WO2017215572A1 - Self-reinforcing profiled bar, preparation method therefor and application thereof - Google Patents

Abstract

A self-reinforcing profiled bar, a preparation method therefor and an application thereof. The self-reinforcing profiled bar comprises, in parts by weight, 100 parts of PVC profile and 5-120 parts of reinforcing lining material provided in a cavity of the PVC profile. The reinforcing lining material comprises the following components in parts by weight: 25-65 parts of styrene-based copolymer and 30-65 parts of reinforcing agent. The preparation method therefor comprises: first preparing a reinforcing lining material; and then, performing co-extrusion by using a main machine and an auxiliary machine designed perpendicular to the main machine, the main machine being used for extruding a PVC profile, the auxiliary machine being used for extruding the reinforcing lining material, and the main machine and the auxiliary machine performing extrusion simultaneously; and cooling and shaping after molding to obtain a self-reinforcing profiled bar. The self-reinforcing profiled bar can avoid the peeling problem between a reinforcing lining and the profile during transportation, installation and use, and the carbonization problem of the PVC profile caused by high temperature co-extrusion, and therefore has good production stability and molding stability.

Description

Self-reinforced profiled material and preparation method and application thereof Technical field

The invention relates to the technical field of plastic profiles, in particular to a self-reinforced profile material and a preparation method and application thereof.

Background technique

PVC profiles are widely used in building doors and windows, wood-plastic flooring, furniture panels, etc. However, PVC materials themselves have low rigidity and poor resistance to deformation, and steel linings are required when used as door and window materials. Although the traditional metal steel lining can effectively improve the deformation resistance of PVC profiles, the steel lining has the disadvantages of high production energy consumption, poor corrosion resistance, thermal insulation, poor sound insulation, high material density and low welding angle strength. Moreover, when the profile is installed, the process is complicated, and the installer needs to fix the steel lining and the steel profile at the construction site, and the assembly process of the door and window installation is added. Based on this situation, related companies have introduced plastic-based materials to replace traditional steel. The plastic itself has the advantages of good heat insulation, corrosion resistance and light weight. However, the unmodified plastic rigidity is too far from the steel to meet the deformation resistance requirements of the profile.

The use of glass fiber reinforced means can greatly increase the rigidity of the plastic, and provides a solution for this purpose, such as CN 102817529 B, CN 203066745 U, CN 202227876 U, CN 103075071 B and the like, a glass fiber reinforced PBT is disclosed. Any one of carbon fiber reinforced PBT and modified PBT is a reinforcing strip, and a self-reinforced profile material based on PVC material is used instead of the conventional steel lining reinforcing profile. However, in these schemes, the following deficiencies exist: (1) The high temperature co-extrusion of the substrate PVC and the reinforcing strip PBT is likely to cause decomposition and foaming of the PVC substrate, carbonization, thereby causing discoloration of the profile and large odor; (2) reinforcing strip The interface between PBT and substrate PVC is poor. During the transportation, installation and use of the profile, the peeling of the substrate PVC and the reinforcing strip PBT is easy due to collision and bending, which greatly reduces the reinforcing effect of the reinforcing strip. Limit its application.

CN 103147664 B discloses a profiled co-extrusion die, which solves the problem of paste and compatibility of PVC by providing a heat insulation layer and an internal rib card groove inside the mold, although the above problems can be partially solved, but the mold cost greatly increase.

Summary of the invention

In order to overcome the above deficiencies of the prior art, it is an object of the present invention to provide a self-reinforcing profile which avoids the problem of peeling of the liner and the PVC profile during transportation, installation and use, and can be avoided. High temperature co-extrusion causes carbonization decomposition of PVC profiles, with good production stability and molding stability.

Another object of the present invention is to provide a process for the preparation of the above self-reinforced profile.

The invention is achieved by the following technical solutions:

A self-reinforcing profile comprising a PVC profile and a reinforced lining material disposed within the cavity of the PVC profile, the parts by weight The numbers are as follows:

PVC profiles 100 parts

Reinforced lining material 5 parts - 120 parts

Wherein, the reinforcing lining material comprises, in parts by weight, the following components:

Styrene-based copolymer 25-65 parts;

Enhancer 30-65 parts.

The adhesion between the PVC profile and the reinforced lining material is 400-600 N. The adhesion test is carried out by injection molding a PVC profile into a 2 mm×10 mm×100 mm spline, and then placing the PVC spline in the same manner. The 4mm×10mm×100mm mold was over-molded to enhance the lining material, and the adhesion between the PVC profile and the reinforced lining material was obtained. Finally, the adhesion force was tested by Zwick's tensile tester.

The lining material has an extrusion temperature range of 160-215 °C.

The styrene-based copolymer resin has a melt flow rate of from 1 g/10 min to 80 g/10 min at 220 ° C under a load of 10 kg, which is more easily extruded, preferably from 5 g/10 min to 20 g/10 min, more preferably 10 g/ 10min-15g/10min.

The styrene-based copolymer is selected from the group consisting of styrene-acrylonitrile copolymer AS, styrene-butadiene-acrylonitrile copolymer ABS, methyl methacrylate-styrene-butadiene-acrylonitrile copolymer MABS, Acrylonitrile-styrene-acrylate copolymer ASA, acrylonitrile-ethylene propylene diene monomer-styrene copolymer AES, acrylonitrile-silicone rubber-styrene copolymer SAS, methyl methacrylate-styrene copolymer One or several of the MS.

The reinforcing agent is selected from one or more of glass fiber, carbon fiber, basalt fiber, talc powder, wollastonite, whisker, glass microbead, preferably glass fiber, and the glass fiber has a diameter of 6-20 μm.

The reinforcing lining material of the present invention further comprises 0.5-10 parts of a compatibilizer, 0.1-5.0 parts of a coupling agent, and 0.1-5.0 parts of a processing aid in parts by weight.

The compatibilizer is selected from the group consisting of styrene-butadiene-acrylonitrile-maleic anhydride copolymer, styrene-butadiene-acrylonitrile-glycidyl methacrylate copolymer, styrene-acrylonitrile-Malay One or more of an acid anhydride copolymer, a styrene-acrylonitrile-glycidyl methacrylate copolymer, an acrylate resin, a methyl methacrylate-styrene copolymer resin, a styrene-maleic anhydride copolymer ;

The coupling agent is selected from one or more of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, and a zirconate coupling agent; the processing aid includes a lubricant or an anti- One or several of the oxygen agents.

The lubricant is selected from the group consisting of a fatty acid salt, a fatty acid amide, pentaerythritol stearate, a solid paraffin, a liquid paraffin, a stearate, a silicone, an N, N'-ethylene bis stearic acid amide or Several.

The antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] quaternary tetraol and tris[2,4-di-tert-butylbenzene a mixture of phosphites.

The method for preparing a self-reinforced profile according to the present invention comprises the following steps:

(1) Preparation of reinforcing lining material: in addition to the reinforcing agent, the raw materials of the reinforcing lining are added to the high-mixing machine according to the mixing ratio to be uniformly mixed; the above mixed material is fed into the twin-screw extruder, wherein the reinforcing agent passes the first A venting or side feeding system is added, and melt extrusion granulation is performed to enhance the lining material;

(2) Co-extrusion: co-extrusion preparation is carried out by using the main machine and the auxiliary machine vertically designed by the main machine. The main machine is used for extruding PVC profiles, the auxiliary machine is used for extrusion and reinforcing lining materials, and the main machine and auxiliary machine are simultaneously extruded and formed. Post-cooling shaping results in a self-reinforced profile.

In the step (1), the mixing temperature is 20-50 ° C, the rotation speed is 100-800 rpm, and the mixing time is 2-5 minutes; the temperature of each section of the twin-screw extruder is 200-240 ° C, double The screw extruder has a length to diameter ratio of 36-48 and a screw speed of 300-500 rpm.

In the step (2), the main machine is a twin-screw extruder, and the temperature of each section of the twin-screw extruder is 150-200 ° C; the auxiliary machine is a single-screw extruder, and the temperature of each section of the single-screw extruder is 160-215 ° C.

Preferably, the main machine is a twin-screw extruder, the head temperature is 175-195 ° C, the temperature of the fuselage one zone is 155-165 ° C, the temperature of the fuselage two zone is 165-175 ° C, and the temperature of the fuselage three zones is 175-185 ° C, the temperature of the four fuselage of the fuselage is 175-185 ° C, the screw speed is 18-22 rpm; the auxiliary machine is a single screw extruder, the head temperature is 175-195 ° C, the temperature of the fuselage area is 160 -165 ° C, the fuselage two zone temperature is 160-175 ° C, the fuselage three zone temperature is 175-185 ° C, the fuselage four zone temperature is 175-185 ° C, the screw speed is 18-22rpm.

The invention also provides the use of the above self-reinforced profile in building doors and windows, wood-plastic flooring or furniture panels.

Compared with the prior art, the present invention has the following advantages:

(1) The reinforcing lining material used in the present invention is an amorphous material, and since it has better compatibility with the PVC profile, the reinforcing lining material is prevented from being promoted during transportation, installation and use of the self-reinforced profiled material. The peeling problem of PVC profiles can be widely used in building doors and windows, wood-plastic flooring or furniture panels;

(2) The reinforced lining material used in the invention can be stably extruded in the temperature range of 160-215 ° C, has a wider processing window, and the extrusion molding temperature at 160 ° C is almost the same as that of the PVC material, and is solved from the root cause. In the co-extrusion process, the decomposition of PVC profiles due to high temperature extrusion, carbonization, discoloration, and odor problems greatly improve the production stability of co-extruded profiles, while the lower molding temperature also greatly reduces energy consumption. Environmental protection;

(3) The reinforced lining material used in the present invention has higher melt strength and more excellent processing and molding properties, thereby greatly improving the stability of molding.

(4) Under the condition of providing the same rigidity, the reinforced lining material of the invention has lower density, and the self-reinforced co-extruded profile is lighter in weight, conforming to the light weight and low carbon environmental protection trend advocated by the state.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a photograph of the adhesion of a PVC profile to a reinforced liner during the adhesion test.

detailed description

The invention is further described by the following examples in order to provide a better understanding of the invention.

The raw materials used are as follows:

PVC profiles, PVC-EX23, blonde technology homemade;

AS styrene-acrylonitrile resin, SAN PN-137H, Taiwan Chi Mei, melt flow rate 12g/10min;

AS styrene-acrylonitrile resin, SAN NF-5, Taihua custom; melt flow rate 5g/10min;

AS styrene-acrylonitrile resin, SAN NF2200, Taiwan, melt flow rate 35g/10min;

ABS resin, ABS AG10NP, Taiwan; melt flow rate 6g/10min; PBT resin, PBT 1200-211M, Changchun, Taiwan;

ASA styrene-acrylonitrile-acrylate copolymer, ASA PW-997, Taiwan Chi Mei; melt flow rate 5g/10min; glass fiber, ECS13-4.5-534A, Tongxiang boulders, diameter 13μm.

Maleic anhydride styrene copolymer, SMA-700, Shanghai Huawen Company;

Coupling agent, KH560, boiling point chemical industry;

Lubricant, N, N'-ethylene bis stearamide, Shanghai Ningcheng;

Antioxidants, 168 and 1010, Swiss Ciba Specialty Chemicals.

Preparation of reinforced lining materials:

In addition to the reinforcing agent, the raw materials of the reinforcing lining are added to the high-mixing machine to be uniformly mixed according to the ratio of Table 1; the above mixed material is fed into the twin-screw extruder, wherein the reinforcing agent passes through the first vent hole or the side feeding The system is added, melt extruded and granulated, that is, the inner liner is reinforced. Wherein, the mixing temperature is 20-50 ° C, the rotation speed is 100-800 rpm, the mixing time is 2-5 minutes; the temperature of each section of the twin-screw extruder is 200-240 ° C, the twin-screw extruder The aspect ratio is 36-48 and the screw speed is 300-500 rpm.

The obtained lining material was dried in a blast oven at 90 ° C for 4 hours, and then sampled with a Ningbo Haitian injection molding machine BS650-III, and the injection temperature was set to 230-240-240-250 ° C, and the obtained reinforcing lining was obtained. The properties of the physical property test results of the materials are shown in Table 1.

The tensile strength was tested according to the ISO 527 standard. The sample was a type I specimen and the test equipment was a tensile tester Z020 from Zwick, Germany.

The bending strength is tested according to ISO 178. The sample size is 4mm × 10mm × 80mm, and the test equipment is Z005 Roell's bending tester Z005.

The IZOD notched impact strength was tested in accordance with the ISO 180 standard, and the sample size was 4 mm × 10 mm × 80 mm, and the notch depth was 2 mm. The test equipment is the impact tester HIT5.5P from Zwick Roell, Germany.

The density was tested according to the ISO 1183 standard, and the test equipment was a digital liquid density meter MD-300S of Japan ALFA MIRAGE.

Adhesion test: PVC resin is injected into 2mm×10mm×100mm spline, then PVC spline is placed in 4mm×10mm×100mm mold to re-inject the reinforced lining material to obtain PVC profile and reinforcement. The adherent of the lining material is shown in Figure 1. Finally, Zwick's tensile tester was used to test the bond strength to characterize the bond between the reinforced liner and the PVC profile.

Table 1 reinforced lining each group distribution ratio (parts by weight) and physical properties

[Correct according to Rule 26 21.08.2017]

Continued Table 1:

[Correct according to Rule 26 21.08.2017]

It can be seen from Table 1 that the reinforcing lining material of the present invention has more excellent mechanical properties in the case of the same glass fiber content, and in particular, the rigidity is better than that of the reinforced PBT material, and the advantage in plastic-forming steel is more obvious. Secondly, under the condition of providing the same rigidity, the reinforced lining material of the invention has lower density, and the prepared self-reinforced co-extruded profile has a lighter weight, which is in line with the nationally advocated lightweight and low carbon environmental protection trend.

Preparation of self-reinforced profiles:

The main machine and the auxiliary machine vertically designed by the main machine are used for co-extrusion preparation. According to the ratio of Table 2, the main machine is used for extruding PVC profiles, the auxiliary machine is used for extrusion and reinforcing lining materials, and the main machine and auxiliary machine are simultaneously extruded. Cooling and setting to obtain a self-reinforced profile;

Wherein, the main machine is a twin-screw extruder, the head temperature is 175-195 ° C, the temperature of the fuselage one zone is 155-165 ° C, the temperature of the fuselage two zone is 165-175 ° C, and the temperature of the fuselage three zones is 175 -185 ° C, the temperature of the fuselage four zones is 175-185 ° C, the screw speed is 18-22 rpm; the auxiliary machine is a single screw extruder, the head temperature is 175-195 ° C, the temperature of the fuselage one zone is 160- At 165 ° C, the temperature in the second zone of the fuselage is 160-175 ° C, the temperature in the three zones of the fuselage is 175-185 ° C, the temperature in the four zones of the fuselage is 175-185 ° C, and the screw speed is 18-22 rpm.

Table 2 Distribution ratios and performance results of each group of self-reinforced profiles (parts by weight)

[Correct according to Rule 26 21.08.2017]

It can be seen from the data in Table 2 that the adhesion between the reinforced PBT material and the PVC profile is only about 140N, and the hair is used. The enhanced lining of the lining has an adhesion to the PVC profile of 400-600 N, which is three times that of the reinforced PBT material, which shows that the reinforced lining of the invention has better compatibility with the PVC profile, in the profile Peeling does not occur during transportation, installation and use. Secondly, the reinforced PBT material can be plasticized and stabilized in the temperature range of 220-250 ° C, the processing window is narrow and the processing temperature is high, and the reinforced lining of the invention is plasticized within a wide range of 160-215 ° C. It is very good and can be stably extruded, which shows that the reinforced lining of the invention has a wider processing window, and the extrusion temperature at 160 ° C is almost the same as that of the PVC profile, and the high-temperature co-extrusion of the PVC profile is avoided from the root. Decomposition foaming, carbonization discoloration, large odor, etc., while the lower molding temperature will greatly reduce energy consumption and be more environmentally friendly.

Claims (13)

1. A self-reinforcing profile characterized by comprising a PVC profile and a reinforcing lining material disposed in the cavity of the PVC profile, the weight fractions of which are as follows:

   PVC profiles 100 parts

   Reinforced lining material 5 parts - 120 parts

   Wherein, the reinforcing lining material comprises, in parts by weight, the following components:

   Styrene-based copolymer 25-65 parts;

   Enhancer 30-65 parts.
2. The self-reinforcing profile according to claim 1, wherein the adhesion of the PVC profile to the reinforcing lining material is 400-600 N, and the adhesion test is performed by: injecting a PVC profile into 2 mm. ×10mm×100mm spline, then put the PVC spline in a 4mm×10mm×100mm mold and over-injection reinforced lining material to obtain the adhesion of PVC profile and reinforced lining material, and finally pass Zwick’s A tensile tester was used to test the amount of adhesion.
3. The self-reinforced profile of claim 1 wherein the reinforced lining material has an extrusion temperature interval of from 160 to 215 °C.
4. The self-reinforcing profile according to claim 1, wherein the styrene-based copolymer has a melt flow rate of from 1 g/10 min to 80 g/10 min, preferably 5 g/10 min at 220 ° C under a load of 10 kg. -20 g/10 min, more preferably 10 g/10 min-15 g/10 min.
5. The self-reinforced profile according to claim 4, wherein the styrene-based copolymer is selected from the group consisting of styrene-acrylonitrile copolymer AS, acrylonitrile-butadiene-styrene copolymer ABS, methacrylic acid. Methyl ester-acrylonitrile-butadiene-styrene copolymer MABS, acrylonitrile-styrene-acrylate copolymer ASA, acrylonitrile-ethylene propylene diene monomer-styrene copolymer AES, acrylonitrile-silicone rubber One or more of styrene copolymer SAS, methyl methacrylate-styrene copolymer MS.
6. The self-reinforced profile according to claim 1, wherein the reinforcing agent is one or more selected from the group consisting of glass fiber, carbon fiber, basalt fiber, talc powder, wollastonite, whisker, and glass microbead. Preferred is glass fiber.
7. The self-reinforcing profile according to claim 6, wherein the glass fiber has a diameter of 6 to 20 μm.
8. The self-reinforced profile according to claim 1, wherein the reinforcing lining material further comprises 0.5-10 parts of a compatibilizer, 0.1-5.0 parts of a coupling agent, and a processing aid 0.1 in parts by weight. -5.0 parts.
9. The self-reinforced profile according to claim 8, wherein the compatibilizing agent is selected from the group consisting of styrene-butadiene-acrylonitrile-maleic anhydride copolymer, styrene-butadiene-acrylonitrile-A Glycidyl acrylate copolymer, styrene-acrylonitrile-maleic anhydride copolymer, styrene-acrylonitrile-glycidyl methacrylate copolymer, acrylate resin, methacrylic acid One or more of a methyl ester-styrene copolymer, a styrene-maleic anhydride copolymer; the coupling agent is selected from the group consisting of a silane coupling agent, a titanate coupling agent, and an aluminate coupling agent One or more of zirconate coupling agents; the processing aid includes one or more of a lubricant or an antioxidant.
10. The method for preparing a self-reinforced profile according to any one of claims 1 to 9, comprising the steps of:

    (1) Preparation of reinforcing lining material: in addition to the reinforcing agent, the raw materials of the reinforcing lining material are added to the high-mixing machine according to the mixing ratio to be uniformly mixed; the above mixed material is fed into the twin-screw extruder, wherein the reinforcing agent passes The first venting hole or side feeding system is added, melt extrusion granulation, that is, the lining material is reinforced;

    (2) Co-extrusion: co-extrusion preparation is carried out by using the main machine and the auxiliary machine vertically designed by the main machine. The main machine is used for extruding PVC profiles, the auxiliary machine is used for extrusion and reinforcing lining materials, and the main machine and auxiliary machine are simultaneously extruded and formed. Post-cooling shaping results in a self-reinforced profile.
11. The method for preparing a reinforced profile according to claim 10, wherein in the step (1), the mixing temperature is 20-50 ° C, the rotation speed is 100-800 rpm, and the mixing time is 2-5 minutes. The temperature of each section of the twin-screw extruder is 200-240 ° C, the length-to-diameter ratio of the twin-screw extruder is 36-48, and the screw rotation speed is 300-500 rpm.
12. The method for preparing a self-reinforcing profile according to claim 10, wherein in the step (2), the main machine is a twin-screw extruder, and the temperature of each section of the twin-screw extruder is 150-200 ° C. The auxiliary machine is a single-screw extruder, and the temperature of each section of the single-screw extruder is 160-215 ° C; preferably, the main machine is a twin-screw extruder, the head temperature is 175-195 ° C, and the fuselage area is The temperature is 155-165 ° C, the temperature of the fuselage two zone is 165-175 ° C, the temperature of the fuselage three zones is 175-185 ° C, the temperature of the fuselage four zones is 175-185 ° C, and the screw rotation speed is 18-22 rpm; The machine is a single-screw extruder with a head temperature of 175-195°C, a temperature of 160-165°C in the fuselage area, 160-175°C in the second zone, and 175-185°C in the fuselage. The temperature of the four zones of the fuselage is 175-185 ° C, and the screw speed is 18-22 rpm.
13. Use of the self-reinforced profile of any of claims 1-9 in building doors and windows, wood-plastic flooring or furniture panels.

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