A thermoplastic glass fiber cloth reinforced composite material and preparation method thereof

Abstract

The invention discloses a thermoplastic glass fiber cloth reinforced composite material and a preparation method thereof. The thermoplastic glass fiber cloth reinforced composite material consists of glass fiber cloth and a thermoplastic composite material. The mass percentage of the glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 45%-65%. The thermoplastic composite material is prepared from the following raw materials in parts by weight: 25-35 parts of polycarbonate, 10-20 parts of nylon 6, 1-3 parts of coupling agent, 0.2-1 part of silicon dioxide, 0.5-1 part of talcum powder, 0.2-0.8 part of aluminum hydroxide, 0.5-1 part of calcium stearate, 0.5-1 part of toughening agent and 0.5-1 part of antioxidant. The thermoplastic glass fiber cloth reinforced composite material is limited by the raw materials and the amount of each raw material, and the raw materials work together to make the overall performance of the prepared composite material have high strength, high modulus and high impact resistance, so as to better meet the market demand.

Description

Technical Field

[0001] The invention relates to the technical field of composite materials, and in particular to a thermoplastic glass fiber cloth reinforced composite material and a preparation method thereof. Background Art

[0002] Polycarbonate is a widely used engineering plastic with low density, good toughness and good dimensional stability. It is an amorphous, transparent thermoplastic polymer with excellent comprehensive properties. However, the strength and modulus of pure polycarbonate resin are relatively low, and it cannot meet the requirements in some fields that require high strength, such as electronic and power connectors of the front / back shells of mobile phones and tablets, electrical housings, capacitor housings, metal substitute parts, sports and leisure products, etc.

[0003] Glass fiber reinforced composites are widely used due to their outstanding mechanical properties and relatively low prices. Among them, thermoplastic glass fiber reinforced composites are environmentally friendly due to their recyclability, low density and other characteristics. According to the difference in the length of the reinforcing glass fiber, glass fiber composites can be divided into short fiber reinforced, long fiber reinforced and continuous fiber reinforced. With the increase in the retained length of the glass fiber, the mechanical properties of the composite can be greatly improved, especially the continuous glass fiber reinforced thermoplastic composite material, whose tensile strength is significantly improved. However, due to the lack of improvement in the resin properties, the performance of the prepared composite material does not meet the requirements.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The first purpose of the present invention is to provide a thermoplastic glass fiber cloth reinforced composite material. The thermoplastic glass fiber cloth reinforced composite material has excellent mechanical properties through the limitation of various raw materials and the amount used, and can better meet the market demand.

[0006] The second purpose of the present invention is to provide a method for preparing a thermoplastic glass fiber cloth reinforced composite material, which can fully promote the organic resin to penetrate the glass fiber cloth and fully combine with the glass fiber cloth, while achieving infiltration between the layers, thereby significantly improving the overall performance of the prepared thermoplastic glass fiber cloth reinforced composite material.

[0007] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0008] A first aspect of the present invention provides a thermoplastic glass fiber cloth reinforced composite material, wherein the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and a thermoplastic composite material;

[0009] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 45% to 65%;

[0010] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0011] 25-35 parts of polycarbonate, 10-20 parts of nylon 6, 1-3 parts of coupling agent, 0.2-1 part of silicon dioxide, 0.5-1 part of talc, 0.2-0.8 part of aluminum hydroxide, 0.5-1 part of calcium stearate, 0.5-1 part of toughening agent and 0.5-1 part of antioxidant.

[0012] Preferably, the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0013] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 50%;

[0014] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0015] 30 parts of polycarbonate, 15 parts of nylon 6, 2 parts of coupling agent, 0.5 parts of silicon dioxide, 0.8 parts of talc, 0.5 parts of aluminum hydroxide, 0.8 parts of calcium stearate, 0.8 parts of toughening agent and 0.8 parts of antioxidant.

[0016] Preferably, the gram weight of the glass fiber cloth is 25 to 210 g / m 2 .

[0017] Preferably, the coupling agent is a silane coupling agent; the silane coupling agent is KH-550 or KH-560.

[0018] Preferably, the toughening agent is s-2001 toughening agent.

[0019] Preferably, the antioxidant is triphenyl phosphite and / or diisooctylphenyl phosphite.

[0020] A second aspect of the present invention provides a method for preparing the above-mentioned thermoplastic glass fiber cloth reinforced composite material, the preparation method comprising the following steps:

[0021] (a) mixing and heating polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant to obtain a fluidized thermoplastic composite material;

[0022] (b) preheating the glass fiber cloth, then dipping it in a fluidized thermoplastic composite material, and then applying it by scraping and rolling to obtain a glass fiber sheet;

[0023] (c) The glass fiber sheets are alternately laid longitudinally and transversely, and then melt-molded to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0024] Preferably, in step (a), the heating temperature is 240-260°C.

[0025] Preferably, in step (b), the preheating temperature is 200-220°C.

[0026] Preferably, the thermoplastic glass fiber cloth reinforced composite material comprises at least two glass fiber sheets.

[0027] Preferably, in step (b), the mass percentage of glass fiber cloth in the glass fiber sheet is 45% to 65%.

[0028] Preferably, in step (c), the temperature of melt molding is 200-250° C., the pressure is 1-2 MPa, and the time is 3-10 min.

[0029] Compared with the prior art, the beneficial effects of the present invention include at least:

[0030] The thermoplastic glass fiber cloth reinforced composite material of the present invention can improve the overall performance of the prepared composite material by limiting the raw materials and the usage amount. The mechanical properties of the material can be improved by adding silicon dioxide, talcum powder and aluminum hydroxide, the plasticizing properties of the material can be improved by calcium stearate, and nylon 6 can improve the viscosity and mechanical properties of the material. Through the joint action of the raw materials, the overall performance of the prepared composite material has high strength, high modulus and high impact resistance, so that the market demand can be better met.

[0031] The preparation method of the thermoplastic glass fiber cloth reinforced composite material of the present invention can fully promote the organic resin to penetrate the glass fiber cloth and fully combine with the glass fiber cloth, and at the same time achieve infiltration between the layers, thereby significantly improving the overall performance of the prepared thermoplastic glass fiber cloth reinforced composite material. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0034] Example 1

[0035] This embodiment is a thermoplastic glass fiber cloth reinforced composite material, and the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0036] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 45%;

[0037] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0038] 25 parts of polycarbonate, 10 parts of nylon 6, 1 part of coupling agent, 1 part of silicon dioxide, 0.5 parts of talc, 0.2 parts of aluminum hydroxide, 1 part of calcium stearate, 0.5 parts of toughening agent and 0.5 parts of antioxidant; wherein,

[0039] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0040] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0041] The toughening agent is s-2001 toughening agent.

[0042] The antioxidant is triphenyl phosphite.

[0043] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0044] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating them to 240° C. to obtain a fluidized thermoplastic composite material;

[0045] (b) preheating the glass fiber cloth to 200° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 45%;

[0046] (c) Three layers of glass fiber sheets are alternately laid longitudinally and transversely, and then melt-molded at a temperature of 200° C., a pressure of 2 MPa, and a time of 50 min to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0047] Example 2

[0048] This embodiment is a thermoplastic glass fiber cloth reinforced composite material, and the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0049] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 65%;

[0050] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0051] 35 parts of polycarbonate, 20 parts of nylon 6, 3 parts of coupling agent, 0.2 parts of silicon dioxide, 1 part of talc, 0.8 parts of aluminum hydroxide, 0.5 parts of calcium stearate, 1 part of toughening agent and 1 part of antioxidant; wherein,

[0052] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0053] The coupling agent is a silane coupling agent; the silane coupling agent is KH-560;

[0054] The toughening agent is s-2001 toughening agent.

[0055] The antioxidant is diisooctyl phenyl phosphite.

[0056] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0057] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating them to 260° C. to obtain a fluidized thermoplastic composite material;

[0058] (b) preheating the glass fiber cloth to 220° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 65%;

[0059] (c) Three layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 250° C., a pressure of MPa, and a time of 3 min to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0060] Example 3

[0061] This embodiment is a thermoplastic glass fiber cloth reinforced composite material, and the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0062] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 60%;

[0063] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0064] 32 parts of polycarbonate, 12 parts of nylon 6, 1 part of coupling agent, 1 part of silicon dioxide, 0.5 parts of talc, 0.8 parts of aluminum hydroxide, 0.6 parts of calcium stearate, 0.6 parts of toughening agent and 0.8 parts of antioxidant; wherein,

[0065] The gram weight of the glass fiber cloth is 160g / m2 ;

[0066] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0067] The toughening agent is s-2001 toughening agent.

[0068] The antioxidant is triphenyl phosphite.

[0069] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0070] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating the mixture to 250° C. to obtain a fluidized thermoplastic composite material;

[0071] (b) preheating the glass fiber cloth to 210° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 60%;

[0072] (c) Five layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 230° C., a pressure of 2 MPa, and a time of 6 min to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0073] Example 4

[0074] This embodiment is a thermoplastic glass fiber cloth reinforced composite material, and the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0075] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 55%;

[0076] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0077] 30 parts of polycarbonate, 18 parts of nylon 6, 3 parts of coupling agent, 1 part of silicon dioxide, 0.5 parts of talc, 0.4 parts of aluminum hydroxide, 0.7 parts of calcium stearate, 0.7 parts of toughening agent and 0.7 parts of antioxidant; wherein,

[0078] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0079] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0080] The toughening agent is s-2001 toughening agent.

[0081] The antioxidant is equal amounts of triphenyl phosphite and diisooctylphenyl phosphite.

[0082] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0083] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating them to 240° C. to obtain a fluidized thermoplastic composite material;

[0084] (b) preheating the glass fiber cloth to 200° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 55%;

[0085] (c) Five layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 220° C., a pressure of 1 MPa, and a time of 10 min to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0086] Example 5

[0087] This embodiment is a thermoplastic glass fiber cloth reinforced composite material, and the thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material;

[0088] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 50%;

[0089] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0090] 30 parts of polycarbonate, 15 parts of nylon 6, 2 parts of coupling agent, 0.5 parts of silicon dioxide, 0.8 parts of talc, 0.5 parts of aluminum hydroxide, 0.8 parts of calcium stearate, 0.8 parts of toughening agent and 0.8 parts of antioxidant; wherein,

[0091] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0092] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0093] The toughening agent is s-2001 toughening agent.

[0094] The antioxidant is triphenyl phosphite.

[0095] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0096] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating the mixture to 250° C. to obtain a fluidized thermoplastic composite material;

[0097] (b) preheating the glass fiber cloth to 210° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 50%;

[0098] (c) Five layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 220° C., a pressure of 2 MPa, and a time of 6 minutes to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0099] Comparative Example 1

[0100] This comparative example is a thermoplastic glass fiber cloth reinforced composite material, which is composed of glass fiber cloth and thermoplastic composite material;

[0101] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 50%;

[0102] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0103] 45 parts of polycarbonate, 2 parts of coupling agent, 0.5 parts of silicon dioxide, 0.8 parts of talc, 0.5 parts of aluminum hydroxide, 0.8 parts of calcium stearate, 0.8 parts of toughening agent and 0.8 parts of antioxidant; wherein,

[0104] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0105] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0106] The toughening agent is s-2001 toughening agent.

[0107] The antioxidant is triphenyl phosphite.

[0108] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0109] (a) mixing polycarbonate, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating the mixture to 250° C. to obtain a fluidized thermoplastic composite material;

[0110] (b) preheating the glass fiber cloth to 210° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 50%;

[0111] (c) Five layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 220° C., a pressure of 2 MPa, and a time of 6 minutes to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0112] Comparative Example 2

[0113] This comparative example is a thermoplastic glass fiber cloth reinforced composite material, which is composed of glass fiber cloth and thermoplastic composite material;

[0114] The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 50%;

[0115] The thermoplastic composite material is prepared from the following raw materials in parts by weight:

[0116] 30 parts of polycarbonate, 15 parts of nylon 6, 2 parts of coupling agent, 0.5 parts of silicon dioxide, 0.8 parts of talc, 0.5 parts of aluminum hydroxide, 0.8 parts of calcium stearate, 0.8 parts of toughening agent and 0.8 parts of antioxidant; wherein,

[0117] The gram weight of the glass fiber cloth is 160g / m 2 ;

[0118] The coupling agent is a silane coupling agent; the silane coupling agent is KH-550;

[0119] The toughening agent is MBS toughening agent.

[0120] The antioxidant is triphenyl phosphite.

[0121] The preparation method of the thermoplastic glass fiber cloth reinforced composite material comprises the following steps:

[0122] (a) mixing polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant and heating the mixture to 250° C. to obtain a fluidized thermoplastic composite material;

[0123] (b) preheating the glass fiber cloth to 210° C., then dipping it in a fluidized thermoplastic composite material, and then coating and rolling it to obtain a glass fiber sheet, wherein the mass percentage of the glass fiber cloth in the glass fiber sheet is 50%;

[0124] (c) Five layers of glass fiber sheets are laid alternately longitudinally and transversely, and then melt-molded at a temperature of 220° C., a pressure of 2 MPa, and a time of 6 minutes to obtain the thermoplastic glass fiber cloth reinforced composite material.

[0125] Experimental example

[0126] The thermoplastic glass fiber cloth reinforced composite materials prepared in Example 5 and Comparative Examples 1-2 were obtained respectively, and then the properties of the composite materials were tested. The test results are shown in Table 1:

[0127] Table 1

[0128]

[0129] From Table 1, we can see that:

[0130] Compared with Comparative Example 1, the thermoplastic glass fiber cloth reinforced composite material of the present invention has more excellent mechanical properties. Compared with Comparative Example 2, the present application can better improve the impact resistance of the prepared composite material by selecting a specific toughening agent.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A thermoplastic glass fiber cloth reinforced composite material, It is characterized in that The thermoplastic glass fiber cloth reinforced composite material is composed of glass fiber cloth and thermoplastic composite material; The mass percentage of glass fiber cloth in the thermoplastic glass fiber cloth reinforced composite material is 45% to 65%; The thermoplastic composite material is prepared from the following raw materials in parts by weight: 25-35 parts of polycarbonate, 10-20 parts of nylon 6, 1-3 parts of coupling agent, 0.2-1 parts of silicon dioxide, 0.5-1 parts of talc, 0.2-0.8 parts of aluminum hydroxide, 0.5-1 parts of calcium stearate, 0.5-1 parts of toughening agent and 0.5-1 parts of antioxidant; The toughening agent is s-2001 toughening agent.

2. The thermoplastic glass fiber cloth reinforced composite material according to claim 1, It is characterized in that The gram weight of the glass fiber cloth is 25-210 g / m 2 .

3. The thermoplastic glass fiber cloth reinforced composite material according to claim 1, It is characterized in that The coupling agent is a silane coupling agent; the silane coupling agent is KH-550 or KH-560.

4. The thermoplastic glass fiber cloth reinforced composite material according to claim 1, It is characterized in that The antioxidant is triphenyl phosphite and / or diisooctylphenyl phosphite.

5. A method for preparing a thermoplastic glass fiber cloth reinforced composite material according to any one of claims 1 to 4, It is characterized in that The steps include: (a) mixing and heating polycarbonate, nylon 6, a coupling agent, silicon dioxide, talc, aluminum hydroxide, calcium stearate, a toughening agent and an antioxidant to obtain a fluidized thermoplastic composite material; (b) preheating the glass fiber cloth, then dipping it in a fluidized thermoplastic composite material, and then applying it by scraping and rolling to obtain a glass fiber sheet; (c) The glass fiber sheets are alternately laid longitudinally and transversely, and then melt-molded to obtain the thermoplastic glass fiber cloth reinforced composite material.

6. The preparation method according to claim 5, It is characterized in that In the step (a), the heating temperature is 240-260°C.

7. The preparation method according to claim 5, It is characterized in that In the step (b), the preheating temperature is 200-220°C.

8. The preparation method according to claim 5, It is characterized in that In the step (b), the mass percentage of the glass fiber cloth in the glass fiber sheet is 45% to 65%.

9. The preparation method according to claim 5, It is characterized in that In the step (c), the temperature of melt molding is 200-250° C., the pressure is 1-2 MPa, and the time is 3-10 min.

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