CN112898704A - High-performance modified polyvinyl chloride - Google Patents

High-performance modified polyvinyl chloride Download PDF

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Publication number
CN112898704A
CN112898704A CN202110390457.8A CN202110390457A CN112898704A CN 112898704 A CN112898704 A CN 112898704A CN 202110390457 A CN202110390457 A CN 202110390457A CN 112898704 A CN112898704 A CN 112898704A
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polyvinyl chloride
calcium polyphosphate
nitrile rubber
antioxidant
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姜丽丽
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/325Calcium, strontium or barium phosphate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/14Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16Fibres; Fibrils

Abstract

The invention discloses high-performance modified polyvinyl chloride, which comprises the following raw materials: PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant. According to the high-performance modified polyvinyl chloride, the high-performance modified polyvinyl chloride is added with the partially crosslinked nitrile rubber, and the compound filler and the modified calcium polyphosphate are added, so that various mechanical properties of the polyvinyl chloride are further improved in a balanced manner.

Description

High-performance modified polyvinyl chloride
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of polymers, and particularly relates to high-performance modified polyvinyl chloride.
[ background of the invention ]
Polyvinyl chloride is one of the earliest plastic varieties for realizing industrialization in the world, is a general resin with excellent performance and low price, has the advantages of excellent flame retardant property, corrosion resistance, wear resistance, small friction coefficient, low thermal conductivity, good sealing property, dust prevention, sound insulation, shock resistance, weather resistance and the like, and is widely applied to the fields of buildings, light industry, agriculture, packaging, daily use and the like. However, the polyvinyl chloride molecules contain a large amount of C-Cl bonds, and a large acting force exists among the molecules, so the polyvinyl chloride molecules are relatively hard, show a certain brittleness to the outside, and have poor impact strength.
Therefore, a high-performance modified polyvinyl chloride and a preparation method thereof are urgently needed.
[ summary of the invention ]
The invention provides high-performance modified polyvinyl chloride and a preparation method thereof, and the prepared product has a polyvinyl chloride material with excellent mechanical property by optimizing components and dosage.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant; the gel mass percentage content of the partially crosslinked nitrile rubber is 40-60%; the compound filler is formed by mixing hollow structure fibers and hydroxyl silicone oil, and the modified calcium polyphosphate is calcium polyphosphate subjected to surface modification by a silane coupling agent; the mass ratio of the PVC to the partially crosslinked nitrile rubber is 100: 15-25.
Further, the high-performance modified polyvinyl chloride comprises the following raw materials in parts by mass: 100 parts of PVC, 15-25 parts of partially crosslinked nitrile rubber, 5-10 parts of compound filler, 5-10 parts of modified calcium polyphosphate, 4-6 parts of plasticizer, 1-3 parts of antioxidant and 2-4 parts of lubricant.
Further, the compound filling agent is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 5-15min, and filtering.
Further, the hollow structural fiber is nylon 66 chopped fiber with the hollowness of 10-20%.
Further, the plasticizer is DOP, DOS, DIDP, liquid polyester type.
Further, the compounding mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 5-10.
Further, the antioxidant is antioxidant 1010 or antioxidant DLTP.
Further, the lubricant is at least one of calcium stearate, paraffin wax and polyethylene wax.
The preparation method of the high-performance modified polyvinyl chloride is characterized by comprising the following steps:
(1) weighing PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant according to the formula, and putting the materials into a mixer to be stirred for 1-3 minutes to obtain a mixed raw material;
(2) putting the mixed raw materials in the step 1 into a double-screw extruder for reaction, allowing the materials to stay in a machine barrel for 1-2min to obtain a reaction product,
(3) and cutting the reaction product into particles and drying to obtain a finished product.
Further, the temperatures of the zones of the twin-screw extruder are as follows: the first zone is 180-class at 200 ℃, the second zone is 200-class at 220 ℃, the third zone is 200-class at 220 ℃, the fourth zone is 200-class at 220 ℃, the fifth zone is 200-class at 220 ℃, the sixth zone is 200-class at 220 ℃, the seventh zone is 200-class at 220 ℃, the eighth zone is 200-class at 220 ℃, the ninth zone is 200-class at 220 ℃, and the head is 200-class at 210 ℃.
The invention has the following beneficial effects:
1) the invention takes PVC as a substrate, and adds the partially crosslinked nitrile rubber with certain gel content, thereby effectively improving the impact resistance of the polyvinyl chloride and balancing and improving other properties, wherein the impact resistance is reduced due to excessive gel content, and other mechanical properties are reduced due to excessive gel content.
2) The invention prepares the compound filling agent, and takes the modified calcium polyphosphate as the filling main body. The compound filler is a compound of hollow fibers and hydroxyl silicone oil, the impact resistance and other mechanical properties of the resin are greatly improved by adding the hollow fibers, and the hollowness of the hollow fibers is 10-20%. Too high hollowness will result in mechanical properties decreasing and easy to bubble, and too low hollowness will result in failure to achieve a large improvement in impact resistance. Through the pre-compounding of the hollow fiber and the hydroxyl silicone oil, the air reserved in the hollow fiber can be effectively removed, the bubbling phenomenon is prevented, and the dispersion can be promoted. Compared with other inorganic fillers, the modified calcium polyphosphate has the advantage that the overall rigidity of the polyvinyl chloride is greatly improved by adding the inorganic polymer with long chain. The compound filling agent and the modified calcium polyphosphate are added simultaneously, so that the polyvinyl chloride composite material has the characteristics of improving the mechanical properties of all polyvinyl chloride in a balanced manner and overcoming the characteristic that the traditional filling agent brings partial performance deterioration.
According to the high-performance modified polyvinyl chloride, the high-performance modified polyvinyl chloride is added with the partially crosslinked nitrile rubber, and the compound filler and the modified calcium polyphosphate are added, so that various mechanical properties of the polyvinyl chloride are further improved in a balanced manner.
[ detailed description ] embodiments
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
The following is a more specific example.
The high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: 100 parts of PVC, 15-25 parts of partially crosslinked nitrile rubber, 5-10 parts of compound filler, 5-10 parts of modified calcium polyphosphate, 4-6 parts of plasticizer, 1-3 parts of antioxidant and 2-4 parts of lubricant.
The gel mass percentage content of the partially crosslinked nitrile rubber is 40-60%. The compound filler is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 5-15min and filtering. The hollow structure fiber is nylon 66 chopped fiber with the hollowness of 10-20%. The plasticizer is DOP. The compound mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 5-10. The antioxidant is antioxidant 1010. The lubricant is polyethylene wax.
The preparation method of the high-performance modified polyvinyl chloride is characterized by comprising the following steps:
(1) weighing PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant according to the formula, and putting the materials into a mixer to be stirred for 1-3 minutes to obtain a mixed raw material;
(2) putting the mixed raw materials obtained in the step 1 into a double-screw extruder for reaction, wherein the materials stay in a machine barrel for 1-2min to obtain a reaction product, and the temperature of each zone of the double-screw extruder is as follows: the first zone is 180-class at 200 ℃, the second zone is 200-class at 220 ℃, the third zone is 200-class at 220 ℃, the fourth zone is 200-class at 220 ℃, the fifth zone is 200-class at 220 ℃, the sixth zone is 200-class at 220 ℃, the seventh zone is 200-class at 220 ℃, the eighth zone is 200-class at 220 ℃, the ninth zone is 200-class at 220 ℃, and the head is 200-class at 210 ℃.
(3) And cutting the reaction product into particles and drying to obtain a finished product.
Example 1
The high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: 100 parts of PVC, 20 parts of partially crosslinked nitrile rubber, 7.5 parts of compound filler, 7.5 parts of modified calcium polyphosphate, 5 parts of plasticizer, 2 parts of antioxidant and 3 parts of lubricant.
The gel mass percentage content of the partially crosslinked nitrile rubber is 50%. The compound filler is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 10min and filtering. The hollow structure fiber is nylon 66 chopped fiber with the hollowness of 15%. The plasticizer is DOP. The compounding mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 7.5. The antioxidant is antioxidant 1010. The lubricant is polyethylene wax.
The preparation method of the high-performance modified polyvinyl chloride is characterized by comprising the following steps:
(1) weighing PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant according to the formula, and putting the materials into a mixer to be stirred for 2 minutes to obtain a mixed raw material;
(2) putting the mixed raw materials obtained in the step 1 into a double-screw extruder for reaction, wherein the materials stay in a machine barrel for 1-2min to obtain a reaction product, and the temperature of each zone of the double-screw extruder is as follows: the first zone is 180-class at 200 ℃, the second zone is 200-class at 220 ℃, the third zone is 200-class at 220 ℃, the fourth zone is 200-class at 220 ℃, the fifth zone is 200-class at 220 ℃, the sixth zone is 200-class at 220 ℃, the seventh zone is 200-class at 220 ℃, the eighth zone is 200-class at 220 ℃, the ninth zone is 200-class at 220 ℃, and the head is 200-class at 210 ℃.
(3) And cutting the reaction product into particles and drying to obtain a finished product.
Example 2
The high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: 100 parts of PVC, 25 parts of partially crosslinked nitrile rubber, 5 parts of compound filler, 10 parts of modified calcium polyphosphate, 4 parts of plasticizer, 3 parts of antioxidant and 2 parts of lubricant.
The gel mass percentage content of the partially crosslinked nitrile rubber is 60%. The compound filler is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 5min and filtering. The hollow structure fiber is nylon 66 chopped fiber with the hollowness of 20%. The plasticizer is DOP. The compounding mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 5. The antioxidant is antioxidant 1010. The lubricant is polyethylene wax.
The preparation method is the same as that of example 1.
Example 3
The high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: 100 parts of PVC, 15 parts of partially crosslinked nitrile rubber, 10 parts of compound filler, 5 parts of modified calcium polyphosphate, 6 parts of plasticizer, 1 part of antioxidant and 4 parts of lubricant.
The gel mass percentage content of the partially crosslinked nitrile rubber is 40%. The compound filler is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 15min and filtering. The hollow structure fiber is nylon 66 chopped fiber with the hollowness of 10%. The plasticizer is DOP. The compounding mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 10. The antioxidant is antioxidant 1010. The lubricant is polyethylene wax.
The preparation method is the same as that of example 1.
Comparative example 1
The procedure was essentially the same as in example 1, except that the partially crosslinked nitrile rubber was absent from the raw materials used to prepare the high performance modified polyvinyl chloride.
Comparative example 2
The procedure was essentially the same as in example 1, except that the gel content of the partially crosslinked nitrile rubber in the starting material for the preparation of the high-performance modified polyvinyl chloride was 20%.
Comparative example 3
The procedure was essentially the same as in example 1, except that the gel content of the partially crosslinked nitrile rubber in the starting material for the preparation of the high-performance modified polyvinyl chloride was 80%.
Comparative example 4
The preparation process is basically the same as that of example 1, except that sulfur in the raw materials for preparing the high-performance modified polyvinyl chloride lacks compound filler, modified calcium polyphosphate.
Comparative example 5
The process was essentially the same as that used in example 1, except that the raw materials used to prepare the high performance modified polyvinyl chloride lacked the built-in filler.
Comparative example 6
The preparation process was substantially the same as that of example 1, except that modified calcium polyphosphate was absent from the raw materials for preparing the high-performance modified polyvinyl chloride.
Comparative example 7
The preparation process is basically the same as that of example 1, except that the compound filler in the raw materials for preparing the high-performance modified polyvinyl chloride is directly replaced by the hollow fiber.
Comparative example 8
The preparation process is basically the same as that of example 1, except that the compound filler in the raw materials for preparing the high-performance modified polyvinyl chloride is directly replaced by the common fiber.
Tensile strength was measured according to ASTM D-638, and flexural strength was measured according to ASTM D-790. Rockwell hardness was measured according to ISO 2039-2. The impact properties were tested at 25 ℃.
Figure DEST_PATH_IMAGE002
From the above table, it can be seen that: as can be seen from the data of examples 1-3 and comparative examples 1-8, the high-performance modified polyvinyl chloride further improves various mechanical properties of the polyvinyl chloride in a balanced manner by adding part of cross-linked nitrile rubber and adding compound filler to modify calcium polyphosphate.
The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.

Claims (1)

1. The high-performance modified polyvinyl chloride is characterized by comprising the following raw materials in parts by mass: 100 parts of PVC, 20 parts of partially crosslinked nitrile rubber, 7.5 parts of compound filler, 7.5 parts of modified calcium polyphosphate, 5 parts of plasticizer, 2 parts of antioxidant and 3 parts of lubricant;
the gel mass percentage content of the partially crosslinked nitrile rubber is 50%; the compound filler is obtained by immersing the hollow structure fiber into hydroxyl silicone oil, ultrasonically vibrating for 10min and filtering; the hollow structure fiber is nylon 66 chopped fiber with the hollowness of 15 percent; the plasticizer is DOP; the compounding mass ratio of the calcium polyphosphate to the silane coupling agent in the modified calcium polyphosphate is 100: 7.5; the antioxidant is 1010; the lubricant is polyethylene wax;
the preparation method of the high-performance modified polyvinyl chloride comprises the following steps:
(1) weighing PVC, partially crosslinked nitrile rubber, a compound filler, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant according to the formula, and putting the materials into a mixer to be stirred for 2 minutes to obtain a mixed raw material;
(2) putting the mixed raw materials obtained in the step 1 into a double-screw extruder for reaction, wherein the materials stay in a machine barrel for 1-2min to obtain a reaction product, and the temperature of each zone of the double-screw extruder is as follows: the first zone is 180-;
(3) and cutting the reaction product into particles and drying to obtain a finished product.
CN202110390457.8A 2018-04-29 2018-04-29 High-performance modified polyvinyl chloride Pending CN112898704A (en)

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Citations (3)

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JPH0531342A (en) * 1991-07-31 1993-02-09 Nippon Medical Supply Corp Hollow fiber membrane improved in dispersibility and its production
CN103087438A (en) * 2011-11-02 2013-05-08 中国石油化工股份有限公司 Impact-resistant polyvinyl chloride composition and preparation method thereof

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Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH0493233A (en) * 1990-08-08 1992-03-26 Mitsubishi Kasei Vinyl Co Improvement of permanent compressive strain of polyvinyl chloride-based resin molded article
JPH0531342A (en) * 1991-07-31 1993-02-09 Nippon Medical Supply Corp Hollow fiber membrane improved in dispersibility and its production
CN103087438A (en) * 2011-11-02 2013-05-08 中国石油化工股份有限公司 Impact-resistant polyvinyl chloride composition and preparation method thereof

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Application publication date: 20210604