CN113667297B - Nylon composite material with low water absorption rate - Google Patents
Nylon composite material with low water absorption rate Download PDFInfo
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- CN113667297B CN113667297B CN202111033668.2A CN202111033668A CN113667297B CN 113667297 B CN113667297 B CN 113667297B CN 202111033668 A CN202111033668 A CN 202111033668A CN 113667297 B CN113667297 B CN 113667297B
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- 239000004677 Nylon Substances 0.000 title claims abstract description 68
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 68
- 229920001778 nylon Polymers 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000000945 filler Substances 0.000 claims abstract description 69
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 39
- 239000003365 glass fiber Substances 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 13
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 claims description 54
- 239000010445 mica Substances 0.000 claims description 44
- 229910052618 mica group Inorganic materials 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 44
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 38
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 35
- 229940095102 methyl benzoate Drugs 0.000 claims description 27
- 239000012188 paraffin wax Substances 0.000 claims description 27
- 239000000047 product Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 17
- 239000008116 calcium stearate Substances 0.000 claims description 17
- 235000013539 calcium stearate Nutrition 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 239000012265 solid product Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 5
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 26
- 239000002048 multi walled nanotube Substances 0.000 description 15
- 239000002994 raw material Substances 0.000 description 10
- 239000000454 talc Substances 0.000 description 9
- 235000012222 talc Nutrition 0.000 description 9
- 229910052623 talc Inorganic materials 0.000 description 9
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- 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
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
Abstract
The invention relates to the technical field of preparation of nylon materials, and particularly discloses a low-water-absorption nylon composite material. The low-water-absorption nylon composite material comprises the following components in parts by weight: 100-150 parts of nylon resin; 10-30 parts of chopped glass fiber; 1-5 parts of carbon nano tube; 30-50 parts of modified filler; 1-3 parts of lubricant. According to the invention, the prepared nylon composite material has excellent mechanical properties and antistatic properties by adding the chopped glass fibers and the carbon nanotubes into the nylon 6. In particular, the modified filler is added, so that the water absorption rate of the nylon composite material can be greatly reduced under the condition that the nylon composite material does not need to be added with an anti-hygroscopic auxiliary agent.
Description
Technical Field
The invention relates to the technical field of preparation of nylon materials, in particular to a low-water-absorption nylon composite material.
Background
Nylon 6 is a high molecular compound, also called PA6, polyamide 6 and nylon 6; the chemical and physical properties of the nylon are very similar to those of nylon 66, and the nylon is widely applied to the fields of electronics, automobile industry and the like. Such as are commonly used in the manufacture of housings for electronic and electrical equipment and automotive plastic parts.
Chopped glass fibers are also known as glass fiber chopped strands; the glass fiber is formed by melting quartz sand at high temperature, adopting a special sizing agent to draw raw wires, and carrying out wet online chopping or product glass fiber chopping; which are generally used to improve the mechanical properties of plastic articles. The carbon nano tube, also called as Baki tube, is a one-dimensional quantum material with a special structure; the anti-static plastic material can be applied to plastics, on one hand, the mechanical property of plastic products can be improved, and meanwhile, the electric conductivity of the plastic products can be increased, so that the anti-static plastic material has a certain anti-static function.
Because, in order to improve the mechanical properties and antistatic properties of nylon 6, it is generally possible to add chopped glass fibers and carbon nanotubes to nylon 6. However, the inventors found in the study that the addition of chopped glass fibers and carbon nanotubes to nylon 6 can improve the mechanical properties and antistatic properties thereof; but its water absorption is high and needs to be further improved.
Disclosure of Invention
In order to overcome at least one technical problem existing in the prior art, the invention provides a low-water-absorption nylon composite material.
The technical scheme of the invention is as follows:
the low-water-absorption nylon composite material comprises the following components in parts by weight:
100-150 parts of nylon resin; 10-30 parts of chopped glass fiber; 1-5 parts of carbon nano tube; 30-50 parts of modified filler; 1-3 parts of lubricant.
According to the invention, the prepared nylon composite material has excellent mechanical properties and antistatic properties by adding the chopped glass fibers and the carbon nanotubes into the nylon 6.
In particular, the modified filler is added, so that the nylon composite material has lower water absorption rate under the condition that no anti-hygroscopic auxiliary agent is added.
Can improve the mechanical property and antistatic property
Preferably, the low water absorption nylon composite material comprises the following components in parts by weight:
120-140 parts of nylon resin; 15-20 parts of chopped glass fibers; 3-5 parts of carbon nano tube; 40-50 parts of modified filler; 1-2 parts of dispersing agent; 2-3 parts of lubricant.
Most preferably, the low water absorption nylon composite material comprises the following components in parts by weight:
130 parts of nylon resin; 20 parts of chopped glass fibers; 3 parts of carbon nano tubes; 40 parts of modified filler; and 2 parts of lubricant.
Preferably, the modified filler is prepared by a process comprising the steps of:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent, reacting for 3-5 hours at 60-75 ℃, and drying a solid product to obtain a product 1;
(2) And mixing and stirring the product 1, methyl benzoate and paraffin for 1-3 h to obtain the modified filler.
Further preferably, in the step (1), the weight ratio of talcum powder, mica powder, silane coupling agent and absolute ethyl alcohol is 30-50: 50-70: 1 to 5: 500-1000.
Most preferably, the dosage ratio of talcum powder, mica powder, silane coupling agent and absolute ethyl alcohol in the step (1) is 40:60:3:600.
further preferably, the weight ratio of the product 1, the methyl benzoate and the paraffin in the step (2) is 100:1 to 3:3 to 6;
most preferably, the weight ratio of the product 1, the methyl benzoate and the paraffin wax in the step (2) is 100:2:5.
preferably, the silane coupling agent is silane coupling agent kh550.
The inventor has shown through a great deal of researches that the modified filler obtained by modifying talcum powder and mica powder by adopting a silane coupling agent, methyl benzoate and paraffin according to the method can greatly reduce the water absorption rate of the nylon composite material compared with the modified filler talcum powder and mica powder; so that the nylon composite material has lower water absorption.
Preferably, the nylon resin is nylon 6.
Preferably, the lubricant is calcium stearate.
The beneficial effects are that: the invention provides a low-water-absorption nylon composite material with a brand new composition, and the nylon composite material prepared by adding chopped glass fibers and carbon nanotubes into nylon 6 has excellent mechanical properties and antistatic properties. In particular, the modified filler obtained by modifying talcum powder and mica powder by the method disclosed by the invention is added with the silane coupling agent, the methyl benzoate and the paraffin wax, so that the water absorption rate of the nylon composite material can be greatly reduced under the condition that the nylon composite material does not need to be added with an anti-moisture absorption auxiliary agent.
Detailed Description
The present invention is further explained below with reference to specific examples, which are not intended to limit the present invention in any way.
Nylon 6 in the following examples was PA6 manufactured by basf, germany under the trade name B3W 10; the remaining raw materials, not designated as sources, are all available commercially by those skilled in the art via conventional routes.
Example 1 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 40 parts of modified filler; 2 parts of calcium stearate;
the modified filler is prepared by the following method:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 4 hours at 70 ℃, and drying a solid product to obtain a product 1; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 40:60:3:600;
(2) Mixing and stirring the product 1, methyl benzoate and paraffin for 2 hours to obtain the modified filler; wherein the weight ratio of the product 1 to the methyl benzoate to the paraffin is 100:2:5.
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, modified filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Example 2 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 100 parts of nylon 6; 30 parts of chopped glass fibers; 1 part of multi-wall carbon nano tube; 30 parts of modified filler; 1 part of calcium stearate;
the modified filler is prepared by the following method:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 5 hours at 60 ℃, and drying a solid product to obtain a product 1; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 30:70:5:800;
(2) Mixing and stirring the product 1, methyl benzoate and paraffin for 2 hours to obtain the modified filler; wherein the weight ratio of the product 1 to the methyl benzoate to the paraffin is 100:3:3.
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, modified filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Example 3 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 150 parts of nylon 6; 10 parts of chopped glass fibers; 5 parts of multi-wall carbon nano tubes; 50 parts of modified filler; 3 parts of calcium stearate;
the modified filler is prepared by the following method:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 3 hours at 75 ℃, and drying a solid product to obtain a product 1; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 50:50:1:500;
(2) Mixing and stirring the product 1, methyl benzoate and paraffin for 2 hours to obtain the modified filler; wherein the weight ratio of the product 1 to the methyl benzoate to the paraffin is 100:1:6.
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, modified filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Comparative example 1 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 2 parts of calcium stearate;
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Comparative example 1 differs from example 1 in that no modified filler was added in comparative example 1; in example 1, modified fillers obtained by modifying talc and mica powder according to the method of the present invention were added with a silane coupling agent, methyl benzoate and paraffin wax.
Comparative example 2 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 40 parts of filler; 2 parts of calcium stearate;
the filler is prepared from talcum powder and mica powder according to the weight ratio of 4:6, composition;
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Comparative example 2 differs from example 1 in that comparative example 2 was directly added with filler talc and mica powder; in example 1, modified fillers obtained by modifying talc and mica powder according to the method of the present invention were added with a silane coupling agent, methyl benzoate and paraffin wax.
Comparative example 3 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 40 parts of modified filler; 2 parts of calcium stearate;
the modified filler is prepared by the following method:
uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 4 hours at 70 ℃, and drying a solid product to obtain a modified filler; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 40:60:3:600.
comparative example 3 differs from example 1 in that the preparation method of the modified filler is different; comparative example 3 modified filler obtained by modifying talc powder and mica powder only with a silane coupling agent; whereas example 1 is a modified filler obtained by modifying talc and mica powder with a silane coupling agent, methyl benzoate and paraffin wax according to the method of the present invention.
Comparative example 4 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 40 parts of modified filler; 2 parts of calcium stearate;
the modified filler is prepared by the following method:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 4 hours at 70 ℃, and drying a solid product to obtain a product 1; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 40:60:3:600;
(2) Mixing and stirring the product 1 and methyl benzoate for 2 hours to obtain the modified filler; wherein the weight ratio of the product 1 to the methyl benzoate is 100:7.
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, modified filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Comparative example 4 differs from example 1 in that the preparation method of the modified filler is different; comparative example 4 modified filler obtained by modifying talc and mica powder only with a silane coupling agent and methyl benzoate according to the method of the present invention. In example 1, modified fillers were obtained by modifying talc and mica powder with a silane coupling agent and methyl benzoate and paraffin wax according to the method of the present invention.
Comparative example 5 preparation of Low Water absorption Nylon composite
The raw materials comprise the following components in parts by weight: 130 parts of nylon 6; 20 parts of chopped glass fibers; 3 parts of multi-wall carbon nano tubes; 40 parts of modified filler; 2 parts of calcium stearate;
the modified filler is prepared by the following method:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent kh550, reacting for 4 hours at 70 ℃, and drying a solid product to obtain a product 1; wherein, the dosage ratio of talcum powder, mica powder, silane coupling agent kh550 and absolute ethyl alcohol is 40:60:3:600;
(2) Mixing and stirring the product 1 and paraffin for 2 hours to obtain the modified filler; wherein the weight ratio of the product 1 to the paraffin is 100:7.
the preparation method comprises the following steps: nylon 6, chopped glass fibers, multi-wall carbon nanotubes, modified filler and calcium stearate are uniformly mixed in a high-speed mixer, then melt-blended by a double-screw extruder, and extruded to obtain the low-water-absorption nylon composite material.
Comparative example 5 differs from example 1 in that the preparation method of the modified filler is different; comparative example 5 modified filler obtained by modifying talc and mica powder only with a silane coupling agent and paraffin wax according to the method of the present invention. In example 1, modified fillers were obtained by modifying talc and mica powder with a silane coupling agent and methyl benzoate and paraffin wax according to the method of the present invention.
Referring to the method in ISO 62-2008, the low water absorption nylon composite materials prepared in examples 1 to 3 and comparative examples 1 to 5 were tested for water absorption at 23 ℃ with a relative humidity of 100% rh; the test results are shown in Table 1.
TABLE 1 Water absorption test results of Low Water absorption Nylon composite
| Water absorption rate | |
| Example 1 Low Water absorption Nylon composite | 0.2％ |
| Example 2 Low Water absorption Nylon composite | 0.4％ |
| Example 3 Low Water absorption Nylon composite | 0.5％ |
| Comparative example 1 Low Water absorption Nylon composite | 3.4％ |
| Comparative example 2 Low Water absorption Nylon composite | 2.9％ |
| Comparative example 3 Low Water absorption Nylon composite | 2.6％ |
| Comparative example 4 Low Water absorption Nylon composite | 2.1％ |
| Comparative example 5 Low Water absorption Nylon composite | 1.9％ |
As can be seen from the experimental data in Table 1, the low water absorption nylon composite materials prepared in examples 1 to 3 have water absorption below 0.5%, which is far lower than 3.4% of that in comparative example 1; this illustrates: according to the invention, the modified filler obtained by modifying talcum powder and mica powder by the silane coupling agent, methyl benzoate and paraffin according to the method disclosed by the invention is added, so that the water absorption rate of the nylon 6 composite material can be greatly reduced.
As can be seen from the experimental data in table 1, comparative example 2, to which unmodified talc and mica powder filler were added, did not have a significant decrease in water absorption compared to comparative example 1; this illustrates: the water absorption of the nylon 6 composite material cannot be greatly reduced by only adding talcum powder and mica powder fillers. Compared with the modified filler obtained by directly adding talcum powder and mica powder filler, the modified filler obtained by modifying talcum powder and mica powder by the method disclosed by the invention can greatly reduce the water absorption rate of the nylon 6 composite material.
As can be seen from the experimental data in table 1, the water absorption of example 1 is much smaller than that of comparative example 3; this illustrates: the modified filler obtained by modifying talcum powder and mica powder only by adopting a silane coupling agent can not greatly reduce the water absorption rate of the nylon 6 composite material; only the modified filler obtained by modifying talcum powder and mica powder by the method disclosed by the invention through adding a silane coupling agent, methyl benzoate and paraffin can greatly reduce the water absorption rate of the nylon 6 composite material.
As can be seen from the experimental data in table 1, the water absorption of example 1 is much smaller than that of comparative examples 4 and 5; this illustrates: the modified filler obtained by modifying talcum powder and mica powder only by adopting a silane coupling agent can not greatly reduce the water absorption rate of the nylon 6 composite material; it can be seen from this: the modified filler obtained by modifying talcum powder and mica powder by adopting the silane coupling agent, methyl benzoate and paraffin according to the method of the invention has a far lower reduction degree on the nylon 6 composite material than the modified filler obtained by modifying talcum powder and mica powder by adopting the silane coupling agent and methyl benzoate according to the method of the invention, or the modified filler obtained by modifying talcum powder and mica powder by adopting the silane coupling agent and paraffin according to the method of the invention. This illustrates: the modified raw materials of talcum powder and mica powder play a decisive role in whether the prepared modified filler can greatly reduce the water absorption rate of the nylon 6 composite material; only modified filler obtained by modifying talcum powder and mica powder by adopting a silane coupling agent, methyl benzoate and paraffin according to the method disclosed by the invention can greatly reduce the water absorption rate of the nylon 6 composite material; the water absorption rate of the prepared nylon 6 composite material is less than 0.5 percent.
Claims (9)
1. The low-water-absorption nylon composite material is characterized by comprising the following components in parts by weight:
100-150 parts of nylon resin; 10-30 parts of chopped glass fiber; 1-5 parts of carbon nano tube; 30-50 parts of modified filler; 1-3 parts of lubricant;
the modified filler is prepared by a method comprising the following steps:
(1) Uniformly mixing talcum powder and mica powder, adding the mixture into absolute ethyl alcohol, then adding a silane coupling agent, reacting for 3-5 hours at 60-75 ℃, and drying a solid product to obtain a product 1;
(2) And mixing and stirring the product 1, methyl benzoate and paraffin for 1-3 h to obtain the modified filler.
2. The low water absorption nylon composite of claim 1, comprising the following components in parts by weight:
120-140 parts of nylon resin; 15-20 parts of chopped glass fibers; 3-5 parts of carbon nano tube; 40-50 parts of modified filler; 1-2 parts of dispersing agent; 2-3 parts of lubricant.
3. The low water absorption nylon composite of claim 1, comprising the following components in parts by weight:
130 parts of nylon resin; 20 parts of chopped glass fibers; 3 parts of carbon nano tubes; 40 parts of modified filler; and 2 parts of lubricant.
4. The low water absorption nylon composite material according to claim 1, wherein in the step (1), the weight ratio of talcum powder, mica powder, silane coupling agent and absolute ethyl alcohol is 30-50: 50-70: 1 to 5: 500-1000.
5. The low water absorption nylon composite according to claim 1, wherein the dosage ratio of talcum powder, mica powder, silane coupling agent and absolute ethyl alcohol in the step (1) is 40:60:3:600.
6. the low water absorption nylon composite according to claim 1, wherein the weight ratio of the product 1, methyl benzoate and paraffin wax in the step (2) is 100:1 to 3:3 to 6.
7. The low water absorption nylon composite of claim 6, wherein the weight ratio of product 1, methyl benzoate, paraffin wax in step (2) is 100:2:5.
8. the low water absorption nylon composite of claim 1, wherein the nylon resin is nylon 6.
9. The low water absorption nylon composite of claim 1, wherein the lubricant is calcium stearate.
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| CN202111033668.2A CN113667297B (en) | 2021-09-03 | 2021-09-03 | Nylon composite material with low water absorption rate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03153767A (en) * | 1989-11-13 | 1991-07-01 | Shiseido Co Ltd | Hydrotalcite-coated powder |
| CN1935900A (en) * | 2006-10-20 | 2007-03-28 | 邓凯桓 | Special reinforced toughened nylon66 composite material for aluminium alloy profile insulating bar and its preparing method |
| CN101348609A (en) * | 2007-07-20 | 2009-01-21 | 比亚迪股份有限公司 | Composite nylon material and preparation thereof |
| CN109294154A (en) * | 2018-09-13 | 2019-02-01 | 温州职业技术学院 | A kind of waterproof footwear and processing technology |
| CN110093031A (en) * | 2019-06-04 | 2019-08-06 | 昆山顺威工程塑料有限公司 | A kind of plating nylon PA6 lamp housing material of high-intensity high heat-resistance dimensionally stable and preparation method thereof |
| CN113265722A (en) * | 2021-05-13 | 2021-08-17 | 浙江圣蓝新材科技有限公司 | Ultrahigh-strength melt-blown nylon reinforced base material and production process thereof |
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2021
- 2021-09-03 CN CN202111033668.2A patent/CN113667297B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03153767A (en) * | 1989-11-13 | 1991-07-01 | Shiseido Co Ltd | Hydrotalcite-coated powder |
| CN1935900A (en) * | 2006-10-20 | 2007-03-28 | 邓凯桓 | Special reinforced toughened nylon66 composite material for aluminium alloy profile insulating bar and its preparing method |
| CN101348609A (en) * | 2007-07-20 | 2009-01-21 | 比亚迪股份有限公司 | Composite nylon material and preparation thereof |
| CN109294154A (en) * | 2018-09-13 | 2019-02-01 | 温州职业技术学院 | A kind of waterproof footwear and processing technology |
| CN110093031A (en) * | 2019-06-04 | 2019-08-06 | 昆山顺威工程塑料有限公司 | A kind of plating nylon PA6 lamp housing material of high-intensity high heat-resistance dimensionally stable and preparation method thereof |
| CN113265722A (en) * | 2021-05-13 | 2021-08-17 | 浙江圣蓝新材科技有限公司 | Ultrahigh-strength melt-blown nylon reinforced base material and production process thereof |
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