KR0163129B1 - Improved adhesion method of polyurethane body and rubber tread in manufacture of non-pneumatic polyurethane tire - Google Patents
Improved adhesion method of polyurethane body and rubber tread in manufacture of non-pneumatic polyurethane tire Download PDFInfo
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- KR0163129B1 KR0163129B1 KR1019940011226A KR19940011226A KR0163129B1 KR 0163129 B1 KR0163129 B1 KR 0163129B1 KR 1019940011226 A KR1019940011226 A KR 1019940011226A KR 19940011226 A KR19940011226 A KR 19940011226A KR 0163129 B1 KR0163129 B1 KR 0163129B1
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- polyurethane
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- tire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Tires In General (AREA)
Abstract
본 발명은 비공기압 폴리우레탄 타이어를 제조함에 있어서, 폴리우레탄 몸체와 고무 트레드 간의 접착력을 향상시키는 비공기압 폴리우레탄 타이어의 제조방법에 관한 것이다.The present invention relates to a method for producing a non-pneumatic polyurethane tire in the production of a non-pneumatic polyurethane tire, to improve the adhesion between the polyurethane body and the rubber tread.
본 발명은 폴리우레탄 몸체와 고무 트레드를 접착시킬 때, 폴리우레탄 몸체의 경도와 고무 트레드 경도의 중간 경도를 가지는 폴리우레탄층을 삽입, 접착시킴으로써 주행중 타이어에 전단응력이 가해질 경우, 고무 트레드와 폴리우레탄 몸체 사이의 경도차를 감소시켜서 접착면이 이탈되는 것을 방지하는 폴리우레탄 몸체와 고무 트레드간의 접착력을 향상시키는 방법임을 특징으로 한다.The present invention provides a rubber tread and a polyurethane when shear stress is applied to a tire while driving by inserting and bonding a polyurethane layer having an intermediate hardness between the hardness of the polyurethane body and the rubber tread when bonding the polyurethane body and the rubber tread. It is characterized in that the method of improving the adhesion between the polyurethane body and the rubber tread to prevent the adhesion surface is separated by reducing the hardness difference between the body.
Description
본 발명은 비공기압 폴리우레탄 타이어를 제조함에 있어서, 폴리우레탄 몸체와 고무 트레드간의 접착력을 향상시키는 비공기압 폴리우레탄 타이어의 제조방법에 관한 것이다.The present invention relates to a method for producing a non-pneumatic polyurethane tire in the production of a non-pneumatic polyurethane tire, to improve the adhesion between the polyurethane body and the rubber tread.
좀 더 상세하게는 폴리우레탄 몸체와 고무 트레드를 접착시킬 때, 폴리우레탄 몸체와 고무 트레드 사이에 고무 트레드의 경도(hardness)와 폴리우레탄 몸체의 경도의 중간 경도를 가지는 폴리우레탄 층을 삽입, 접착시킴으로써 주행중 타이어에 전단응력(shear force)이 가해질 경우 고무와 폴리우레탄 몸체 사이의 경도차를 감소시켜서 접착면이 이탈되는 것을 방지하는 폴리우레탄 몸체와 고무 트레드간의 접착력을 향상시키는 방법에 관한 것이다.More specifically, when bonding the polyurethane body and the rubber tread, by inserting and bonding a polyurethane layer having a hardness between the hardness of the rubber tread and the hardness of the polyurethane body between the polyurethane body and the rubber tread. The present invention relates to a method of improving adhesion between a polyurethane body and a rubber tread to reduce the hardness difference between the rubber and the polyurethane body when the tire is subjected to shear force while driving, thereby preventing the adhesive surface from deviating.
비공기압 타이어는 몸체가 전부 폴리우레탄으로 제조되는데, 종래에는 견인력과 제동력을 향상시키고자 트레드 부위를 일반 타이어용 고무 트레드로 제작하고 이를 접착시켜서 비공기압 타이어를 제조하였다. 이러한 제조방법은 일반적으로 고무 트레드를 가류시키고 이를 폴리우레탄 몰드에 넣은 후 여기에 폴리우레탄를 주입시켜서 비공기압 폴리우레탄 타이어를 제조하는 것이다.Non-pneumatic tires are all made of polyurethane, conventionally produced non-pneumatic tires by making a tread portion of a rubber tread for general tires and to adhere to improve the traction and braking force. This manufacturing method is generally prepared by non-pneumatic polyurethane tires by vulcanizing the rubber tread and placing it in a polyurethane mold and then injecting polyurethane therein.
상기와 같은 방법으로 제조된 비공기압 폴리우레탄 타이어를 견인력과 제동력이 향상된 것이나, 고무와 폴리우레탄을 접착시킨 후 주행시험을 하였을 때, 고무와 폴리우레탄의 경도(hardness) 차이가 심하여, 주행 중 타이어에 전단응력(shear force)이 가해질 경우, 이에 대한 고무와 폴리우레탄과의 반응이 각각 달라 고무와 폴리우레탄과의 접착면이 이탈되는 사고가 발생한다.The non-pneumatic polyurethane tires manufactured as described above have improved traction and braking force, but when the driving test is performed after the rubber and the polyurethane are bonded, the hardness of the rubber and the polyurethane is severe, and the tire while driving When shear stress is applied to the rubber, the reaction between rubber and polyurethane is different, and an accident occurs that the adhesive surface between rubber and polyurethane is separated.
상기와 같은 문제점을 해결하고자, 종래에는 비공기압 타이어에서의 접착력을 개선하기 위해 접착제를 사용하는 방법(USP 4,942,093)과 고무 트레드와 직조된 실을 접합한 다음 일부를 늘어 뜨리고 폴리우레탄에 주입, 접착하여 물리적, 화학적 접착을 병행하는 방법(USPS 3,775,528; EP 0 316 666 A1)과 같은 연구과 진행되고 있다.In order to solve the above problems, conventionally, a method of using an adhesive (USP 4,942,093) and a rubber tread and a woven thread are bonded together to improve the adhesive force in a non-pneumatic tire, and then a part is stretched and injected into the polyurethane. Such as physical and chemical bonding (USPS 3,775,528; EP 0 316 666 A1).
이에, 본 발명자들은 상기와 같이 비공기압 폴리우레탄 타이어에서 폴리우레탄 몸체와 고무 트레드 사이의 접착력이 취약한 점을 개선할 목적으로 예의 연구한 결과, 본 발명을 완성하였다.Accordingly, the present inventors have completed the present invention as a result of earnestly research for the purpose of improving the weakness of the adhesive force between the polyurethane body and the rubber tread in the non-pneumatic polyurethane tire as described above.
본 발명은 폴리우레탄 몸체와 고무 트레드를 접착시키기 위해 폴리우레탄과 고무의 중간 경도를 보유한 폴리우레탄을 제조하고, 이를 폴리우레탄 몸체와 고무 트레드 사이에 접착하여 제조된 비공기압 폴리우레탄 타이어에서 고무와 폴리우레탄과의 접착력을 향상시킴을 특징으로 한다.The present invention manufactures a polyurethane having a medium hardness of polyurethane and rubber to bond the polyurethane body and the rubber tread, and adheres it between the polyurethane body and the rubber tread to produce rubber and poly in a non-pneumatic polyurethane tire. It is characterized by improving adhesion with urethane.
본 발명에 따른 비공기압 폴리우레탄 타이어의 제조방법을 설명하면 다음과 같다.Referring to the manufacturing method of the non-pneumatic polyurethane tire according to the present invention.
분자량이 650∼2900인 폴리테트라메틸렌에텔글리콜(PTMEG : polytetramethyl eneetherglycol)을 톨루엔디이소시아네이트(TDI : Toluenediisocyanate)와 1:1.5∼2의 몰비로 혼합하고, 80℃, 대기압, 질소하에서 3시간 동안 방치시킨 후, 합성된 프리폴리머(이하, 프리폴리머 A라 한다.)와 분자량이 650∼3000인 폴리프로필렌글리콜(PPG : polypropyleneglycol)을 톨루엔디이소시아네이트와 1 : 1.5∼2의 몰비로 섞어서 80℃, 대기압, 질소하에서 3시간 동안 방치시켜서 합성한 프리폴리머(이하, 프로폴리머 B라 한다.)를 중량비로 90∼50 : 10∼50으로 혼합하였다. 그런 다음, 쇄연장제인 메틸렌오르토클로로아민(MOCA : methylene-o-chloroamine)과 120℃, 대기압하에서 혼합시킨 엑상의 폴리우레탄을 제조하였다.Polytetramethylene ether glycol (PTMEG: polytetramethyl eneetherglycol) having a molecular weight of 650 to 2900 was mixed with toluenediisocyanate (TDI: Toluenediisocyanate) at a molar ratio of 1: 1.5 to 2, and left to stand at 80 ° C. under atmospheric pressure and nitrogen for 3 hours. Thereafter, the synthesized prepolymer (hereinafter referred to as prepolymer A) and polypropylene glycol (PPG: polypropyleneglycol) having a molecular weight of 650 to 3000 were mixed with toluene diisocyanate at a molar ratio of 1: 1.5 to 2 at 80 캜, atmospheric pressure, and nitrogen. The prepolymer synthesized by standing for 3 hours (hereinafter referred to as propolymer B) was mixed in a weight ratio of 90 to 50: 10 to 50. Then, an extruded polyurethane mixed with methylene orthochloroamine (MOCA: methylene-o-chloroamine) as a chain extender at 120 ° C. and atmospheric pressure was prepared.
상기의 액상 제조물을 가류된 고무 트레드(경도 : 쇼어 A 70)가 장착된 비공기압 폴리우레탄 타이어 몰드에 주입시킨 후, 액상의 폴리우레탄이 겔화되기 이전에 타이어의 몸체가 되는 폴리우레탄(경도 : 쇼어 A 95)을 주입하여 비공기압 폴리우레탄 타이어를 제조한다.The liquid product is injected into a non-pneumatic polyurethane tire mold equipped with a vulcanized rubber tread (hardness: Shore A 70), and then the polyurethane which becomes the body of the tire before the liquid polyurethane is gelled (hardness: Shore). A 95) is injected to produce a non-pneumatic polyurethane tire.
이와 같이 본 발명에 따라 제조되는 폴리우레탄은 상용되는 폴리우레탄에 비해 경도 쇼어 A 70∼95의 낮은 값을 갖고 인장강도와 신율이 높아서 전단응력이 가해질수록 인장강도가 증가하는 특성을 보유한다.As described above, the polyurethane prepared according to the present invention has a lower value of hardness Shore A 70 to 95 and higher tensile strength and elongation than commercially available polyurethane, and thus has a property of increasing tensile strength as shear stress is applied.
따라서, 본 발명에 따라 제조된 비공기압 폴리우레탄 타이어는 폴리우레탄 몸체와 고무 트레드사이에 이들 경도의 중간 경도를 갖는 폴리우레탄을 결합시킴으로써 고무와 폴리우레탄의 접착성능이 더욱 증가되는 효과를 얻을 수 있으며, 주행시 타이어에 전단응력이 가해질 때 고무와 폴리우레탄간의 접착면이 이탈되는 것을 방지할 수 있다.Therefore, the non-pneumatic polyurethane tire produced according to the present invention can obtain the effect that the adhesion performance of the rubber and polyurethane is further increased by bonding a polyurethane having a medium hardness of these hardness between the polyurethane body and the rubber tread. When the shear stress is applied to the tire while driving, the adhesive surface between the rubber and the polyurethane can be prevented from being separated.
이하, 실시예의 의거 본 발명을 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated based on an Example.
[실시에 1][Example 1]
본 실시예는 본 발명에 따라 제조되는 폴리우레탄 용액과 이를 사용하여 비공기압 타이어를 제조하는 방법에 관한 것이다.This embodiment relates to a polyurethane solution prepared according to the invention and a method for producing a non-pneumatic tire using the same.
우선, 폴리우레탄 용액은, 분자량이 2900인 폴리테트라메틸렌에텔글리콜을 톨루엔디이소시아네이트와 1:2의 몰비로 섞고 80℃, 대기압, 질소하에서 3시간 방치시켜 합성한 프리폴리머(이하, 프리폴리머 A라 한다.)와 분자량이 1000인 폴리프로필렌글리콜을 톨루엔디이소시아네이트와 1:2의 몰비로 섞어 80℃, 대기압, 질소하에서 3시간 유지시켜서 합성한 프리폴리머(이하, 프리폴리머 B라한다.)를 중량비 80:20으로 혼합하여 프리폴리머A,B 혼합물(mixture)을 제조한다. 그런 다음, 메틸렌오르토클로로아민을 프리폴리머 A와 B에 1:1 몰비로 첨가하고 120℃, 대기압하에서 첨가한 후, 곧바로 가류시킨 고무트레드(경도 : 쇼어 A 70)가 장착된 비공기압 폴리우레탄 타이어 몰드에 주입하고, 액상의 폴리우레탄이 겔화되기 이전에 폴리우레탄(경도 : 쇼어 A 95)을 주입하여 규격 175/70D14인 비공기압 폴리우레탄 타이어를 제조하였다.First, the polyurethane solution is called prepolymer A (hereinafter referred to as prepolymer A) which is synthesized by mixing polytetramethylene ether glycol having a molecular weight of 2900 with toluene diisocyanate at a molar ratio of 1: 2, and standing at 80 ° C. under atmospheric pressure and nitrogen for 3 hours. ) And a polypropylene glycol having a molecular weight of 1000 were mixed with toluene diisocyanate at a molar ratio of 1: 2, and then maintained at 80 ° C., atmospheric pressure and nitrogen for 3 hours to synthesize a prepolymer (hereinafter referred to as prepolymer B) in a weight ratio of 80:20. Mixing produces a prepolymer A, B mixture. Then, methylene orthochloroamine was added to the prepolymers A and B in a 1: 1 molar ratio, and 120 ° C. at atmospheric pressure, followed by a non-pneumatic polyurethane tire mold equipped with a rubber tread (hardness: Shore A 70) immediately vulcanized. And a polyurethane (hardness: Shore A 95) was injected before the liquid polyurethane was gelled to prepare a non-pneumatic polyurethane tire of specification 175 / 70D14.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940011226A KR0163129B1 (en) | 1994-05-23 | 1994-05-23 | Improved adhesion method of polyurethane body and rubber tread in manufacture of non-pneumatic polyurethane tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940011226A KR0163129B1 (en) | 1994-05-23 | 1994-05-23 | Improved adhesion method of polyurethane body and rubber tread in manufacture of non-pneumatic polyurethane tire |
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| Publication Number | Publication Date |
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| KR950031478A KR950031478A (en) | 1995-12-18 |
| KR0163129B1 true KR0163129B1 (en) | 1999-01-15 |
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| KR1019940011226A KR0163129B1 (en) | 1994-05-23 | 1994-05-23 | Improved adhesion method of polyurethane body and rubber tread in manufacture of non-pneumatic polyurethane tire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230162332A (en) | 2022-05-20 | 2023-11-28 | 한국타이어앤테크놀로지 주식회사 | Non-pneumatic tire with improved adhesion and Method of improving adhesion of non-pneumatic tire |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415477C (en) * | 2005-12-05 | 2008-09-03 | 广州华工百川科技股份有限公司 | Polyester-rubber composite tyre and its production method |
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1994
- 1994-05-23 KR KR1019940011226A patent/KR0163129B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230162332A (en) | 2022-05-20 | 2023-11-28 | 한국타이어앤테크놀로지 주식회사 | Non-pneumatic tire with improved adhesion and Method of improving adhesion of non-pneumatic tire |
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| Publication number | Publication date |
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| KR950031478A (en) | 1995-12-18 |
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