SU712423A1

SU712423A1 - Polymeric binder

Info

Publication number: SU712423A1
Application number: SU782639452A
Authority: SU
Inventors: Мечисловас Антанович Бейноравичюс; Юозас Игнович Прапестис; Людас Пранович Дамбраускас; Александра Александровна Соколова; Рима Сергеевна Жданова
Priority date: 1978-07-07
Filing date: 1978-07-07
Publication date: 1980-01-30

Description

1one

Изобретение относитс к области теплоизол н:ионных строительных материалов, в частности к изготовлению синтетических св зующих на основе фенолформальдегидных смол дл изделий из минеральной или стекл нной ваты.The invention relates to the field of thermal insulation: ionic building materials, in particular to the manufacture of synthetic binders based on phenol-formaldehyde resins for products made of mineral or glass wool.

Известно полимерное св зующее, содержащее фенолформальдегидную смолу и непредельное растительное масло 1.A polymer binder containing phenol-formaldehyde resin and unsaturated vegetable oil 1 is known.

Недостатком такого полимерного св зующего вл етс невысока стабильность физико-мехапических показателей изделий из минеральной или стекл нной ваты на его основе в услови х повышенной влажности .The disadvantage of such a polymeric binder is the low stability of the physicomechanical parameters of products made of mineral or glass wool based on it in conditions of high humidity.

Целью изобретени вл етс повышение стабильности физико-механических свойств изделий из минеральной или стекл нной ваты на основе св зующего в услови х повышенной влажности.The aim of the invention is to increase the stability of the physicomechanical properties of mineral or glass wool products based on a binder under conditions of high humidity.

Поставленна цель достигаетс тем, что св зующее содержит талловое масло-сырец при следующем соотношении компонентов , вес. %:The goal is achieved by the fact that the binder contains tall tallow oil in the following ratio of components, weight. %:

Фенолформальдегидна смола 70-99Phenol formaldehyde resin 70-99

Талловое масло-сырец1-30Tall crude oil1-30

Дл получени св зующего примен ют 50%-ные водные растворы фенолосниртов, синтезированных в промышленных услови х с применением в качестве катализатора гидроокиси натри .To obtain a binder, 50% aqueous solutions of fenolidets synthesized under industrial conditions using sodium hydroxide as a catalyst are used.

Талловое масло-сырец получают разло Аением минеральной кислотой сульфатного мыла - отхода выработки сульфатной целлюлозы. Оно представл ет собой смесь наход щихс в древесине смол ных и жирных кислот, а также некоторого количества неомыл емых и окисленных веществ. Дл иолучени св зующего примен ют талловое масло-сырец следующего состава, вес. %:Tall crude oil is obtained by sulphate soap - a waste of sulphate pulp production - by mineral acid. It is a mixture of resin and fatty acids in wood, as well as a certain amount of unwashed and oxidized substances. To obtain a binder, tall crude oil of the following composition is used, weight. %:

Смол ные кислоты26-45Resin acids26-45

Лчирные кислоты37-54Lchirnye acids37-54

Пеомыл емые вещества8-18Removed substances8-18

Окисленные веществаОстальноеOxidized Substances

Пример 1. Дл приготовлени 500 кг 12%-ного полимерного св зующего, содержащего 99 вес.% фенолформальдегидной смолы и 1% таллового масла-сырца, в смеситель или бак-мешалку загружают при комнатной температуре 118,8 кг 50%-ного водного раствора фенолформальдегиднойExample 1. To prepare 500 kg of a 12% polymer binder containing 99% by weight of phenol-formaldehyde resin and 1% of tall crude oil, 118.8 kg of a 50% aqueous solution was charged into a mixer or stirred tank at room temperature. phenol formaldehyde

Claims

with resins and with stirring, 0.6 kg of tall tallow raw oil, 383 kg of water are added and mixed for 5-10 minutes. A stable aqueous binder emulsion is formed. Example

2. Do the same as Irimer 1, the ratio of components is as follows, wt%: Phenol-formaldehyde resin80 Tall oil / crude 20 5 Example

3. Proceed analogously to example 1, the ratio of the following components, weight. %: Phenol-formaldehyde resin70 Tall crude oil30 10 The prepared binder emulsion is applied to the mineral or glass fiber by any well-known method, mainly by spraying, in a fiber deposition chamber before the carpet is formed. After the carpet has been compacted, it is heat treated to cure the polymer binder. The heat treatment mode is similar to that commonly used in the production of mineral wool or 20 glass wool products made on a phenolic binder. The time of gelatinization of the binder of 50% concentration is determined according to GOST 20907-75.25 The volatility of the binder is determined by the weight loss of the sample, previously dried to constant weight at 100 ° C, after keeping it in an oven at 180 ° C for 60 min.30 The surface tension of the binder at 50% concentration, which characterizes its wetting ability, is determined by the Rebinder method. To determine the strength properties and moisture resistance of the damaged binder residue, laboratory samples are made on the basis of an inert filler — quartz sand (GOST 6139-70) and a binder (the content of the latter is 40 3 wt.% Of the total mass). After the specimens have been cured, their ultimate hardness is determined. The results of testing the strength properties of the cured binder, as well as the results of determining the technological properties of the binder at 50% concentration are given in the table. Polymer binder containing phenol-formaldehyde resin and unsaturated vegetable oil, characterized in that, in order to increase the stability of the physicomechanical properties of mineral or glass wool products based on it under conditions of high humidity, it contains tallow raw oil with the following ratio of components, weight. %: Phenol-formaldehyde resin 70-99 Tall crude oil1-30 Sources of information taken into account during the examination 1. Patent of Germany № 1071945, cl. 39В 22/02, 1960 (prototype).