CN106380766A - A surface plastic material used for processing a running belt of a treadmill - Google Patents
A surface plastic material used for processing a running belt of a treadmill Download PDFInfo
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- CN106380766A CN106380766A CN201610693334.0A CN201610693334A CN106380766A CN 106380766 A CN106380766 A CN 106380766A CN 201610693334 A CN201610693334 A CN 201610693334A CN 106380766 A CN106380766 A CN 106380766A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/10—Homopolymers or copolymers of unsaturated ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a surface plastic material used for processing a running belt of a treadmill, and relates to the technical field of fitness equipment processing. The surface plastic material is prepared from, by weight, 15-20 parts of fluoroether rubber, 10-15 parts of fluorocarbon resin, 10-15 parts of chlorosulfonated polyethylene, 8-12 parts of polyoxyethylene, 6-11 parts of hydrophobic precipitated silica, 5-9 parts of volcanic ash, 4-8 parts of microcrystalline wax, 4-8 parts of pentaerythritol stearate, 3-6 parts of asbestos wool, 3-6 parts of a wear-resistant flexibilizer, 2-4 parts of triallyl cyanurate, 2-4 parts of polyacrylamide, 1-2 parts of lignocellulose, 1-2 parts of emulsified silicone oil, 0.5-1 part of potassium pyrophosphate and 0.5-1 part of glass fiber powder. The surface plastic material is good in processing moldability. When the surface plastic material is used for covering a running belt substrate material, feet feel comfort and friction resistance is proper. The surface plastic material has excellent wear resistance, corrosion resistance, waterproofness, high-temperature resistance and weather fastness, effectively improves using performance of the running belt and greatly prolongs the service lifetime of the running belt.
Description
Technical field：
The present invention relates to body-building apparatus processing technique field uses top layer plastic cement material and in particular to a kind of running belt of running machine is processed
Material.
Background technology：
Treadmill enters average family more and more widely, becomes majority and wants motion, wants health but do not have
The excessive time does the optimum selection of outdoor activities crowd.Run be almost everyone have an instinct for can the simplest but most effective
Motion mode, accepted by most people.So treadmill in addition to motor, control program, treadbelt be also one very heavy
The part wanted.
Treadbelt top layer is typically made using plastic material, has multiple decorative patterns it is therefore an objective to allow concave-convex sense to increase frictional force, allows
Sporter is not easy to tumble during running.In addition, the wearability of treadbelt skin-material is impact serviceability and makes
With the key factor in life-span it is therefore desirable to take into account wearability while ensureing frictional resistance.And the treadbelt table being used at present
Layer rapidoprint typically increases frictional resistance by surface detail, once decorative pattern is worn will affect feel, thus shortening
The service life of treadbelt.
Content of the invention：
The technical problem to be solved is to provide a kind of comfortable foot feeling, frictional resistance moderate and has excellent resistance to
Top layer plastic material is used in the running belt of running machine processing of mill property, corrosion resistance, resistance to water, heat-resisting quantity and weatherability.
The technical problem to be solved to be realized using following technical scheme：
Top layer plastic material is used in a kind of running belt of running machine processing, is made up of the raw material of following parts by weight：
Perfluoroelastomers 15-20 part, fluorocarbon resin 10-15 part, chlorosulfonated polyethylene 10-15 part, polyethylene glycol oxide 8-12
Part, hydrophobic precipitated silicon dioxide 6-11 part, volcanic ash 5-9 part, microwax 4-8 part, stearic acid pentaerythritol ester 4-8 part, asbestos
Floss 3-6 part, wear-resisting toughener 3-6 part, triallyl cyanurate 2-4 part, polyacrylamide 2-4 part, lignocellulose 1-2
Part, emulsified silicone oil 1-2 part, potassium pyrophosphate 0.5-1 part, glass powder 0.5-1 part；
Its preparation method comprises the steps：
(1) add chlorosulfonated polyethylene and stearic acid pentaerythritol ester in perfluoroelastomers, and be heated to 105-110 DEG C
Insulation mixing 10min, adds asbestos wool and triallyl cyanurate, continues to be heated to 125-130 DEG C of insulation mixing 5min,
Obtain final product material I；
(2) add polyethylene glycol oxide in fluorocarbon resin, and be heated to 120-125 DEG C of sealed thermal insulating mixing 10min, then
Add wear-resisting toughener and emulsified silicone oil, sealed thermal insulating mixing 10min at continuing at 120-125 DEG C, obtain final product material II；
(3) material II, hydrophobic precipitated silicon dioxide, volcanic ash and glass powder, ground and mixed are added while hot in material I
10min, adds microwax, polyacrylamide, lignocellulose and potassium pyrophosphate, mix homogeneously is after microwave frequency
Microwave treatment 5min under 2450MHz, power 700W, gained mixture is naturally cooled to room temperature after terminating by process.
Described wear-resisting toughener is made up of the raw material of following parts by weight：Melamine resin 6-10 part, methyl-etherified
Amino resins 5-8 part, polyvinyl butyral resin 4-6 part, petroleum coke super fine 3-5 part, hydrogenated rosin glyceride 2-4 part, alkene
Propyl glycidyl ether 2-4 part, rapeseed cake 1-2 part, ceramic fibre powder 1-2 part, sulfurized lard 1-2 part, Semen Camelliae powder 0.5-1
Part, organo-silicon coupling agent 0.5-1 part, n-butyl alcohol 20-25 part, its preparation method is：Melamino-formaldehyde is added in n-butyl alcohol
Resin and petroleum coke super fine, are heated to reflux state insulation 15min, add Amino resin, poly- second under stirring
Enol butyral and allyl glycidyl ether, are sufficiently mixed microwave treatment under microwave frequency 2450MHz, power 700W
5min, is subsequently adding hydrogenated rosin glyceride, sulfurized lard and organo-silicon coupling agent, continues microwave treatment after mix homogeneously
5min, processed material is lowered the temperature, after temperature is down to 60-70 DEG C after terminating under ice-water bath by microwave treatment with the speed of 10 DEG C/min
Standing insulation 30min, is subsequently added rapeseed cake, ceramic fibre powder and Semen Camelliae powder, and stirring is lower to be continued with the speed of 10 DEG C/min
Cooling, adds gained mixture in ball mill after temperature is down to 20-30 DEG C, is milled to fineness and is less than 10 μm.
Using front through pretreatment, its processing method is described rapeseed cake：First 20-25 part rapeseed cake powder being broken into granularity is
The coarse grain of 1-2mm, adds equivalent ethanol, and stirring makes it be uniformly dispersed, and filters after standing 1h, adds 1-2 in gained filter cake
Part Polyethylene Glycol Oleate, 1-2 part spermol and 0.5-1 part rice chaff ash, are then heated to 50-55 DEG C of insulation mixing 10min, institute
Obtain mixture to dry at 75-80 DEG C, send into gained solid in ball mill after abundant drying, be milled to fineness and be less than 30 μ
m.
The invention has the beneficial effects as follows：The present invention, with perfluoroelastomers and fluorocarbon resin as primary raw material, is aided with multiple helping
Agent is obtained running belt of running machine processing and uses top layer plastic material, and the processing forming of this plastic material is good, for covering in treadbelt base
On layer material, comfortable foot feeling and frictional resistance is moderate, there is excellent wearability, corrosion resistance, resistance to water, heat-resisting quantity simultaneously
And weatherability, the serviceability effectively improving treadbelt and the service life greatly prolonging treadbelt.
Specific embodiment：
In order that technological means, creation characteristic, reached purpose and effect that the present invention realizes are easy to understand, tie below
Close specific embodiment, the present invention is expanded on further.
Embodiment 1
(1) add 10 parts of chlorosulfonated polyethylenes and 5 parts of stearic acid pentaerythritol esters in 15 parts of perfluoroelastomers, and heat
To 105-110 DEG C of insulation mixing 10min, add 3 parts of asbestos wools and 2 parts of triallyl cyanurate, continue to be heated to 125-
130 DEG C of insulation mixing 5min, obtain final product material I；
(2) add 8 parts of polyethylene glycol oxides in 15 parts of fluorocarbon resins, and be heated to 120-125 DEG C of sealed thermal insulating mixing
10min, is subsequently adding 3 parts of wear-resisting toughener and 1 part of emulsified silicone oil, sealed thermal insulating mixing 10min at continuing at 120-125 DEG C,
Obtain final product material II；
(3) material II, 6 parts of hydrophobic precipitated silicon dioxides, 6 parts of volcanic ash and 0.5 part of glass are added while hot in material I
Powder, ground and mixed 10min, add 4 parts of microwaxes, 2 parts of polyacrylamides, 1 part of lignocellulose and 0.5 part of potassium pyrophosphate,
Mix homogeneously microwave treatment 5min under microwave frequency 2450MHz, power 700W, process is natural by gained mixture after terminating
It is cooled to room temperature.
The preparation of wear-resisting toughener：Add 8 parts of melamine resins and 3 parts of petroleum cokes ultra-fine in 20 parts of n-butyl alcohol
Micropowder, is heated to reflux state insulation 15min, adds 5 parts of Amino resins, 4 parts of polyvinyl butyral resins under stirring
With 2 parts of allyl glycidyl ethers, it is sufficiently mixed microwave treatment 5min under microwave frequency 2450MHz, power 700W, then
Add 2 parts of hydrogenated rosin glycerides, 1 part of sulfurized lard and 0.5 part of organo-silicon coupling agent, after mix homogeneously, continue microwave treatment
5min, processed material is lowered the temperature, after temperature is down to 60-70 DEG C after terminating under ice-water bath by microwave treatment with the speed of 10 DEG C/min
Standing insulation 30min, is subsequently added 2 parts of rapeseed cakes, 1 part of ceramic fibre powder and 0.5 part of Semen Camelliae powder, and stirring is lower to be continued with 10
DEG C/cooling of the speed of min, after temperature is down to 20-30 DEG C, gained mixture is added in ball mill, be milled to fineness and be less than 10
μm.
The pretreatment of rapeseed cake：First 20 parts of rapeseed cake powder are broken into the coarse grain that granularity is 1-2mm, add equivalent ethanol,
Stirring so that it is uniformly dispersed, standing 1h after filter, in gained filter cake add 1 part of Polyethylene Glycol Oleate, 1 part of spermol and
0.5 part of rice chaff ash, is then heated to 50-55 DEG C of insulation mixing 10min, gained mixture is dried at 75-80 DEG C, dries through abundant
After dry, gained solid is sent in ball mill, be milled to fineness and be less than 30 μm.
Embodiment 2
(1) add 10 parts of chlorosulfonated polyethylenes and 5 parts of stearic acid pentaerythritol esters in 20 parts of perfluoroelastomers, and heat
To 105-110 DEG C of insulation mixing 10min, add 3 parts of asbestos wools and 3 parts of triallyl cyanurate, continue to be heated to 125-
130 DEG C of insulation mixing 5min, obtain final product material I；
(2) add 8 parts of polyethylene glycol oxides in 12 parts of fluorocarbon resins, and be heated to 120-125 DEG C of sealed thermal insulating mixing
10min, is subsequently adding 4 parts of wear-resisting toughener and 1 part of emulsified silicone oil, sealed thermal insulating mixing 10min at continuing at 120-125 DEG C,
Obtain final product material II；
(3) material II, 8 parts of hydrophobic precipitated silicon dioxides, 5 parts of volcanic ash and 1 part of glass powder are added in material I while hot,
Ground and mixed 10min, adds 5 parts of microwaxes, 2 parts of polyacrylamides, 2 parts of lignocellulose and 1 part of potassium pyrophosphate, and mixing is all
Even microwave treatment 5min under microwave frequency 2450MHz, power 700W, gained mixture is naturally cooled to after terminating by process
Room temperature.
The preparation of wear-resisting toughener：Add 6 parts of melamine resins and 3 parts of petroleum cokes ultra-fine in 20 parts of n-butyl alcohol
Micropowder, is heated to reflux state insulation 15min, adds 7 parts of Amino resins, 4 parts of polyvinyl butyral resins under stirring
With 2 parts of allyl glycidyl ethers, it is sufficiently mixed microwave treatment 5min under microwave frequency 2450MHz, power 700W, then
Add 3 parts of hydrogenated rosin glycerides, 2 parts of sulfurized lard and 0.5 part of organo-silicon coupling agent, after mix homogeneously, continue microwave treatment
5min, processed material is lowered the temperature, after temperature is down to 60-70 DEG C after terminating under ice-water bath by microwave treatment with the speed of 10 DEG C/min
Standing insulation 30min, is subsequently added 2 parts of rapeseed cakes, 2 parts of ceramic fibre powder and 0.5 part of Semen Camelliae powder, and stirring is lower to be continued with 10
DEG C/cooling of the speed of min, after temperature is down to 20-30 DEG C, gained mixture is added in ball mill, be milled to fineness and be less than 10
μm.
The pretreatment of rapeseed cake：First 25 parts of rapeseed cake powder are broken into the coarse grain that granularity is 1-2mm, add equivalent ethanol,
Stirring so that it is uniformly dispersed, standing 1h after filter, in gained filter cake add 2 parts of Polyethylene Glycol Oleates, 1 part of spermol and
0.5 part of rice chaff ash, is then heated to 50-55 DEG C of insulation mixing 10min, gained mixture is dried at 75-80 DEG C, dries through abundant
After dry, gained solid is sent in ball mill, be milled to fineness and be less than 30 μm.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (3)
1. a kind of running belt of running machine processing with top layer plastic material it is characterised in that being made up of the raw material of following parts by weight：
Perfluoroelastomers 15-20 part, fluorocarbon resin 10-15 part, chlorosulfonated polyethylene 10-15 part, polyethylene glycol oxide 8-12 part, dredge
Water precipitation silicon dioxide 6-11 part, volcanic ash 5-9 part, microwax 4-8 part, stearic acid pentaerythritol ester 4-8 part, asbestos wool 3-6
Part, wear-resisting toughener 3-6 part, triallyl cyanurate 2-4 part, polyacrylamide 2-4 part, lignocellulose 1-2 part, emulsifying
Silicone oil 1-2 part, potassium pyrophosphate 0.5-1 part, glass powder 0.5-1 part；
Its preparation method comprises the steps：
(1) add chlorosulfonated polyethylene and stearic acid pentaerythritol ester in perfluoroelastomers, and be heated to 105-110 DEG C of insulation
Mixing 10min, adds asbestos wool and triallyl cyanurate, continues to be heated to 125-130 DEG C of insulation mixing 5min, obtains final product
Material I；
(2) add polyethylene glycol oxide in fluorocarbon resin, and be heated to 120-125 DEG C of sealed thermal insulating mixing 10min, be subsequently adding
Wear-resisting toughener and emulsified silicone oil, sealed thermal insulating mixing 10min at continuing at 120-125 DEG C, obtain final product material II；
(3) material II, hydrophobic precipitated silicon dioxide, volcanic ash and glass powder are added while hot in material I, ground and mixed 10min,
Add microwax, polyacrylamide, lignocellulose and potassium pyrophosphate, mix homogeneously is after microwave frequency 2450MHz, power
Microwave treatment 5min under 700W, gained mixture is naturally cooled to room temperature after terminating by process.
2. running belt of running machine according to claim 1 processing with top layer plastic material it is characterised in that described wear-resisting toughness reinforcing
Agent is made up of the raw material of following parts by weight：Melamine resin 6-10 part, Amino resin 5-8 part, polyethylene
Butyral 4-6 part, petroleum coke super fine 3-5 part, hydrogenated rosin glyceride 2-4 part, allyl glycidyl ether 2-4 part,
Rapeseed cake 1-2 part, ceramic fibre powder 1-2 part, sulfurized lard 1-2 part, Semen Camelliae powder 0.5-1 part, organo-silicon coupling agent 0.5-1
Part, n-butyl alcohol 20-25 part, its preparation method is：Add melamine resin and petroleum coke super fine in n-butyl alcohol,
It is heated to reflux state insulation 15min under stirring, add Amino resin, polyvinyl butyral resin and allyl glycidyl
Glycerin ether, is sufficiently mixed microwave treatment 5min under microwave frequency 2450MHz, power 700W, is subsequently adding hydrogenated rosin sweet
Grease, sulfurized lard and organo-silicon coupling agent, continue microwave treatment 5min after mix homogeneously, microwave treatment terminate after by processed material
Lowered the temperature with the speed of 10 DEG C/min under ice-water bath, after temperature is down to 60-70 DEG C, standing insulation 30min, is subsequently added Semen Allii Tuberosi
Cake, ceramic fibre powder and Semen Camelliae powder, the lower speed cooling continuing with 10 DEG C/min of stirring, will after temperature is down to 20-30 DEG C
Gained mixture adds in ball mill, is milled to fineness and is less than 10 μm.
3. running belt of running machine according to claim 2 processing with top layer plastic material it is characterised in that：Described rapeseed cake makes
With front through pretreatment, its processing method is：First 20-25 part rapeseed cake powder is broken into the coarse grain that granularity is 1-2mm, adds
Amount ethanol, stirring makes it be uniformly dispersed, and filters after standing 1h, adds 1-2 part Polyethylene Glycol Oleate, 1-2 in gained filter cake
Part spermol and 0.5-1 part rice chaff ash, are then heated to 50-55 DEG C of insulation mixing 10min, gained mixture is at 75-80 DEG C
Dry, send into gained solid in ball mill after abundant drying, be milled to fineness and be less than 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693334.0A CN106380766A (en) | 2016-08-20 | 2016-08-20 | A surface plastic material used for processing a running belt of a treadmill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693334.0A CN106380766A (en) | 2016-08-20 | 2016-08-20 | A surface plastic material used for processing a running belt of a treadmill |
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| Publication Number | Publication Date |
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| CN106380766A true CN106380766A (en) | 2017-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610693334.0A Pending CN106380766A (en) | 2016-08-20 | 2016-08-20 | A surface plastic material used for processing a running belt of a treadmill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893415A (en) * | 2017-03-13 | 2017-06-27 | 罗碧贤 | A kind of outdoor exercises functional clothing processing waterproof and breathable coating |
| CN108341625A (en) * | 2018-03-26 | 2018-07-31 | 江兵 | A kind of fluid media (medium) conveying pipe insulation material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892963A (en) * | 2014-03-04 | 2015-09-09 | 住友橡胶工业株式会社 | Fluororubber molded product and method for manufacturing same |
-
2016
- 2016-08-20 CN CN201610693334.0A patent/CN106380766A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892963A (en) * | 2014-03-04 | 2015-09-09 | 住友橡胶工业株式会社 | Fluororubber molded product and method for manufacturing same |
Non-Patent Citations (1)
| Title |
|---|
| 左禹等: "《工程材料及其耐蚀性》", 31 August 2008 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893415A (en) * | 2017-03-13 | 2017-06-27 | 罗碧贤 | A kind of outdoor exercises functional clothing processing waterproof and breathable coating |
| CN108341625A (en) * | 2018-03-26 | 2018-07-31 | 江兵 | A kind of fluid media (medium) conveying pipe insulation material |
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Application publication date: 20170208 |
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