CN109281564B - Anti-collision strip and preparation method and application thereof - Google Patents

Anti-collision strip and preparation method and application thereof Download PDF

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Publication number
CN109281564B
CN109281564B CN201811355410.2A CN201811355410A CN109281564B CN 109281564 B CN109281564 B CN 109281564B CN 201811355410 A CN201811355410 A CN 201811355410A CN 109281564 B CN109281564 B CN 109281564B
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polyvinyl chloride
bumper strip
arc
antioxidant
strip
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CN109281564A (en
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刘振宇
张元桂
曾庆景
陈彦勤
沈峰
朱振伟
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Sinowolf Plastic Dekor Co ltd
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Sinowolf Plastic Dekor Co ltd
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Vibration Dampers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention provides an anti-collision strip, a preparation method and application thereof, comprising a hard matrix, an arc body and a connector; the connecting body is respectively connected to the arc-shaped body and the hard matrix, a first cavity is formed between the connecting body and the arc-shaped body, and a second cavity is formed between the connecting body and the hard matrix. According to the anti-collision strip, the arc-shaped body and the connecting body are respectively connected with the arc-shaped body and the hard matrix, the connecting body forms the first cavity and the second cavity, when the arc-shaped body is extruded, the arc-shaped body and the connecting body are elastically deformed to play a role in slowing down vibration resistance, and the acting force generated when the anti-collision strip is extruded can be effectively buffered under the combined action of the first cavity and the second cavity, so that the anti-collision strip is protected, and the service life of the anti-collision strip is prolonged; in addition, the connecting body with the two cavities is stable in structure, the buffer distance of the anti-collision strip is increased, and the buffer performance of the anti-collision strip is improved.

Description

Anti-collision strip and preparation method and application thereof
Technical Field
The invention belongs to the technical field of anti-collision strips, and relates to an anti-collision strip and a preparation method and application thereof.
Background
The existing home decoration cabinet and door and window are provided with a push-pull type and a closing type, no matter the push-pull type cabinet and the closing type cabinet and the door and window are closed, an anti-collision strip is generally arranged between a door plate and a door frame when the cabinet and the door are used, the door plate can not make sound when being closed, and the door plate and the door frame are prevented from being directly damaged by long-term hard contact. The anti-collision strip generally comprises a hard claw and a rebound body, wherein the hard claw and the rebound body are used for being connected with an external object, the requirements of the hard claw and the rebound body on materials are different, the hard claw needs good hardness for stable connection performance, the rebound body needs good toughness and elasticity for good rebound performance, and materials with good hardness and good toughness and elasticity do not exist at present, so that the hard claw generally adopts hard polyvinyl chloride and other materials with good hardness, the rebound body generally adopts TPU and other materials with good elasticity to improve the elasticity of the anti-collision strip, and the cost is generally high; and there is the interface problem of stereoplasm jack catch and rebound body, if utilize the coextrusion technology shaping, probably need add certain compatilizer etc. to have further improved the cost of crashproof strip. Meanwhile, the common anti-collision strip is easy to lose elasticity in the repeated use process due to the structural characteristics of the anti-collision strip, so that the anti-collision purpose is lost, and the service life is short.
CN202341394U discloses a flexible crashproof strip, including at least one protection strip or by the crashproof strip body of at least one crashproof angle support, the cambered surface structure is personally submitted to crashproof body inboard, and this flexible crashproof strip relies on crashproof strip body self to warp and cushions, and buffer performance is relatively poor, and crashproof strip body loses the cushioning effect because of fatigue easily after long-time use moreover. CN201221262Y discloses a horizontal sliding door and window anti-collision bar with a cavity, which consists of an assembly part and an elastic shock absorber, wherein the assembly part is in an inverted T shape, the shock absorber is in a circular ring shape, and the shock absorber is connected with a connecting rod of the assembly part. When the shock absorber is extruded, deformation is generated, the cross-sectional area of the deformed shock absorber is larger than that of the connecting rod, the connecting rod cannot provide effective support for the shock absorber, the shock absorber is easy to bend towards one side of the connecting rod in the deformation process, the buffering performance is poor, and the shock absorber is easy to tear. CN201110080Y discloses a bumper strip for home decoration, including hard PVC bar-shaped plain noodles, two soft PVC semicircular curved noodles of integrated into one piece in hard PVC bar-shaped plain noodles one side, although this bumper strip can carry out certain buffering, but soft PVC's elasticity and toughness are relatively poor, and buffer performance is relatively poor, and in long-time use, soft PVC loses elasticity because of permanent deformation easily. CN108285593a discloses a formulation, a manufacturing process, a using method and application of a high-elasticity film, the components comprise polyvinyl chloride and liquid rubber, the weight parts of the polyvinyl chloride and the liquid rubber are respectively 80-120 and 2-8, the polymerization degree of the polyvinyl chloride is 1300-2100, and the finally obtained film still has better elasticity and elongation at break at low temperature, but is still accompanied with peculiar smell of plastics, is unsafe and environment-friendly, and cannot meet the application requirements. CN101361600a discloses a polyvinyl chloride high elastic glove and a manufacturing method thereof, comprising adding an elastomer in liquid form into polyvinyl chloride paste, adopting the following formula: 100 parts of polyvinyl chloride, 70-100 parts of plasticizer, 1.0-3.0 parts of stabilizer and 5-20 parts of elastomer (calculated by taking the weight parts of polyvinyl chloride as a base); the elastic polyvinyl chloride obtained finally has improved elastic performance, but is not environment-friendly and still has plastic smell.
Therefore, it is desirable to develop a new bumper strip with high elasticity, stable structure, and good elasticity and toughness of the material, and good cushioning properties, so as to meet the application requirements of the bumper strip.
Disclosure of Invention
The invention aims to provide a crash bar and a preparation method and application thereof.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a bumper strip, including a hard matrix, an arcuate body, and a connector, where the connector is connected to the arcuate body and the hard matrix, respectively, and a first cavity is formed between the connector and the arcuate body, and a second cavity is formed between the connector and the hard matrix.
According to the anti-collision strip, the arc-shaped body and the connecting body are respectively connected with the arc-shaped body and the hard matrix, the connecting body forms the first cavity and the second cavity, when the arc-shaped body is extruded, the arc-shaped body and the connecting body are elastically deformed to play a role in slowing down vibration resistance, and the acting force generated when the anti-collision strip is extruded can be effectively buffered under the combined action of the first cavity and the second cavity, so that the anti-collision strip is protected, and the service life of the anti-collision strip is prolonged; in addition, the connecting body with the two cavities is stable in structure, the buffer distance of the anti-collision strip is increased, and the buffer performance of the anti-collision strip is improved.
Preferably, the hard base is made of a hard polyvinyl chloride material, and the arc-shaped body and the connecting body are both made of a high-elasticity polyvinyl chloride material.
The hard matrix and the rebound body are both made of polyvinyl chloride materials, have no interface effect, can be well formed by using a coextrusion process, and compared with TPU materials, the polyvinyl chloride materials are low in price, so that the processing cost of the anti-collision strip can be greatly reduced.
Preferably, the high-elasticity polyvinyl chloride material comprises the following components in parts by weight:
according to the invention, the liquid rubber and the ACR resin are selected to jointly modify the polyvinyl chloride, and the toughness and elasticity of the polyvinyl chloride can be greatly improved by the synergistic effect of the liquid rubber and the ACR resin. When the polyvinyl chloride material is impacted or impacted, the liquid rubber elastomer particles play a role in stress concentration, induce the polyvinyl chloride matrix to generate a large number of shear bands and silver marks so as to consume impact energy, so that the impact strength of the material is improved, and meanwhile, the ACR resin particles play a role in stopping development of the silver marks and the shear bands, so that the ACR resin particles cannot develop into destructive cracks, and the polyvinyl chloride matrix is promoted to change from brittle to tough so as to improve the toughness and elasticity of the material.
Preferably, the polyvinyl chloride has a polymerization degree of 1900.
The polyvinyl chloride with the polymerization degree of 1900 is preferable, and has the advantages of higher rebound resilience, lower compression set, excellent heat-resistant deformation performance, higher tensile strength, excellent wear resistance, tear resistance, weather resistance, oil resistance, heat resistance, cold resistance, ozone resistance and the like.
Preferably, the liquid rubber is butadiene-styrene rubber.
Preferably, the nano calcium carbonate has a particle size of 0.06 μm.
The invention prefers the nano calcium carbonate with the grain diameter of 0.06 mu m, which can better improve the mechanical property and the adhesive force of the product and reduce the cost of the product.
Preferably, the plasticizer is diisononyl cyclohexane 1, 2-dicarboxylate.
Preferably, the lubricant comprises an inner lubricant and an outer lubricant.
Preferably, the internal lubricant is stearic acid.
Preferably, the external lubricant is polyethylene wax.
Preferably, the stabilizer is a calcium-zinc composite stabilizer.
Preferably, the ultraviolet light absorber comprises any one or a combination of at least two of phenyl salicylate, ultraviolet light absorber UVP, ultraviolet light absorber UV-O, ultraviolet light absorber UV-9, ultraviolet light absorber UV-531, ultraviolet light absorber UVP-327, ultraviolet light absorber RMB, light stabilizer AM-101, light stabilizer GW-540, light stabilizer 744, light stabilizer HPT, or 2,4, 6-tris (2 '-hydroxy-4' -n-butoxyphenyl) -1,3, 5-triazine.
Preferably, the antioxidant comprises any one or a combination of at least two of aromatic amine antioxidants, hindered phenol antioxidants or auxiliary antioxidants, and further preferably any one or a combination of at least two of antioxidants 1010, 1076, CA, 164, DNP, DLTP, TNP, TPP, MB or 264.
According to the invention, the components such as the liquid rubber, the ACR resin, the nano calcium carbonate, the plasticizer, the lubricant, the optional processing aid and the like are mutually matched, so that the finally obtained high-elasticity polyvinyl chloride composite material has the characteristics of excellent elasticity, good softness, no smell, safety, environmental friendliness, good wear resistance, tear resistance, weather resistance, oil resistance, heat resistance, cold resistance, ozone resistance and the like, and can meet the application requirements of the polyvinyl chloride anti-collision strip.
In the invention, the connector comprises a first part and a second part which are connected, wherein both ends of the first part are connected with the arc body to form the first cavity, and both ends of the second part are connected with the hard matrix to form the second cavity.
Preferably, the first portion includes two first sides, the two first sides are connected to form a first V-shaped structure, and an included angle of the first V-shaped structure is 150-160 °, for example 152 °, 153 °, 155 °, 156 °, 158 °, etc.
Preferably, the thickness of the first side edge is 0.90-1.0mm, e.g. 0.91mm, 0.92mm, 0.93mm, 0.95mm, 0.97mm, 0.99mm, etc.
Preferably, the length of the first side edge is 5.0-10.0mm, e.g. 6.0mm, 7.0mm, 8.0mm, 9.0mm, etc.
Preferably, the second portion comprises two second sides, the two second sides are connected to form a second V-shaped structure, and the included angle of the second V-shaped structure is 30-35 °, such as 31 °, 32 °, 33 °, 34 °, etc.
Preferably, the thickness of the second side edge is 0.90-1.0mm, e.g. 0.91mm, 0.92mm, 0.93mm, 0.95mm, 0.97mm, 0.99mm, etc.
Preferably, the length of the second side edge is 5.0-10.0mm, e.g. 6.0mm, 7.0mm, 8.0mm, 9.0mm, etc.
Preferably, the width and thickness of the rigid matrix are 10.0-15.0mm (e.g., 11.0mm, 12.0mm, 13.0mm, 14.0mm, etc.) and 1.0-2.0mm, respectively.
Preferably, the arc has an arc of 160-165 °, such as 161 °, 162 °, 163 °, 164 °, etc.
Preferably, the thickness of the arcuate body is 0.9-1.0mm, such as 0.91mm, 0.92mm, 0.93mm, 0.95mm, 0.97mm, 0.99mm, etc.
In a second aspect, the present invention provides a method for preparing a bumper strip according to the first aspect, the method comprising: and (3) co-extrusion molding the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material to obtain the anti-collision strip.
The invention adopts the coextrusion integrated molding technology, can save the production cost and is convenient to operate.
Preferably, in the coextrusion molding, the extrusion temperature of the rigid polyvinyl chloride material is 130 to 180 ℃, for example 140 ℃, 150 ℃, 160 ℃, 170 ℃, or the like.
Preferably, in the coextrusion molding, the extrusion temperature of the highly elastic polyvinyl chloride material is 140 to 170 ℃, for example 145 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃, or the like.
Preferably, the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material are dried and then co-extruded.
Preferably, the drying treatment is such that the moisture content of the rigid polyvinyl chloride material and the highly elastic polyvinyl chloride material is each independently 0.01 to 0.03%, for example 0.015%, 0.02%, 0.025%, etc.
In a third aspect, the present invention provides the use of a bumper strip according to the first aspect in a showcase or door window bumper strip.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the anti-collision strip, the arc-shaped body and the connecting body are respectively connected with the arc-shaped body and the hard matrix, the connecting body forms the first cavity and the second cavity, when the arc-shaped body is extruded, the arc-shaped body and the connecting body are elastically deformed to play a role in slowing down vibration resistance, and the acting force generated when the anti-collision strip is extruded can be effectively buffered under the combined action of the first cavity and the second cavity, so that the anti-collision strip is protected, and the service life of the anti-collision strip is prolonged; in addition, the arrangement of the connecting body with the two cavities has stable structure, increases the buffer distance of the anti-collision strip and improves the buffer performance of the anti-collision strip;
(2) The hard matrix and the rebound body are both made of polyvinyl chloride materials, have no interface effect, can be well formed by using a coextrusion process, and compared with TPU materials, the polyvinyl chloride materials are low in price, so that the processing cost of the anti-collision strip can be greatly reduced;
(3) The high-elasticity polyvinyl chloride material provided by the invention has the characteristics of excellent elasticity, good softness, no smell, safety, environmental protection, good wear resistance, tear resistance, weather resistance, oil resistance, heat resistance, cold resistance, ozone resistance and the like, and can meet the application requirements of the polyvinyl chloride anti-collision strip.
Drawings
Fig. 1 is a transverse cross-sectional view of a bumper strip in accordance with an embodiment of the present invention.
Fig. 2 is a transverse cross-sectional view of a bumper strip in accordance with a second embodiment of the present invention.
Wherein, 1-a hard matrix; 2-arc body; a 3-linker; 31-a first side; 32-a second side; 41-a first cavity; 42-second cavity.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Example 1
A crash bar, as shown in figure 1, consists of a hard base body 1, an arc-shaped body 2 and a connecting body 3.
Wherein, the connecting body 3 is respectively connected to the arc-shaped body 2 and the hard matrix 1, and a first cavity 41 and a second cavity 42 are formed between the connecting body 3 and the arc-shaped body 2 and the hard matrix 1 respectively.
Wherein the width and the thickness of the hard matrix 1 are respectively 10mm and 1mm; the arc body radian is 160 degrees and the thickness is 0.9mm.
Wherein, the connecting body 3 comprises a first part and a second part which are connected, both ends of the first part are connected with the arc-shaped body 2 to form a first cavity 41, both ends of the second part are connected with the hard matrix 1 to form a second cavity 42; the first part comprises two first side edges 31, the two first side edges 31 form a first V-shaped structure, the included angle alpha of the first V-shaped structure is 160 degrees, the length of the first side edge is 5mm, and the thickness of the first side edge is 0.9mm; the second part comprises two second side edges 32 which form a second V-shaped structure, and the included angle beta of the second V-shaped structure is 30 degrees; the second side edge has a length of 5mm and a thickness of 0.9mm.
Wherein, the hard matrix 1 is made of hard polyvinyl chloride material, the arc body 2 and the connector 3 are made of high-elasticity polyvinyl chloride material, and the high-elasticity polyvinyl chloride material comprises the following components in parts by weight:
wherein the polymerization degree of polyvinyl chloride is 1900, the liquid rubber is butadiene-styrene-butadiene rubber, the particle size of nano calcium carbonate is 0.06 mu m, the plasticizer is cyclohexane 1, 2-diisononyl diformate, the inner lubricant is stearic acid, the outer lubricant is polyethylene wax, the stabilizer is calcium zinc composite stabilizer, the ultraviolet absorber is phenyl salicylate, the antioxidant is antioxidant 1010, and the pigment is ultramarine blue.
The preparation method of the anti-collision strip comprises the following steps:
the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material are firstly dried respectively to ensure that the water content of the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material is within the range of 0.01-0.03%, and then the anti-collision strip is obtained through coextrusion molding.
Wherein the extrusion temperature of the rigid polyvinyl chloride material is 170 ℃; the extrusion temperature of the highly elastic polyvinyl chloride material was 160 ℃.
Example 2
A crash bar, as shown in figure 2, consists of a hard base body 1, an arc-shaped body 2 and a connecting body 3.
Wherein, the connecting body 3 is respectively connected to the arc-shaped body 2 and the hard matrix 1, and a first cavity 41 and a second cavity 42 are formed between the connecting body 3 and the arc-shaped body 2 and the hard matrix 1 respectively.
Wherein the width and the thickness of the hard matrix 1 are respectively 15mm and 2mm; the arc degree of the arc body is 165 degrees, and the thickness is 1.0mm.
Wherein, the connecting body 3 comprises a first part and a second part which are connected, both ends of the first part are connected with the arc-shaped body 2 to form a first cavity 41, both ends of the second part are connected with the hard matrix 1 to form a second cavity 42; the first part comprises two first side edges 31, the two first side edges 31 form a first V-shaped structure, the included angle alpha of the first V-shaped structure is 150 degrees, the length of the first side edge is 8mm, and the thickness of the first side edge is 0.95mm; the second portion comprises two second sides 32 forming a semi-circular ring-shaped structure, the thickness of the second sides being 0.95. 0.95mm.
Wherein, the hard matrix 1 is made of hard polyvinyl chloride material, the arc body 2 and the connector 3 are made of high-elasticity polyvinyl chloride material, and the high-elasticity polyvinyl chloride material comprises the following components in parts by weight:
wherein the polymerization degree of polyvinyl chloride is 1900, the liquid rubber is butadiene-styrene-butadiene rubber, the particle size of nano calcium carbonate is 0.06 mu m, the plasticizer is cyclohexane 1, 2-diisononyl phthalate, the inner lubricant is stearic acid, the outer lubricant is polyethylene wax, the stabilizer is a calcium-zinc composite stabilizer, the ultraviolet absorber is ultraviolet absorber UV-9, the antioxidant is antioxidant 164, and the pigment is ultramarine blue.
The preparation method of the anti-collision strip comprises the following steps:
the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material are firstly dried respectively to ensure that the water content of the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material is within the range of 0.01-0.03%, and then the anti-collision strip is obtained through coextrusion molding.
Wherein the extrusion temperature of the rigid polyvinyl chloride material is 165 ℃; the extrusion temperature of the highly elastic polyvinyl chloride material was 160 ℃.
Example 3
A crash bar is composed of a hard base body 1, an arc-shaped body 2 and a connecting body 3.
Wherein, the connecting body 3 is respectively connected to the arc-shaped body 2 and the hard matrix 1, and a first cavity 41 and a second cavity 42 are formed between the connecting body 3 and the arc-shaped body 2 and the hard matrix 1 respectively.
Wherein the width and the thickness of the hard matrix 1 are respectively 12mm and 1.5mm; the arc degree of the arc body is 162 degrees, and the thickness is 0.95mm.
Wherein, the connecting body 3 comprises a first part and a second part which are connected, both ends of the first part are connected with the arc-shaped body 2 to form a first cavity 41, both ends of the second part are connected with the hard matrix 1 to form a second cavity 42; the first part comprises two first side edges 31, the two first side edges 31 form a first V-shaped structure, the included angle alpha of the first V-shaped structure is 155 degrees, the length of the first side edge is 10mm, and the thickness of the first side edge is 1.0mm; the second part comprises two second side edges 32 which form a second V-shaped structure, and the included angle beta of the second V-shaped structure is 35 degrees; the second side edge has a length of 10mm and a thickness of 1.0mm.
Wherein the hard base 1 is made of a hard polyvinyl chloride material, the arc body 2 and the connecting body 3 are both made of the same high-elasticity polyvinyl chloride material as in example 1,
the preparation method of the anti-collision strip comprises the following steps:
the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material are firstly dried respectively to ensure that the water content of the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material is within the range of 0.01-0.03%, and then the anti-collision strip is obtained through coextrusion molding.
Wherein the extrusion temperature of the rigid polyvinyl chloride material is 180 ℃; the extrusion temperature of the highly elastic polyvinyl chloride material was 140 ℃.
Comparative example 1
CN 201221262Y.
Comparative example 2
The hard polyvinyl chloride and the high-elasticity polyvinyl chloride provided by the invention are adopted to prepare the crash bar provided by CN 201221262Y.
Comparative example 3
The only difference from example 1 is that the highly elastic polyvinyl chloride material was replaced with a common commercially available TPU material (95A-60D in south Asia of Taiwan, china).
Comparative example 4
The only difference from example 1 is that the highly elastic polyvinyl chloride material was replaced with a common commercially available soft polyvinyl chloride (Tosoh PVC TG-1000 modified soft material).
Performance testing
Performance tests were performed on the impact strips provided in examples 1-3 and comparative examples 1-4 as follows:
(1) Shore hardness: testing was performed using a Shore durometer according to the GB/T531.1-2008 standard;
(2) Heat shrinkage rate: taking a sample of about 32cm, accurately measuring 30cm, marking by scribing, putting the sample into a constant temperature drying oven, drying at 60 ℃ for 1h, taking out the length of a measuring marking line, and then calculating the heat shrinkage rate;
(3) Rebound rate: fixing the hard matrix 1 horizontally, vertically acting on the elastic arch part by using a weight of 100Kg, keeping for 100 hours, removing the weight, testing the rebound height of the elastic arch part after 2s, and calculating the rebound rate;
(4) Service life is as follows: the anti-collision strip is placed on an elastic body life tester, is horizontally fixed, is pressed on an elastic arch part by a 2KG weight, is lifted after 3s, is continuously pressed after 2s, is repeatedly tested for 100000 times in a reciprocating way, and is used for observing the appearance condition of a sample, such as structural deformation, surface crack or breakage, and the like.
The test results are shown in Table 1;
TABLE 1
According to the embodiment and the performance test, the anti-collision strip provided by the invention has good anti-collision and impact-relieving effects, and is low in processing cost and long in service life. As can be seen from the comparison of the example 1 and the comparative examples 1-2, the use of the bumper strip with the structure of the present invention can well prolong the service life of the bumper strip, and the comparison of the example 1 and the comparative example 3 shows that the use of the highly elastic polyvinyl chloride material provided by the present invention for preparing the bumper strip has better use effect and longer service life. As can be seen from the comparison of the example 1 and the comparative example 4, the anti-collision strip prepared by the high-elasticity polyvinyl chloride material provided by the invention has better rebound rate.
The applicant states that the present invention has been described by way of the above examples as well as a method of making and using the same, but the invention is not limited to, i.e. does not necessarily have to rely on, the above process steps to practice the invention. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of selected raw materials, addition of auxiliary components, selection of specific modes, etc. fall within the scope of the present invention and the scope of disclosure.

Claims (26)

1. The anti-collision strip is characterized by comprising a hard base body (1), an arc-shaped body (2) and a connecting body (3);
the connecting body (3) is respectively connected with the arc-shaped body (2) and the hard matrix (1), a first cavity (41) is formed between the connecting body (3) and the arc-shaped body (2), and a second cavity (42) is formed between the connecting body (3) and the hard matrix (1);
the connecting body (3) comprises a first part and a second part which are connected, both ends of the first part are connected with the arc-shaped body (2) to form a first cavity (41), and both ends of the second part are connected with the hard matrix (1) to form a second cavity (42);
the first part comprises two first side edges (31), the two first side edges (31) are connected to form a first V-shaped structure, and the included angle of the first V-shaped structure is 150-160 degrees;
the second part comprises two second side edges (32), the two second side edges (32) are connected to form a second V-shaped structure, and the included angle of the second V-shaped structure is 30-35 degrees;
the hard base body (1) is made of a hard polyvinyl chloride material, and the arc-shaped body (2) and the connecting body (3) are both made of a high-elasticity polyvinyl chloride material.
2. The bumper strip of claim 1, wherein the highly elastic polyvinyl chloride material comprises the following components in parts by weight:
3. the bumper strip of claim 2, wherein the polyvinyl chloride has a degree of polymerization of 1900.
4. The bumper strip of claim 2, wherein the liquid rubber is butadiene-styrene rubber.
5. The bumper strip of claim 2, wherein the nano calcium carbonate has a particle size of 0.06 μm.
6. The bumper strip of claim 2, wherein the plasticizer is diisononyl cyclohexane 1, 2-dicarboxylate.
7. The bumper strip of claim 2, wherein the lubricant comprises an inner lubricant and an outer lubricant.
8. The bumper strip of claim 7, wherein the internal lubricant is stearic acid.
9. The bumper strip of claim 7, wherein the outer lubricant is polyethylene wax.
10. The bumper strip of claim 2, wherein the stabilizer is a calcium zinc composite stabilizer.
11. The bumper strip of claim 2, wherein the ultraviolet light absorber comprises any one or a combination of at least two of phenyl salicylate, ultraviolet light absorber UVP, ultraviolet light absorber UV-O, ultraviolet light absorber UV-9, ultraviolet light absorber UV-531, ultraviolet light absorber UVP-327, ultraviolet light absorber RMB, light stabilizer AM-101, light stabilizer GW-540, light stabilizer 744, light stabilizer HPT, or 2,4, 6-tris (2 '-hydroxy-4' -n-butoxyphenyl) -1,3, 5-triazine.
12. The bumper strip of claim 2, wherein the antioxidant comprises any one or a combination of at least two of an aromatic amine antioxidant, a hindered phenol antioxidant, or a secondary antioxidant.
13. The bumper strip of claim 12, wherein the antioxidant comprises any one or a combination of at least two of antioxidant 1010, antioxidant 1076, antioxidant CA, antioxidant 164, antioxidant DNP, antioxidant DLTP, antioxidant TNP, antioxidant TPP, antioxidant MB, or antioxidant 264.
14. The bumper strip of claim 1, wherein the first side edge (31) has a thickness of 0.90-1.0mm.
15. The bumper strip of claim 1, wherein the first side edge (31) has a length of 5.0-10.0mm.
16. The bumper strip of claim 1, wherein the second side edge (32) has a thickness of 0.90-1.0mm.
17. The bumper strip of claim 1, wherein the second side edge (32) has a length of 5.0-10.0mm.
18. The bumper strip according to claim 1, characterized in that the width and thickness of the rigid matrix (1) are 10.0-15.0mm and 1.0-2.0mm, respectively.
19. The bumper strip according to claim 1, characterized in that the arc of the arc-shaped body (2) is 160-165 °.
20. The bumper strip of claim 1, wherein the arcuate body has a thickness of 0.9-1.0mm.
21. The method of manufacturing a bumper strip of any of claims 1-20, comprising: and (3) co-extrusion molding the hard polyvinyl chloride material and the high-elasticity polyvinyl chloride material to obtain the anti-collision strip.
22. The method according to claim 21, wherein in the coextrusion molding, the extrusion temperature of the rigid polyvinyl chloride material is 130 to 180 ℃.
23. The method according to claim 21, wherein in the coextrusion molding, the extrusion temperature of the highly elastic polyvinyl chloride material is 140 to 170 ℃.
24. The method according to claim 21, wherein the hard polyvinyl chloride material and the highly elastic polyvinyl chloride material are dried and then co-extruded, respectively.
25. The method according to claim 24, wherein the drying treatment is such that the water content of the hard polyvinyl chloride material and the highly elastic polyvinyl chloride material is each independently 0.01 to 0.03%.
26. Use of the bumper strip according to any one of claims 1-20 in a showcase or a window bumper strip.
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CN109989653A (en) * 2019-04-28 2019-07-09 志邦家居股份有限公司 A kind of detachable anticollision strip and the doorframe using detachable anticollision strip

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