KR20230051838A - Method for insulating pipe and composition therefor - Google Patents
Method for insulating pipe and composition therefor Download PDFInfo
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- KR20230051838A KR20230051838A KR1020210134704A KR20210134704A KR20230051838A KR 20230051838 A KR20230051838 A KR 20230051838A KR 1020210134704 A KR1020210134704 A KR 1020210134704A KR 20210134704 A KR20210134704 A KR 20210134704A KR 20230051838 A KR20230051838 A KR 20230051838A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Abstract
본 발명은 배관을 단열하는 방법과 이를 위한 조성물에 관한 것이다. 본 발명에 따른 단열방법은 작업 대상 배관에 단열 폼을 설치하는 단계; 상기 단열폼 상에 섬유와 폴리우레탄의 복합층을 형성하는 단계; 상기 복합층 층 상에 겔코트층을 형성하는 단계를 포함하며, 상기 폴리우레탄은 에틸기를 가지는 아크릴레이트를 포함하며, 상기 겔코트층은 불포화 폴리에스터를 포함한다.The present invention relates to a method for insulating piping and a composition therefor. The insulation method according to the present invention includes the steps of installing an insulation foam on a pipe to be operated; Forming a composite layer of fibers and polyurethane on the insulating foam; and forming a gel coat layer on the composite layer, wherein the polyurethane includes acrylate having an ethyl group, and the gel coat layer includes unsaturated polyester.
Description
본 발명은 배관을 단열하는 방법 및 이를 위한 조성물에 관한 것이다.The present invention relates to a method for insulating piping and a composition therefor.
배관의 단열 등의 목적으로 유리섬유강화플라스틱이 사용되고 있다. Glass fiber reinforced plastics are used for purposes such as insulation of pipes.
배관의 단열은 배관에 단열폼을 설치, 단열폼 상에 유리섬유강화플라스틱 설치 및 겔코트층을 형성하는 단계로 이루어진다.Insulation of the pipe consists of installing an insulating foam on the pipe, installing glass fiber reinforced plastic on the insulating foam, and forming a gel coat layer.
그런데 종래의 배관 단열방법에서는 유리섬유강화플라스틱과 겔코트층과의 결합력이 충분하지 못한 문제가 있었다.However, in the conventional pipe insulation method, there is a problem in that the bonding force between the glass fiber reinforced plastic and the gel coat layer is not sufficient.
본 발명의 목적은 유리섬유강화플라스틱과 겔코트층과의 결합력이 향상된 배관 단열방법 및 이를 위한 조성물을 제공하는 것이다.An object of the present invention is to provide a pipe insulation method with improved bonding strength between glass fiber reinforced plastic and a gel coat layer, and a composition therefor.
상기 본 발명의 목적은 배관을 단열하는 방법에 있어서, 작업 대상 배관에 단열 폼을 설치하는 단계; 상기 단열폼 상에 섬유와 폴리우레탄의 복합층을 형성하는 단계; 상기 복합층 층 상에 겔코트층을 형성하는 단계를 포함하며, 상기 폴리우레탄은 에틸기를 가지는 아크릴레이트를 포함하며, 상기 겔코트층은 불포화 폴리에스터를 포함하는 것에 의해 달성된다.An object of the present invention is to provide a method for insulating a pipe, comprising: installing an insulating foam on a pipe to be operated; Forming a composite layer of fibers and polyurethane on the insulating foam; and forming a gel coat layer on the composite layer, wherein the polyurethane includes acrylate having an ethyl group, and the gel coat layer includes unsaturated polyester.
상기 단열폼은 폴리우레탄폼을 포함할 수 있다.The insulating foam may include polyurethane foam.
상기 복합층의 형성은, 제1액과 제2액을 혼합하여 혼합액을 얻고, 혼합액을 섬유에 가하여 복합체를 얻고, 복합체를 단열폼 상에 배치 후 경화하는 단계를 포함할 수 있다.The formation of the composite layer may include mixing the first solution and the second solution to obtain a mixed solution, applying the mixed solution to fibers to obtain a composite, disposing the composite on an insulating foam, and then curing the composite.
상기 제1액은 폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며, 상기 제2액은 폴리올 80 내지 90 중량%을 포함할 수 있다.The first liquid may include 70 to 80% by weight of polyisocyanate, 10 to 20% by weight of polyol, and 5 to 10% by weight of a compound containing an ethyl group, and the second liquid may include 80 to 90% by weight of polyol.
상기 제1액의 NCO함량은 10 내지 20%일 수 있다.The NCO content of the first liquid may be 10 to 20%.
상기 에틸기 포함화합물은 HEA 또는 HEMA일 수 있다.The ethyl group-containing compound may be HEA or HEMA.
상기 제2액은 소포제, 촉매 및 흡습제 중 어느 하나를 더 포함할 수 있다.The second liquid may further include any one of an antifoaming agent, a catalyst, and a moisture absorbent.
상기 제2액의 소포제 함량은 1 내지 5중량%이며, 상기 촉매 함량은 1 내지 5 중량%일 수 있다.The antifoaming agent content of the second liquid may be 1 to 5% by weight, and the catalyst content may be 1 to 5% by weight.
상기 소포제는 non-silicon type과 silicone type을 포함할 수 있다.The antifoaming agent may include a non-silicon type and a silicone type.
상기 본 발명의 목적은 섬유와의 복합층을 형성하기 위해 사용되는 조성물에 있어서, 조성물은 제1액과 제2액이 혼합되어 형성되며, 상기 제1액은, 폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며, 상기 제2액은 폴리올 80 내지 90 중량% 포함하는 것에 의해 달성된다.In the composition used for forming a composite layer with fibers, the composition is formed by mixing a first liquid and a second liquid, and the first liquid contains 70 to 80% by weight of polyisocyanate, 10 to 20% by weight of a polyol and 5 to 10% by weight of a compound containing an ethyl group, and the second liquid is achieved by including 80 to 90% by weight of a polyol.
상기 복합층은 단열폼과 겔코트 사이에 형성되며, 상기 단열폼은 폴리우레탄을 포함하고, 상기 겔코트는 불포화 폴리에스터를 포함할 수 있다.The composite layer is formed between the insulating foam and the gel coat, the insulating foam may include polyurethane, and the gel coat may include unsaturated polyester.
상기 제1액은 폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며, 상기 제2액은 폴리올 80 내지 90 중량%을 포함할 수 있다.The first liquid may include 70 to 80% by weight of polyisocyanate, 10 to 20% by weight of polyol, and 5 to 10% by weight of a compound containing an ethyl group, and the second liquid may include 80 to 90% by weight of polyol.
상기 제1액의 NCO함량은 10 내지 20%일 수 있다.The NCO content of the first liquid may be 10 to 20%.
상기 에틸기 포함화합물은 HEA 또는 HEMA일 수 있다.The ethyl group-containing compound may be HEA or HEMA.
상기 제2액은 소포제, 촉매 및 흡습제 중 어느 하나를 더 포함할 수 있다.The second liquid may further include any one of an antifoaming agent, a catalyst, and a moisture absorbent.
상기 제2액의 소포제 함량은 1 내지 5중량%이며, 상기 촉매 함량은 1 내지 5 중량%일 수 있다.The antifoaming agent content of the second liquid may be 1 to 5% by weight, and the catalyst content may be 1 to 5% by weight.
상기 소포제는 non-silicon type과 silicone type을 포함할 수 있다.The antifoaming agent may include a non-silicon type and a silicone type.
또한 본 발명은 위 단열방법으로 제조된 단열 조립체를 포함할 수 있다. 단열조립체는 배관-단열폼-복합층-겔코트층으로 이루어져 있다. 단열조립체에서 복합층의 에틸성분과 겔코트층의 불포화 폴리에스터가 결합되어 결합력이 향상된다.In addition, the present invention may include a heat insulation assembly manufactured by the above heat insulation method. The insulation assembly is composed of piping-insulation foam-composite layer-gel coat layer. In the heat insulation assembly, the ethyl component of the composite layer and the unsaturated polyester of the gel coat layer are combined to improve bonding strength.
본 발명에 따르면 유리섬유강화플라스틱과 겔코트층과의 결합력이 향상된 배관 단열방법 및 이를 위한 조성물이 제공된다.According to the present invention, there is provided a pipe insulation method with improved bonding strength between glass fiber reinforced plastic and a gel coat layer, and a composition therefor.
도 1은 촉매의 종류에 따른 유리섬유강화플라스틱과 겔코트의 형상을 나타낸 것이다.1 shows the shapes of glass fiber reinforced plastics and gel coats according to the types of catalysts.
이하 실험예를 통해 본 발명을 설명한다.The present invention will be explained through experimental examples below.
폴리우레탄 프리폴리머 합성공정Polyurethane prepolymer synthesis process
폴리이소시아네이트 화합물과 폴리올 또는 폴리에스터 화합물을 적당한 당량비로 혼합하고 5~10분 반응시켜서 P액: NCO 10 ~ 20%, P액 R액 점도 1,000~5,000 되는 폴리우레탄 프리폴리머를 합성했다. 본 폴리우레탄 프리폴리머는 점증제, 경화제, 충전제 등을 혼합하여 사용 가능하며 아래의 [표 1]과 같은 조성물 및 조성물 혼합비를 가지고 있다.A polyisocyanate compound and a polyol or polyester compound were mixed in an appropriate equivalent ratio and reacted for 5 to 10 minutes to synthesize a polyurethane prepolymer having a P liquid: NCO of 10 to 20% and a P liquid R liquid viscosity of 1,000 to 5,000. This polyurethane prepolymer can be used by mixing a thickener, curing agent, filler, etc., and has a composition and composition mixing ratio as shown in [Table 1] below.
경화제 합성공정Curing agent synthesis process
기존 폴리우레탄 프리폴리머들은 물로 경화를 시키는데 물로 경화시켰을 때 발포가 발생을 한다. 본 발명에서는 물을 경화제를 사용하지 않고 자가경화를 시키며 촉매를 이용하여 경화시간을 조절 가능하게 개발하여 진행하였으며, HEA(하이드록시 에틸 아크릴레이트)와 HEMA(하이드록시 에틸 메타크릴레이트)를 배합함으로써 FRP에 겉표면에 코팅하는 겔코트와의 접착력을 향상시켰다.Existing polyurethane prepolymers are cured with water, but foaming occurs when cured with water. In the present invention, water is self-curing without using a curing agent, and the curing time is adjustable using a catalyst. By mixing HEA (hydroxy ethyl acrylate) and HEMA (hydroxy ethyl methacrylate), Adhesion with the gel coat coated on the outer surface of FRP is improved.
도 1에서 [사진 1]은 촉매를 사용하지 않고 자가 경화시켜 유리섬유강화플라스틱(FRP) 성형용 Seat를 우레탄 Foam에 부착, [사진 2] Tin 촉매가 들어간 P액, R액을 합성하여 유리섬유강화플라스틱(FRP) 성형용 Seat를 우레탄 Foam에 부착, [사진 3]은 [사진1], [사진2]에 겔코트를 코팅한 사진이다.In Figure 1, [Picture 1] self-hardens without using a catalyst and attaches a seat for forming glass fiber reinforced plastic (FRP) to urethane foam, [Picture 2] synthesizes P liquid and R liquid containing Tin catalyst to form glass fiber [Picture 3] is a picture of [Picture 1] and [Picture 2] coated with gel coat.
[사진 3]의 왼쪽 사진의 경우 겔코트 작업을 한 후 칼로 코팅 된 부분을 벗겨보려 했으나 접착력이 좋아 떨어지지 않는 것을 확인할 수 있었다.In the case of the photo on the left of [Picture 3], after gel coat work, I tried to peel off the coated part with a knife, but it was confirmed that the adhesion was good and did not come off.
FRP성형용 생산공정Production process for FRP molding
P액과 R액을 1:1 혼합비를 이용하여 5~10분간 Mixing을 해준 뒤 강아지 롤러를 이용하여 유리섬유(Chopped mat 2장 + Surface mat 1장)에 PU Foam에 도포시켜 주었다. 그리고 쇠롤러를 이용하여 수지의 기포를 제거해준다.After mixing P liquid and R liquid for 5 to 10 minutes using a 1:1 mixing ratio, they were applied to PU Foam on glass fibers (2 pieces of chopped mat + 1 sheet of surface mat) using a dog roller. Then, using a steel roller, air bubbles in the resin are removed.
유리섬유에 도포한 2액형 FRP수지가 경화가 되면 24시간 후 불포화폴리에스터 겔코트를 도포하여 코팅해준다.When the two-component FRP resin applied to the glass fiber is cured, unsaturated polyester gel coat is applied and coated after 24 hours.
본 발명은 미리 도포된 유리섬유를 사용하는 것이 아닌 작업자가 직접 2액형 FRP수지를 Mixing하여 도포해야 한다는 단점을 가지고 있지만 현재 FRP 작업과 같은 공정을 통해 작업자가 사용하기 익숙하며 인체에 무해하므로 더운 날씨에도 방독면과 같은 보호복을 입지 않고 사용할 수 있다. 또한 HEA와 HEMA를 배합하여 기존 FRP 수지보다 겔코트와의 접착력 또한 상승하였다.The present invention has the disadvantage that the operator must directly mix and apply the two-component FRP resin instead of using pre-coated glass fiber. Edo can be used without wearing protective clothing such as a gas mask. In addition, by mixing HEA and HEMA, the adhesive strength with the gel coat also increased compared to the existing FRP resin.
제품 발포에 의한 소포제 및 흡습제 사용Use of antifoaming agent and moisture absorbent by product foaming
본 발명은 테이프 방식 때와 다르게 2액형 수지로 사용되기 때문에 기존 수경화 수지와 다르게 자가경화 방식으로 진행된다. 기존 2액형 Putty 방식으로 진행되었을 때 공기 중 수분과 습한 날씨의 영향을 받아 발포가 심하게 진행되었다. 이 단점을 보완하기 위해 소포제는 2가지(Non-silicone Type과 Silicone Type)와 흡습제를 사용하여 이를 보완하였다.Unlike the tape method, the present invention is used as a two-component resin, so it proceeds in a self-curing method unlike conventional hydraulic resins. When proceeding with the existing two-component putty method, foaming was severely affected by moisture in the air and humid weather. In order to compensate for this disadvantage, it was supplemented by using two antifoaming agents (Non-silicone Type and Silicone Type) and a moisture absorbent.
HEA와 HEMA의 함량비의 따른 변화Change according to the content ratio of HEA and HEMA
본 발명에서는 HEA와 HEMA를 P액에 배합함으로써 겔코트와의 결합력과 그에 따른 겔코트 강도까지 상승시킨다. HEA와 HEMA 함량 별 Test를 진행하였고 P액의 Isocyanate의 양에 비례해서 20중량% 부터 점차 낮춰가면서 실험을 진행하였다. 15~20중량% 때는 R액과 배합하였을 때 기존 점도보다 더 낮아 흘러내림이 심해 사용하기 불편하였으며 겔코트와의 접착력은 상승하나 가공성이 매우 떨어졌다. 10~15중량% 또한 같은 양상을 보였다. 5~10중량%는 기존 점도도 유지하면서 겔코트와의 접착력 또한 상승하였고 15~20중량%, 10~15중량% 배합하였을 때와 접착력 차이는 크게 느껴지지 않는다. (Cross-cut Test 시에도 접착력의 변화는 느껴지지 않음)In the present invention, by blending HEA and HEMA into the P solution, the bonding force with the gel coat and the resulting gel coat strength are increased. Tests were conducted for each HEA and HEMA content, and the experiment was conducted while gradually lowering from 20% by weight in proportion to the amount of Isocyanate in the P liquid. At 15 to 20% by weight, when mixed with R liquid, the viscosity was lower than the existing one, and it was inconvenient to use due to severe flow. 10 to 15% by weight also showed the same pattern. 5 to 10% by weight also increased the adhesive strength with the gel coat while maintaining the existing viscosity, and the difference in adhesive strength from 15 to 20% by weight and 10 to 15% by weight was not significantly felt. (Even during the cross-cut test, no change in adhesive strength was felt)
하지만 5중량% 미만으로 배합하여 진행했을 때는 접착력 상승이 미미하였다.However, when blended at less than 5% by weight, the increase in adhesive strength was insignificant.
이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 있어서 명백할 것이다.The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not deviate from the technical spirit of the present invention. It will be clear to those who have knowledge of
Claims (17)
작업 대상 배관에 단열 폼을 설치하는 단계;
상기 단열폼 상에 섬유와 폴리우레탄의 복합층을 형성하는 단계;
상기 복합층 층 상에 겔코트층을 형성하는 단계를 포함하며,
상기 폴리우레탄은 에틸기를 가지는 아크릴레이트를 포함하며,
상기 겔코트층은 불포화 폴리에스터를 포함하는 방법.In the method of insulating the pipe,
Installing the insulation foam to the piping to be worked;
Forming a composite layer of fibers and polyurethane on the insulating foam;
Forming a gel coat layer on the composite layer layer,
The polyurethane includes acrylate having an ethyl group,
The method of claim 1, wherein the gelcoat layer comprises an unsaturated polyester.
상기 단열폼은 폴리우레탄폼을 포함하는 방법.According to claim 1,
The method of claim 1, wherein the insulating foam includes polyurethane foam.
상기 복합층의 형성은,
제1액과 제2액을 혼합하여 혼합액을 얻고, 혼합액을 섬유에 가하여 복합체를 얻고, 복합체를 단열폼 상에 배치 후 경화하는 단계를 포함하는 방법.According to claim 1,
Formation of the composite layer,
A method comprising mixing the first liquid and the second liquid to obtain a mixed liquid, applying the mixed liquid to fibers to obtain a composite, and placing the composite on an insulating foam and then curing.
상기 제1액은 폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며,
상기 제2액은 폴리올 80 내지 90 중량%을 포함하는 방법.According to claim 3,
The first liquid contains 70 to 80% by weight of polyisocyanate, 10 to 20% by weight of polyol, and 5 to 10% by weight of a compound containing an ethyl group,
The second liquid comprises 80 to 90% by weight of a polyol.
상기 제1액의 NCO함량은 10 내지 20%인 방법.According to claim 4,
The NCO content of the first liquid is 10 to 20%.
상기 에틸기 포함화합물은 HEA 또는 HEMA인 방법.According to claim 4,
Wherein the ethyl group-containing compound is HEA or HEMA.
상기 제2액은 소포제, 촉매 및 흡습제 중 어느 하나를 더 포함하는 방법.According to claim 3,
The second liquid further comprises any one of a defoaming agent, a catalyst and a moisture absorbent.
상기 제2액의 소포제 함량은 1 내지 5중량%이며, 상기 촉매 함량은 1 내지 5 중량%인 방법.According to claim 7,
The antifoam content of the second liquid is 1 to 5% by weight, and the catalyst content is 1 to 5% by weight.
상기 소포제는 non-silicon type과 silicone type을 포함하는 방법.According to claim 3,
The method of claim 1, wherein the antifoaming agent includes a non-silicon type and a silicone type.
조성물은 제1액과 제2액이 혼합되어 형성되며,
상기 제1액은,
폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며,
상기 제2액은 폴리올 80 내지 90 중량% 포함하는 조성물.In the composition used to form a composite layer with fibers,
The composition is formed by mixing the first liquid and the second liquid,
The first liquid,
70 to 80% by weight of polyisocyanate, 10 to 20% by weight of polyol, and 5 to 10% by weight of a compound containing an ethyl group,
The second liquid is a composition comprising 80 to 90% by weight of polyol.
상기 복합층은 단열폼과 겔코트 사이에 형성되며,
상기 단열폼은 폴리우레탄을 포함하고,
상기 겔코트는 불포화 폴리에스터를 포함하는 조성물.According to claim 10,
The composite layer is formed between the insulating foam and the gel coat,
The insulating foam includes polyurethane,
The composition of claim 1, wherein the gelcoat comprises an unsaturated polyester.
상기 제1액은 폴리이소시아네이트 70 내지 80중량%, 폴리올 10 내지 20중량% 및 에틸기 포함 화합물 5 내지 10중량% 포함하며,
상기 제2액은 폴리올 80 내지 90 중량%을 포함하는 조성물.According to claim 10,
The first liquid contains 70 to 80% by weight of polyisocyanate, 10 to 20% by weight of polyol, and 5 to 10% by weight of a compound containing an ethyl group,
The second liquid is a composition comprising 80 to 90% by weight of polyol.
상기 제1액의 NCO함량은 10 내지 20%인 조성물.According to claim 12,
The NCO content of the first liquid is 10 to 20% of the composition.
상기 에틸기 포함화합물은 HEA 또는 HEMA인 조성물.According to claim 13,
Wherein the ethyl group-containing compound is HEA or HEMA.
상기 제2액은 소포제, 촉매 및 흡습제 중 어느 하나를 더 포함하는 조성물.According to claim 14,
Wherein the second liquid further comprises any one of a defoaming agent, a catalyst and a moisture absorbent.
상기 제2액의 소포제 함량은 1 내지 5중량%이며, 상기 촉매 함량은 1 내지 5 중량%인 조성물.According to claim 15,
The antifoaming agent content of the second liquid is 1 to 5% by weight, the catalyst content is 1 to 5% by weight of the composition.
상기 소포제는 non-silicon type과 silicone type을 포함하는 조성물.
According to claim 16,
The antifoaming composition comprising a non-silicon type and a silicone type.
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