KR790001484B1

KR790001484B1 - Manafacture process of board

Info

Publication number: KR790001484B1
Application number: KR770002066A
Authority: KR
Inventors: 송영흠
Original assignee: 오정태; 서림산업주식회사; 송영흠
Priority date: 1977-09-02
Filing date: 1977-09-02
Publication date: 1979-10-23

Abstract

A method was described for manufacturing of veneer boards from pulp scrap. The pulp scrap contg. 8-10% (by wgt.) water content was treated with 10-50% rosin-modified phenol resin and 3-15% acid catalyst such as P-toluenesulfonic acid, H3-PO4 or HCl to improve cellulose comp. of the scrap. The resulting material was pressed to 50kg/cm2 at 130-150≰C for 40-60min. to give water-resistant veneer boards.

Description

Manufacturing method of plywood (S.R tex) using pulp residue as a main material

본 발명은 펄프잔재를 주재로한 합판의 제조방법에 관한 것이며, 더욱 상세히 설명하면, 수분함유량을 8-10%로 조정한 펼프잔재(스크랍 Scraps)에 로진 변성 폐놀수지 10-50 중량% 및 ρ-톨루엔설폰산, 인산, 혹은 염산등의 산촉매(酸觸媒) 3-15중량을 첨가하여 가압 또는 가열하에서 성형하는 것을 특징으로 하는 펄프잔재를 주재로 하는 합판류의 제조방법에 관한 것이다.The present invention relates to a method for producing plywood mainly made of pulp residue, and more specifically, 10-50% by weight of rosin-modified waste paper resin in scrap residues adjusted to water content of 8-10% and The present invention relates to a method for producing plywood, mainly comprising pulp residue, characterized by adding 3 to 15 weights of an acid catalyst such as p-toluenesulfonic acid, phosphoric acid, or hydrochloric acid and molding under pressure or heating.

즉, 본 발명은 펄프 제조공정에 있어서 제지에 필요한 섬유질을 채취한 다음의 폐기물을 재 이용하려는 것이다. 이러한 폐기물은 0.01-0.2μ의 극히 미세한 리그닌질, 페프닌질, 헤미셀루로오즈등을 함유하는 비용해성 물질로서 가연성이나 점착성도 없고 중량제든가 보온제로서도 사용할수 없을뿐만 아니라 부폐할 때에는 악취가 커서 처지하는데도 곤란한 것이다.That is, the present invention is intended to reuse the waste after collecting the fibers required for papermaking in the pulp manufacturing process. These wastes are extremely insoluble materials containing 0.01-0.2μ of extremely fine lignin, peppenin, hemicellulose, etc., which are not flammable or tacky, can not be used as a weight or warming agent, and have a bad smell when they are disposed of. It is also difficult to sag.

따라서 하천과 같은곳에 버릴수 없는 것이다. 지금까지 이러한 폐기물의 이용법으로서 결합체, 시멘트 분산제(分散劑), 피혁탈지제, 토양개량제등의 제조를 시도하였으나 아직 실용화 되지 못하고 있다.Therefore, it can not be discarded in the same place as the river. So far, the use of such waste has been tried to manufacture a binder, cement dispersant, leather degreasing agent, soil improver, etc., but has not been put to practical use.

본 발명은 이와같은 처리가 곤란한 산업공해물질인 펄프 폐기물을 합판 제조의 주재료로서 이용하고저 하는 것이다. 즉, 이러한 폐기물에 로진변성 페놀수지를 사용하여 화학적 반응을 일으키게하여 섬유질을 향상시켜 목질화(木質化)하는 것이며, 기타 여기에 무기질을 첨가함으로서 내약품성, 내수성, 내화성, 내충격성, 유연성 또는 단열성을 갖는 각종 재질의 합판류를 수지의 경화 결합에 의하여 제조하는 것이다.The present invention utilizes pulp waste, which is an industrial pollutant that is difficult to treat, as a main material for plywood manufacture. That is, rosin-modified phenolic resins are used to cause chemical reactions to improve the fiber and to make it woody, and by adding minerals therein, chemical resistance, water resistance, fire resistance, impact resistance, flexibility, or thermal insulation Plywoods of various materials to be produced are produced by curing bonding of resin.

또한 얻어지는 합판에 유연성을 부여하기 위해서는 갈대를 수산(蓚酸)으로 pH 2-3으로 맞춘 다음 가열하여 믹샤로 입상으로 한 갈대 입상물(粒狀物) 10-30중량%를 사용하면 좋고, 또한 주재인 펄프잔재에 대한 "로진 변성페놀수지"의 사용량은 10-50중량% 이지만 가장 좋기로는 10-20중량%이다.In addition, in order to give flexibility to the obtained plywood, it is good to use 10-30% by weight of the reed granular material which has been made to adjust the reed to pH 2-3 with hydroxyl and then heated and granulated with a mixer. The amount of "rosin modified phenolic resin" used for phosphorus pulp residue is 10-50% by weight, but most preferably 10-20% by weight.

그리고 주재인 펄프잔재, 로진변성페놀수지를 혼합하여 이를 가열 가압하여 형가공(型加工)하면 수지가 주재및 갈대 입상물과 화학반응을 일으켜서 결합 경화하여 뛰어난 합판을 얻게되는 것이지만 이때 ρ-톨루엔설폰산이나 염산, 인산등의 산을 수지분의 3-15중량% 이상을 사용할때는 수지의 결합도를 저하시키므로 좋지 않다.When pulp residue and rosin-modified phenolic resin are mixed and heated and pressurized to mold processing, the resin undergoes chemical reaction with the host and reed granules to bond and harden to obtain excellent plywood. When using acid such as phenolic acid, hydrochloric acid or phosphoric acid more than 3-15% by weight of the resin powder, it is not good because the bonding of the resin is reduced.

또한 가열 경화의 경우에는 130-150℃에서 40-60분간이 적당하다. 또 방염(防炎), 방화성의 합판류로 하는 경우에는 방화성 수용액인 염화메치렌을 고형물(固形物)의 5%정도 첨가하면 좋고, 또는 망초(芒硝)인산소오다, 붕사와 같은 방화성의 소오다류를 고형물의 3-5% 첨가해도 좋다.In addition, 40-60 minutes are suitable at 130-150 degreeC in the case of heat-hardening. In the case of flame-retardant or fire-retardant plywood, about 5% of solids of fire-resistant aqueous solution may be added, or fire-retardant soils such as sodium phosphate and borax. The polysaccharides may be added at 3-5% of solids.

이하 본 발명을 상세히 설명하기 위해 실시예를 예로든다.Hereinafter, examples will be described in order to explain the present invention in detail.

[실시예]EXAMPLE

[제1공정][Step 1]

(a) 주재의 조정.(a) Adjustment of Presidency.

펄프잔재 10kg을 20인치 원심분리기에 넣고 3분간 탈수시켜서 수분함유량 8%의 주재를 엄는다.10 kg of pulp residue is placed in a 20-inch centrifuge and dehydrated for 3 minutes to moisten the main ingredient with 8% moisture content.

(b) 갈대 입상물의 제조.(b) Preparation of Reed Granules.

갈대 10kg, 물30kg을 용기에 넣어 수산으로 pH 2-3이 되게 조정하여 150-200℃에서 30-120분간 가열한후 믹샤로 일정한 입상물을 만든다.10 kg of reed and 30 kg of water are placed in a container, adjusted to pH 2-3 with aquatic acid, heated at 150-200 ° C. for 30-120 minutes, and then a constant granule is made with a mixer.

(c) 로진 변성페놀수지의 제조.(c) Preparation of rosin modified phenolic resin.

반응용기에 크레졸 400중량부, 33%의 가성소오다, 6.4 중량부를 넣은 다음 반응온도를 60-65℃로 유지하도록 용기를 냉각하면서 서서히 30%의 포루마린 600중량부를 첨가하여 60℃에서 6시간 가열반응한후 감압(滅壓)하면서 반투명으로 될때까지 냉각하면서 탈수한다.400 parts by weight of cresol, 33% of caustic soda and 6.4 parts by weight were added to the reaction vessel, and then 600 parts by weight of 30% of forumaline was gradually added while cooling the vessel to maintain the reaction temperature at 60-65 ° C. After heating, dehydrate while cooling until it becomes semi-transparent under reduced pressure.

한편, 별도의 반응기에 로진 2,700중량부를 넣고 여기에 상기에서 얻어질 크레졸-포름 알데히드수지를 가하고 260℃로 가열하여 그 온도를 유지하면서 미반응 크레졸을 제거한다. 그런 다음 270중량부의 에치렌 크리콜을 가하여 0.35중량부의 마그네슘을 촉매로하여 에스텔화를 하고 로진변성페놀수지를 얻는다.Meanwhile, 2,700 parts by weight of rosin in a separate reactor was added thereto, and the cresol-formaldehyde resin obtained above was added thereto and heated to 260 ° C. to remove unreacted cresol while maintaining the temperature. Then, 270 parts by weight of ethylene glycol is added to esterify with 0.35 parts by weight of magnesium as a catalyst to obtain a rosin modified phenolic resin.

[제2공정][Step 2]

상기의 주재(a) 80중략부에 갈대 입상물(b)을 10중량부, 로진변성페놀수지(c) 10중량부를 가하여 충분히 교반한후 130℃에서 50kg/cm²로 30-60초에 프레스 가공하여 내수성이 뛰어난 합판을 얻게되는 것이다.10 parts by weight of the reed granular material (b) and 10 parts by weight of the rosin-modified phenolic resin (c) were added to the main body (a), and 80 parts by weight were sufficiently stirred, and then pressed at 30-60 seconds at 50 kg / cm ² at 130 ° C. By processing, you get a plywood with excellent water resistance.

Claims

10-50% by weight of rosin-modified phenolic resin and 3-15% by weight of an acid catalyst such as ρ-toluenesulfonic acid, phosphoric acid, or hydrochloric acid are added to the pulp residue having a water content of 8-10%. A method for producing plywood, mainly comprising pulp residue, characterized in that.