CN113861555A - Continuous fiber reinforced thermoplastic prepreg tape and preparation method thereof - Google Patents
Continuous fiber reinforced thermoplastic prepreg tape and preparation method thereof Download PDFInfo
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- CN113861555A CN113861555A CN202111054019.0A CN202111054019A CN113861555A CN 113861555 A CN113861555 A CN 113861555A CN 202111054019 A CN202111054019 A CN 202111054019A CN 113861555 A CN113861555 A CN 113861555A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
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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
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
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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
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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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
Abstract
The application discloses a continuous fiber reinforced thermoplastic prepreg tape and a preparation method thereof, wherein the continuous fiber reinforced thermoplastic prepreg tape comprises the following raw materials in parts by weight: 30-70 parts of continuous glass fiber, 30-70 parts of high-melt-index polypropylene, 0.1-5 parts of compatilizer, 0.1-5 parts of antioxidant, 0.1-10 parts of lubricant and 0-5 parts of flowable additive by weight; the prepreg tape prepared by the preparation method is ultrathin in thickness and good in mechanical property.
Description
Technical Field
The application relates to the field of composite materials, in particular to a continuous fiber reinforced thermoplastic prepreg tape and a preparation method thereof.
Technical Field
The continuous fiber reinforced thermoplastic prepreg tape is a unidirectional tape and has strong tensile strength along the glass fiber direction, and the non-fiber support in the vertical direction basically only depends on the combination of resin intermolecular force, so that products prepared by using the continuous fiber reinforced thermoplastic unidirectional tape as a raw material, such as plates, pipelines and the like, need to be subjected to a layering design at a certain angle.
Aiming at the target plate, the more the number of the layers of the prepreg tapes is, the more uniform the prepared plate is, and the less obvious the anisotropy is, so that the product prepared by the prepreg tape has higher tensile and flexural modulus and strength than the product prepared by the common continuous fiber reinforced thermoplastic sheet material, thereby further expanding the application field of the continuous fiber reinforced thermoplastic material. However, the thickness of the sheet material is increased by the number of layers of the prepreg tape, and an ultrathin thermoplastic unidirectional prepreg tape is required in order to simultaneously achieve the uniformity, high mechanical properties and the specified thickness of the sheet material.
Chinese patent ZL200610045857.0 discloses a method for introducing glass fibers from a fiber inlet of a cross slit extruder die head with two feed inlets, enabling molten resin to uniformly flow into the die head from a resin feed inlet, further forcibly dispersing the glass fibers in the resin in the die head, finally extruding the glass fibers coated by the molten resin from a die head outlet, and finally obtaining a continuous fiber reinforced thermoplastic sheet material through cooling and shaping. The invention is easy to generate surface hairiness damage of the glass fiber due to the forced dispersion structure in the die head, thereby causing the exposure of the glass fiber and the performance reduction, and being incapable of preparing ultrathin strips.
Chinese patent ZL200810201216.9 discloses a method for preparing a continuous fiber reinforced thermoplastic sheet material, wherein an extrusion die head directly extrudes an extrusion material onto continuous fibers, and then the extrusion material is subjected to hot roller pressing compounding and then is cooled and shaped to form a final product. In this method, the molten resin is extruded and then adhered to the surface of the glass fiber, and the molten thermoplastic resin has a certain fluidity, but the glass fiber is hardly impregnated with the resin due to its high viscosity, and therefore a unidirectional prepreg tape as thin as 0.1mm cannot be obtained.
Disclosure of Invention
The application provides a continuous fiber reinforced thermoplastic prepreg tape and a preparation method thereof, wherein the prepreg tape is ultrathin in thickness and good in mechanical property; the prepreg tape utilizes a post-dispersing device and a high-fluidity resin formula in a preparation device to improve the wettability of resin and glass fibers, so that the resin is uniformly dispersed in the highly oriented glass fibers, and the dispersed glass fibers are guaranteed to be well wrapped and impregnated by the resin with good fluidity in a highly oriented state, thereby having the effects of ultra-thinness and good mechanical property.
The application is realized by the following specific scheme:
in one aspect, the present application provides a continuous fiber reinforced thermoplastic prepreg tape, comprising the following raw materials in parts by weight: 30-70 parts of continuous glass fiber, 30-70 parts of high-melt-index polypropylene, 0.1-5 parts of compatilizer, 0.1-5 parts of antioxidant, 0.1-10 parts of lubricant and 0-5 parts of fluidity additive.
The formula of the continuous fiber reinforced thermoplastic prepreg tape is scientific and reasonable, and the prepared prepreg tape is ultrathin in thickness, low in resin content and high in glass fiber content. The high-melting-index polypropylene ester has good fluidity, and can ensure that dispersed glass fibers are completely wrapped and impregnated, so that the resin is uniformly dispersed in the highly oriented glass fibers.
Preferably, the prepreg tape comprises the following raw materials in parts by weight: 40-60 parts of continuous glass fiber, 40-60 parts of high-melt-index polypropylene, 0.5-3 parts of compatilizer, 0.5-3 parts of antioxidant, 1-8 parts of lubricant and 0.5-4 parts of fluidity additive.
Preferably, the prepreg tape comprises the following raw materials in parts by weight: 45-55 parts of continuous glass fiber, 45-55 parts of high-melt-index polypropylene, 1-2 parts of compatilizer, 1-2 parts of antioxidant, 3-5 parts of lubricant and 1-3 parts of fluidity additive.
Preferably, the continuous glass fiber is alkali glass twisted roving glass fiber.
Preferably, the linear density of the alkali glass stranded roving glass fiber is 100 to 10000 tex; the diameter of the alkali glass plied twistless roving glass fiber is 5-50 mu m.
Preferably, the high-melting-index polypropylene is one or more of homo-polypropylene, block co-polypropylene and random co-polypropylene.
Preferably, the high-melt index polypropylene has a melt index value of 60 to 200.
Preferably, the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol tristearate and wax.
Preferably, the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
In another aspect, the present application provides a method for preparing a continuous glass fiber reinforced polypropylene prepreg tape, comprising the steps of:
leading out continuous glass fiber from a constant tension creel, leading the continuous glass fiber to enter a preheating device through a front guiding device for preheating, leading the continuous glass fiber to enter an extrusion die through a rear dispersing device, dipping the continuous glass fiber in a mixed solution of high-melt-index polypropylene, a compatilizer, an antioxidant, a lubricant and a fluidity additive in the extrusion die, sending the dipped continuous glass fiber to a cooling shaping roller system to form a continuous glass fiber reinforced polypropylene prepreg tape with smooth appearance, and finally rolling the continuous glass fiber reinforced polypropylene prepreg tape through a rolling system.
The beneficial effect of this application:
the application provides a continuous fiber reinforced thermoplastic prepreg tape and a preparation method thereof. Compared with the traditional prepreg tape, the prepreg tape has the advantages that the content of glass fibers is high, the resin content is low, the high-fluidity formula is formed by high-melt-index polypropylene resin and peroxide compound type fluidity additives, meanwhile, the rear dispersing device in the preparation device is utilized to improve the wettability of resin and the glass fibers, so that the resin is uniformly dispersed in the highly oriented glass fibers, the dispersed glass fibers are guaranteed to be wrapped and impregnated by the resin with good fluidity in a highly oriented state, and the ultrathin prepreg tape with good mechanical property is obtained.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The beneficial effects of selecting the above ranges of component content in the formulation of the continuous fiber reinforced thermoplastic prepreg tape of the present application will be illustrated by the specific experimental data given by the examples.
The following are examples of preferred ranges for the components included in the continuous glass fiber reinforced thermoplastic prepreg tape according to the present application.
Preferred example 1
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass plied roving glass fiber; the high-melt-index polypropylene is one or more of homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol trihydroxystearate and wax; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.1 mm.
Preferred example two
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 100-10000 tex, and the diameter of the alkali glass twisted roving glass fiber is 5-50 mu m; the high-melt-index polypropylene is one or more of homopolymerized polypropylene, block copolymerized polypropylene and random copolymerized polypropylene, and the melt index value of the high-melt-index polypropylene is 60-200; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol trihydroxystearate and wax; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.1 mm.
Preferred example three
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass plied roving glass fiber; the high-melt-index polypropylene is one or more of homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol trihydroxystearate and wax; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.08 mm
Preferred example four
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 1000-5000 tex, and the diameter of the alkali glass twisted roving glass fiber is 10-30 mu m; the high-melt-index polypropylene is one or more of homopolymerized polypropylene, block copolymerized polypropylene and random copolymerized polypropylene, and the melt index value of the high-melt-index polypropylene is 100-150; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol trihydroxystearate and wax; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.08 mm.
Preferred example five
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass plied roving glass fiber; the high-melt-index polypropylene is one or more of homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol, butyl stearate, glycerol trihydroxystearate and wax; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.05 mm.
Preferred example six
The continuous fiber reinforced thermoplastic prepreg tape according to the present application contains the following components in the amounts expressed in parts by weight:
the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 1000-5000 tex, and the diameter of the alkali glass twisted roving glass fiber is 10-30 mu m; the high-melt-index polypropylene is one or more of homopolymerized polypropylene, block copolymerization polypropylene and random copolymerization polypropylene, and the melt index value of the high-melt-index polypropylene is 100-150; the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic ester of saturated fatty alcohol and butyl stearate; the fluidity additive is one or more of acyl peroxide, hydroperoxide, dialkyl peroxide and ester peroxide.
The thickness of the prepared prepreg tape is 0.01-0.05 mm.
The preparation method of the prepreg tape of preferable examples one to six is:
leading out continuous glass fiber from a constant tension creel, leading the continuous glass fiber to enter a preheating device through a front guiding device for preheating, leading the continuous glass fiber to enter an extrusion die through a rear dispersing device, dipping the continuous glass fiber in a mixed solution of high-melt-index polypropylene, a compatilizer, an antioxidant, a lubricant and a fluidity additive in the extrusion die, sending the dipped continuous glass fiber to a cooling shaping roller system to form a continuous glass fiber reinforced polypropylene prepreg tape with smooth appearance, and finally rolling the continuous glass fiber reinforced polypropylene prepreg tape through a rolling system.
The continuous glass fiber reinforced thermoplastic prepreg tape of the present application is further explained below according to specific examples.
Example 1
A continuous fiber reinforced thermoplastic prepreg tape contains the following components in the following amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 1000tex, and the diameter of the alkali glass twisted roving glass fiber is 10 mu m; the high-melt index polypropylene is homopolymerized polypropylene, and the melt index value of the high-melt index polypropylene is 100; the lubricant is N, N-hexamethylene distearamide; the fluidity additive is acyl peroxide.
The thickness of the prepreg tape prepared was 0.06 mm.
Example 2
A continuous fiber reinforced thermoplastic prepreg tape contains the following components in the following amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 5000tex, and the diameter of the alkali glass twisted roving glass fiber is 130 mu m; the high-melt index polypropylene is block copolymerization polypropylene, and the melt index value of the high-melt index polypropylene is 150; the lubricant is oleamide and erucamide; the flow additive is hydroperoxide.
The thickness of the prepreg tape prepared was 0.05 mm.
Example 3
A continuous fiber reinforced thermoplastic prepreg tape contains the following components in the following amounts expressed in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 2000tex, and the diameter of the alkali glass twisted roving glass fiber is 20 mu m; the high-melt index polypropylene is random copolymerized polypropylene, and the melt index value of the high-melt index polypropylene is 150; the lubricant is dibasic ester of saturated fatty alcohol; the fluidity additive is ester peroxide.
The thickness of the prepreg tape prepared was 0.08 mm.
Example 4
The continuous fiber reinforced thermoplastic prepreg tape contains the following components in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 4000tex, and the diameter of the alkali glass twisted roving glass fiber is 30 mu m; the high-melt index polypropylene is homo-polypropylene and block copolymerization polypropylene, and the melt index value of the high-melt index polypropylene is 120; the lubricant is dibasic ester of saturated fatty alcohol; the fluidity additive is acyl peroxide.
The thickness of the prepreg tape prepared was 0.02 mm.
Example 5
The continuous fiber reinforced thermoplastic prepreg tape contains the following components in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 3000tex, and the diameter of the alkali glass twisted roving glass fiber is 20 mu m; the high-melt index polypropylene is homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene, and the melt index value of the high-melt index polypropylene is 130; the lubricant is oleamide; the fluidity additive is acyl peroxide.
The thickness of the prepreg tape prepared was 0.01 mm.
Example 6
The continuous fiber reinforced thermoplastic prepreg tape contains the following components in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 200tex, and the diameter of the alkali glass twisted roving glass fiber is 18 mu m; the high-melt index polypropylene is homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene, and the melt index value of the high-melt index polypropylene is 100; the lubricant is N, N-hexamethylene distearamide, oleamide and erucamide; the fluidity additive is dialkyl peroxide.
The thickness of the prepreg tape prepared was 0.03 mm.
Example 7
The continuous fiber reinforced thermoplastic prepreg tape contains the following components in parts by weight:
wherein the continuous glass fiber is alkali glass twisted roving glass fiber, the linear density of the alkali glass twisted roving glass fiber is 3000tex, and the diameter of the alkali glass twisted roving glass fiber is 20 mu m; the high-melt index polypropylene is homo-polypropylene, block copolymerization polypropylene and random copolymerization polypropylene, and the melt index value of the high-melt index polypropylene is 130; the lubricant is dibasic ester of N, N-hexamethylene distearamide and saturated fatty alcohol; the fluidity additive is acyl peroxide and hydroperoxide.
The thickness of the prepreg tape prepared was 0.01 mm.
The preparation method of the prepreg tape of the embodiment 1 to 7 comprises the following steps:
leading out continuous glass fiber from a constant tension creel, leading the continuous glass fiber to enter a preheating device through a front guiding device for preheating, leading the continuous glass fiber to enter an extrusion die through a rear dispersing device, dipping the continuous glass fiber in a mixed solution of high-melt-index polypropylene, a compatilizer, an antioxidant, a lubricant and a fluidity additive in the extrusion die, sending the dipped continuous glass fiber to a cooling shaping roller system to form a continuous glass fiber reinforced polypropylene prepreg tape with smooth appearance, and finally rolling the continuous glass fiber reinforced polypropylene prepreg tape through a rolling system.
As can be seen from the test results of the first to sixth preferred examples and the examples 1 to 7, the thickness of the continuous fiber reinforced thermoplastic prepreg tape prepared by the method is ultrathin and is not more than 0.01 mm.
The formula of the continuous fiber reinforced thermoplastic prepreg tape is scientific and reasonable, and a high-fluidity formula is formed by high-melt-index polypropylene resin and peroxide compound fluidity additives; the preparation method of the continuous fiber reinforced thermoplastic prepreg tape utilizes the post-dispersing device in the preparation device to improve the wettability of resin and glass fibers, so that the resin is uniformly dispersed in the highly oriented glass fibers, and the dispersed glass fibers are ensured to be well wrapped and impregnated by the resin with good fluidity in a highly oriented state. Thereby obtaining the ultrathin prepreg tape with good mechanical property.
It should be noted that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. The continuous fiber reinforced thermoplastic prepreg tape is characterized by comprising the following raw materials in parts by weight: 30-70 parts of continuous glass fiber, 30-70 parts of high-melt-index polypropylene, 0.1-5 parts of compatilizer, 0.1-5 parts of antioxidant, 0.1-10 parts of lubricant and 0-5 parts of fluidity additive.
2. The prepreg tape according to claim 1, which comprises the following raw materials in parts by weight: 40-60 parts of continuous glass fiber, 40-60 parts of high-melt-index polypropylene, 0.5-3 parts of compatilizer, 0.5-3 parts of antioxidant, 1-8 parts of lubricant and 0.5-4 parts of fluidity additive.
3. The prepreg tape of claim 1, wherein the continuous glass fibers are alkali glass plied roving glass fibers.
4. The prepreg tape of claim 3, wherein the alkali glass plied roving glass fibers have a linear density of 100 to 10000 tex; the diameter of the alkali glass plied twistless roving glass fiber is 5-50 mu m.
5. The prepreg tape according to claim 1, wherein the high melt index polypropylene is one or more of homo-polypropylene, block co-polypropylene and random co-polypropylene.
6. The prepreg according to claim 1, wherein the high melt index polypropylene has a melt index value of 60 to 200.
7. The prepreg according to claim 1, wherein the lubricant is one or more of N, N-hexamethylene distearamide, oleamide, erucamide, dibasic esters of saturated fatty alcohols, butyl stearate, glyceryl tristearate, and waxes.
8. The prepreg tape of claim 1, wherein the flow additive is one or more of acyl peroxides, hydroperoxides, dialkyl peroxides, and ester peroxides.
9. A preparation method of a continuous glass fiber reinforced polypropylene prepreg tape is characterized by comprising the following steps:
leading out continuous glass fiber from a constant tension creel, leading the continuous glass fiber to enter a preheating device through a front guiding device for preheating, leading the continuous glass fiber to enter an extrusion die through a rear dispersing device, dipping the continuous glass fiber in a mixed solution of high-melt-index polypropylene, a compatilizer, an antioxidant, a lubricant and a fluidity additive in the extrusion die, sending the dipped continuous glass fiber to a cooling shaping roller system to form a continuous glass fiber reinforced polypropylene prepreg tape with smooth appearance, and finally rolling the continuous glass fiber reinforced polypropylene prepreg tape through a rolling system.
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| CN202111054019.0A CN113861555A (en) | 2021-09-09 | 2021-09-09 | Continuous fiber reinforced thermoplastic prepreg tape and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111849064A (en) * | 2019-04-25 | 2020-10-30 | 振石集团华美新材料有限公司 | Continuous glass fiber reinforced polypropylene prepreg tape and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111849064A (en) * | 2019-04-25 | 2020-10-30 | 振石集团华美新材料有限公司 | Continuous glass fiber reinforced polypropylene prepreg tape and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 于华等编著: "《热固性树脂基复合材料预浸料使用手册(第1版》", 中国建材工业出版社, pages: 251 - 29 * |
| 方立等: "连续纤维增强热塑性复合材料的浸渍及其缠绕成型", 《纤维复合材料》, 30 September 2008 (2008-09-30), pages 27 - 31 * |
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