CN111171443A - Special polypropylene reinforcing material for water pump and preparation method thereof - Google Patents
Special polypropylene reinforcing material for water pump and preparation method thereof Download PDFInfo
- Publication number
- CN111171443A CN111171443A CN201911382583.8A CN201911382583A CN111171443A CN 111171443 A CN111171443 A CN 111171443A CN 201911382583 A CN201911382583 A CN 201911382583A CN 111171443 A CN111171443 A CN 111171443A
- Authority
- CN
- China
- Prior art keywords
- water pump
- polypropylene
- glass fiber
- special
- reinforcing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 97
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 96
- -1 polypropylene Polymers 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000012779 reinforcing material Substances 0.000 title claims description 17
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000003365 glass fiber Substances 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 65
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 6
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000012668 chain scission Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 12
- 239000003963 antioxidant agent Substances 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 238000007605 air drying Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- 238000003828 vacuum filtration Methods 0.000 claims description 8
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- PKDCQJMRWCHQOH-UHFFFAOYSA-N triethoxysilicon Chemical compound CCO[Si](OCC)OCC PKDCQJMRWCHQOH-UHFFFAOYSA-N 0.000 claims description 5
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000011256 inorganic filler Substances 0.000 claims description 2
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 150000007970 thio esters Chemical class 0.000 claims description 2
- 239000012760 heat stabilizer Substances 0.000 claims 1
- 150000002989 phenols Chemical class 0.000 claims 1
- 239000004033 plastic Substances 0.000 abstract description 10
- 229920003023 plastic Polymers 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 230000009172 bursting Effects 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000013329 compounding Methods 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 239000008235 industrial water Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 239000011257 shell material Substances 0.000 description 9
- 238000005469 granulation Methods 0.000 description 7
- 230000003179 granulation Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group 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 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical group CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002656 Distearyl thiodipropionate Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 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 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000019305 distearyl thiodipropionate Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
Classifications
-
- 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
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
-
- 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
- C08J2451/00—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
- C08J2451/06—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a high-strength high-fluidity polypropylene reinforced material special for a water pump and a preparation method thereof. The invention adopts the compounding of long glass fiber composite material and chopped glass fiber as a filling main body, takes high-melting high-crystallization copolymerized PP as a main raw material, and uses 2, 5-dimethyl-2, 5-di (tert-butyl peroxy) hexane as a chain breaking agent to prepare the glass fiber reinforced polypropylene chain-breaking agent by twin-screw extrusion. The invention solves the problems of short service time, easy damage and easy water leakage of the water pump caused by insufficient weld line strength when the industrial water pump is blasted by plastic strip steel materials. The material prepared by the invention has the characteristics of high strength, high fluidity, high weld line strength and the like, and can improve the original bursting pressure of the water pump by 20% under the standard experimental condition and prolong the time of the pressure at the bursting point by 50%.
Description
Technical Field
The invention relates to the technical field of macromolecules, and particularly relates to a special polypropylene reinforcing material for a water pump and a preparation method thereof.
Background
The plastic product has the characteristics of low cost, strong plasticity and the like and is widely applied to industry, agriculture and daily life. In recent years, the plastic product industry in China keeps a rapidly developing situation, and the plastic product yield and the plastic product export amount are the first global position. With the development of economy, the water pump industry has the status of gradually replacing steel. In recent years, the water pump industry also enters a lightweight age, the models are more household and portable, wherein the original shell material is steel, but the original shell material has the defects of heavy self weight and inconvenient carrying and is a consumer.
Polypropylene (PP) has excellent physical properties and processability such as light specific gravity, low price, good mechanical property, good heat resistance and the like, is solvent-resistant and high-temperature-resistant, is the fastest-developing material in general plastics, and is widely applied to automotive upholsteries and household appliance products. In the production process of polypropylene, various heat/oxidation resistant stabilizers, ultraviolet resistant stabilizers and the like are generally added according to requirements in the extrusion granulation process in order to improve the aging resistance of the polypropylene. In order to meet the requirements of users in food packaging, medical products, general fiber spinning, high-flow high-strength yarn and other aspects, a controllable rheological process technology is also commonly adopted to enable polypropylene resin with lower fluidity to achieve the desired fluidity through a reactive extrusion process.
However, due to the particularity of the water pump parts, the parts are complex, have more circular holes, and have strict requirements on physical properties and water pressure resistance of finished products. The strength of the polypropylene is difficult to meet the requirement by directly using the conventional polypropylene; the conventional long glass fiber or short fiber reinforced product is used, and a large number of welding lines are formed in injection molding due to more circular holes, so that the welding lines are firstly broken due to weak strength in a water pressure resistance test.
In order to improve the living environment of people, reduce the consumption of steel and facilitate the normal life of people, the development of the high-strength high-fluidity reinforcing material for the water pump is very necessary. In order to solve the problem that the short plate of the plastic water pump shell on the water pressure resistance test needs to be solved not only by the structure of the short plate but also by the strength of the shell material of the short plate at the welding line, and the problem that the shell material of the water pump replaces steel by plastic is solved integrally.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a high-strength high-fluidity high-melt-line-strength reinforced polypropylene material for a water pump and a preparation method thereof.
The high-strength high-fluidity high-weld-line-strength reinforced polypropylene material prepared by the method greatly improves the compressive strength of the water pump shell by improving the fluidity, weld line strength and the like of polypropylene.
The technical scheme of the invention is as follows: a special polypropylene reinforced material for a water pump is composed of the following raw materials in parts by weight:
the long glass fiber master batch is a long glass fiber polypropylene composite material with the glass fiber content of 48-52 wt%,
the polypropylene is at least one of syndiotactic polypropylene and isotactic polypropylene with melt index of 10-15g/10 min.
Furthermore, the long glass fiber master batch is prepared by performing surface coating on long glass fibers by a die head and then granulating the long glass fibers by using a polypropylene material with low melt viscosity and a base material of which the melting finger is 100-120g/10min, wherein the particle length of the master batch is 7-11mm, the tensile strength is not less than 135MPa, the bending strength is not less than 175MPa, the bending modulus is not less than 10500MPa, and the notched impact strength of a cantilever beam is not less than 25Kj/m2。
Further, the compatilizer is polypropylene grafted maleic anhydride with the grafting rate of 1.5-2.0 wt%.
Further, the chopped glass fiber is alkali-free glass fiber with the diameter of 13-15 mu m, the chopped length of 3-4.5mm and the water content of less than or equal to 3 percent.
Further, the silane coupling agent is at least one of butadiene-based triethoxysilane and bis- [ gamma- (triethoxy silicon) propyl ] tetrasulfide (Si-69).
furthermore, the hindered phenol is pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1010), the thioester is distearyl thiodipropionate (antioxidant DSTP), and the phosphite is tris (2, 4-di-tert-butylphenyl) phosphite (antioxidant 168).
Further, the lubricant is selected from at least one of polyethylene wax, stearate, ethylene bis stearamide and grafted ethylene bis stearamide.
Further, the chain scission agent is 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane or master batch of [2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane ] thereof and taking white carbon black or inorganic filler as a base material.
The invention also aims to provide a preparation method of the special polypropylene reinforcing material for the water pump, which comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers for 10min at a low speed by using an ethanol solution of a silane coupling agent, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electric heating constant-temperature forced air drying oven at the temperature of 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the chain scission agent, the antioxidant and the lubricant into a mixer which is filled with nitrogen for protection, and mixing for 2-10 minutes at high speed;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber treated in the step (1) from a side feeding port of the extruder, and extruding and granulating to obtain a primary material of the polypropylene reinforcing material special for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
Compared with the prior art, the special polypropylene reinforcing material for the water pump has the following beneficial effects:
1. the special polypropylene for the water pump shell is prepared from general PP (polypropylene) base materials, chopped glass fibers, long glass fiber master batches, a chain breaking agent, a compatilizer, a lubricant and an antioxidant, and the raw materials are easily available and can be directly used for industrial production; and the waste plastic source PP can be used to solve the problem of recycling the waste plastic source PP.
2. The special polypropylene for the water pump shell, which is prepared by the invention, adopts a short fiber composite material as a main strength body of a supporting material, adopts medium-melting isotactic homopolymerized PP as a main raw material, adopts a chain breaking agent as a guarantee of melting fingers, and adopts a long glass fiber material with high physical and mechanical properties as a supplement of strength, so that the strength of a welding line is improved on the basis of guaranteeing the strength of the material, and the special part characteristics and the use environment of the water pump shell are met.
3. The invention uses special high-melting-line-strength high-fluidity polypropylene, on the basis of ensuring the integral strength of a finished piece, the strength of a large number of welding lines caused by more round holes is greatly enhanced, and long and short fibers are compounded, so that the rigidity of the material is further improved, and the burst pressure and the time of a pressure-resistant point are improved.
4. The invention solves the problems of light weight and household use of the water pump from the material aspect, the prepared material has the characteristics of environmental protection, high strength, high fluidity, high welding line strength, recoverability and the like, the original bursting pressure of the water pump can be improved by 20% under the standard experimental condition, and the time of the pressure at the bursting point is prolonged by 50%; can be widely applied to the water pump industry.
Detailed Description
The invention will now be further described with reference to the following examples, which are intended to illustrate, but not limit the invention.
As used in the following examples and comparative examples:
1) the silane coupling agent is butadiene-based triethoxysilane;
2) the chain scission agent is 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane;
3) the compatilizer is PP-g-MAH;
4) the long glass fiber master batch is a long glass fiber coated polypropylene composite material (the content of glass fiber is 50 wt%), the base material is a polypropylene material with low melt viscosity (melting index is 100-120g/10min), and the long glass fiber master batch (sold in the market, Shanghai nayan new material) is prepared by performing surface coating on long glass fiber through a die head and then performing grain cutting.
Comparative example one:
the polypropylene special for the water pump in the comparative example is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber treated in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene material for the water pump prepared in the step (3) and the long glass fiber master batch into a mixer with nitrogen protection for low-speed mixing for 5 minutes to obtain the special polypropylene material for the water pump.
The first embodiment is as follows:
the special reinforced polypropylene for the water pump in the embodiment is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant, the chain scission agent and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber processed in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene reinforced primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
Comparative example two:
the polypropylene special for the water pump in the comparative example is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant, the chain scission agent and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber treated in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene material for the water pump prepared in the step (3) and the long glass fiber master batch into a mixer with nitrogen protection for low-speed mixing for 5 minutes to obtain the special polypropylene material for the water pump.
The main physical indexes of the polypropylene special for the water pump prepared in the embodiment 1 and the comparative examples 1 and 2 are tested according to related detection standards, such as melt finger, tensile strength, weld line tensile strength, elongation at break, bending strength, bending modulus, cantilever beam notch impact strength, density, ash content, representative machine type burst pressure and burst pressure point duration, and the detection standards and detection results are shown in the following table 1:
table 1: main physical property indexes of polypropylene special for water pumps of comparative examples 1 and 2 and example 1
As can be seen from table 1:
1) examples one comparative example without the addition of the chain scission agent slightly reduced the tensile properties, flexural properties and impact due to the loss of properties caused by the shortening of the molecular chain caused by the addition of the chain scission agent, the degree of reduction was limited because the main properties of the reinforced polypropylene were provided by the compatibility of the glass fibers and the glass fibers with the substrate, but the tensile strength at break of the fuse finger and the fuse line was significantly improved (50%), and the burst pressure and duration were increased due to the improved tensile strength of the fuse line;
2) the polypropylene material with high melt index was used in the comparative example, but the weld line strength was improved as a result, but was still lower than that of the example one and had no advantage in terms of burst pressure and duration; in addition, from the viewpoint of cost, the cost increase of the high melting point PP is far higher than that of the chain scission agent, and the performance is not likely to be improved.
Example two:
the special reinforced polypropylene for the water pump in the embodiment is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant, the chain scission agent and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber processed in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene reinforced primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
Example three:
the special reinforced polypropylene for the water pump in the embodiment is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant, the chain scission agent and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber processed in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene reinforced primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
Example four:
the special reinforced polypropylene for the water pump in the embodiment is prepared from the following raw materials in parts by weight:
the preparation method comprises the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers at a low speed for 10min by using an ethanol solution of a silane coupling agent with the mass percentage concentration of 10%, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electrothermal constant-temperature forced air drying oven at 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the antioxidant, the chain scission agent and the lubricant into a mixer with nitrogen protection, and mixing at high speed for 2-10 minutes;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber processed in the step (1) from a side feeding port of the extruder, and performing extrusion and granulation to obtain the special polypropylene reinforced primary material for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
The main physical indexes of the special reinforced polypropylene for water pumps prepared in the above examples 2, 3 and 4 are tested according to the relevant test standards, such as the melt finger, the tensile strength, the weld line tensile strength, the elongation at break, the bending strength, the bending modulus, the cantilever beam notch impact strength, the density, the ash content, the representative model burst pressure and the burst pressure point duration, and the test standards and the test results are shown in the following table 2:
table 2: main physical property indexes of special reinforced polypropylene for water pumps of examples 2, 3 and 4
As can be seen from table 2:
1) in the second embodiment, the mechanical property strength is improved by adopting a method for improving the content of the long glass fiber master batch, but although the mechanical property is obviously improved, the welding line strength and the blasting property are not positively influenced, and the long glass fiber master batch is generally high in selling price and is not recommended to be added too much in consideration of the cost;
2) in the third embodiment and the fourth embodiment, the content of the chain scission agent is increased on the basis of the original formula, the tensile strength and the bursting property of the weld line are obviously improved, and the use of a high-standard export machine type of a client can be met, but the mechanical property in the fourth embodiment is reduced to the average value of the properties of a common PP +30GF material, and the phenomenon of fracture and cracking of other parts of a workpiece caused by the reduction of the mechanical property is possibly caused by the increase of the content of the chain scission agent.
If functional additives such as ultraviolet light absorbers, light stabilizers, antistatic agents, coloring agents and the like are added into the preparation components, the composite material has corresponding characteristics and is also protected by the invention.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (9)
1. A special polypropylene reinforcing material for a water pump is characterized in that: the composition comprises the following raw materials in parts by weight:
41.5 to 50.5 portions of polypropylene,
30-50 parts of long glass fiber master batch,
5-15 parts of short-cut glass fiber,
2-3 parts of a compatilizer,
0.3 part of silane coupling agent,
0.2 part of an antioxidant, namely,
0.5 part of a lubricating agent is added,
0.5 to 2 portions of chain scission agent,
the long glass fiber master batch is a long glass fiber polypropylene composite material with the glass fiber content of 48-52 wt%, and the polypropylene is at least one of syndiotactic polypropylene and isotactic polypropylene with the melt index of 10-15g/10 min.
2. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the long glass fiber master batch is prepared by performing surface coating on long glass fibers by a die head and then granulating by using a polypropylene material with low melt viscosity and a base material of 100-120g/10min as a melting finger, wherein the particle length of the master batch is 7-11mm, the tensile strength is not less than 135MPa, the bending strength is not less than 175MPa, the bending modulus is not less than 10500MPa, and the notched impact strength of a cantilever beam is not less than 25Kj/m2。
3. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the chopped glass fiber is alkali-free glass fiber with the diameter of 13-15 mu m, the chopped length of 3-4.5mm and the water content of less than or equal to 3 percent.
4. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the compatilizer is polypropylene grafted maleic anhydride with the grafting rate of 1.5-2.0 wt%.
5. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the silane coupling agent is at least one of butadiene-based triethoxysilane and bis- [ gamma- (triethoxy silicon) propyl ] tetrasulfide.
6. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the antioxidant is at least one of hindered phenols, thioesters and phosphite heat stabilizers.
7. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the lubricant is selected from at least one of polyethylene wax, stearate, ethylene bis stearamide and grafted ethylene bis stearamide.
8. The special polypropylene reinforcing material for the water pump as claimed in claim 1, wherein: the chain scission agent is 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane or master batch thereof taking white carbon black or inorganic filler as a base material.
9. The method for preparing the special polypropylene reinforcing material for the water pump as claimed in claim 1, is characterized by comprising the following steps:
(1) drying the chopped glass fibers, stirring and refluxing the dried chopped glass fibers for 10min at a low speed by using an ethanol solution of a silane coupling agent, standing the mixture at room temperature for 12h, carrying out vacuum filtration, and drying the mixture in an electric heating constant-temperature forced air drying oven at the temperature of 80 ℃ to constant weight to obtain surface-treated chopped glass fibers for later use;
(2) adding the polypropylene, the compatilizer, the chain scission agent, the antioxidant and the lubricant into a mixer which is filled with nitrogen for protection, and mixing for 2-10 minutes at high speed;
(3) under the protection of nitrogen, putting the mixed material obtained in the step (2) into a parallel double-screw extruder for melting, adding the chopped glass fiber treated in the step (1) from a side feeding port of the extruder, and extruding and granulating to obtain a primary material of the polypropylene reinforcing material special for the water pump; wherein the barrel temperature of the extruder is 205-220 ℃, the screw rotating speed is 400-600r/min, the vacuum degree is-0.04-0.1 MPa, the granulator is a double-shaft speed-adjustable granulator, and the length of the cut primary material particles is controlled to be 7-11 mm;
(4) and (4) adding the special polypropylene reinforced preliminary material for the water pump and the long glass fiber master batch prepared in the step (3) into a mixer with nitrogen protection, and mixing at a low speed for 5 minutes to obtain the special polypropylene reinforced material for the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382583.8A CN111171443A (en) | 2019-12-27 | 2019-12-27 | Special polypropylene reinforcing material for water pump and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382583.8A CN111171443A (en) | 2019-12-27 | 2019-12-27 | Special polypropylene reinforcing material for water pump and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111171443A true CN111171443A (en) | 2020-05-19 |
Family
ID=70649061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911382583.8A Pending CN111171443A (en) | 2019-12-27 | 2019-12-27 | Special polypropylene reinforcing material for water pump and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111171443A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795099A (en) * | 2021-01-18 | 2021-05-14 | 会通新材料股份有限公司 | Polypropylene reinforcing material for water purifier integrated water circuit board and preparation method thereof |
| CN115418053A (en) * | 2022-09-30 | 2022-12-02 | 金发科技股份有限公司 | Application of combination of low isotactic polypropylene and phlogopite as additive for improving weld line strength and mechanical property of polypropylene product |
| CN116003912A (en) * | 2023-02-10 | 2023-04-25 | 创合新材料科技江苏有限公司 | Special polypropylene reinforcing material for micro-crosslinked high-pressure-resistant water pump and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589058A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Reinforced polypropylene composite material and preparation method thereof |
| CN108752743A (en) * | 2018-06-07 | 2018-11-06 | 广东聚石化学股份有限公司 | A kind of Long Glass Fiber Reinforced PP Composite and preparation method thereof |
| CN110511490A (en) * | 2019-09-25 | 2019-11-29 | 青岛海尔新材料研发有限公司 | A kind of Long Glass Fiber Reinforced PP Composite and preparation method thereof |
-
2019
- 2019-12-27 CN CN201911382583.8A patent/CN111171443A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589058A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Reinforced polypropylene composite material and preparation method thereof |
| CN108752743A (en) * | 2018-06-07 | 2018-11-06 | 广东聚石化学股份有限公司 | A kind of Long Glass Fiber Reinforced PP Composite and preparation method thereof |
| CN110511490A (en) * | 2019-09-25 | 2019-11-29 | 青岛海尔新材料研发有限公司 | A kind of Long Glass Fiber Reinforced PP Composite and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795099A (en) * | 2021-01-18 | 2021-05-14 | 会通新材料股份有限公司 | Polypropylene reinforcing material for water purifier integrated water circuit board and preparation method thereof |
| CN112795099B (en) * | 2021-01-18 | 2022-03-01 | 会通新材料股份有限公司 | Polypropylene reinforcing material for water purifier integrated water circuit board and preparation method thereof |
| CN115418053A (en) * | 2022-09-30 | 2022-12-02 | 金发科技股份有限公司 | Application of combination of low isotactic polypropylene and phlogopite as additive for improving weld line strength and mechanical property of polypropylene product |
| CN115418053B (en) * | 2022-09-30 | 2023-12-22 | 金发科技股份有限公司 | Application of combination of low isotactic polypropylene and phlogopite as additive for improving weld line strength and mechanical property of polypropylene product |
| CN116003912A (en) * | 2023-02-10 | 2023-04-25 | 创合新材料科技江苏有限公司 | Special polypropylene reinforcing material for micro-crosslinked high-pressure-resistant water pump and preparation method and application thereof |
| CN116003912B (en) * | 2023-02-10 | 2024-01-09 | 创合新材料科技江苏有限公司 | Special polypropylene reinforcing material for micro-crosslinked high-pressure-resistant water pump and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111171443A (en) | Special polypropylene reinforcing material for water pump and preparation method thereof | |
| CN101195707B (en) | Glass fiber-reinforced nylon 6-polypropylene alloy material | |
| CN110982181B (en) | Polypropylene composite material and preparation method and application thereof | |
| CN108250586B (en) | PP/PMMA alloy material and preparation method and application thereof | |
| JP2017502106A (en) | High heat resistant ABS resin composition suitable for blow molding and method for preparing the same | |
| CN109081894B (en) | High-fluidity toughening agent and preparation method thereof | |
| KR20190047185A (en) | Graft copolymer, thermoplastic resin composition containing the same and method for preparing the thermoplastic resin | |
| CN101759910A (en) | Extruding blow-molding level glass fiber reinforced polypropylene composite material and preparation method thereof | |
| CN103694563A (en) | Novel high-gloss fiberglass-reinforced polypropylene composite material and preparation method thereof | |
| CN109627582A (en) | A kind of lightweight, high tenacity and polypropene composition of high rigidity and preparation method thereof | |
| CN105237943A (en) | Rigidity-reinforced polyformaldehyde composite material and preparation method thereof | |
| CN112574502A (en) | Degradable high-performance plant fiber filled polypropylene composite material and preparation method thereof | |
| CN110862684A (en) | POK/PPS composite material and preparation method thereof | |
| CN111647260B (en) | PC/ABS alloy for tail lamp housing and preparation method thereof | |
| CN112521707A (en) | Super-weather-resistant high-tensile-strength high-impact polystyrene material and preparation method thereof | |
| CN115521535B (en) | High-impact recycled polypropylene resin material and preparation method thereof | |
| CN103694613B (en) | A kind of low floating fine fiberglass reinforced toughened polypropylene composite and preparation method thereof | |
| CN1218998C (en) | Polyethanediol terephthalate composition and its preparation method | |
| CN103788389B (en) | A kind of long glass fiber reinforced polypropylene and preparation method thereof | |
| CN113462150B (en) | Flame-retardant nylon composite material and preparation method thereof | |
| CN112724501B (en) | Toughened composite, PBT composite material and preparation method thereof | |
| CN112341686B (en) | Environment-friendly cosmetic hose with high PCR content and manufacturing process thereof | |
| CN108676376B (en) | Modified plastic and preparation method thereof | |
| CN111925563A (en) | High-impact-resistance injection molding grade biological starch plastic and preparation method thereof | |
| CN108659367B (en) | Composition for transparent washing machine cover and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200519 |