CN115449141A - Wear-resistant and slip-resistant TPO waterproof coiled material and preparation method thereof - Google Patents

Wear-resistant and slip-resistant TPO waterproof coiled material and preparation method thereof Download PDF

Info

Publication number
CN115449141A
CN115449141A CN202211233815.5A CN202211233815A CN115449141A CN 115449141 A CN115449141 A CN 115449141A CN 202211233815 A CN202211233815 A CN 202211233815A CN 115449141 A CN115449141 A CN 115449141A
Authority
CN
China
Prior art keywords
resistant
tpo
slip
abrasion
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202211233815.5A
Other languages
Chinese (zh)
Other versions
CN115449141B (en
Inventor
朱庆玉
沈梦婷
王仁杰
单永胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Kailun Polymer New Material Technology Co ltd
Original Assignee
Suzhou Kailun Polymer New Material Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Kailun Polymer New Material Technology Co ltd filed Critical Suzhou Kailun Polymer New Material Technology Co ltd
Priority to CN202211233815.5A priority Critical patent/CN115449141B/en
Publication of CN115449141A publication Critical patent/CN115449141A/en
Priority to PCT/CN2023/105061 priority patent/WO2024078055A1/en
Application granted granted Critical
Publication of CN115449141B publication Critical patent/CN115449141B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C08L53/025Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
    • 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
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/04Polymer mixtures characterised by other features containing interpenetrating networks
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]

Landscapes

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

Abstract

The invention discloses a wear-resistant anti-slip TPO waterproof coiled material which comprises the following components in parts by mass: 20 to 50 portions of PP, 20 to 80 portions of TPO elastomer, 5 to 50 portions of SEBS, 5 to 20 portions of titanium dioxide, 0.3 to 1.5 portions of light stabilizer and 0.1 to 0.8 portion of antioxidant. The invention also provides a preparation method of the wear-resistant anti-slip TPO waterproof coiled material. The TPO waterproof coiled material has the advantages of good static friction coefficient, good slip resistance, good wear resistance, good weldability, good low temperature resistance and high temperature resistance, and is very suitable for the photovoltaic roof of people.

Description

Wear-resistant and slip-resistant TPO waterproof coiled material and preparation method thereof
Technical Field
The invention relates to a wear-resistant anti-slip TPO waterproof coiled material and a preparation method thereof.
Background
With the rise of distributed photovoltaic construction, the service life of a roof is required to be higher and higher by an owner, the same service life of the roof and a distributed photovoltaic module needs to be met, and the service life of the roof reaches 25-30 years.
TPO waterproofing membrane's waterproof weatherability is fit for distributing type photovoltaic very much, and TPO waterproofing membrane uses widely in the waterproof separation engineering, has the weatherability, and high temperature resistant, low temperature resistance can all be fine, and the pliability is good, has better limited slip performance.
However, the distributed photovoltaic roof has the requirement of being frequently accessible to the roof and needs to be frequently maintained, so that the waterproof roll is required to have good surface wear resistance, good slip resistance and good weather resistance. Whereas existing TPO coils are not abrasion resistant. Aiming at the point, the invention provides a wear-resistant anti-slip TPO waterproof coiled material and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a wear-resistant anti-slip TPO waterproof coiled material which comprises the following components in parts by mass:
Figure BDA0003881988010000011
preferably, the TPO elastomer has a density of less than 0.88g/cm 3
Preferably, the SEBS has a star-shaped structure.
Preferably, the elongation at break of the SEBS is not less than 400%.
Preferably, the mass ratio of the total amount of the TPO elastomer and the SEBS to the PP is 3:7 to 4:6.
Preferably, the light stabilizer is selected from one or more of hindered amine, o-hydroxybenzophenone and benzotriazole.
Preferably, the antioxidant is selected from one or more of 2,6-bis (1,1-dimethylethyl) -4-methylphenol, pentaerythrityl tetrakis [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythrityl tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropionate, and tris (2,4-di-tert-butylphenyl) phosphite.
The invention also provides a preparation method of the wear-resistant anti-slip TPO waterproof coiled material, which comprises the following steps:
1) Adding PP, TPO elastomer and SEBS into a high-speed mixer, and uniformly mixing at normal temperature to obtain a first mixture; then adding the first mixture into a main feeding port of a double-screw extruder for blending granulation to obtain a granulation material;
2) Adding titanium dioxide, a light stabilizer and an antioxidant into a high-speed mixer, and uniformly mixing at normal temperature to obtain a second mixture;
3) Adding the granulated material obtained in the step 1) into a main feeding port of a double-screw extruder, adding the second mixture obtained in the step 2) into a side feeding port of the double-screw extruder, melting and extruding a sheet through the extruder, calendering by a three-roller system, cooling, forming and rolling to obtain the wear-resistant and anti-slip TPO waterproof coiled material.
Preferably, in the step 1), the processing temperature of the extruder is 170 to 200 ℃, the screw rotation speed is 80rpm, the drawing speed is 12m/min, and the particle size of the granulated material is controlled to about 6mm.
Preferably, in the step 3), the processing temperature of the extruder is 170-200 ℃, the screw rotation speed is 15rpm, the traction speed is 0.9m/min, and the tension is controlled to be 10N +/-5N.
The invention has the advantages and beneficial effects that: the TPO waterproof coiled material has the advantages of good static friction coefficient, good slip resistance, good wear resistance, good weldability, good low temperature resistance and high temperature resistance, and is very suitable for the photovoltaic roof of people.
SEBS (polypropylene ethylene) is a thermoplastic block copolymer, has good weather resistance and good elasticity due to hydrogenation, has higher Tg due to the addition of styrene, forms an interpenetrating network structure in the blending process with PP and TPO elastomers, strengthens the physical crosslinking performance, has higher wear resistance and better skid resistance compared with a linear structure due to the wear resistance of a star structure, is softer and has good flexibility, so that the TPO waterproof coiled material has better static friction coefficient and better skid resistance; and the low temperature resistance and the high temperature resistance are good.
However, SEBS is in an amorphous structure, has poor surface welding performance, and needs to be blended with TPO elastomer to obtain better welding performance, so that the content needs to be controlled, and the welding efficiency and the abrasion resistance need to be balanced. If too much SEBS is added, the mechanical properties (especially the elongation at break) of the TPO waterproof coiled material can be reduced rapidly and are lower than the standard of the TPO waterproof coiled material.
TPO elastomer's melting range is very wide, and the crystallinity is low, when improving waterproofing membrane pliability, can promote welding efficiency, simultaneously because the pliability is high, the coefficient of static friction is also high, has fine limited slip performance, can prevent that people's operation from slipping to tumble injury on the roofing. However, the TPO elastomer has the defects of no abrasion resistance, serious mass abrasion and hidden danger of leakage when a roof is stepped by a person for a long time. The adopted star SEBS is soft and has good blending dispersibility with TPO material, so the material still has slip resistance and good wear resistance; is very suitable for the photovoltaic roof of people.
The traditional method adopts wear-resistant auxiliary agents (such as silicone materials) and achieves the purpose of wear resistance by improving the surface lubricity, and the traditional method has the defects of loss of welding performance, reduction of weather resistance and quick reduction of mechanical performance, is not suitable for the standard of TPO waterproof coiled materials and has adverse effect on slip prevention.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention provides a wear-resistant anti-slip TPO waterproof coiled material which is prepared by the following steps:
1) Adding 20-50 parts by mass of PP, 20-80 parts by mass of TPO elastomer and 5-50 parts by mass of SEBS into a high-speed mixer, and uniformly mixing at normal temperature to obtain a first mixture; then adding the first mixture into a main feeding port of a double-screw extruder for blending granulation to obtain granules;
specifically, in step 1):
the density of the TPO elastomer is less than 0.88g/cm 3
SEBS is in a star structure, and the elongation at break of the SEBS is not less than 400%;
the mass ratio of the total amount of TPO elastomer and SEBS to PP is 3:7-4:6;
the processing temperature of the extruder is 170-200 ℃, the rotating speed of the screw is 80rpm, the traction speed is 12m/min, and the particle size of the granulating material is controlled to be about 6 mm;
2) Adding 5-20 parts by mass of titanium dioxide, 0.3-1.5 parts by mass of light stabilizer and 0.1-0.8 part by mass of antioxidant into a high-speed mixer, and uniformly mixing at normal temperature to obtain a second mixture;
specifically, in the step 2):
the light stabilizer is selected from one or more of hindered amine, o-hydroxybenzophenone and benzotriazole;
the antioxidant is selected from one or more of 2,6-bis (1,1-dimethylethyl) -4-methylphenol, tetra [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, tetra (3,5-di-tert-butyl-4-hydroxy) phenylpropionic acid pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite;
3) Adding the granulated material obtained in the step 1) into a main feeding port of a double-screw extruder, adding the second mixture obtained in the step 2) into a side feeding port of the double-screw extruder, melting and extruding a sheet through the extruder, calendering and cooling the sheet by a three-roller system, and rolling the sheet to obtain the wear-resistant and slip-resistant TPO waterproof coiled material;
specifically, in step 3):
the processing temperature of the extruder is 170-200 ℃, the rotating speed of the screw is 15rpm, the traction speed is 0.9m/min, and the tension is controlled to be 10N +/-5N.
The specific examples and comparative examples of the present invention are as follows:
Figure BDA0003881988010000041
Figure BDA0003881988010000051
wherein:
the SEBS602 is in a star structure, and the hardness is 81Shore A;
SEBS501 has a linear structure and hardness of 76A.
The properties of the above examples and comparative examples are as follows:
Figure BDA0003881988010000052
as can be seen from the above table, the addition of the SEBS60215 to 35 parts to the TPO waterproof roll can balance abrasion and slip resistance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The wear-resistant anti-slip TPO waterproof coiled material is characterized by comprising the following components in parts by mass:
Figure FDA0003881985000000011
2. the abrasion resistant non-slip TPO waterproofing membrane according to claim 1 wherein the density of said TPO elastomer is less than 0.88g/cm 3
3. The roll of abrasion-resistant slip-resistant TPO waterproofing membrane according to claim 1 wherein said SEBS is of star-shaped structure.
4. The roll of waterproof TPO material as claimed in claim 1, wherein the SEBS has an elongation at break of not less than 400%.
5. The roll of abrasion-resistant anti-slip TPO waterproofing membrane according to claim 1, wherein the mass ratio of the total amount of TPO elastomer and SEBS to PP is 3:7-4:6.
6. The roll of TPO waterproofing membrane with abrasion resistance and slip resistance as claimed in claim 1, wherein said light stabilizer is selected from one or more of hindered amine, o-hydroxybenzophenone and benzotriazole.
7. The roll of abrasion-resistant anti-slip TPO waterproof material as claimed in claim 1, wherein the antioxidant is selected from one or more of 2,6-bis (1,1-dimethylethyl) -4-methylphenol, tetrakis [ β - (3,5-di-tert-butyl-4-hydroxyphenyl) propanoic acid ] pentaerythritol ester, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropionic acid pentaerythritol ester, and tris (2,4-di-tert-butylphenyl) phosphite.
8. The method for preparing the abrasion-resistant and slip-resistant TPO waterproof roll material as claimed in any one of claims 1 to 7, which comprises the following steps:
1) Adding PP, TPO elastomer and SEBS into a high-speed mixer, and uniformly mixing at normal temperature to obtain a first mixture; then adding the first mixture into a main feeding port of a double-screw extruder for blending granulation to obtain granules;
2) Adding titanium dioxide, a light stabilizer and an antioxidant into a high-speed mixer, and uniformly mixing at normal temperature to obtain a second mixture;
3) Adding the granulated material obtained in the step 1) into a main feeding port of a double-screw extruder, adding the second mixture obtained in the step 2) into a side feeding port of the double-screw extruder, melting and extruding a sheet through the extruder, calendering, cooling and molding by a three-roll system, and rolling to obtain the wear-resistant and slip-resistant TPO waterproof coiled material.
9. The preparation method of the abrasion-resistant and slip-resistant TPO waterproof roll according to claim 8, wherein in the step 1), the processing temperature of the extruder is 170-200 ℃, the screw rotation speed is 80rpm, the traction speed is 12m/min, and the particle size of the granulating material is controlled to be 6mm.
10. The preparation method of the abrasion-resistant and slip-resistant TPO waterproof roll according to claim 8, wherein in the step 3), the processing temperature of the extruder is 170 ℃ to 200 ℃, the screw rotation speed is 15rpm, the traction speed is 0.9m/min, and the tension is controlled to be 10N +/-5N.
CN202211233815.5A 2022-10-10 2022-10-10 Wear-resistant anti-slip TPO waterproof coiled material and preparation method thereof Active CN115449141B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202211233815.5A CN115449141B (en) 2022-10-10 2022-10-10 Wear-resistant anti-slip TPO waterproof coiled material and preparation method thereof
PCT/CN2023/105061 WO2024078055A1 (en) 2022-10-10 2023-06-30 Wear-resistant and non-slip tpo waterproof coiled material and preparation method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211233815.5A CN115449141B (en) 2022-10-10 2022-10-10 Wear-resistant anti-slip TPO waterproof coiled material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115449141A true CN115449141A (en) 2022-12-09
CN115449141B CN115449141B (en) 2023-08-01

Family

ID=84309762

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211233815.5A Active CN115449141B (en) 2022-10-10 2022-10-10 Wear-resistant anti-slip TPO waterproof coiled material and preparation method thereof

Country Status (2)

Country Link
CN (1) CN115449141B (en)
WO (1) WO2024078055A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078055A1 (en) * 2022-10-10 2024-04-18 苏州凯伦高分子新材料科技有限公司 Wear-resistant and non-slip tpo waterproof coiled material and preparation method therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110052852A1 (en) * 2009-08-28 2011-03-03 Susnata Samanta Waterproofing Membrane
CN102559135A (en) * 2012-02-09 2012-07-11 深圳市卓宝科技股份有限公司 Asphalt self-adhesive and high-polymer self-adhesion rubber waterproof coiled material prepared from asphalt self-adhesive
CN104260504A (en) * 2014-09-26 2015-01-07 北京化工大学 High-performance thermoplastic polyolefin waterproof coiled material with high scrap rubber powder doping amount
CN113652179A (en) * 2021-09-07 2021-11-16 建国伟业防水科技望都有限公司 Thermoplastic polyolefin waterproof coiled material with self-adhesive layer and preparation method thereof
WO2021258517A1 (en) * 2020-06-22 2021-12-30 安徽滁州德威新材料有限公司 Waterproof roll particle, preparation method therefor, and use thereof
CN114672089A (en) * 2022-04-21 2022-06-28 苏州凯伦高分子新材料科技有限公司 High-puncture-resistance aging-resistant pre-laid waterproof impervious coiled material and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013173824A (en) * 2012-02-24 2013-09-05 Nisshin Kogyo Co Ltd Modified asphalt composition for waterproof construction
CN103756137B (en) * 2013-12-31 2016-08-17 天津金发新材料有限公司 A kind of TPO thermoplastic elastomer (TPE) and its preparation method and application
KR102441848B1 (en) * 2021-07-02 2022-09-07 김은돈 Resin compostion for waterproof sheet and waterproof sheet comprising thereof
CN115449141B (en) * 2022-10-10 2023-08-01 苏州凯伦高分子新材料科技有限公司 Wear-resistant anti-slip TPO waterproof coiled material and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110052852A1 (en) * 2009-08-28 2011-03-03 Susnata Samanta Waterproofing Membrane
CN102559135A (en) * 2012-02-09 2012-07-11 深圳市卓宝科技股份有限公司 Asphalt self-adhesive and high-polymer self-adhesion rubber waterproof coiled material prepared from asphalt self-adhesive
CN104260504A (en) * 2014-09-26 2015-01-07 北京化工大学 High-performance thermoplastic polyolefin waterproof coiled material with high scrap rubber powder doping amount
WO2021258517A1 (en) * 2020-06-22 2021-12-30 安徽滁州德威新材料有限公司 Waterproof roll particle, preparation method therefor, and use thereof
CN113652179A (en) * 2021-09-07 2021-11-16 建国伟业防水科技望都有限公司 Thermoplastic polyolefin waterproof coiled material with self-adhesive layer and preparation method thereof
CN114672089A (en) * 2022-04-21 2022-06-28 苏州凯伦高分子新材料科技有限公司 High-puncture-resistance aging-resistant pre-laid waterproof impervious coiled material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
于清溪: "热塑性弹性体在橡胶工业的应用与发展(上)", 橡塑技术与装备, no. 12 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078055A1 (en) * 2022-10-10 2024-04-18 苏州凯伦高分子新材料科技有限公司 Wear-resistant and non-slip tpo waterproof coiled material and preparation method therefor

Also Published As

Publication number Publication date
CN115449141B (en) 2023-08-01
WO2024078055A1 (en) 2024-04-18

Similar Documents

Publication Publication Date Title
CN110330727B (en) Thermoplastic insulating material for medium and high voltage and preparation method thereof
US4774277A (en) Blends of polyolefin plastics with elastomeric plasticizers
CN108102347B (en) High-physical-property matte thermoplastic polyurethane elastomer and preparation method thereof
CA1285093C (en) Heat shrinkable thermoplastic olefin composition
KR100632603B1 (en) Thermoplastic Elastomer Compositions and Method of Making the Same
JP2002537432A (en) Thermoplastic vulcanized rubber and method for producing the same
CN115449141A (en) Wear-resistant and slip-resistant TPO waterproof coiled material and preparation method thereof
JP2013515823A (en) Polymer composition, method of making the same, and article prepared therefrom
CN107987516B (en) TPU/terpolymer nylon composite halogen-free flame-retardant cable material and preparation method thereof
CN113912942A (en) Environment-friendly odorless scratch-resistant polypropylene composite material and preparation thereof
CN114672131B (en) Automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and preparation method thereof
CN1177891C (en) Wear resistant thermoplastic elastomer material composition
CN112266565A (en) Antibacterial environment-friendly flame-retardant elastomer and preparation method and application thereof
CN113881146A (en) Wear-resistant high-impact polypropylene composition and preparation method and application thereof
CN111253717B (en) Thermoplastic elastomer and preparation method thereof
US3121069A (en) Composition of styrene-butadiene copolymer and polyorganosiloxane
CN109897356B (en) High-heat-resistance polycarbonate composition and preparation method thereof
CN112029276A (en) Special material for low-temperature toughened polyamide cable tie with high water absorption rate, cable tie and preparation method
KR100477345B1 (en) Process for preparing thermoplastic elastomer composition
CN108003479B (en) Composite additive for random copolymerization polypropylene pipe
CN113667259B (en) Thermoplastic elastomer and preparation method and application thereof
JPH11181172A (en) Thermoplastic elastomer composition
CN113715450B (en) Assembled floor with double-layer structure and preparation method thereof
JPH0525339A (en) Silicone rubber compound
CN117511167A (en) Low-internal-stress fluorine-free flame-retardant polycarbonate material and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant