CN114482806A - Multilayer co-extrusion composite hollow glass warm edge spacing strip - Google Patents

Multilayer co-extrusion composite hollow glass warm edge spacing strip Download PDF

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CN114482806A
CN114482806A CN202210102228.6A CN202210102228A CN114482806A CN 114482806 A CN114482806 A CN 114482806A CN 202210102228 A CN202210102228 A CN 202210102228A CN 114482806 A CN114482806 A CN 114482806A
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parts
frame body
warm edge
hollow glass
modified polypropylene
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CN114482806B (en
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王建国
何剑杰
孙东
王军裕
刘光晨
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Shandong Liangcai Technology Development Co ltd
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Yuyao China Plastic City Plastic Research Institute
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • 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
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/14—Copolymers of propene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/10—Homopolymers or copolymers of propene
    • C08J2423/12—Polypropene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/10—Homopolymers or copolymers of propene
    • C08J2423/14—Copolymers of propene
    • 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
    • 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
    • C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2461/02—Condensation polymers of aldehydes or ketones only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing

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  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
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Abstract

The invention discloses a multilayer co-extrusion composite hollow glass warm edge spacing strip. The composite hollow glass warm edge spacing bar is a three-layer structure product prepared by a melting plasticizing and multilayer co-extrusion molding process. The composite hollow glass warm edge spacing bar comprises the following raw materials in parts by weight: modified polypropylene: 85-95 parts of a solvent; hot melt adhesive: 2-5 parts; high barrier material: 3-10 parts. The warm edge spacer bar is compounded by high polymer materials, does not contain any metal material, and has low heat conductivity coefficient and excellent mechanical property. The coated high barrier layer reduces the permeability of water and gas, prolongs the service life of the hollow glass, has easily obtained raw materials, mature extrusion process and high production efficiency, and reduces the production cost of the warm edge spacer.

Description

Multilayer co-extrusion composite hollow glass warm edge spacing strip
The application is a divisional application. The parent application number is: 201910309117.0, filing date: in 2019, 17 th month 04, the invention name is: a multilayer co-extrusion composite hollow glass warm edge spacing bar and a preparation method thereof.
Technical Field
The invention relates to the technical field of production of a warm edge spacing strip of hollow glass, in particular to a multilayer co-extrusion composite warm edge spacing strip of hollow glass.
Background
China is at the important moment of industrial transformation and upgrading, energy conservation and emission reduction are key to technological innovation, and the whole society actively advocates energy conservation and emission reduction. The energy saving action of the building industry is an important part in production and life because the building energy consumption accounts for about 30% of the total urban energy consumption, and the door and window energy consumption accounts for more 50% of the building energy consumption. The edges of the hollow glass doors and windows are subjected to heat conduction through the spacing strips, so that heat loss is caused, and the heat loss is a part which cannot be ignored in the energy consumption of the doors and windows. Therefore, the application of the spacer with low thermal conductivity to the hollow glass door and window is an important measure for promoting the energy saving of the building.
At present, the spacer bars on the market mainly comprise cold-edge spacer bars and warm-edge spacer bars, the cold-edge spacer bars are represented by aluminum bars, and the cold-edge spacer bars have high heat conductivity and large heat loss. The warm edge spacing strips are made of materials with small heat conductivity coefficients, so that the heat insulation performance of the edges of the hollow glass is greatly improved, and the condensation is effectively prevented. At present, the warm edge spacing bars on the market mainly comprise stainless steel spacing bars, stainless steel and plastic composite spacing bars and glass fiber reinforced material composite film spacing bars.
The commercial warm edge spacer is expensive and has better heat insulation performance than the commonly used cold edge spacer, but the following problems exist in the production and application processes:
(1) the stainless steel and plastic composite spacing bar can be continuously bent by using a bending machine, but the stainless steel material still causes more heat loss. For example, the commercial warm edge spacer made of stainless steel and high-strength polypropylene has a high thermal conductivity and cannot be completely separated from the metal material;
(2) although the spacing bar of the glass fiber reinforced material pasting composite film has low heat conductivity coefficient and excellent barrier property, the production process and equipment are complex, and the production efficiency is seriously influenced by the pasting process; for example, the warm edge spacer which is commercially available and is made of reinforced nylon and aluminum foil is expensive due to the high price of nylon materials and the complex film pasting process, and the product popularity is low.
The existing patent technologies are mostly improvement on composite structures or processes of metal profiles and plastic profiles. The invention patent CN105089449A proposes that the bonding composite molding is finished by designing a stainless steel section and a modified polypropylene section, and then designing a form of buckling the openings in pairs. This design has reduced the plastics holding surface at space stop bar top for coefficient of heat conductivity is lower, has compromise the performance of can bending simultaneously. However, the invention cannot completely separate from metal materials, and has the problems of complicated profile structure design and composite process and the like.
The invention patent can completely separate from the metal section and focuses on the development of the warm edge spacing strip of the polymer composite material. The invention patent CN103867077A proposes that a warm edge spacer with a double-layer structure is obtained by using an ethylene-vinyl acetate copolymer (EVA) foam material containing a molecular sieve as a support base material and a polyisobutylene modified ethylene-vinyl alcohol copolymer (EVOH) as a barrier material through an extrusion molding process. The thermal conductivity coefficient of the warm edge spacing bar is about 0.05-0.06W/mk, but the tensile strength is only 5-6 MPa, and the elongation at break is 200-300%. Under high load, the warm edge spacer has the problems of large deformation, insufficient support strength and the like, risks of glass loosening, poor air tightness and the like can be generated, and the molecular sieve is coated by a polymer, so that the absorption effect of the molecular sieve on water vapor can be influenced.
The invention patent CN106084628A proposes that a POK type warm edge spacing strip is obtained by adopting filled and reinforced polyketone POK as a spacing strip material and adopting an extrusion molding process. The material has excellent mechanical property and low thermal conductivity coefficient of about 0.25W/mk. But the polyketone material has low yield, high price and large import dependence, has high cost for producing the warm edge spacer, and is not beneficial to the popularization of the building material industry.
Disclosure of Invention
The invention aims to solve the technical problems of high heat conductivity coefficient, complex production process, high price and the like of the traditional hollow glass warm edge spacing bar and provides a multilayer co-extrusion composite hollow glass warm edge spacing bar and a preparation method thereof. The composite hollow glass warm edge spacer has the advantages of low cost, convenient production and excellent comprehensive performance.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the multilayer co-extrusion composite hollow glass warm edge spacing bar comprises the following raw materials in parts by weight:
modified polypropylene: 85-95 parts of a solvent;
hot melt adhesive: 2-5 parts;
high barrier material: 3-10 parts.
Preferably, the modified polypropylene is glass fiber reinforced PP or glass fiber/filled reinforced PP.
More preferably, the modified polypropylene comprises the following components in parts by weight:
polypropylene: 48-84.5 parts;
glass fiber: 15-25 parts;
inorganic filler: 0-20 parts of a solvent;
a compatilizer: 0-5 parts;
other auxiliary agents: 0.5-2 parts.
In the above technical solution, the lower limit of the inorganic filler may be 0, and the lower limit of the compatibilizer is not 0.
Most preferably, when the modified polypropylene is glass fiber reinforced PP, the preparation method of the modified polypropylene comprises the following steps:
(1) uniformly mixing 48-84.5 parts of polypropylene, 0-5 parts of compatilizer and 0.5-2 parts of other additives in a high-speed mixer;
(2) extruding and granulating through a double-screw extruder, and introducing 15-25 parts of glass fiber; the temperature of the first section of the double-screw extruder is 180-240 ℃, the temperature of the second section of the double-screw extruder is 200-230 ℃, the temperature of the third section of the double-screw extruder is 180-220 ℃, and the temperature of a machine head of the double-screw extruder is 200-240 ℃.
When the modified polypropylene is glass fiber/filled reinforced PP, the preparation method of the modified polypropylene comprises the following steps:
(1) uniformly mixing 48-84.5 parts of polypropylene, 0-20 parts of inorganic filler, 0-5 parts of compatilizer and 0.5-2 parts of other additives in a high-speed mixer;
(2) extruding and granulating through a double-screw extruder, and introducing 15-25 parts of glass fiber; the temperature of the first section of the double-screw extruder is 180-240 ℃, the temperature of the second section of the double-screw extruder is 200-230 ℃, the temperature of the third section of the double-screw extruder is 180-220 ℃, and the temperature of a machine head of the double-screw extruder is 200-240 ℃.
Preferably, in the step (1), the polypropylene is selected from homo-PP, co-PP, or a mixture of both in different proportions.
Preferably, in the step (1), the inorganic filler is any one or more of calcium carbonate, talcum powder, kaolin, barium sulfate and glass beads.
Preferably, in the step (1), the compatibilizer is maleic anhydride grafted PP or glycidyl methacrylate grafted PP.
Preferably, in the step (1), the other auxiliary agent is any one or more of a silane coupling agent, a lubricant and an anti-aging agent.
More preferably, the anti-aging agent is any one or a combination of a hindered phenol antioxidant, a phosphite antioxidant, a benzotriazole ultraviolet absorbent and a benzophenone ultraviolet absorbent.
More preferably, the anti-aging agent is any one or a mixture of hindered phenol antioxidant 1098, phosphite antioxidant 168, benzotriazole ultraviolet absorbent UV327 and benzophenone ultraviolet absorbent UV 531.
Still more preferably, the anti-aging agent is commercially available formulated UV2038 or UV 2097.
Preferably, in the step (2), the glass fiber is continuous glass fiber or chopped glass fiber, and the fiber diameter is 10-14 μm; the continuous glass fiber is fed from a fiber inlet of a double-screw extruder, and the chopped glass fiber is fed from a side feed inlet of the double-screw extruder.
Preferably, the hot melt adhesive is any one of maleic anhydride grafted PE, polyamide PA, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA) and ethylene-ethyl acrylate copolymer (EEA).
Preferably, the high-barrier material is any one of ethylene-vinyl alcohol copolymer (EVOH), Polyketone (POK), polyvinylidene chloride (PVDC), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN).
A preparation method of a multilayer co-extrusion composite hollow glass warm edge spacing strip comprises the following steps: 85-95 parts of modified polypropylene, 2-5 parts of hot melt adhesive and 3-10 parts of high barrier material are respectively fed into multilayer coextrusion molding equipment according to parts by weight, the modified polypropylene is melted and plasticized at the temperature of 170-220 ℃, the hot melt adhesive is melted and plasticized at the temperature of 100-190 ℃, and the high barrier material is extruded from a neck mold at the same time according to the set weight ratio, so that online compounding is realized, the production flow is simplified, the production cost is reduced, and the multilayer coextrusion composite hollow glass warm edge spacer strip is obtained.
The composite hollow glass warm edge spacing bar comprises an upper frame body and a lower frame body connected with the upper frame body; the top of the upper frame body is provided with a plurality of air holes; the upper frame body is a single-layer modified polypropylene layer, the lower frame body is a three-layer composite layer, and the upper frame body, the lower frame body and the lower frame body are respectively a modified polypropylene layer, a hot melt adhesive layer and a high-barrier material layer from inside to outside.
Furthermore, the cross section of the upper frame body is rectangular, and the cross section of the lower frame body is trapezoidal.
Further, the modified polypropylene layer is made of modified polypropylene.
Furthermore, the modified polypropylene is glass fiber reinforced PP or glass fiber/filling reinforced PP.
Further, the material of the hot melt adhesive layer is hot melt adhesive.
Further, the hot melt adhesive is any one of maleic anhydride grafted PE, polyamide PA, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA) and ethylene-ethyl acrylate copolymer (EEA).
Further, the material of the high barrier material layer is a high barrier material.
Further, the high-barrier material is any one of ethylene-vinyl alcohol copolymer (EVOH), Polyketone (POK), polyvinylidene chloride (PVDC), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN).
Compared with the prior art, the invention has the beneficial effects that:
(1) the warm edge spacing strip is completely compounded by high polymer materials and does not contain any metal component;
(2) the modified PP has higher mechanical property, the high polymer composite material can ensure low heat conductivity coefficient, and the heat insulation property of the warm edge spacer is improved;
(3) the modified polypropylene is wrapped by the high-barrier material, so that the permeability of water vapor, air and inert gas is greatly reduced, and the service life of the hollow glass is prolonged;
(4) the raw materials of the warm edge spacer bar are easy to obtain, the price of the modified polypropylene is low, the multilayer co-extrusion molding process is mature, the production efficiency is high, and the production cost of the warm edge spacer bar can be greatly reduced.
Drawings
FIG. 1 is a cross-sectional view of a composite type hollow glass warm edge spacer of the present invention.
The corresponding part names for the various reference numbers in the figures are:
1-an upper frame body; 2-a lower frame body; 3, air holes; 4-a modified polypropylene layer; 5-hot melt adhesive layer; 6-high barrier material layer.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description and accompanying drawings. It is to be understood that these examples are for further illustration of the invention and are not intended to limit the scope of the invention. In addition, it should be understood that the invention is not limited to the above-described embodiments, but is capable of various modifications and changes within the scope of the invention.
In examples 1 to 8 and comparative examples 1 to 2, the materials and the additives used are commercially available without specific description.
Polypropylene: zhenhai refining T30S, Tai plastic Ningbo 1120;
glass fiber: the continuous glass fiber is ER14-2000-988A, and the chopped glass fiber is Mount Taishan glass fiber T438;
talc powder: zhejiang small stone energy science and technology limited, 1250 mesh;
a compatilizer: energy, GPM 200A;
lubricant: commercially available EBS, calcium stearate, TAS-2A;
coupling agent: commercially available KH 560;
anti-aging agent: commercial built UV 2038;
maleic anhydride grafted PE: wu III science and technology, WSJ-504-2;
ethylene-vinyl acetate copolymer (EVA): mitsui chemistry, P1405;
ethylene-vinyl alcohol copolymer (EVOH): korea, E105B;
polyketone resin (POK): korea Xiaoxing, M630A.
Examples 1 to 8
The glass fiber reinforced PP and the glass fiber/filling reinforced PP in the embodiment are prepared by the following steps:
(1) all other materials except glass fiber were mixed uniformly in a high speed mixer according to table 1;
(2) then extruding and granulating through a double-screw extruder, introducing glass fiber, feeding continuous glass fiber through a fiber inlet, and adding chopped glass fiber through a side feeding port; the temperature of the first section of the double-screw extruder is 180-240 ℃, the temperature of the second section of the double-screw extruder is 200-230 ℃, the temperature of the third section of the double-screw extruder is 180-220 ℃, and the temperature of a machine head of the double-screw extruder is 200-240 ℃.
Comparative examples 1 to 2
The modified PP material in the comparative example was prepared as follows:
all the materials are uniformly mixed in a high-speed mixer according to the table 1, and then are extruded and granulated by a double-screw extruder; the temperature of the first section of the double-screw extruder is 180-240 ℃, the temperature of the second section of the double-screw extruder is 200-230 ℃, the temperature of the third section of the double-screw extruder is 180-220 ℃, and the temperature of a machine head of the double-screw extruder is 200-240 ℃.
The results of the performance tests of the modified PP materials of examples 1 to 8 and comparative examples 1 to 2 are shown in Table 2.
TABLE 1 raw Material composition of modified Polypropylene prepared in inventive examples 1 to 8 and comparative examples 1 to 2
Figure BDA0003492837830000081
TABLE 2 Performance test results of modified polypropylenes obtained in inventive examples 1 to 8 and comparative examples 1 to 2
Figure BDA0003492837830000082
The warm edge spacer for hollow glass in examples 1 to 8 and comparative examples 1 to 2 was prepared by the following steps:
the modified PP prepared in the examples 1-8 and the comparative examples 1-2, the hot melt adhesive and the high barrier material are respectively fed into a double-screw extruder as shown in Table 3, the modified PP is melted and plasticized at 170-220 ℃, the hot melt adhesive is melted and plasticized at 100-170 ℃, and the high barrier material is simultaneously extruded from a neck mold according to a set mass ratio, so that online compounding is realized.
The results of the performance test of the warm edge spacer in examples 1 to 8 and comparative examples 1 to 2 are shown in Table 4.
TABLE 3 raw material composition and Performance test results of the warm edge spacer prepared in examples 1 to 8 of the present invention and comparative examples 1 to 2
Figure BDA0003492837830000091
TABLE 4 Performance test results of warm edge spacer prepared in inventive examples 1 to 8 and comparative examples 1 to 2
Figure BDA0003492837830000092
The structure of the composite type hollow glass warm edge spacing bar is shown in figure 1, and the composite type hollow glass warm edge spacing bar comprises an upper frame body 1 and a lower frame body 2 connected with the upper frame body 1; the top of the upper frame body 1 is provided with a plurality of air holes 3; the upper frame body 1 is a single-layer modified polypropylene layer 4, the lower frame body 2 is a three-layer composite layer, and the modified polypropylene layer 4, the hot melt adhesive layer 5 and the high barrier material layer 6 are respectively arranged from inside to outside.
Further, the cross section of the upper frame 1 is rectangular, and the cross section of the lower frame 2 is trapezoidal.
Further, the material of the modified polypropylene layer 4 is modified polypropylene.
Furthermore, the modified polypropylene is glass fiber reinforced PP or glass fiber/filling reinforced PP.
Further, the material of the hot melt adhesive layer 5 is hot melt adhesive.
Furthermore, the hot melt adhesive is any one of maleic anhydride grafted PE, polyamide PA, ethylene-vinyl acetate copolymer EVA, ethylene-acrylic acid copolymer EAA and ethylene-ethyl acrylate copolymer EEA.
Further, the material of the high barrier material layer 6 is a high barrier material.
Furthermore, the high-barrier material is any one of ethylene-vinyl alcohol copolymer EVOH, polyketone POK, polyvinylidene chloride PVDC, polyethylene terephthalate PET and polyethylene naphthalate PEN.
The hollow glass comprises the composite hollow glass warm edge spacing strip.
The invention discloses a use method of a composite type hollow glass warm edge spacing strip, which comprises the following steps:
when in use, the inner cavity of the warm edge spacing bar is filled with the drying agent; then placing the warm edge spacer between two layers of glass, filling a first sealant at the contact part of two side surfaces of the spacer and the glass, and filling a second sealant between the bottom of the spacer and the two layers of glass; the inert gas is sealed in a cavity formed by two layers of glass, the spacing bar and the sealant, enters the cavity of the spacing bar through the vent hole and is dried by the drying agent.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Those skilled in the art should also realize that changes, modifications, additions and substitutions can be made without departing from the true spirit and scope of the invention.

Claims (2)

1. The multilayer co-extrusion composite type hollow glass warm edge spacing bar is characterized by comprising an upper frame body (1) and a lower frame body (2) connected with the upper frame body (1); the top of the upper frame body (1) is provided with a plurality of air holes (3); the upper frame body (1) is a single-layer modified polypropylene layer (4), the lower frame body (2) is a three-layer composite layer, and the upper frame body, the lower frame body and the lower frame body are respectively a modified polypropylene layer (4), a hot melt adhesive layer (5) and a high-barrier material layer (6) from inside to outside;
the modified polypropylene layer (4) is made of modified polypropylene;
the hot melt adhesive layer (5) is made of hot melt adhesive;
the high-barrier material layer (6) is made of a high-barrier material;
the composite hollow glass warm edge spacing bar comprises the following raw materials in parts by weight:
modified polypropylene: 85-95 parts of a solvent;
hot melt adhesive: 2-5 parts;
high barrier material: 3-10 parts;
the modified polypropylene is glass fiber reinforced PP or glass fiber/filled reinforced PP;
the preparation method of the modified polypropylene comprises the following steps:
(1) uniformly mixing 48-84.5 parts of polypropylene, 0-20 parts of inorganic filler, 0-5 parts of compatilizer and 0.5-2 parts of other additives in a high-speed mixer;
(2) extruding and granulating through a double-screw extruder, and introducing 15-25 parts of glass fiber; the first section temperature of the double-screw extruder is 180-240 ℃, the second section temperature is 200-230 ℃, the third section temperature is 180-220 ℃, and the head temperature is 200-240 ℃;
in the step (1), the lower limit of the inorganic filler may be 0, and the lower limit of the compatibilizer may not be 0;
in the step (1), the polypropylene is selected from homopolymerized PP, copolymerized PP or the mixture of the homopolymerized PP and the copolymerized PP in different proportions;
in the step (1), the inorganic filler is one or more of calcium carbonate, talcum powder, kaolin, barium sulfate and glass beads;
in the step (1), the compatilizer is maleic anhydride grafted PP or glycidyl methacrylate grafted PP;
in the step (1), the other auxiliary agents are any one or more of silane coupling agents, lubricants and anti-aging agents;
in the step (2), the glass fiber is continuous glass fiber or chopped glass fiber, and the fiber diameter is 10-14 μm; the continuous glass fiber is fed from a fiber inlet of a double-screw extruder, and the chopped glass fiber is fed from a lateral feeding port of the double-screw extruder;
the hot melt adhesive is any one of maleic anhydride grafted PE, polyamide PA, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and ethylene-ethyl acrylate copolymer;
the high-barrier material is any one of ethylene-vinyl alcohol copolymer, polyketone, polyvinylidene chloride, polyethylene terephthalate and polyethylene naphthalate;
the preparation method of the composite type hollow glass warm edge spacing bar comprises the following steps: 85-95 parts of modified polypropylene, 2-5 parts of hot melt adhesive and 3-10 parts of high barrier material are respectively fed into multilayer coextrusion molding equipment according to parts by weight, the modified polypropylene is melted and plasticized at the temperature of 170-220 ℃, the hot melt adhesive is melted at the temperature of 100-190 ℃, and the high barrier material is extruded from a neck mold at the same time according to the set weight ratio to realize online compounding, so that the multilayer coextrusion composite hollow glass warm edge spacer strip is obtained.
2. A multilayer co-extrusion composite type hollow glass warm edge spacer as claimed in claim 1, wherein the upper frame body (1) has a rectangular cross section and the lower frame body (2) has a trapezoidal cross section.
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