CN109651734B - High-strength low-temperature-resistant PVC composite material and preparation method thereof - Google Patents
High-strength low-temperature-resistant PVC composite material and preparation method thereof Download PDFInfo
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- CN109651734B CN109651734B CN201811625311.1A CN201811625311A CN109651734B CN 109651734 B CN109651734 B CN 109651734B CN 201811625311 A CN201811625311 A CN 201811625311A CN 109651734 B CN109651734 B CN 109651734B
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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
- C08L27/00—Compositions 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
- C08L27/02—Compositions 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
- C08L27/04—Compositions 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
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a high-strength low-temperature-resistant PVC composite material, which is characterized in that: the material comprises the following components in parts by weight: 35-50 parts of P3000 resin powder, 30-75 parts of P4000 resin powder, 45-67 parts of plasticizer, 0.9-1.4 parts of calcium-zinc composite stabilizer, 12-25 parts of TPU, 0.2-1.3 parts of lubricant, 0.1-0.3 part of antioxidant, 0.1-0.4 part of anti-ultraviolet agent and 0.4-2 parts of tackifier, and the PVC material prepared by the formula has the advantages of high strength, strong low temperature resistance, environmental protection and environmental protection.
Description
Technical Field
The invention belongs to the technical field of PVC composite materials, and particularly relates to a high-strength low-temperature-resistant PVC composite material.
Background
Polyvinyl chloride (pvc), abbreviated as pvc in english, is an initiator for vinyl chloride monomer in peroxides, azo compounds, etc.; or a polymer polymerized by a free radical polymerization mechanism under the action of light and heat. PVC is very widely used. The product has wide application in building materials, industrial products, daily necessities, floor leathers, floor tiles, artificial leathers, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like.
The existing PVC material mainly comprises the following formula P3000 resin powder, a plasticizer, a calcium-zinc composite stabilizer, a lubricant, an antioxidant and a tackifier, and has low tensile strength and poor low-temperature resistance, so that the service life of a product is short, and therefore, the strength and the impact property are necessarily improved by reasonable raw material proportion and process parameters.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-strength low-temperature-resistant PVC composite material which is high in strength, strong in low-temperature-resistant capability, environment-friendly and environment-friendly.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-strength low-temperature-resistant PVC composite material comprises the following substances in parts by mass: 35-50 parts of P3000 resin powder, 30-75 parts of P4000 resin powder, 45-67 parts of plasticizer, 0.9-1.4 parts of calcium-zinc composite stabilizer, 12-25 parts of TPU, 0.2-1.3 parts of lubricant, 0.1-0.3 part of antioxidant, 0.1-0.4 part of anti-ultraviolet agent and 0.4-2 parts of tackifier.
Further, the plasticizer comprises 34-45 parts of dioctyl terephthalate, 8-13 parts of dioctyl adipate and 3-9 parts of epoxidized soybean oil.
Further, the composition comprises the following substances in parts by weight: 50 parts of P3000 resin powder, 35 parts of P4000 resin powder, 50 parts of plasticizer, 0.9 part of calcium-zinc composite stabilizer, 25 parts of TPU, 0.4 part of lubricant, 0.4 part of antioxidant, 0.3 part of anti-ultraviolet agent and 1.5 parts of tackifier.
Further, the plasticizer comprises 35 parts of dioctyl terephthalate, 12 parts of dioctyl adipate and 3 parts of epoxidized soybean oil.
Further, the lubricant comprises polyethylene wax.
Further, the method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 490-550 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 400-450 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 60-70 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 90-115 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to 125-145 ℃ and mixing at the rotation speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 145-185 ℃, and the vacuum pressure of-0.06-0.1 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
After adopting the structure, compared with the prior art, the invention has the advantages that:
1. the P3000 resin powder and the P4000 resin powder are coordinated and cooperated, so that the strength of the composite material can be improved.
2. The dioctyl terephthalate, the dioctyl adipate and the epoxidized soybean oil are cooperatively used, so that the surface precipitation of a product in the preparation process can be avoided, and the low-temperature resistance of the product is improved.
3. The calcium-zinc composite stabilizer provided by the invention is cooperated with other components, so that the plasticizing efficiency and the plasticizing quality are improved, the kneading is more uniform, the odor pollution can be reduced, and the environment is protected.
4. The tackifier can cooperate with other components to improve plasticizing efficiency, and simultaneously improve the peel resistance and tear resistance of the surface layer of the product, thereby improving the strength of the product.
Detailed Description
The following examples are given by way of illustration of the preferred embodiments of the present invention, and are not intended to limit the scope of the invention.
Example 1, comprising the following mass parts of materials: 35 parts of P3000 resin powder, 70 parts of P4000 resin powder, 43 parts of dioctyl terephthalate, 8 parts of dioctyl adipate, 9 parts of epoxidized soybean oil, 1.4 parts of calcium-zinc composite stabilizer, 14 parts of TPU, 1.2 parts of lubricant, 0.15 part of antioxidant, 0.13 part of anti-ultraviolet agent and 0.8 part of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 490-498 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 400-405 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 60 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 90 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to 125-130 ℃ and mixing at the rotating speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 145 ℃, and the vacuum pressure of-0.06 to-0.08 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Example 2, comprising the following substances in parts by mass: 38 parts of P3000 resin powder, 60 parts of P4000 resin powder, 39 parts of dioctyl terephthalate, 9 parts of dioctyl adipate, 7 parts of epoxidized soybean oil, 1.2 parts of calcium-zinc composite stabilizer, 18 parts of TPU, 1 part of lubricant, 0.2 part of antioxidant, 0.15 part of uvioresistant agent and 1 part of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 500-508 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 421-428 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 66 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 100 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to 125-129 ℃ and mixing at the rotating speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 152-158 ℃, and the vacuum pressure of-0.07-0.08 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Example 3, comprising the following mass parts of materials: 41 parts of P3000 resin powder, 55 parts of P4000 resin powder, 39 parts of dioctyl terephthalate, 10 parts of dioctyl adipate, 5 parts of epoxidized soybean oil, 1 part of calcium-zinc composite stabilizer, 20 parts of TPU, 0.8 part of lubricant, 0.2 part of antioxidant, 0.15 part of anti-ultraviolet agent and 1.1 part of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 530-536 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 420-425 r/min by using the mixer;
c, when the internal temperature of the mixer rises to 68 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 103 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to be 138-143 ℃ and mixing at the rotation speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 161-167 ℃, and the vacuum pressure of-0.07-0.08 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Example 4, comprising the following mass parts of materials: 45 parts of P3000 resin powder, 45 parts of P4000 resin powder, 37 parts of dioctyl terephthalate, 11 parts of dioctyl adipate, 4 parts of epoxidized soybean oil, 1 part of calcium-zinc composite stabilizer, 24 parts of TPU, 0.6 part of lubricant, 0.2 part of antioxidant, 0.25 part of anti-ultraviolet agent and 1.1 part of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 485-492 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the anti-ultraviolet agent into the mixer, and then mixing at the rotating speed of 427-431 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 66 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 103 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to be 137-142 ℃ and mixing at the rotating speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 178-185 ℃, and the vacuum pressure of-0.06-0.07 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Example 5, comprising the following mass parts of materials: 50 parts of P3000 resin powder, 35 parts of P4000 resin powder, 35 parts of dioctyl terephthalate, 12 parts of dioctyl adipate, 3 parts of epoxidized soybean oil, 0.9 part of calcium-zinc composite stabilizer, 25 parts of TPU, 0.4 part of lubricant, 0.3 part of antioxidant, 0.4 part of anti-ultraviolet agent and 1.5 parts of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at high speed at the rotating speed of 525-530 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 433-440 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 66 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 100 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to be 132-139 ℃ and mixing at the rotating speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 165-171 ℃, and the vacuum pressure of-0.06-0.1 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Example 6, comprising the following mass parts of materials: 50 parts of P3000 resin powder, 30 parts of P4000 resin powder, 34 parts of dioctyl terephthalate, 13 parts of dioctyl adipate, 3 parts of epoxidized soybean oil, 0.9 part of calcium-zinc composite stabilizer, 25 parts of TPU, 0.2 part of lubricant, 0.3 part of antioxidant, 0.4 part of anti-ultraviolet agent and 1.6 parts of tackifier.
The method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 545-550 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 443-450 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 70 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 110-115 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to 139-145 ℃ and mixing at the rotation speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 178-185 ℃, and the vacuum pressure of-0.08 to-0.1 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles; the obtained particles were cooled by passing through an air hopper and a vibrating screen.
Comparison 1: the feed additive comprises the following substances in parts by mass: 100 parts of P3000 resin powder, 45 parts of dioctyl terephthalate, 8 parts of dioctyl adipate, 3 parts of epoxidized soybean oil, 0.9 part of calcium-zinc composite stabilizer, 0.2 part of lubricant, 0.1 part of antioxidant, 0.1 part of anti-ultraviolet agent and 0.6 part of tackifier.
The results of the tests on the tensile strength and the elongation at break of the PVC composite material produced according to the formulation of examples 1-6 and the conventional PVC composite material by using an electronic tensile testing machine according to GB/T8804-2003 and the test results of the tests on the low temperature resistance by using a temperature testing machine according to GB/T5470-2008 are shown in Table 1,
table 1:
| tensile Strength (MPa) | Elongation at Break (%) | Low temperature resistance (. degree. C.) | |
| Example 1 | ≥24 | ≥450 | ≤-36 |
| Example 2 | ≥24 | ≥430 | ≤-35 |
| Example 3 | ≥26 | ≥430 | ≤-36 |
| Example 4 | ≥27 | ≥425 | ≤-38 |
| Example 5 | ≥25 | ≥445 | ≤-44 |
| Example 6 | ≥25 | ≥465 | ≤-40 |
| Comparative example 1 | ≤22.5 | ≤400 | ≥-30 |
Comparing examples 1-6 with comparative example 1, it can be seen that the PVC composite material prepared according to the formulation of examples 1-6 has higher tensile strength and elongation at break and can be more suitable for a wider low-temperature environment.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (4)
1. The utility model provides a low temperature resistant PVC combined material of high strength which characterized in that: the feed additive comprises the following substances in parts by mass: 35-50 parts of P3000 resin powder, 30-75 parts of P4000 resin powder, 45-67 parts of plasticizer, 0.9-1.4 parts of calcium-zinc composite stabilizer, 12-25 parts of TPU, 0.2-1.3 parts of lubricant, 0.1-0.3 part of antioxidant, 0.1-0.4 part of anti-ultraviolet agent and 0.4-2 parts of tackifier; the plasticizer comprises 34-45 parts of dioctyl terephthalate, 8-13 parts of dioctyl adipate and 3-9 parts of epoxidized soybean oil.
2. The high strength low temperature resistant PVC composite according to claim 1, wherein: the material comprises the following components in parts by weight: 50 parts of P3000 resin powder, 35 parts of P4000 resin powder, 50 parts of plasticizer, 0.9 part of calcium-zinc composite stabilizer, 25 parts of TPU, 0.4 part of lubricant, 0.3 part of antioxidant, 0.4 part of anti-ultraviolet agent and 1.5 parts of tackifier.
3. The high strength low temperature resistant PVC composite according to claim 2, wherein: the plasticizer comprises 35 parts of dioctyl terephthalate, 12 parts of dioctyl adipate and 3 parts of epoxidized soybean oil.
4. A method for preparing a high strength low temperature resistant PVC composite according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
step a, putting P3000 resin powder, P4000 resin powder, dioctyl terephthalate and epoxy soybean oil into a mixer, and mixing at a high speed of 490-550 r/min by using the mixer;
b, adjusting the internal temperature of the mixer to 45 ℃, placing the calcium-zinc composite stabilizer, the lubricant, the antioxidant and the uvioresistant agent into the mixer, and then mixing at the rotating speed of 400-450 r/min by using the mixer;
c, when the internal temperature of the mixer is raised to 60-70 ℃, putting dioctyl adipate into the mixer for mixing;
d, when the internal temperature of the mixer rises to 90-115 ℃, putting the TPU into the mixer, and adjusting the internal temperature of the mixer to 125-145 ℃ and mixing at the rotation speed of 550 r/min;
e, sending the material out through a discharge door of the mixer and sending the material to a feed inlet of a double-screw extruder;
step f, adjusting the internal temperature of the double-screw extruder to 145-185 ℃, and the vacuum pressure of-0.06-0.1 MPa, starting a feeder, and feeding the materials into the double-screw extruder; kneading the double screws to prepare particles;
the obtained particles were cooled by passing through an air hopper and a vibrating screen.
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Denomination of invention: The invention relates to a PVC composite material with high strength and low temperature resistance and a preparation method thereof Effective date of registration: 20210916 Granted publication date: 20210219 Pledgee: Zhejiang Tailong commercial bank Taizhou branch of Limited by Share Ltd. Pledgor: TAIZHOU TIAN DA YUAN TECHNOLOGY Co.,Ltd. Registration number: Y2021980009394 |