CN111363254A - High-wear-resistance PP rope - Google Patents
High-wear-resistance PP rope Download PDFInfo
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- CN111363254A CN111363254A CN202010333940.8A CN202010333940A CN111363254A CN 111363254 A CN111363254 A CN 111363254A CN 202010333940 A CN202010333940 A CN 202010333940A CN 111363254 A CN111363254 A CN 111363254A
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- 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
- C08L23/14—Copolymers of propene
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- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/06—Propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a high-wear-resistance PP rope which comprises the following raw materials in parts by weight: 100 portions of modified polypropylene 150 portions, 15 to 20 portions of filler, 6 to 12 portions of ethylene propylene diene monomer, 0.5 to 1.2 portions of plasticizer, 0.3 to 0.5 portion of antioxidant, 1.5 to 3 portions of paraffin oil and 0.5 to 1 portion of lubricant; modifying polypropylene per se, and introducing organic silicon in a bonding mode, wherein the modifying method specifically comprises the following steps: the method adopts an emulsion polymerization mode, firstly, propylene monomers are subjected to prepolymerization, then, a modifier is added, and double bonds on the modifier are copolymerized with propylene so as to be embedded into polypropylene to obtain the polypropylene containing organosilicon.
Description
Technical Field
The invention belongs to the technical field of plastics, and particularly relates to a high-wear-resistance PP rope.
Background
Most of the plastic ropes on the market today are made of polypropylene (PP), which has been the most rapidly growing major thermoplastic, especially in the area of fibres and filaments, film extrusion, injection moulding, etc. The excellent flow properties of polypropylene, coupled with a wide range of flow rates, and other unique polymer characteristics, provide excellent processability. The lower flow rate can meet the processing requirements of extruded belts, strip-shaped filaments, monofilaments and the like, and can also enable the finished product to have tensile strength and low extensibility, and meanwhile, enough transverse integrity is kept, so that the splitting and dust flying conditions on the guide device of the silk winder are minimized. The main characteristics are as follows: no toxicity, no smell, low density, high strength, rigidity, hardness and heat resistance superior to low pressure polypropylene and high bending fatigue strength. The traditional wear-resistant plastic is prepared by adding related wear-resistant additives into a polypropylene matrix, so that the wear resistance of plastic wires is improved, but a good wear-resistant effect can be achieved only when the addition amount of the wear-resistant additives is large, and the mechanical property and the flexibility of the plastic matrix are greatly reduced due to the addition of a large amount of the additives.
Disclosure of Invention
The invention aims to provide a high-wear-resistance PP rope, which modifies polypropylene, introduces organic silicon in a bonding mode, increases the unit density of a polypropylene chain segment, greatly improves the mechanical strength and flexibility of the polypropylene, enhances the bearing stress and further improves the wear resistance of the PP rope.
The purpose of the invention can be realized by the following technical scheme:
a high wear-resistant PP rope comprises the following raw materials in parts by weight: 100 portions of modified polypropylene, 15 to 20 portions of filler, 6 to 12 portions of ethylene propylene diene monomer, 0.5 to 1.2 portions of plasticizer, 0.3 to 0.5 portion of antioxidant, 1.5 to 3 portions of paraffin oil and 0.5 to 1 portion of lubricant.
Further, the preparation method of the modified polypropylene comprises the following steps:
s1 preparation of modifier
Adding 1mol of 1-octyne, 1.05-1.1mol of bis (trimethylsilyloxy) methylsilane, a catalyst and 1L of isopropanol serving as a solvent into a reaction kettle, introducing nitrogen for 10-15min, displacing air in the reaction kettle, heating to 80-85 ℃ while stirring, preserving heat, stirring, reacting for 6-8h, removing the solvent by rotary evaporation after the reaction is finished, washing with anhydrous ether, and drying to obtain the modifier shown in the formula N; the reaction formula is shown as follows:
s2 preparation of modified polypropylene
Adding 1kg of deionized water, 1-2g of emulsifier, 1-1.5g of initiator and 70-80g of propylene monomer into a reaction kettle, transferring the reaction kettle into a water bath kettle, carrying out prepolymerization reaction at 55-60 ℃ for 30-40min, then removing the reaction kettle from the water bath kettle, naturally cooling to room temperature, sequentially adding 0.3-0.5g of emulsifier, 0.4-0.6g of initiator, 5-7g of modifier and 15-20g of propylene monomer, putting the reaction kettle into the water bath kettle again, carrying out copolymerization reaction at 85-90 ℃ for 2-3h, adding 100ml of methanol and 50-60ml of saturated salt water for demulsification, filtering, washing and drying to obtain the modified polypropylene.
Further, in step S1, the catalyst is chloroplatinic acid, and the addition amount of the catalyst is 2-4 mmol.
Further, in step S2, the emulsifier is polyoxypropylene ether; the initiator is sodium persulfate.
Further, the filler is calcium carbonate.
Further, the plasticizer is one of epoxy fatty acid methyl ester and diethyl terephthalate.
Further, the antioxidant is antioxidant 168.
Further, the lubricant is one of zinc stearate, zinc citrate and zinc oxalate.
The invention has the beneficial effects that:
the invention provides a high-wear-resistance PP rope, which modifies polypropylene, introduces organic silicon in a bonding manner, and specifically comprises the following steps: the method adopts an emulsion polymerization mode, firstly, propylene monomers are subjected to prepolymerization, then, a modifier is added, and double bonds on the modifier are copolymerized with propylene so as to be embedded into polypropylene to obtain the polypropylene containing organosilicon.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation method of the modified polypropylene comprises the following steps:
s1 preparation of modifier
Adding 1mol of 1-octyne, 1.05mol of bis (trimethylsiloxy) methylsilane, 3mmol of catalyst chloroplatinic acid and 1L of solvent isopropanol into a reaction kettle, introducing nitrogen for 15min, displacing air in the reaction kettle, heating to 80 ℃ while stirring, preserving heat, stirring, reacting for 6h, removing the solvent by rotary evaporation after the reaction is finished, washing with anhydrous ether, and drying to obtain the modifier shown in the formula N; the yield was 92.5%, and the reaction formula was as follows:
s2 preparation of modified polypropylene
Adding 1kg of deionized water, 1.5g of emulsifier polyoxypropylene ether, 1.5g of initiator sodium persulfate and 77g of propylene monomer into a reaction kettle, transferring the reaction kettle into a water bath, carrying out prepolymerization reaction at 55 ℃ for 30min, then removing the reaction kettle from the water bath, naturally cooling to room temperature, sequentially adding 0.4g of emulsifier, 0.4g of initiator, 6g of modifier and 13g of propylene monomer, putting the reaction kettle into the water bath again, carrying out copolymerization reaction at 86 ℃ for 3h, adding 100ml of methanol and 55ml of saturated saline water for demulsification, and obtaining the modified polypropylene after filtering, washing and drying.
Example 2
A high wear-resistant PP rope comprises the following raw materials in parts by weight: 100g of modified polypropylene, 15g of filler, 8g of ethylene propylene diene monomer, 0.6g of plasticizer, 0.4g of antioxidant, 2g of paraffin oil and 0.6g of lubricant;
the filler is calcium carbonate;
the plasticizer is epoxy fatty acid methyl ester;
the antioxidant is antioxidant 168;
the lubricant is zinc stearate.
Example 3
A high wear-resistant PP rope comprises the following raw materials in parts by weight: 120g of modified polypropylene, 17g of filler, 12g of ethylene propylene diene monomer, 1.2g of plasticizer, 0.4g of antioxidant, 3g of paraffin oil and 1g of lubricant;
the filler is calcium carbonate;
the plasticizer is diethyl terephthalate;
the antioxidant is antioxidant 168;
the lubricant is zinc citrate.
Example 4
A high wear-resistant PP rope comprises the following raw materials in parts by weight: 150g of modified polypropylene, 20g of filler, 6g of ethylene propylene diene monomer, 1g of plasticizer, 0.5g of antioxidant, 2g of paraffin oil and 0.5g of lubricant;
the filler is calcium carbonate;
the plasticizer is epoxy fatty acid methyl ester;
the antioxidant is antioxidant 168;
the lubricant is zinc oxalate.
Comparative example 1
The modified polypropylene was replaced with polypropylene, which is the same as in example 4.
Abrasion resistance test of the prepared PP rope
The test method follows the standard of GB/T1040-2006, GB/T3960-1983 and GB/T3960-1983), and the tensile strength before and after the experiment is compared:
| tensile Strength (MPa) | Coefficient of friction | Wear rate (%) | |
| Example 2 | 266 | 0.02 | 0.08 |
| Example 3 | 257 | 0.03 | 0.15 |
| Example 4 | 264 | 0.02 | 0.11 |
| Comparative example 1 | 164 | 0.07 | 0.89 |
As can be seen from the above table, the PP rope prepared by the invention has good wear resistance and tensile property.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (8)
1. The high wear-resistant PP rope is characterized in that: the feed comprises the following raw materials in parts by weight: 100 portions of modified polypropylene, 15 to 20 portions of filler, 6 to 12 portions of ethylene propylene diene monomer, 0.5 to 1.2 portions of plasticizer, 0.3 to 0.5 portion of antioxidant, 1.5 to 3 portions of paraffin oil and 0.5 to 1 portion of lubricant.
2. The high abrasion resistance PP rope according to claim 1, wherein: the preparation method of the modified polypropylene comprises the following steps:
s1 preparation of modifier
Adding 1mol of 1-octyne, 1.05-1.1mol of bis (trimethylsilyloxy) methylsilane, a catalyst and 1L of isopropanol serving as a solvent into a reaction kettle, introducing nitrogen for 10-15min, displacing air in the reaction kettle, heating to 80-85 ℃ while stirring, preserving heat, stirring, reacting for 6-8h, removing the solvent by rotary evaporation after the reaction is finished, washing with anhydrous ether, and drying to obtain the modifier shown in the formula N; the reaction formula is shown as follows:
s2 preparation of modified polypropylene
Adding 1kg of deionized water, 1-2g of emulsifier, 1-1.5g of initiator and 70-80g of propylene monomer into a reaction kettle, transferring the reaction kettle into a water bath kettle, carrying out prepolymerization reaction at 55-60 ℃ for 30-40min, then removing the reaction kettle from the water bath kettle, naturally cooling to room temperature, sequentially adding 0.3-0.5g of emulsifier, 0.4-0.6g of initiator, 5-7g of modifier and 15-20g of propylene monomer, putting the reaction kettle into the water bath kettle again, carrying out copolymerization reaction at 85-90 ℃ for 2-3h, adding 100ml of methanol and 50-60ml of saturated salt water for demulsification, filtering, washing and drying to obtain the modified polypropylene.
3. The high abrasion resistance PP rope according to claim 2, wherein: in step S1, the catalyst is chloroplatinic acid, and the addition amount of the catalyst is 2-4 mmol.
4. The high abrasion resistance PP rope according to claim 2, wherein: in step S2, the emulsifier is polyoxypropylene ether; the initiator is sodium persulfate.
5. The high abrasion resistance PP rope according to claim 1, wherein: the filler is calcium carbonate.
6. The high abrasion resistance PP rope according to claim 1, wherein: the plasticizer is one of epoxy fatty acid methyl ester and diethyl terephthalate.
7. The high abrasion resistance PP rope according to claim 1, wherein: the antioxidant is antioxidant 168.
8. The high abrasion resistance PP rope according to claim 1, wherein: the lubricant is one of zinc stearate, zinc citrate and zinc oxalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333940.8A CN111363254A (en) | 2020-04-24 | 2020-04-24 | High-wear-resistance PP rope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333940.8A CN111363254A (en) | 2020-04-24 | 2020-04-24 | High-wear-resistance PP rope |
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| Publication Number | Publication Date |
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| CN111363254A true CN111363254A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010333940.8A Pending CN111363254A (en) | 2020-04-24 | 2020-04-24 | High-wear-resistance PP rope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429920A (en) * | 2021-07-13 | 2021-09-24 | 安徽国风塑业股份有限公司 | Waterproof and heat-resistant PP hot melt adhesive and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864606A (en) * | 2018-07-18 | 2018-11-23 | 浙江威思康塑胶有限公司 | A kind of low-gravity high abrasion PVC cable material |
| CN109647532A (en) * | 2017-10-11 | 2019-04-19 | 中国科学院大连化学物理研究所 | A kind of application of the platinum orphan's atom of non-olefinic coordination in hydrosilylation |
| CN110541317A (en) * | 2019-07-18 | 2019-12-06 | 安徽嘉明新材料科技有限公司 | anti-aging water surface floating life rope and production device thereof |
-
2020
- 2020-04-24 CN CN202010333940.8A patent/CN111363254A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647532A (en) * | 2017-10-11 | 2019-04-19 | 中国科学院大连化学物理研究所 | A kind of application of the platinum orphan's atom of non-olefinic coordination in hydrosilylation |
| CN108864606A (en) * | 2018-07-18 | 2018-11-23 | 浙江威思康塑胶有限公司 | A kind of low-gravity high abrasion PVC cable material |
| CN110541317A (en) * | 2019-07-18 | 2019-12-06 | 安徽嘉明新材料科技有限公司 | anti-aging water surface floating life rope and production device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 孔萍 等: "《塑料材料》", 31 July 2017, 广东高等教育出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429920A (en) * | 2021-07-13 | 2021-09-24 | 安徽国风塑业股份有限公司 | Waterproof and heat-resistant PP hot melt adhesive and preparation method thereof |
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