KR950007412B1

KR950007412B1 - Manufacturing method of rope

Info

Publication number: KR950007412B1
Application number: KR1019930008464A
Authority: KR
Inventors: 최상렬; 최원준; 박종태
Original assignee: 주식회사코오롱; 하기주
Priority date: 1993-05-18
Filing date: 1993-05-18
Publication date: 1995-07-10

Abstract

A para-group of aramide was twisted to satisfy the equation (TPM = 2880×1.1 Dexp 1/2±5%; D= Denier), and impregnated into an aqueous solution containing polyester polyol and 5-20% polyurethane having 40-50 % a solid part, and dried to manufacture the rope. The rope was treated with 1-10 % ultraviolet absorbent solution such as titanium oxide, zinc oxide, iron oxide, benzophenone derivatives, benzotriazole and triethanolamine, dried at 120 degree C, and heat treated at 190 degree C for 1 min to give the rope having a good weatherability.

Description

Rope manufacturing method with excellent weather resistance

본 발명은 폴리파라페닐렌테레프탈아미드(Poly-P-PhenyleneterephThe present invention is polyparaphenylene terephthalamide (Poly-P-Phenylenetereph

thalamide; 이하 "아라미드")섬유를 적정수준으로 연사한 다음 폴리우레탄수지 함침과 자외선 차단제처리를 하여서 높은 강력과 내마모성을 가지며 자외선에 대한 내성(耐性)을 가지는 내후성이 우수한 로프의 제조방법에 관한 것이다.thalamide; The present invention relates to a method for producing a rope having excellent weather resistance having high strength and abrasion resistance and resistance to ultraviolet rays by impregnating aramid fibers to an appropriate level and then impregnating a polyurethane resin with a sunscreen.

본 발명으로 제조된 로프는 자외선에 대한 내성이 요구되어지는 육상 및 해상용 로프로 사용될 수 있으며 유연하며 전기절연성이 요구되는 송전선가설용 로프등에도 사용될 수 있다.The rope manufactured according to the present invention can be used as a land and marine rope which is required to be resistant to ultraviolet rays, and can also be used for a transmission line construction rope which is flexible and requires electrical insulation.

종래에는 각종 나이론섬유로 로프를 만들어 사용해 왔으나, 나이론섬유는 자외선에 대하여 취약하므로 이를 해소하기 위해 일반적으로 폴리에스테르섬유를 외피로 커버링(covering)하였으며, 또한 요구강력을 얻기 위해서는 로프의 굵기를 증가시켰기 때문에 중량이 무거워질 수 밖에 없었던 문제점이 있었다.Conventionally, ropes have been made of various nylon fibers, but nylon fibers are vulnerable to UV rays, and in order to solve them, the polyester fibers are generally covered with an outer sheath, and the thickness of the ropes is increased to obtain the required strength. There was a problem that the weight was forced to be heavy.

본 발명은 이와 같은 문제점을 해결한 것으로서 본 발명에서는 고강도 고내열성섬유인 아라미드섬유를 사용하여 로프의 굵기 및 중량을 대폭 감소시키면서도 높은 강력을 얻을 수 있도록 하였으며 또 자외선차단제로 처리하여서 내후성이 보다 개선될 수 있도록 한 것인 바, 이하 상세히 설명하면 다음과 같다.The present invention has solved such a problem, and in the present invention, aramid fibers, which are high strength and high heat resistant fibers, can be used to obtain high strength while significantly reducing the thickness and weight of the rope. It will be described in detail as follows.

본 발명은 파라계아라미드섬유를 사용하되 연계수가 1.1일때 최대강도를 얻을 수 있다는 점에 착안하여, T/M=2880×1.1/√D±5%의 범위로 연사한다(D; 단사데니어).The present invention focuses on the use of para-aramid fibers, but the maximum strength is obtained when the number of linkages is 1.1, and it is twisted in the range of T / M = 2880 × 1.1 / √D ± 5% (D; single yarn denier).

이때, 연수가 ±5% 범위를 벗어나게 되면 최대강도를 얻을 수가 없게 된다.In this case, when the number of years is out of ± 5% range, the maximum strength cannot be obtained.

즉, 연수가 낮을 경우 강도증가가 없고 연수가 너무 높을 경우 오히려 강도가 저하된다.In other words, when the number of years is low, there is no increase in strength, and when the number of years is too high, the strength decreases.

이어서 연사한 아라미드섬유를 폴리에스테르계 폴리올을 주성분으로 하며, 고형분이 40~50%인 폴리우레탄 5~20%(owf)의 수용액에 침지시킨다.Subsequently, the twisted aramid fibers are immersed in an aqueous solution of 5 to 20% (owf) of polyurethane having a solid content of 40 to 50% as a main component of the polyester polyol.

수용성 폴리우레탄에 함침시키는 이유는 섬유내부로 폴리우레탄수지가 침투되어 열고정을 받음으로서 최종제품시 로프의 집속성을 높혀주고 마찰에 대한 내성을 얻고자 함이다.The reason for impregnating the water-soluble polyurethane is to increase the focusing of the rope in the final product and to obtain the resistance to friction as the polyurethane resin penetrates into the fiber and undergoes heat setting.

폴리우레탄수용액이 5%(owf)미만일 경우 충분한 효과를 발휘할 수 없고, 20%(owf)를 초과할 경우 고형분이 과다하여 점착성(粘着性)을 나타낸다.If the aqueous polyurethane solution is less than 5% (owf) it can not exhibit a sufficient effect, if it exceeds 20% (owf), the solid content is excessive to show the adhesiveness (粘着).

상기한 바와 같이 함침된 아라미드연사물을 요구하는 강력을 얻기 위해서 통상의 방법으로 다시 수가닥내지는 수십가닥으로 꼬아서 로프를 완성시킨다.The rope is completed by twisting it into dozens of strands, which are again numbered by conventional methods, in order to obtain the strength required for the aramid twisted material impregnated as described above.

이렇게 제조된 로프를 자외선차단가공을 하게 되는 바, 일반적으로 자외선 차단제는 산화티탄, 산화아연, 산화철 등의 자외선산란제와 벤조페논유도체, 벤조트리아졸, 트리엔탄올아민 등이 있다.As a result of the UV blocking process of the rope thus prepared, sunscreens generally include ultraviolet light scattering agents such as titanium oxide, zinc oxide and iron oxide, benzophenone derivatives, benzotriazole, and trientanolamine.

본 발명에서는 수분산형 자외선흡수제의 1~10%(owf)수용액에 통과시킨 뒤, 120℃에서 건조후 190℃에서 1분간 열처리한다.In the present invention, after passing through 1-10% (owf) aqueous solution of the water-dispersive UV absorber, and dried at 120 ℃ and heat-treated at 190 ℃ for 1 minute.

자외선흡수제가 1% 미만일 경우 효과를 기대할 수 없고, 10% 이상일 경우 효과의 증가는 없고 비용만 상승된다.If the UV absorber is less than 1%, the effect is not expected, and if it is more than 10%, the effect is not increased and the cost is increased.

본 발명으로 제조된 로프는 자외선차단효과를 가짐으로 내후성이 우수하며 경향이면서도 높은 강력을 발휘한다.The rope produced according to the present invention exhibits excellent sun resistance and tends to have high strength due to its UV blocking effect.

Claims

The para-aramid is twisted so that the twisted water (TPM) satisfies the following formula (1), and then immersed and dried in an aqueous solution of 5 to 20% (owf) of polyurethane with a solid content of 40 to 50%, mainly composed of a polyester polyol. After manufacturing the rope by treatment in a UV absorber 1 ~ 10% (owf) demand solution, the method for producing a rope (rope) excellent weather resistance, characterized in that the drying and heat treatment.

The method according to claim 1, wherein the UV absorber is selected from benzophenone derivatives, benzotriazoles, and triethanolamines.