CN116284890A - Preparation method of corrosion-resistant FRPP plastic and application of FRPP plastic in pipe valve - Google Patents
Preparation method of corrosion-resistant FRPP plastic and application of FRPP plastic in pipe valve Download PDFInfo
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- CN116284890A CN116284890A CN202211725210.8A CN202211725210A CN116284890A CN 116284890 A CN116284890 A CN 116284890A CN 202211725210 A CN202211725210 A CN 202211725210A CN 116284890 A CN116284890 A CN 116284890A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title claims abstract description 27
- 239000004033 plastic Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- -1 polypropylene Polymers 0.000 claims abstract description 40
- 239000004743 Polypropylene Substances 0.000 claims abstract description 35
- 239000003365 glass fiber Substances 0.000 claims abstract description 35
- 229920001155 polypropylene Polymers 0.000 claims abstract description 33
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000001746 injection moulding Methods 0.000 claims abstract description 31
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000002199 base oil Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 230000008595 infiltration Effects 0.000 claims abstract description 8
- 238000001764 infiltration Methods 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 15
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic 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
- 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
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- 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
-
- 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
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method of corrosion-resistant FRPP plastic and application thereof in pipe valve parts, comprising the following steps: s1: preparing maleic anhydride grafted polypropylene; s2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and an antioxidant in a high-speed mixer according to a certain proportion; s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate the glass fibers; s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating; s5: and (5) injection molding. In the preparation process of the maleic anhydride grafted polypropylene, base oil and styrene are used for blending, so that the compatibility between the polypropylene and glass fiber is further enhanced; the compatibility of the glass fiber and the polypropylene is improved, so that the finally prepared glass fiber reinforced polypropylene has more excellent corrosion resistance.
Description
Technical Field
The invention relates to a preparation method of corrosion-resistant FRPP plastic and application thereof in pipe valve parts.
Background
The valve member is indispensable in the field of chemical production, and chemical production often involves the selection of pipes of acid and alkali corrosive media. Polypropylene is a thermoplastic synthetic resin with excellent performances, such as chemical resistance, heat resistance, electrical insulation and the like, and is widely applied to the fields of machinery, automobiles, electronic appliances and the like. But the polarity of PP is poor, and the compatibility with other polar polymer resins, fillers and the like is poor, so that the application range of the PP material is limited.
The FRPP pipe is a glass fiber modified polypropylene pipeline treated by a coupling agent, generally has the characteristics of corrosion resistance, high temperature resistance, sanitation, no toxicity, recycling and the like, has relatively good impact resistance and tensile strength, and is light in weight. However, for some highly corrosive media, FRPP pipes still have a risk of being corroded easily, and thus there is a need to improve the corrosion resistance of FRPP pipes.
Disclosure of Invention
In order to improve the corrosion resistance of the FRPP pipe, the invention provides a preparation method of corrosion-resistant FRPP plastic and application thereof in pipe valve parts, and the specific scheme is as follows:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: preparing maleic anhydride grafted polypropylene;
s2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and an antioxidant in a high-speed mixer according to a certain proportion;
s3: adding the materials into a double-screw extruder, and feeding the melted and plasticized mixed melt into a infiltration die to infiltrate glass fibers, wherein the addition amount of the glass fibers is 15-22%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine.
Further, the specific steps for preparing the maleic anhydride grafted polypropylene in S1 comprise:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion;
s04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
Further, the temperature of the twin-screw extruder is controlled to be 180-200 ℃ and the rotating speed is 100-150 r/min.
Further, the injection molding process parameters are as follows: the injection molding temperature is 200-225 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
Further, the diameter of the glass fiber in S2 is 15 to 20 μm.
Further, the antioxidant is a mixture of Irganox1010 and Irgafos 168.
Further, the mass ratio of Irganox1010 to Irgafos168 is 1: (1-2.5).
The application of the FRPP plastic prepared by the preparation method of the corrosion-resistant FRPP plastic in a pipe valve member.
The beneficial effects are that:
(1) The invention provides a preparation method of corrosion-resistant FRPP plastic, which comprises the steps of adding a composite antioxidant, specifically a mixture of antioxidant 1010 and antioxidant 168, into raw materials, optimizing the mass proportion of each antioxidant in the composite antioxidant, and further improving the stability and the thermo-oxidative stability of glass fiber reinforced polypropylene during processing.
(2) In order to improve the grafting rate of the maleic anhydride grafted polypropylene, the base oil and the styrene are used for blending in the preparation process of the maleic anhydride grafted polypropylene, and the improvement of the grafting rate of the maleic anhydride grafted polypropylene can further enhance the compatibility between the polypropylene and the glass fiber.
(3) The compatibility of the glass fiber and the polypropylene is improved, so that the finally prepared glass fiber reinforced polypropylene has more excellent anti-corrosion performance, the addition amount of the glass fiber is optimized to 15-22%, and the anti-corrosion performance is improved on the basis of guaranteeing the basic mechanical properties of FRPP.
(4) By optimizing each processing technology and production parameters, the performance of the glass fiber reinforced polypropylene is further improved.
Detailed Description
The present invention will be further described in detail with reference to examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example 1:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: the preparation of maleic anhydride grafted polypropylene comprises the following steps:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion; the temperature of the twin-screw extruder was controlled at 180℃and the rotational speed was 100r/min.
S04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
S2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and a mixture of Irganox1010 and Irgafos168 in a high-speed mixer according to a certain proportion, wherein the mass ratio of the Irganox1010 to the Irgafos168 is 1:1, a step of;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate glass fibers, wherein the addition amount of the glass fibers is 15%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine. The injection molding temperature is 200 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
Example 2:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: the preparation of maleic anhydride grafted polypropylene comprises the following steps:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion; the temperature of the twin-screw extruder was controlled to 185℃and the rotational speed was 120r/min.
S04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
S2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and a mixture of Irganox1010 and Irgafos168 in a high-speed mixer according to a certain proportion, wherein the mass ratio of the Irganox1010 to the Irgafos168 is 1:1.5;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate glass fibers, wherein the addition amount of the glass fibers is 17%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine. The injection molding temperature is 210 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
Example 3:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: the preparation of maleic anhydride grafted polypropylene comprises the following steps:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion; the temperature of the twin-screw extruder was controlled at 200℃and the rotational speed was 130r/min.
S04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
S2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and a mixture of Irganox1010 and Irgafos168 in a high-speed mixer according to a certain proportion, wherein the mass ratio of the Irganox1010 to the Irgafos168 is 1:2;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate glass fibers, wherein the addition amount of the glass fibers is 20%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine. The injection molding temperature is 210 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
Example 4:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: the preparation of maleic anhydride grafted polypropylene comprises the following steps:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion; the temperature of the twin-screw extruder was controlled at 190℃and the rotational speed was 135r/min.
S04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
S2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and a mixture of Irganox1010 and Irgafos168 in a high-speed mixer according to a certain proportion, wherein the mass ratio of the Irganox1010 to the Irgafos168 is 1:2.2;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate glass fibers, wherein the addition amount of the glass fibers is 22%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine. The injection molding temperature is 215 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
Example 5:
a preparation method of corrosion-resistant FRPP plastic comprises the following steps:
s1: the preparation of maleic anhydride grafted polypropylene comprises the following steps:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion; the temperature of the twin-screw extruder was controlled at 200℃and the rotational speed was 150r/min.
S04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
S2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and a mixture of Irganox1010 and Irgafos168 in a high-speed mixer according to a certain proportion, wherein the mass ratio of the Irganox1010 to the Irgafos168 is 1:2.5;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate glass fibers, wherein the addition amount of the glass fibers is 21%;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine. The injection molding temperature is 225 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
The FRPP plastic particles prepared in examples 1-5 are subjected to performance test, five samples are placed in 30% hydrofluoric acid solution for 7 days to be soaked, mechanical performance test is performed again after corrosion, and compared with FRPP prepared by a traditional preparation method, the FRPP plastic particles are small in mechanical performance change.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The preparation method of the corrosion-resistant FRPP plastic is characterized by comprising the following steps of:
s1: preparing maleic anhydride grafted polypropylene;
s2: uniformly mixing the maleic anhydride grafted polypropylene prepared in the step S1, polypropylene and an antioxidant in a high-speed mixer according to a certain proportion;
s3: adding the materials into a double-screw extruder, and feeding the mixed melt after melting and plasticizing into a infiltration mold to infiltrate the glass fibers;
s4: preparing glass fiber reinforced polypropylene prepreg through drawing, cooling and granulating;
s5: and drying the prepared prepreg, and performing injection molding by an injection molding machine.
2. The method for preparing corrosion resistant FRPP plastic of claim 1, wherein the specific step of preparing maleic anhydride grafted polypropylene in S1 comprises:
s01: styrene and base oil are put into a high-speed mixer;
s02: placing polypropylene, MAH, di-tert-butyl isopropyl peroxide, fully mixed styrene and base oil into a high-speed mixer for uniform mixing;
s03: putting the mixed material with the S02 evenly mixed into a double-screw extruder for melt extrusion;
s04: and (5) traction granulation to obtain maleic anhydride grafted polypropylene.
3. The method for preparing corrosion resistant FRPP plastic of claim 1, characterized in that the glass fiber is added in an amount of 15-22%.
4. The method for preparing corrosion resistant FRPP plastic of claim 2, characterized in that the twin screw extruder is controlled to 180-200 ℃ at a rotational speed of 100-150 r/min.
5. The method for preparing corrosion resistant FRPP plastic of claim 1, characterized by the injection molding process parameters: the injection molding temperature is 200-225 ℃, the injection molding pressure is 60MPa, and the injection speed is 60r/min; back pressure 4MPa; the cooling time was 50s.
6. The method for preparing corrosion resistant FRPP plastic of claim 1, characterized in that the diameter of the glass fiber in S2 is 15-20 μm.
7. The method for preparing corrosion resistant FRPP plastic of claim 1, characterized in that the antioxidant is a mixture of Irganox1010 and Irgafos 168.
8. The method for preparing corrosion resistant FRPP plastic of claim 7, characterized in that the mass ratio of Irganox1010 to Irgafos168 is 1: (1-2.5).
9. The use of a corrosion resistant FRPP plastic prepared by the method of any one of claims 1 to 8 in a valve part of a pipe.
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| CN202211725210.8A CN116284890A (en) | 2022-12-30 | 2022-12-30 | Preparation method of corrosion-resistant FRPP plastic and application of FRPP plastic in pipe valve |
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| CN202211725210.8A CN116284890A (en) | 2022-12-30 | 2022-12-30 | Preparation method of corrosion-resistant FRPP plastic and application of FRPP plastic in pipe valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117510730A (en) * | 2023-10-24 | 2024-02-06 | 上海泽明塑胶有限公司 | Preparation method of polyolefin for nylon production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117510730A (en) * | 2023-10-24 | 2024-02-06 | 上海泽明塑胶有限公司 | Preparation method of polyolefin for nylon production |
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