SU636307A1 - Method of preparing pulp for thermally stable paper - Google Patents
Method of preparing pulp for thermally stable paperInfo
- Publication number
- SU636307A1 SU636307A1 SU762398249A SU2398249A SU636307A1 SU 636307 A1 SU636307 A1 SU 636307A1 SU 762398249 A SU762398249 A SU 762398249A SU 2398249 A SU2398249 A SU 2398249A SU 636307 A1 SU636307 A1 SU 636307A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thermally stable
- stable paper
- preparing pulp
- chips
- pulp
- Prior art date
Links
Landscapes
- Paper (AREA)
Description
щепы при погружении ее в сол ровую фракцию щепу предварительно высушивают до относитепыюй влажности погружением ее в ту же жидкость, но с температурой 120-С в течение 1-2мин. chips, when immersed in the salt fraction, the chips are pre-dried to relative humidity by immersing it in the same liquid, but with a temperature of 120 ° C for 1-2 minutes.
По истечении времени тепловой обработки сол рова фракци свободно стекает со щепы. Затем щепу подвергают обыч ной сульфатной варке в лабораторном автоклаве по следующему режиму:After the time of heat treatment, the salt fraction flows freely from the chips. Then the chips are subjected to ordinary sulphate cooking in a laboratory autoclave according to the following mode:
Расход реактивной щелочи 19% в Consumption of reactive alkali 19% in
(Зульфидность 24%(Sulfidity 24%
Врем варки (общее) 2 час; 30 минCooking time (total) 2 hours; 30 min
Температура варки 165 С,Cooking temperature 165 С,
В процессе сульфатной варки, щепуIn the process of sulphate cooking, chips
проваривают до Волокнистой массы, которую ргаэмалывают до 60 ШР на лабораторном ролле. Отливки получают весом около 130 г/м, толщиной 190-2ОО мк и имекгг следующие маханические показатели: разрывна длина 6570 м, 5650 двойных перегибов, сопротивление продавливанию 7,97 кгс/см, сопротивление раздиранию 289 г,boil to a fibrous mass, which rgaelamyvayut up to 60 SR on a laboratory roll. Castings receive a weight of about 130 g / m, a thickness of 190-2OO microns and an Imegg following mechanical parameters: breaking length of 6570 m, 5650 double kinks, bursting resistance of 7.97 kgf / cm, tearing strength of 289 g,
Устойчивость к тепловому старению определ ют по ГОСТу 16849--71 в сухом состо нии в течение 10 час при 160°С.Resistance to heat aging is determined according to GOST 16849--71 in a dry state for 10 hours at 160 ° C.
Механические показатели и потер прочности отливок после теоретического старени в сравнении с известным способом активации приведены в таблице.The mechanical indicators and loss of strength of castings after theoretical aging in comparison with the known method of activation are shown in the table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762398249A SU636307A1 (en) | 1976-09-07 | 1976-09-07 | Method of preparing pulp for thermally stable paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762398249A SU636307A1 (en) | 1976-09-07 | 1976-09-07 | Method of preparing pulp for thermally stable paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU636307A1 true SU636307A1 (en) | 1978-12-05 |
Family
ID=20674803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762398249A SU636307A1 (en) | 1976-09-07 | 1976-09-07 | Method of preparing pulp for thermally stable paper |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU636307A1 (en) |
-
1976
- 1976-09-07 SU SU762398249A patent/SU636307A1/en active
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