CN113956589A - Composite short fiber reinforced PVC resin tile and preparation method thereof - Google Patents

Composite short fiber reinforced PVC resin tile and preparation method thereof Download PDF

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CN113956589A
CN113956589A CN202111520502.3A CN202111520502A CN113956589A CN 113956589 A CN113956589 A CN 113956589A CN 202111520502 A CN202111520502 A CN 202111520502A CN 113956589 A CN113956589 A CN 113956589A
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pvc resin
short fiber
resin
percent
pvc
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CN113956589B (en
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雷文君
寇晓军
赖学珍
漆昌顺
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Sichuan New Sanya Building Material Technology Co ltd
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Sichuan New Sanya Building Material Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (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 composite short fiber reinforced PVC resin tile which is characterized by comprising the following components: PVC resin, ASA toning resin, short fiber and the like. The invention also discloses a preparation method of the composite short fiber reinforced PVC resin tile, which comprises the following steps: step 1: mixing PVC resin, a lubricating assistant, a heat stabilizer, superfine calcium carbonate and an antioxidant by a high-speed mixer to obtain a PVC resin mixture, and cooking the PVC resin mixture by the high-speed mixer. According to the invention, after the compatilizer and the short fibers are subjected to chemical coupling, a net structure is formed in the PVC phase, and the whiskers in the short fibers can change the aggregation state structure of the PVC material, so that the compatilizer of the PVC resin tile is matched with the short fibers, and the thermal deformation temperature, the impact property, the tensile strength, the flexural modulus, the flexural strength and other properties of the material can be effectively improved.

Description

Composite short fiber reinforced PVC resin tile and preparation method thereof
Technical Field
The invention belongs to the field of PVC modified materials used for synthetic resin tiles, and relates to a composite short fiber reinforced PVC resin tile and a preparation method thereof.
Background
At present, among light building materials, corrugated synthetic resin tiles are favored by the building industry because of the advantages of lasting color, light weight, self-water resistance, toughness, heat preservation and insulation, sound insulation, corrosion resistance, wind and shock resistance, hail resistance, pollution resistance, environmental protection, fire prevention, insulation, convenient installation, attractive appearance, strong stereoscopic impression and the like. However, the existing corrugated synthetic resin tiles are poor in strength, impact resistance and heat resistance, and are easy to deform in use, so that in order to improve the strength, impact resistance and heat resistance of the corrugated synthetic resin tiles, it is urgent to provide a corrugated resin tile which not only has high strength, high impact resistance and strong heat resistance, but also is low in production cost and easy to process.
Disclosure of Invention
The invention aims to solve the problems and provides a composite short fiber reinforced PVC resin tile which has high strength, high impact resistance and strong heat resistance, is low in production cost and easy to process, and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
a composite short fiber reinforced PVC resin tile comprises the following components: PVC resin, ASA toning resin, short fiber, lubricating additive, compatilizer, antioxidant, heat stabilizer and superfine calcium carbonate, wherein the mass percentages of the components are as follows:
the mass percent of the PVC resin is 40-60%;
the mass percent of the ASA toning resin is 3-5%;
the mass percentage of the short fiber is 10-30%;
the mass percent of the compatilizer is 3-10%;
the mass percentage of the lubricating additive is 2-5%;
the mass percent of the antioxidant is 0.15-0.3%;
the mass percent of the superfine calcium carbonate is 18-30 percent;
the mass percentage of the heat stabilizer is 3-8%.
As a further scheme of the invention, after the short fiber and the compatilizer are subjected to chemical coupling action, a net structure is formed in a PVC phase, wherein the short fiber is one or a mixture of more of superfine basalt short fiber, polyester fiber and whisker short fiber; the diameters of the superfine basalt short fibers, the polyester fibers and the polyester fibers are 1-8 mu m, and the lengths of the superfine basalt short fibers, the polyester fibers and the polyester fibers are 1-10 mm; the whisker short fiber is CaCO with the diameter of 5-20nm and the length-diameter ratio of 15-1003Whiskers, CaSO4One or more of whiskers, silicon calcium magnesium whiskers, magnesium salt whiskers and wollastonite.
As a further scheme of the invention, the ASA toning resin is an impact-resistant modified resin polymerized by a terpolymer of styrene, acrylonitrile and acrylic rubber, and the ASA toning resin can be in different colors.
As a further scheme of the invention, the compatilizer is one or a mixture of more of EVA-g-MAH, ethylene-acrylate copolymer, ethylene-methacrylate copolymer and SEBS-g-MAH.
As a further scheme of the invention, the lubricating auxiliary agent is one or a mixture of zinc stearate, calcium stearate, EBS and PE wax.
As a further scheme of the invention, the antioxidant is a mixture of one or more of antioxidant 1010, antioxidant 168 and organic silicone oil.
In a further embodiment of the present invention, the ultrafine calcium carbonate is heavy or light calcium carbonate with a mesh size of 1000 meshes or more.
As a further scheme of the invention, the heat stabilizer is one or a mixture of more of rare earth calcium zinc composite stabilizer, epoxy compound, phosphite ester, thioester, thioether, hindered phenol, polyalcohol or ester thereof and beta-diketone compound.
In a further embodiment of the present invention, the PVC resin is a general-purpose PVC resin produced by a suspension polymerization method.
A preparation method of composite short fiber reinforced PVC resin tiles comprises the following steps:
step 1: mixing PVC resin, a lubricating assistant, a heat stabilizer, superfine calcium carbonate and an antioxidant by a high-speed mixer to obtain a PVC resin mixture, and cooking the PVC resin mixture by the high-speed mixer;
step 2: introducing the cooked PVC resin mixture obtained in the step 1 into a horizontal mixer, adding a compatilizer and short fibers, and uniformly mixing to obtain a PVC resin short fiber mixture;
and step 3: introducing the obtained PVC resin fiber mixture into a conical double-screw extruder, heating the conical double-screw extruder to 160-;
and 4, step 4: and attaching the ASA toning resin to the outer surface of the reinforced PVC layer through a single-screw extruder, extruding the ASA toning resin and the reinforced PVC layer through a thermoforming extruder, and extruding to obtain the PVC resin sheet.
And 5: and carrying out compression molding on the obtained PVC resin sheet to finally obtain the PVC resin tile.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, after the compatilizer and the short fibers are subjected to chemical coupling action, a net structure is formed in a PVC phase, and meanwhile, the whiskers in the short fibers can change the aggregation state structure of a PVC material, so that the compatilizer of the PVC resin tile is matched with the short fibers, and various properties of the material, such as dimensional stability, thermal deformation temperature, impact property, tensile strength, bending modulus, bending strength and the like, can be effectively improved, and the problems of poor strength, impact resistance and heat resistance of the existing PVC resin tile are well solved.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
The invention relates to a composite short fiber reinforced PVC resin tile, which comprises the following components: PVC resin, ASA toning resin, short fiber, lubricating additive, compatilizer, antioxidant, heat stabilizer and superfine calcium carbonate.
Wherein the mass percentages of the components are as follows:
the mass percent of the PVC resin is 40 percent, and the PVC resin is general PVC resin of suspension polymerization.
The mass percent of the ASA toning resin is 5 percent, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 20 percent. The short fiber is a mixture of superfine basalt short fiber and whisker short fiber. Wherein the mass percent of the superfine basalt short fiber is 13 percent, and the mass percent of the whisker short fiber is 7 percent. The diameter of the superfine basalt short fiber is 6 μm, and the length is 2 mm. The short fiber of the crystal whisker is the crystal whisker of silicon, calcium and magnesium with the diameter of 5nm and the length-diameter ratio of 15.
The mass percent of the compatilizer is 5%, and the compatilizer is a mixture of EVA-g-MAH and ethylene-acrylate copolymer. Wherein, the mass percent of the EVA-g-MAH is 4 percent, and the mass percent of the alkene-acrylate copolymer is 1 percent.
The lubricating aid accounts for 4.7 percent by mass, and is a mixture of zinc stearate, calcium stearate and PE wax. Wherein, the mass percent of zinc stearate is 1%, the mass percent of calcium stearate is 1.7%, and the mass percent of PE wax is 2%.
The antioxidant is 0.3% by mass and is a mixture of antioxidant 1010 and antioxidant 168, wherein the antioxidant 1010 is 0.1% by mass and the antioxidant 168 is 0.2% by mass.
The superfine calcium carbonate accounts for 20 percent of the mass percent, and is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The heat stabilizer accounts for 5 percent by mass, and the heat stabilizer is a rare earth calcium-zinc composite stabilizer.
In specific implementation, the compatilizer and the short fibers form a net structure in the PVC phase after chemical coupling, and meanwhile, the whiskers in the short fibers can also change the aggregation state structure of the PVC material. By matching the compatilizer with the short fibers, the dimensional stability, the heat distortion temperature, the impact property, the tensile strength, the flexural modulus, the flexural strength and other properties of the material can be effectively improved.
Further, the preparation method of the composite short fiber reinforced PVC resin tile comprises the following steps:
step 1: mixing PVC resin, a lubricating assistant, a heat stabilizer, superfine calcium carbonate and an antioxidant by a high-speed mixer to obtain a PVC resin mixture, and cooking the PVC resin mixture by the high-speed mixer;
step 2: introducing the cooked PVC resin mixture obtained in the step 1 into a horizontal mixer, adding a compatilizer and short fibers, and uniformly mixing to obtain a PVC resin short fiber mixture;
and step 3: introducing the obtained PVC resin fiber mixture into a conical double-screw extruder, heating the conical double-screw extruder to 160-;
and 4, step 4: and attaching the ASA toning resin to the outer surface of the reinforced PVC layer through a single-screw extruder, extruding the ASA toning resin and the reinforced PVC layer through a thermoforming extruder, and extruding to obtain the PVC resin sheet. Specifically, the extrusion port of the single-screw extruder is arranged in front of the extrusion port of the conical double-screw extruder, when the PVC layer is added for extrusion, the single-screw extruder simultaneously extrudes ASA toning resin to enable the ASA toning resin to be uniformly attached to the outer surface of the reinforced PVC layer, at the moment, the ASA toning resin and the reinforced PVC layer attached to the outer surface of the reinforced PVC layer are extruded through a preset thermal forming extruder, so that the ASA toning resin and the reinforced PVC layer are integrated, and the ASA toning resin is used as a protective layer of the PVC layer.
And (3) before a discharge die orifice of the conical double-screw extruder, connecting the ASA toning resin to the discharge die orifice of the conical double-screw extruder through the single-screw extruder, extruding and attaching the ASA toning resin to the outer surface of the reinforced PVC layer, and extruding to obtain the PVC resin sheet. Wherein the ASA toning resin is used as a protective layer of the PVC layer.
And 5: and carrying out compression molding on the obtained PVC resin sheet to finally obtain the PVC resin tile.
In specific implementation, the high-speed mixer, the horizontal mixer, the conical twin-screw extruder and the single-screw extruder in this embodiment are conventional devices in the prior art, and therefore, specific structures of the high-speed mixer, the horizontal mixer, the conical twin-screw extruder and the single-screw extruder are not described in detail in this specification.
Example 2
This example is basically the same as example 1, except for the following points:
the mass percent of the PVC resin is 48 percent, and the PVC resin is general PVC resin of suspension polymerization method.
The mass percent of the ASA toning resin is 3.5%, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 17%. The short fiber is a mixture of polyester fiber and whisker short fiber. Wherein the mass percent of the polyester fiber is 10 percent, and the mass percent of the whisker short fiber is 7 percent. The polyester fiber has a diameter of 6 μm and a length of 2 mm. The short whisker fiber is CaSO with the diameter of 9nm and the length-diameter ratio of 554Whiskers and CaCO3A mixture of whiskers.
The mass percent of the compatilizer is 4%, and the compatilizer is a mixture of EVA-g-MAH and ethylene-methacrylate. Wherein, the mass percent of the EVA-g-MAH is 3 percent, and the mass percent of the alkene-acrylate copolymer is 1 percent.
The lubricating additive accounts for 3.5 percent by mass, and is a mixture of zinc stearate, EBS and PE wax. Wherein, the mass percent of zinc stearate is 0.5%, the mass percent of calcium stearate is 1.3%, and the mass percent of PE wax is 1.7%.
The antioxidant is 0.25 percent by mass and is a mixture of antioxidant 1010 and organic silicon oil, wherein the antioxidant 1010 is 0.1 percent by mass, and the organic silicon oil is 0.15 percent by mass.
The superfine calcium carbonate accounts for 19 percent by mass, and is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The mass percentage of the heat stabilizer is 4.75 percent, and the heat stabilizer is a beta-diketone compound.
The preparation method of the composite short fiber reinforced PVC resin tile of this example is the same as the preparation method of the composite short fiber reinforced PVC resin tile of example 1.
Example 3
This example is basically the same as example 1, except for the following points:
the mass percent of the PVC resin is 41 percent, and the PVC resin is general PVC resin of suspension polymerization method.
The mass percent of the ASA toning resin is 5 percent, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 22 percent. The short fiber is whisker short fiber. Wherein the whisker short fiber is CaCO with diameter of 13nm and length-diameter ratio of 903Whiskers and CaSO4Mixtures of whiskers, wollastonite, CaCO3The mass percent of the crystal whisker is 8 percent, and the crystal whisker is CaSO4The mass percent of the crystal whisker is 9 percent, and the mass percent of the wollastonite is 7 percent.
The mass percent of the compatilizer is 3%, and the compatilizer is a mixture of EVA-g-MAH, ethylene-acrylate copolymer and SEBS-g-MAH. Wherein, the mass percent of the EVA-g-MAH is 3%, the mass percent of the ethylene-acrylate copolymer is 2%, and the mass percent of the mixture in the SEBS-g-MAH is 1%.
The lubricating additive accounts for 4 percent by mass, and is a mixture of zinc stearate, EBS and PE wax. Wherein, the mass percent of zinc stearate is 1%, the mass percent of calcium stearate is 1.3%, and the mass percent of PE wax is 1.7%.
The antioxidant is 0.25 percent by mass and is a mixture of antioxidant 1010 and antioxidant 168, wherein the antioxidant 1010 is 0.1 percent by mass, and the antioxidant 168 is 0.15 percent by mass.
The superfine calcium carbonate accounts for 21 percent by mass, and is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The heat stabilizer is a mixture of a rare earth calcium zinc composite stabilizer and thioether, wherein the mass percent of the rare earth calcium zinc composite stabilizer is 2.75%, and the mass percent of the thioether is 1%.
The preparation method of the composite short fiber reinforced PVC resin tile of this example is the same as the preparation method of the composite short fiber reinforced PVC resin tile of example 1.
Example 4
This example is basically the same as example 1, except for the following points:
the mass percent of the PVC resin is 42 percent, and the PVC resin is general PVC resin of suspension polymerization method.
The mass percent of the ASA toning resin is 3 percent, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 14 percent. The short fiber is a mixture of superfine basalt short fiber, polyester fiber and whisker short fiber. Wherein, the diameters of the superfine basalt short fiber and the polyester fiber are both 6 μm, and the lengths are both 8 mm. The whisker short fiber is CaCO with the diameter of 16nm and the length-diameter ratio of 753Mixtures of whiskers with silicon-calcium-magnesium whiskers, wollastonite, CaCO3The mass percent of the crystal whisker is 6 percent, the mass percent of the silicon-calcium-magnesium crystal whisker is 3 percent, and the mass percent of the wollastonite is 5 percent.
The mass percent of the compatilizer is 7 percent, and the compatilizer is SEBS-g-MAH.
The mass percent of the lubricating additive is 2 percent, and the lubricating additive is PE wax.
The antioxidant accounts for 0.25 percent by mass, and the antioxidant is 1010.
The superfine calcium carbonate accounts for 26 percent by mass, and is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The heat stabilizer is 5.75% by mass, and the heat stabilizer is a mixture of phosphite and thioether, wherein the mass percentage of phosphite is 4.5% and the mass percentage of thioether is 1.25%.
The preparation method of the composite short fiber reinforced PVC resin tile of this example is the same as the preparation method of the composite short fiber reinforced PVC resin tile of example 1.
Example 5
This example is basically the same as example 1, except for the following points:
the mass percent of the PVC resin is 41.5 percent, and the PVC resin is general PVC resin of suspension polymerization method.
The mass percent of the ASA toning resin is 4 percent, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 23.5%. The short fiber is a mixture of polyester fiber and whisker short fiber. Wherein, the diameters of the superfine basalt short fiber and the polyester fiber are both 6 μm, and the lengths are both 8 mm. The whisker short fiber is CaCO with the diameter of 16nm and the length-diameter ratio of 753Mixtures of whiskers with silicon-calcium-magnesium whiskers, wollastonite, CaCO3The mass percent of the crystal whisker is 8 percent, the mass percent of the silicon-calcium-magnesium crystal whisker is 10 percent, and the mass percent of the wollastonite is 5.5 percent.
The mass percent of the compatilizer is 6 percent, and the compatilizer is SEBS-g-MAH.
The mass percent of the lubricating additive is 2 percent, and the lubricating additive is PE wax.
The antioxidant accounts for 0.25 percent by mass, and the antioxidant is a mixture of antioxidants 168.
The mass percentage of the superfine calcium carbonate is 19.5 percent, and the superfine calcium carbonate is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The heat stabilizer is 3.25% by mass, and the heat stabilizer is a mixture of phosphite ester and thioether, wherein the mass percent of phosphite ester is 2.25%, and the mass percent of thioether is 1%.
The preparation method of the composite short fiber reinforced PVC resin tile of this example is the same as the preparation method of the composite short fiber reinforced PVC resin tile of example 1.
Example 6
This example is basically the same as example 1, except for the following points:
the mass percent of the PVC resin is 56 percent, and the PVC resin is general PVC resin of suspension polymerization method.
The mass percent of the ASA toning resin is 3 percent, and the ASA toning resin can be prepared into white.
The mass percentage of the short fiber is 10 percent. The short fiber is whisker short fiber. Wherein the whisker short fiber is a mixture of silicon calcium magnesium whisker with the diameter of 16nm and the length-diameter ratio of 75 and wollastonite, the mass percent of the silicon calcium magnesium whisker is 6 percent, and the mass percent of the wollastonite is 4 percent.
The mass percent of the compatilizer is 6 percent, and the compatilizer is SEBS-g-MAH.
The lubricating assistant accounts for 3.7 percent by mass, and the lubricating assistant is calcium stearate.
The antioxidant accounts for 0.3 percent by mass, and is a mixture of the antioxidant 1010 and the antioxidant 168, wherein the antioxidant 1010 accounts for 0.1 percent by mass, and the antioxidant 168 accounts for 0.2 percent by mass.
The superfine calcium carbonate accounts for 18 percent by mass, and is heavy calcium carbonate with the mesh number of more than 1000 meshes.
The mass percentage of the heat stabilizer is 3 percent, and the heat stabilizer is alkyl organic tin stabilizer.
The preparation method of the composite short fiber reinforced PVC resin tile of this example is the same as the preparation method of the composite short fiber reinforced PVC resin tile of example 1.
The present invention separately tested the properties of the PVC resin tiles prepared in examples 1-6, such as tensile strength, elongation at break, flexural strength, flexural modulus, notched impact strength, vicat softening temperature, etc., as compared to the existing PVC resin tiles. The existing PVC resin tile collected in the test consists of PVC resin (GS-5 type), ASA toning resin, zinc stearate, calcium stearate, PE wax, antioxidant 1010, antioxidant 168, heavy calcium carbonate and heat stabilizer.
The test method is as follows:
the tensile strength was tested according to GB/T1040 standard. Sample type is type i, specimen size (mm): 170 (length) × 20(± 0.2) (end width) × 4.0(± 0.2) (thickness), and a drawing speed of 10 mm/min;
the flexural strength and flexural modulus were tested according to the GB/T9341 standard. Sample type is type i, specimen size (mm): 80(± 0.2) × 10(± 0.2) × 4.0(± 0.2), bending speed is 10 mm/min;
the notched impact strength was examined according to the GB/T1043 standard. Sample type is type i, specimen size (mm):
(mm): 80 (+ -0.2) times 10 (+ -0.2) times 4.0 (+ -0.2), the notch type is class A, and the residual thickness of the notch is 3.2 mm.
The properties of the PVC resin tiles prepared in examples 1 to 6 according to the present invention, such as tensile strength, elongation at break, flexural strength, flexural modulus, notched impact strength, vicat softening temperature, and the like, measured in the above-described test manner are as follows:
Figure BDA0003407148390000091
TABLE 1
It can be seen from Table 1 that the PVC resin tiles prepared in examples 1-6 of the present invention are superior to the prior art PVC resin tiles in tensile strength, elongation at break, flexural strength, flexural modulus, notched impact strength, Vicat softening temperature, and other properties, compared to the prior art PVC resin tiles. Meanwhile, the test results show that when the components and the mass percentages of the short fibers and the compatilizer are changed, the properties of the PVC resin tile such as the tensile strength, the elongation at break, the bending strength, the bending modulus, the notch impact strength, the Vicat softening temperature and the like are changed, which fully shows that the compatibility of the compatilizer and the short fibers can effectively improve the properties of the material such as the dimensional stability, the thermal deformation temperature, the impact property, the tensile strength, the bending modulus, the bending strength and the like, and well solves the problem of poor strength, impact resistance and heat resistance of the existing PVC resin tile.
As described above, the present invention can be preferably realized.

Claims (10)

1. The composite short fiber reinforced PVC resin tile is characterized by comprising the following components: PVC resin, ASA toning resin, short fiber, lubricating additive, compatilizer, antioxidant, heat stabilizer and superfine calcium carbonate, wherein the mass percentages of the components are as follows:
the mass percent of the PVC resin is 40-60%;
the mass percent of the ASA toning resin is 3-5%;
the mass percentage of the short fiber is 10-30%;
the mass percent of the compatilizer is 3-10%;
the mass percentage of the lubricating additive is 2-5%;
the mass percent of the antioxidant is 0.15-0.3%;
the mass percent of the superfine calcium carbonate is 18-30 percent;
the mass percentage of the heat stabilizer is 3-8%.
2. The composite short fiber reinforced PVC resin tile according to claim 1, wherein the short fiber and the compatilizer form a net structure in the PVC phase after chemical coupling, wherein the short fiber is one or more of superfine basalt short fiber, polyester fiber and whisker short fiber; the diameters of the superfine basalt short fibers, the polyester fibers and the polyester fibers are 1-8 mu m, and the lengths of the superfine basalt short fibers, the polyester fibers and the polyester fibers are 1-10 mm; the whisker short fiber is CaCO with the diameter of 5-20nm and the length-diameter ratio of 15-1003Whiskers, CaSO4One or more of whiskers, silicon calcium magnesium whiskers, magnesium salt whiskers and wollastonite.
3. The composite short fiber reinforced PVC resin tile according to claim 1, wherein the compatibilizer is one or a mixture of EVA-g-MAH, ethylene-acrylate copolymer, ethylene-methacrylate copolymer, SEBS-g-MAH.
4. The composite short fiber reinforced PVC resin tile as claimed in claim 1, wherein the ASA toning resin is impact modified resin polymerized by terpolymer of styrene, acrylonitrile and acryl rubber, and the ASA toning resin can be different colors.
5. The composite short fiber reinforced PVC resin tile according to claim 1, wherein the lubricating additive is one or more of zinc stearate, calcium stearate, EBS, PE wax.
6. The composite short fiber reinforced PVC resin tile according to claim 1, wherein the antioxidant is one or more of antioxidant 1010, antioxidant 168, and silicone oil.
7. The PVC resin tile reinforced with composite short fibers according to claim 1, wherein the superfine calcium carbonate is heavy or light calcium carbonate with a mesh number of more than 1000 meshes.
8. The composite short fiber reinforced PVC resin tile according to claim 1, wherein the heat stabilizer is a mixture of one or more of rare earth calcium zinc composite stabilizer, epoxy compound, phosphite ester, thioester, thioether, hindered phenol, polyol or ester thereof, and beta-diketone compound.
9. The composite short fiber reinforced PVC resin tile according to claim 1, wherein said PVC resin is a general purpose PVC resin of suspension polymerization.
10. A method for preparing a composite short fiber reinforced PVC resin tile according to any one of claims 1 to 9, comprising the steps of:
step 1: mixing PVC resin, a lubricating assistant, a heat stabilizer, superfine calcium carbonate and an antioxidant by a high-speed mixer to obtain a PVC resin mixture, and cooking the PVC resin mixture by the high-speed mixer;
step 2: introducing the cooked PVC resin mixture obtained in the step 1 into a horizontal mixer, adding a compatilizer and short fibers, and uniformly mixing to obtain a PVC resin short fiber mixture;
and step 3: introducing the obtained PVC resin fiber mixture into a conical double-screw extruder, heating the conical double-screw extruder to 160-;
and 4, step 4: attaching the ASA toning resin to the outer surface of the reinforced PVC layer through a single-screw extruder, extruding the ASA toning resin and the reinforced PVC layer through a thermoforming extruder, and extruding to obtain a PVC resin sheet;
and 5: and carrying out compression molding on the obtained PVC resin sheet to finally obtain the PVC resin tile.
CN202111520502.3A 2021-12-13 2021-12-13 Composite short fiber reinforced PVC resin tile and preparation method thereof Active CN113956589B (en)

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