aminocarboxylic acid type homopolymer, and the repeating units of the aminocarboxylic acid type homopolymer are derived from lactam and aminocarboxylic acid.
The non-crystalline semi-aromatic polyamide in the anti-warping high temperature resistant reinforced polyamide composition contains repeating units generated by terephthalic acid (I), a mixture (II) of terephthalic acid and another dicarboxylic acid and aliphatic diamine (III);
the dicarboxylic acid comprises one of isophthalic acid, phthalic acid, dimethyl terephthalic acid, naphthalene dicarboxylic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and dodecanedioic acid;
the aliphatic diamine is at least one selected from the group consisting of 1, 3-propanediamine, 1, 4-butanediamine, 1, 5-pentanediamine, 2-ethylbutanediamine, hexanediamine, pentanediamine, 2, 4-glycidenediamine, 2,4, 4-trimethylhexanediamine, bis (4-aminocyclohexyl) methane, isophoronediamine, diaminodicyclohexylmethane, 2-bis (p-aminocyclohexyl) propane and 1, 6-diamino-2, 2, 4-trimethylhexane.
The non-crystalline semi-aromatic polyamide in the anti-warping high temperature resistant reinforced polyamide composition comprises repeating units derived from m-phenylenediamine, p-xylylenediamine and dicarboxylic acid.
The non-crystalline semi-aromatic polyamide in the anti-warping high temperature resistant reinforced polyamide composition is a homopolymer, a copolymer, a terpolymer and/or a polymer composed of three different repeating units.
The non-crystalline semi-aromatic polyamide in the above-mentioned warpage-resistant high temperature-resistant reinforced polyamide composition comprises repeating units derived from a lactam and/or an aminocarboxylic acid.
The metal salt compound in the anti-warping high-temperature-resistant reinforced polyamide composition is selected from at least one of calcium chloride, lithium chloride, sodium chloride, potassium chloride, zinc chloride, copper chloride and corresponding bromide and iodide.
The filler in the anti-warping high-temperature-resistant reinforced polyamide composition is fiber, powder, platelet, solid or hollow body, microsphere and acicular mineral compound.
The polyamide modifier in the anti-warping high-temperature-resistant reinforced polyamide composition is at least one selected from an antioxidant, a stabilizer, a nucleating agent, a lubricant, a release agent, a pigment, a dye, a combustion improver, an antistatic agent and a toughening agent.
The antioxidant and the stabilizer are used in combination in the anti-warping high-temperature-resistant reinforced polyamide composition;
the antioxidant is a copper compound, preferably copper iodide;
the stabilizer is an alkali metal salt, preferably potassium iodide.
The toughening agent in the anti-warping high-temperature-resistant reinforced polyamide composition is at least one selected from ionomer and carboxyl functionalized polyolefin.
The invention also provides a preparation method of the anti-warping high-temperature-resistant reinforced polyamide composition, which comprises the following steps:
(1) preparing raw materials according to the following components in percentage by weight:
13-82.98% of at least one semi-crystalline polyamide;
2-20% of at least one non-crystalline semi-aromatic polyamide;
0.01 to 5 percent of metal salt compound;
15-60% of filler;
0.01 to 12 percent of polyamide modifier;
(2) blending the above components and filler simultaneously or continuously;
(3) and (3) melting and uniformly blending the blend obtained in the step (2) by using a screw extruder.
A polyamide composition of the present invention is superior in mechanical properties and surface appearance to those of conventional polyamide compositions containing a metal salt (alkali metal halide and/or alkali metal halide), a highly branched compound, and has various improved physical properties and moldability, including improvement in surface appearance of mold parts.
Detailed Description
The present invention will be further described with reference to the following examples.
The information on the raw materials used in the examples of the present invention and the comparative examples is as follows:
PA 66: EPR24, available from the Neuma group;
PA 6: m2400, purchased from Xinhui Midada, Guangdong;
PA ACM 12: purchased from the wide boundless of Shandong;
PA MXD 6: purchased from the wide boundless of Shandong;
PA 6/66: H55Z, available from honeywell;
glass fiber: ECS301HP-3, purchased from Chongqing International fiberglass;
a toughening agent: carboxylic anhydride grafted ethylene- α -octene copolymer, Fusabond N493, available from dupont;
zinc chloride: ZnCl2Weifang, Dongsheng chemical Limited;
lithium chloride: LiCl, lithium available from shanghai;
calcium chloride: CaCl2Purchased from jinxing chemical;
thermal stabilizer: CuI and KI;
lubricant: licomont Nav101, available from Clariant;
carbon black: m717 from Cabot.
The compositions and contents of comparative examples 1 to 13 and examples 1 to 7 are shown in Table 1:
TABLE 1 comparative examples 1-13 and examples 1-7 components and amounts
| Numbering | A | The proportion of the component A is% | B | The proportion of the component B is% | Proportion of toughening agent, weight The content of | Proportion of glass fiber The content of | LiCl ratio, weight The content of | ZnCl2Ratio and weight The content of | CaCl2Ratio and weight The content of |
| Comparative example 1 | PA6 | 48.58 | 50 | ||||||
| Comparative example 2 | PA6 | 73.58 | 10 | 15 | |||||
| Comparative example 3 | PA66 | 68.58 | 30 | ||||||
| Comparative example 4 | PA66 | 48.58 | 50 | ||||||
| Comparative example 5 | PA ACM12 | 68.58 | 30 | ||||||
| Comparative example 6 | PA ACM12 | 38.58 | 10 | 50 | |||||
| Comparative example 7 | PA6 | 38.56 | 10 | 50 | 0.02 | ||||
| Comparative example 8 | PA6 | 73.08 | 10 | 15 | 0.5 | ||||
| Comparative example 9 | PA66 | 57.08 | 10 | 30 | 1.5 | ||||
| Comparative example 10 | PA66 | 38.58 | PA6/ 66 | 20 | 10 | 30 | |||
| Comparative example 11 | PA66 | 37.08 | PA6/ 66 | 20 | 10 | 30 | 1.5 | ||
| Comparative example 12 | PA66 | 47.58 | PA6/ 66 | 10 | 10 | 30 | 1.0 | ||
| Comparative example 13 | PA66 | 28.58 | PAMXD 6 | 10 | 10 | 50 | |||
| Example 1 | PA66 | 26.58 | PAMXD 6 | 10 | 10 | 50 | 2.0 | ||
| Example 2 | PA66 | 47.58 | PAMXD 6 | 10 | 10 | 30 | 1.0 | ||
| Example 3 | PA66 | 15.58 | PAMXD 6 | 20 | 10 | 50 | 3.0 | ||
| Example 4 | PA66 | 37.58 | PAMXD 6 | 20 | 10 | 30 | 1.0 | ||
| Example 5 | PA66 | 25.58 | PAMXD 6 | 10 | 10 | 50 | 3.0 | ||
| Example 6 | PA66 | 37.58 | PAMXD 6 | 20 | 10 | 30 | 1.0 | ||
| Example 7 | PA66 | 25.58 | PAMXD 6 | 10 | 10 | 50 | 3.0 |
The contents of the other components are as follows: 0.02% of CuI and 0.1% of KI, 0.3% of lubricant, 1.0% of carbon black.
The performance test method comprises the following steps:
the properties of the material were measured according to the following procedure:
the tensile properties, i.e.tensile strength, tensile modulus, of the polyamide compositions were measured in accordance with ISO 527, using tensile bars of 172mm X10 mm X4 mm injection molded using Krauss-Maffei KM 125-390C 2. The process parameters of the injection molding are that for nylon 66, the temperature of a material barrel is 275 ℃ and 295 ℃; for nylon 6, the barrel temperature was 235-: the temperature of the die is 60-80 ℃: the filling speed is 20-30 mm/s; the pressure is maintained at 400-600 bar.
Measurement of surface gloss: the surface gloss of the polyamide composition was measured using a gloss meter using a 80mm by 50mm by 2mm injection molded plaque. The panels were injection molded using Krauss-Maffei KM 125-390C 2 under the following conditions: injection temperature was 280 ℃, mold temperature was 80 ℃, suitable injection pressure and back pressure. Measuring the surface gloss of the material from three angles of 20 degrees, 60 degrees and 85 degrees respectively, obtaining the average value of the surface gloss of the material through measurement in different directions, and calculating the smoothness through the following formula, wherein denominator is the surface gloss measured under the same process conditions by non-enhanced PA66 or PA6 under different angles and is respectively marked as Gb20, Gb60 and Gb85
Wherein G20, G60 and G85 are measured at 20 degrees, 60 degrees and 85 degrees, and are obtained by averaging the gloss values in different directions.
Surface appearance: the surface appearance of the polyamide composition was judged directly from the results seen with the naked eye and evaluated as "good" or "poor".
The results of the performance tests of comparative examples 1 to 13 and examples 1 to 7 are shown in Table 2:
TABLE 2 results of performance test of comparative examples 1 to 13 and examples 1 to 7
| Numbering | Yield strength/MPa | Tensile modulus/MPa | Level of surface gloss | Surface appearance |
| Comparative example 1 | 217 | 15500 | 0.10 | Difference (D) |
| Comparative example 2 | 86 | 3908 | 0.45 | Difference (D) |
| Comparative example 3 | 188 | 9550 | 0.11 | Difference (D) |
| Comparative example 4 | 228 | 15980 | 0.12 | Difference (D) |
| Comparative example 5 | 165 | 7500 | 0.25 | Difference (D) |
| Comparative example6 | 205 | 13560 | 0.17 | Difference (D) |
| Comparative example 7 | 225 | 16540 | 0.88 | Good taste |
| Comparative example 8 | 95 | 3955 | 0.91 | Good taste |
| Comparative example 9 | 193 | 10265 | 0.89 | Good taste |
| Comparative example 10 | 176 | 8719 | 0.77 | Good taste |
| Comparative example 11 | 185 | 9985 | 0.92 | Good taste |
| Comparative example 12 | 190 | 9987 | 0.88 | Good taste |
| Comparative example 13 | 225 | 16005 | 0.85 | Good taste |
| Example 1 | 232 | 16250 | 0.92 | Good taste |
| Example 2 | 193 | 10100 | 0.93 | Good taste |
| Example 3 | 238 | 16208 | 0.94 | Good taste |
| Example 4 | 203 | 10525 | 0.96 | Good taste |
| Example 5 | 242 | 16350 | 0.95 | Good taste |
| Example 6 | 198 | 10333 | 0.93 | Good taste |
| Example 7 | 239 | 15980 | 0.94 | Good taste |
The performance test results show that the anti-warping high temperature resistant reinforced polyamide composition has mechanical properties and surface appearance superior to those of the conventional polyamide composition containing metal salt and hyperbranched compound, and has various improved physical properties and moldability.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (14)
1. The anti-warping high-temperature-resistant reinforced polyamide composition is characterized by comprising the following components in percentage by weight:
13-82.98% of at least one semi-crystalline polyamide;
2-20% of at least one non-crystalline semi-aromatic polyamide;
0.01 to 5 percent of metal salt compound;
15-60% of filler;
0.01 to 12.0 percent of polyamide modifier;
the semi-crystalline polyamide is obtained by polycondensation of at least one aliphatic diamine containing 4 carbon atoms and at least one dicarboxylic acid chosen from aliphatic dicarboxylic acids containing 6 to 12 carbon atoms, or from aromatic polyamides comprising terephthalic acid, isophthalic acid, phthalic acid, methyl terephthalic acid and naphthalene dicarboxylic acid;
the non-crystalline semi-aromatic polyamide is polymerized by at least one aliphatic and/or aromatic diamine and at least one aliphatic and/or aromatic dicarboxylic acid;
the metal salt compound is a halide salt of which the metal element is a main group I-II or a transition group I-II.
2. The warp-resistant, high temperature-resistant reinforced polyamide composition of claim 1, wherein the aliphatic diamine monomer used to synthesize the semi-crystalline polyamide comprises one of tetramethylenediamine, pentanediamine, ethylenediamine, octanediamine, decamethylenediamine, 2-methylpentanediamine, 2-ethyltetramethylenediamine, 2-methyloctylamine, and trimethylhexamethylenediamine.
3. The warp-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, characterized in that the dicarboxylic acid monomers for synthesizing the semi-crystalline polyamide comprise an aliphatic polyamide containing 6 to 12 carbon atoms and an aromatic dicarboxylic acid.
4. The warpage-resistant, high temperature resistant reinforced polyamide composition of claim 1, wherein the semi-crystalline polyamide is an aminocarboxylic acid type homopolymer having repeating units derived from a lactam and an aminocarboxylic acid.
5. The warpage-resistant high temperature-resistant reinforced polyamide composition according to claim 1, wherein the non-crystalline semi-aromatic polyamide contains repeating units derived from terephthalic acid (I), a mixture of terephthalic acid and another dicarboxylic acid (II), and an aliphatic diamine (III);
the dicarboxylic acid comprises one of isophthalic acid, phthalic acid, dimethyl terephthalic acid, naphthalene dicarboxylic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and dodecanedioic acid;
the aliphatic diamine is at least one selected from 1, 3-propane diamine, 1, 4-butane diamine, 1, 5-pentane diamine, 2-ethyl butane diamine, hexane diamine, pentane diamine, 2, 4-epoxy glycerol diamine, 2,4, 4-trimethyl hexane diamine, bis (4-amino cyclohexyl) methane, isophorone diamine, diamino dicyclohexyl methane, 2-bis (p-amino cyclohexyl) propane and 1, 6-diamino-2, 2, 4-trimethyl hexane.
6. The warpage-resistant, high temperature-resistant reinforced polyamide composition of claim 1, wherein the non-crystalline semi-aromatic polyamide comprises repeating units derived from m-phenylenediamine, p-xylylenediamine, and a dicarboxylic acid.
7. The warpage-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, wherein the non-crystalline, semi-aromatic polyamide is a homopolymer, copolymer, terpolymer and/or a polymer consisting of three different repeating units.
8. The warpage-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, wherein the non-crystalline, semi-aromatic polyamide comprises repeating units derived from a lactam and/or an aminocarboxylic acid.
9. The warpage-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, wherein the metal salt compound is selected from the group consisting of calcium chloride, lithium chloride, sodium chloride, potassium chloride, zinc chloride, copper chloride and at least one of the corresponding bromides and iodides.
10. The warp-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, characterized in that the filler is a fiber, a powder, a platelet, a solid or hollow body, a microsphere, a needle-like mineral compound.
11. The warpage-resistant high temperature-resistant reinforced polyamide composition according to claim 1, wherein the polyamide modifier is at least one selected from the group consisting of an antioxidant, a stabilizer, a nucleating agent, a lubricant, a mold release agent, a pigment, a dye, a combustion improver, an antistatic agent, and a toughening agent.
12. A warpage-resistant, high temperature resistant reinforced polyamide composition according to claim 11, wherein the antioxidant and stabilizer are used in combination;
the antioxidant is a copper compound;
the stabilizer is an alkali metal salt.
13. The warpage-resistant, high temperature-resistant reinforced polyamide composition of claim 11, wherein the toughening agent is selected from at least one of an ionomer, a carboxyl-functionalized polyolefin.
14. A process for preparing a warpage-resistant, high temperature-resistant reinforced polyamide composition according to claim 1, comprising the steps of:
(1) preparing raw materials according to the following components in percentage by weight:
13-82.98% of at least one semi-crystalline polyamide;
2-20% of at least one non-crystalline semi-aromatic polyamide;
0.01 to 5 percent of metal salt compound;
15-60% of filler;
0.01 to 12 percent of polyamide modifier;
(2) blending the above components and filler simultaneously or continuously;
(3) and (3) melting and uniformly blending the blend obtained in the step (2) by using a screw extruder.
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| CN108276769A (en) * | 2018-01-12 | 2018-07-13 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
| CN108329678A (en) * | 2018-01-12 | 2018-07-27 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
| CN108329687A (en) * | 2018-01-12 | 2018-07-27 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
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| EP2927272B1 (en) * | 2014-03-31 | 2017-08-16 | Ems-Patent Ag | Polyamide moulding materials, method for their production and uses of these polyamide moulding materials |
| CN109071941A (en) * | 2016-05-04 | 2018-12-21 | Ems专利股份公司 | Polyamide moulding composition and thus manufactured moulded work |
| CN109135276B (en) * | 2018-08-23 | 2021-04-02 | 上海金发科技发展有限公司 | Anti-warping high-temperature-resistant reinforced polyamide composition and preparation method thereof |
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| CN108276769A (en) * | 2018-01-12 | 2018-07-13 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
| CN108329678A (en) * | 2018-01-12 | 2018-07-27 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
| CN108329687A (en) * | 2018-01-12 | 2018-07-27 | 金发科技股份有限公司 | A kind of Amilan polyamide resin composition and preparation method thereof |
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