CN113930016A - Polypropylene modified material, preparation method and application - Google Patents
Polypropylene modified material, preparation method and application Download PDFInfo
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- CN113930016A CN113930016A CN202111498492.8A CN202111498492A CN113930016A CN 113930016 A CN113930016 A CN 113930016A CN 202111498492 A CN202111498492 A CN 202111498492A CN 113930016 A CN113930016 A CN 113930016A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 147
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 147
- -1 Polypropylene Polymers 0.000 title claims abstract description 140
- 239000000463 material Substances 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 46
- 239000003365 glass fiber Substances 0.000 claims abstract description 41
- 239000002216 antistatic agent Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 32
- 239000000945 filler Substances 0.000 claims abstract description 31
- 229920001971 elastomer Polymers 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002250 absorbent Substances 0.000 claims abstract description 29
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- 239000006229 carbon black Substances 0.000 claims abstract description 29
- 239000000806 elastomer Substances 0.000 claims abstract description 29
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 230000004913 activation Effects 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 34
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 21
- 239000000155 melt Substances 0.000 claims description 19
- 125000000524 functional group Chemical group 0.000 claims description 13
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims description 11
- 238000004073 vulcanization Methods 0.000 claims description 11
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 239000005062 Polybutadiene Substances 0.000 claims description 7
- 229920002857 polybutadiene Polymers 0.000 claims description 7
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical group 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 5
- 229920006351 engineering plastic Polymers 0.000 claims description 5
- 238000002715 modification method Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
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- 230000005611 electricity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
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- 239000011593 sulfur Substances 0.000 description 3
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- 239000011206 ternary composite Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polypropylene modified material, a preparation method and application thereof. The polypropylene modified material comprises the following components: the polypropylene modified material is prepared from polypropylene, elastomer particles, activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent in proportion. And carrying out activation treatment based on the coupling agent to obtain the activated filler. Wherein the polypropylene modified material comprises the following components in parts by weight: 100-120 parts of polypropylene, 20-24 parts of elastomer particles, 12-16 parts of activated filler, 3-5 parts of antistatic agent, 2-3 parts of conductive powder, 4-6 parts of reactive compatibilizer, 10-13 parts of glass fiber, 1-3 parts of white carbon black and 1-3 parts of UV absorbent. The polypropylene modified material disclosed by the invention has the advantages that the impact strength is greatly improved, the toughness is increased, the strength and the rigidity of the material are ensured, the mechanical strength and the heat resistance are improved, the weather resistance and the dimensional stability are excellent, the antistatic protection is excellent, the application safety is improved, and the popularization prospect is good.
Description
Technical Field
The invention relates to the technical field of polypropylene modification, in particular to a polypropylene modified material, a preparation method of the polypropylene modified material and application of the polypropylene modified material.
Background
The polypropylene is a thermoplastic resin obtained by polymerizing propylene, is a white wax-like material, is transparent and light in appearance, and has a density of 0.89 to 0.91g/cm3The environment-friendly flame-retardant polyester resin is flammable, has a melting point of 165 ℃, is softened at about 155 ℃, has a use temperature range of-30-140 ℃, can resist corrosion of acid, alkali, salt solution and various organic solvents at a temperature below 80 ℃, can be decomposed at high temperature under the action of oxidation, and is widely applied.
However, when the polypropylene material is used, the polypropylene material has poor cold resistance, poor low temperature resistance and low impact strength, is easy to age under the influence of light and heat, has poor toughness and low antistatic degree, causes limited application and affects the use safety.
Disclosure of Invention
Therefore, it is necessary to provide a polypropylene modified material, a preparation method and an application thereof, aiming at the problems that when a current polypropylene material is used, the polypropylene modified material is poor in cold resistance, poor in low temperature resistance and low in impact strength, easy to age under the influence of light and heat, poor in toughness and low in antistatic degree, so that the application is limited and the use safety is influenced.
A polypropylene modified material, which comprises the following components: preparing polypropylene, elastomer particles, activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent in proportion to obtain the polypropylene modified material;
the weight ratio of the polypropylene to the elastomer particles is 5: 1; carrying out activation treatment based on a coupling agent to obtain the activated filler, wherein the activated filler is inorganic rigid particles;
the polypropylene modified material comprises the following components in parts by weight: 100-120 parts of polypropylene, 20-24 parts of elastomer particles, 12-16 parts of activated filler, 3-5 parts of antistatic agent, 2-3 parts of conductive powder, 4-6 parts of reactive compatibilizer, 10-13 parts of glass fiber, 1-3 parts of white carbon black and 1-3 parts of UV absorbent.
The polypropylene modified material has the advantages that the impact strength is greatly improved, the toughness is increased, the strength and the rigidity of the polypropylene modified material are ensured, the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the weather resistance and the size stability are excellent, meanwhile, the antistatic protection is excellent, the application safety is improved, and the popularization prospect is good.
In one embodiment, the elastomer particles are at least one of polyethylene, polyamide, ethylene-propylene rubber, ethylene-propylene-diene rubber, butadiene rubber, styrene-butadiene-styrene block copolymer, and ethylene-vinyl acetate copolymer.
In one embodiment, the content of the glass fiber in the polypropylene modified material is less than 40%, the fiber diameter of the glass fiber is greater than 15 μm, and the fiber length of the glass fiber is greater than 0.2 mm.
In one embodiment, the reactive compatibilizer participates in a chemical reaction to form a copolymer or performs a crosslinking reaction during blending, and the functional group of the reactive compatibilizer is at least one of a carboxylic anhydride, a carboxyl group, a carboxylic acid derivative group, an amino group, a hydroxyl group, an epoxy group, and an isocyanate.
Further, the polypropylene modified material comprises the following components in parts by weight: 105-115 parts of polypropylene, 21-23 parts of elastomer particles, 13-15 parts of activated filler, 3-4 parts of antistatic agent, 2-3 parts of conductive powder, 4-5 parts of reactive compatibilizer, 11-13 parts of glass fiber, 2-3 parts of white carbon black and 2-3 parts of UV absorbent.
Still further, the polypropylene modified material comprises the following components in parts by weight: 110 parts of polypropylene, 22 parts of elastomer particles, 14 parts of activated filler, 4 parts of antistatic agent, 3 parts of conductive powder, 5 parts of reactive compatibilizer, 12 parts of glass fiber, 2 parts of white carbon black and 2 parts of UV absorbent.
A preparation method of a polypropylene modified material is applied to the preparation of the polypropylene modified material, and comprises the following steps:
s1, activating by using a coupling agent to obtain an activated filler for later use;
s2 blending elastomeric particles into polypropylene in a ratio of 5: 1, then sequentially adding an activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent for mixing to obtain a thermoplastic elastomer;
the blending modification method specifically comprises the following operations:
s21, mixing elastomer particles and polypropylene, and mixing for 3-4 hours at the temperature of 100-105 ℃ to obtain a melt A;
s22, sequentially adding an activated filler, an antistatic agent, conductive powder and a reactive compatibilizer into the melt A, and mixing for 1-2 hours to obtain a melt B;
s23, adding glass fiber, white carbon black and a UV absorbent into the melt B in sequence under the action of high shear, and mixing for 30-50 min to obtain a thermoplastic elastomer;
s3 extruding the thermoplastic elastomer, and then carrying out vulcanization treatment to obtain the polypropylene modified material.
An application of modified polypropylene material in engineering plastics.
In one embodiment, the engineering plastic includes fan blades, a fan heater grill, a vane pump, a light housing, an electric fire, and a heater housing.
An application of modified polypropylene material in medical apparatus, automobile, conveying pipeline, chemical container and packing.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the elastomer particles and the polypropylene (PP) are adopted for blending modification, the impact energy is absorbed based on the elastomer particles, the absorbed impact energy is concentrated as stress to inhibit crack growth, and the polypropylene (PP) is converted from brittle fracture into ductile fracture, so that the effect of greatly improving the impact strength of the material is achieved, the toughness of the polypropylene (PP) can be effectively improved, and the strength and the rigidity of the polypropylene modified material are ensured while toughening is carried out.
According to the invention, the blending system is reinforced by doping the activated filler, the activated filler is activated by the coupling agent in advance, and an elastomer/inorganic rigid particle/polypropylene ternary composite toughening system is formed during modification, so that the polypropylene (PP) is toughened remarkably. The glass fiber is combined to be doped for enhancement and modification, so that the tensile strength of the polypropylene (PP) is improved, the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the water vapor resistance, the chemical corrosion resistance and the creep resistance are improved, and the hardness, the heat distortion temperature and the dimensional stability of the polypropylene (PP) are improved.
According to the invention, the antistatic agent and the conductive powder are doped for internal and external synergistic antistatic, the antistatic capability of the polypropylene modified material abraded in the use process is supplemented based on the doping of the antistatic agent, and the conductive powder is matched for transferring static electricity to carry out external static electricity removal, so that the antistatic protection of the polypropylene modified material is excellent, and the application safety is improved.
In conclusion, the impact strength of the polypropylene modified material is greatly improved, the toughness is increased, the strength and the rigidity of the polypropylene modified material are ensured, the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the weather resistance and the size stability are excellent, meanwhile, the antistatic protection is excellent, the application safety is improved, and the popularization prospect is good.
Detailed Description
The present invention is described in detail below.
In the following examples, the reagents and materials are commercially available without specific reference.
The invention provides a polypropylene modified material, which comprises the following components: the polypropylene modified material is prepared from polypropylene, elastomer particles, activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent in proportion. In the embodiment, the UV absorbent is adopted to absorb ultraviolet light, so that the anti-aging effect of the polypropylene modified material is excellent, and based on the ultraviolet light absorption effect, the anti-oxidation performance of white carbon black is combined, the weather resistance of the polypropylene modified material is enhanced, and the anti-dry cracking effect is improved.
The reactive compatibilizer participates in chemical reaction during blending to form a copolymer or performs crosslinking reaction, so that the compatibility of a blending system is improved, and the functional group of the reactive compatibilizer is at least one of carboxylic anhydride, carboxyl and carboxylic acid derivative groups, amino, hydroxyl, epoxy and isocyanate.
The weight ratio of the polypropylene to the elastomer particles is 5: 1. the elastomer particles are at least one of Polyethylene (PE), Polyamide (PA), Ethylene Propylene Rubber (EPR), Ethylene Propylene Diene Monomer (EPDM), butadiene rubber (ER), styrene-butadiene-styrene block copolymer (SBS) and ethylene-vinyl acetate copolymer (EVA). In the embodiment, an activated filler is doped to reinforce a blending system, the activated filler is subjected to activation treatment by a coupling agent (titanate coupling agent TMC-TTS) in advance, and an elastomer/inorganic rigid particle/polypropylene ternary composite toughening system is formed during modification to obviously toughen polypropylene (PP). The glass fiber is combined to be doped for enhancement and modification, so that the tensile strength of the polypropylene (PP) is improved, the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the water vapor resistance, the chemical corrosion resistance and the creep resistance are improved, and the hardness, the heat distortion temperature and the dimensional stability of the polypropylene (PP) are improved.
And carrying out activation treatment based on a coupling agent to obtain the activated filler. The activated filler is inorganic rigid particles. In the embodiment, the blending system is reinforced by doping the activated filler, the activated filler is activated by the coupling agent in advance, and an elastomer/inorganic rigid particle/polypropylene ternary composite toughening system is formed during modification to obviously toughen polypropylene (PP).
In the polypropylene modified material, the content of the glass fiber is less than 40%, the fiber diameter of the glass fiber is greater than 15 μm, and the fiber length of the glass fiber is greater than 0.2 mm. In the embodiment, the glass fiber is combined to carry out reinforcement modification, the tensile strength of the polypropylene (PP) is improved through the glass fiber, so that the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the water vapor resistance, the chemical corrosion resistance and the creep resistance are improved, and the hardness, the heat distortion temperature and the dimensional stability of the polypropylene (PP) are improved.
The polypropylene modified material comprises the following components in parts by weight: 100-120 parts of polypropylene, 20-24 parts of elastomer particles, 12-16 parts of activated filler, 3-5 parts of antistatic agent, 2-3 parts of conductive powder, 4-6 parts of reactive compatibilizer, 10-13 parts of glass fiber, 1-3 parts of white carbon black and 1-3 parts of UV absorbent. In this embodiment, the antistatic agent and the conductive powder are doped to perform internal and external synergistic antistatic, the antistatic ability of the polypropylene modified material abraded in the using process is supplemented based on the doping of the antistatic agent, and the conductive powder is matched to transfer static electricity to perform external static electricity removal, so that the antistatic protection of the polypropylene modified material is excellent, and the application safety is improved.
In summary, the polypropylene modified material of the present embodiment has the following advantages compared to the conventional polypropylene material: the polypropylene modified material of the embodiment has the advantages that the impact strength is greatly improved, the toughness is increased, the strength and the rigidity of the polypropylene modified material are ensured, the mechanical strength and the heat resistance of the polypropylene modified material are improved, in addition, the weather resistance and the size stability are excellent, meanwhile, the antistatic protection is excellent, the application safety is improved, and the popularization prospect is good.
Example 1
The embodiment provides a polypropylene modified material, which comprises the following components: the polypropylene modified material is prepared from polypropylene, ethylene propylene rubber, inorganic rigid particles, an antistatic agent, conductive powder, a reactive compatibilizer (carboxylic anhydride as a functional group), glass fiber, white carbon black and a UV absorbent in proportion.
The polypropylene modified material comprises the following components in parts by weight: 100 parts of polypropylene, 20 parts of elastomer particles, 12 parts of inorganic rigid particles, 3 parts of antistatic agent, 2 parts of conductive powder, 4 parts of reactive compatibilizer (functional group is carboxylic anhydride), 10 parts of glass fiber, 1 part of white carbon black and 1 part of UV absorbent.
The embodiment also provides a preparation method of the polypropylene modified material, which is applied to the preparation of the polypropylene modified material. The preparation method comprises the following steps:
s1 activating with titanate coupling agent TMC-TTS to obtain inorganic rigid particles for use.
S2 blending ethylene propylene rubber in polypropylene at a ratio of 5: 1, then adding inorganic rigid particles, an antistatic agent, conductive powder, a reactive compatibilizer (carboxyl anhydride as a functional group), glass fiber, white carbon black and a UV absorbent in sequence for mixing to obtain the thermoplastic elastomer.
The blending modification method specifically comprises the following operations:
s21 ethylene propylene rubber and polypropylene are mixed and mixed for 4 hours at the temperature of 100 ℃ to obtain a melt A.
S22, inorganic rigid particles, an antistatic agent, conductive powder and a reactive compatibilizer are sequentially added into the melt A and mixed for 1h to obtain a melt B.
S23, adding glass fiber, white carbon black and UV absorbent into the melt B in sequence under the action of high shear, and mixing for 30min to obtain the thermoplastic elastomer.
S3 extruding the thermoplastic elastomer, and then carrying out vulcanization treatment to obtain the polypropylene modified material.
Extruding a thermoplastic elastomer at the temperature of 200 ℃, then doping a cross-linking agent (sulfur) into the thermoplastic elastomer for cross-linking vulcanization, wherein in the vulcanization process, one or more sulfur atoms are connected on a polymer chain to form a bridge structure, so that the elastomer is generated, and the polypropylene modified material is endowed with certain elastic property, thereby providing convenience for subsequent application.
Example 2
The embodiment provides a polypropylene modified material, which comprises the following components: the polypropylene modified material is prepared from polypropylene, ethylene propylene diene monomer, inorganic rigid particles, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent in proportion.
The polypropylene modified material comprises the following components in parts by weight: 110 parts of polypropylene, 22 parts of ethylene propylene diene monomer, 14 parts of inorganic rigid particles, 4 parts of antistatic agent, 3 parts of conductive powder, 5 parts of reactive compatibilizer (functional groups are carboxylic anhydride, carboxyl and carboxylic acid derivative groups), 12 parts of glass fiber, 2 parts of white carbon black and 2 parts of UV absorbent.
The embodiment also provides a preparation method of the polypropylene modified material, which is applied to the preparation of the polypropylene modified material. The preparation method comprises the following steps:
s1 activating with titanate coupling agent TMC-TTS to obtain inorganic rigid particles for use.
S2 blending ethylene propylene diene monomer rubber into polypropylene in a ratio of 5: 1, then adding inorganic rigid particles, antistatic agent, conductive powder, reactive compatibilizer (functional groups are carboxylic anhydride, carboxyl and carboxylic acid derivative groups), glass fiber, white carbon black and UV absorbent in sequence, and mixing to obtain the thermoplastic elastomer.
The blending modification method specifically comprises the following operations:
s21 ethylene propylene diene monomer and polypropylene are mixed and mixed for 3.5 hours at the temperature of 102 ℃ to obtain a melt A.
S22 inorganic rigid particles, an antistatic agent, conductive powder and a reactive compatibilizer (functional groups are carboxylic anhydride, carboxyl and carboxylic acid derivative groups) are sequentially added into the melt A and mixed for 1.5h to obtain a melt B.
S23, adding glass fiber, white carbon black and UV absorbent into the melt B in sequence under the action of high shear, and mixing for 40min to obtain the thermoplastic elastomer.
S3 extruding the thermoplastic elastomer, and then carrying out vulcanization treatment to obtain the polypropylene modified material.
Extruding a thermoplastic elastomer at the temperature of 210 ℃, then doping a cross-linking agent (sulfur) into the thermoplastic elastomer for cross-linking vulcanization, wherein in the vulcanization process, one or more sulfur atoms are connected on a polymer chain to form a bridge structure, so that the elastomer is generated, and the polypropylene modified material is endowed with certain elastic property, thereby providing convenience for subsequent application.
Example 3
The embodiment provides a polypropylene modified material, which comprises the following components: the polypropylene modified material is prepared from polypropylene, butadiene rubber, inorganic rigid particles, an antistatic agent, conductive powder, a reactive compatibilizer (carboxylic anhydride as a functional group), glass fiber, white carbon black and a UV absorbent in proportion.
The polypropylene modified material comprises the following components in parts by weight: 120 parts of polypropylene, 24 parts of butadiene rubber, 16 parts of inorganic rigid particles, 5 parts of antistatic agent, 3 parts of conductive powder, 6 parts of reactive compatibilizer (functional group is carboxylic anhydride), 13 parts of glass fiber, 3 parts of white carbon black and 3 parts of UV absorbent.
The embodiment also provides a preparation method of the polypropylene modified material, which is applied to the preparation of the polypropylene modified material. The preparation method comprises the following steps:
s1 activating with titanate coupling agent TMC-TTS to obtain inorganic rigid particles for use.
S2 blending butadiene rubber in polypropylene to give a blend of 5: 1, then adding inorganic rigid particles, an antistatic agent, conductive powder, a reactive compatibilizer (carboxyl anhydride as a functional group), glass fiber, white carbon black and a UV absorbent in sequence for mixing to obtain the thermoplastic elastomer.
The blending modification method specifically comprises the following operations:
s21 butadiene rubber and polypropylene were mixed and kneaded at 105 ℃ for 3 hours to obtain melt A.
S22, inorganic rigid particles, an antistatic agent, conductive powder and a reactive compatibilizer (carboxylic anhydride as a functional group) are sequentially added into the melt A and mixed for 2 hours to obtain a melt B.
S23, adding glass fiber, white carbon black and UV absorbent into the melt B in sequence under the action of high shear, and mixing for 50min to obtain the thermoplastic elastomer.
S3 extruding the thermoplastic elastomer, and then carrying out vulcanization treatment to obtain the polypropylene modified material.
Extruding a thermoplastic elastomer at 215 ℃, then doping a cross-linking agent (sulfur) into the thermoplastic elastomer for cross-linking vulcanization, wherein in the vulcanization process, one or more sulfur atoms are connected on a polymer chain to form a bridge structure to generate the elastomer, and the polypropylene modified material is endowed with certain elastic property, thereby providing convenience for subsequent application.
For the naming of each component referred to, the function described in the specification is used as the standard for naming, but is not limited by the specific term used in the present invention, and those skilled in the art can also select other terms to describe each component name of the present invention.
Claims (10)
1. The polypropylene modified material is characterized by comprising the following components: preparing polypropylene, elastomer particles, activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent in proportion to obtain the polypropylene modified material;
the weight ratio of the polypropylene to the elastomer particles is 5: 1; carrying out activation treatment based on a coupling agent to obtain the activated filler, wherein the activated filler is inorganic rigid particles;
the polypropylene modified material comprises the following components in parts by weight: 100-120 parts of polypropylene, 20-24 parts of elastomer particles, 12-16 parts of activated filler, 3-5 parts of antistatic agent, 2-3 parts of conductive powder, 4-6 parts of reactive compatibilizer, 10-13 parts of glass fiber, 1-3 parts of white carbon black and 1-3 parts of UV absorbent.
2. The polypropylene modified material of claim 1, wherein the elastomer particles are at least one of polyethylene, polyamide, ethylene-propylene rubber, ethylene-propylene-diene rubber, butadiene rubber, styrene-butadiene-styrene block copolymer, and ethylene-vinyl acetate copolymer.
3. The polypropylene modification material of claim 1, wherein the content of the glass fiber in the polypropylene modification material is < 40%, the fiber diameter of the glass fiber is >15 μm, and the fiber length of the glass fiber is >0.2 mm.
4. The polypropylene modified material of claim 1, wherein the reactive compatibilizer participates in chemical reaction during blending to form a copolymer or performs a crosslinking reaction, and the functional group of the reactive compatibilizer is at least one of carboxylic anhydride, carboxyl and carboxylic acid derivative group, amino group, hydroxyl group, epoxy group and isocyanate.
5. The polypropylene modified material according to claim 4, wherein the polypropylene modified material comprises the following components in parts by weight: 105-115 parts of polypropylene, 21-23 parts of elastomer particles, 13-15 parts of activated filler, 3-4 parts of antistatic agent, 2-3 parts of conductive powder, 4-5 parts of reactive compatibilizer, 11-13 parts of glass fiber, 2-3 parts of white carbon black and 2-3 parts of UV absorbent.
6. The polypropylene modified material according to claim 5, wherein the polypropylene modified material comprises the following components in parts by weight: 110 parts of polypropylene, 22 parts of elastomer particles, 14 parts of activated filler, 4 parts of antistatic agent, 3 parts of conductive powder, 5 parts of reactive compatibilizer, 12 parts of glass fiber, 2 parts of white carbon black and 2 parts of UV absorbent.
7. A method for preparing a polypropylene modified material, which is applied to the preparation of the polypropylene modified material as described in any one of claims 1 to 6, wherein the method comprises the following steps:
s1, activating by using a coupling agent to obtain an activated filler for later use;
s2 blending elastomeric particles into polypropylene in a ratio of 5: 1, then sequentially adding an activated filler, an antistatic agent, conductive powder, a reactive compatibilizer, glass fiber, white carbon black and a UV absorbent for mixing to obtain a thermoplastic elastomer;
the blending modification method specifically comprises the following operations:
s21, mixing elastomer particles and polypropylene, and mixing for 3-4 hours at the temperature of 100-105 ℃ to obtain a melt A;
s22, sequentially adding an activated filler, an antistatic agent, conductive powder and a reactive compatibilizer into the melt A, and mixing for 1-2 hours to obtain a melt B;
s23, adding glass fiber, white carbon black and a UV absorbent into the melt B in sequence under the action of high shear, and mixing for 30-50 min to obtain a thermoplastic elastomer;
s3 extruding the thermoplastic elastomer, and then carrying out vulcanization treatment to obtain the polypropylene modified material.
8. An application of modified polypropylene material in engineering plastics.
9. The use of the polypropylene modified material in engineering plastics according to claim 8, wherein the engineering plastics comprise fan blades, warm air blower grilles, impeller pumps, lamp housings, electric furnaces and heater housings.
10. An application of modified polypropylene material in medical apparatus, automobile, conveying pipeline, chemical container and packing.
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Cited By (1)
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