SU441807A1 - The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention - Google Patents

The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention

Info

Publication number
SU441807A1
SU441807A1 SU1881617A SU1881617A SU441807A1 SU 441807 A1 SU441807 A1 SU 441807A1 SU 1881617 A SU1881617 A SU 1881617A SU 1881617 A SU1881617 A SU 1881617A SU 441807 A1 SU441807 A1 SU 441807A1
Authority
SU
USSR - Soviet Union
Prior art keywords
products
fluoroplastic
subject invention
following formulation
waste
Prior art date
Application number
SU1881617A
Other languages
Russian (ru)
Inventor
В.М. Холодова
К.В. Воеводин
Н.И. Холодов
С.А. Назаров
А.М. Гуськов
А.Л. Партанский
М.А. Скребков
Original Assignee
Предприятие П/Я Г-4904
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я Г-4904 filed Critical Предприятие П/Я Г-4904
Priority to SU1881617A priority Critical patent/SU441807A1/en
Application granted granted Critical
Publication of SU441807A1 publication Critical patent/SU441807A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Description

Изобретение относитс  к технологии получени  изделий из фторопластовых отходов.The invention relates to a process for the production of articles from fluoroplastic wastes.

Актуальность разработки способов использоваии  вторичного политетрафторэтилена обусловлена тем, что нри эксплуатации он не подвергаетс  окислению и старению, обладает цен-ныМИ практическими авойСТ1ва-ми и весьма дорог. Количество идущего в отходы вторичного нолитетрафторэтилена из бракованных заготовок, изделий и отходов механической o6pai6oTKH, а тажже остаточного материала отработанных изделий составл ет от 65 до 35% первоначального выпуска.The relevance of developing methods of using recycled polytetrafluoroethylene is due to the fact that it is not subjected to oxidation and aging during operation, it is valuable in practice and is very expensive. The amount of waste recycled from the reject billets, products, and mechanical waste is about 6% and the residual material of the waste products is 65 to 35% of the initial production.

Известен способ утилизации отходов - получение изделий из вторичного фторопласта-4 по технологии одно- или двукратного спекаНи  крошки фторОПлаСта-4 с .размером частиц 0,5-3,0 жл в металлических прессформах закрытого типа под давлением, где происходит, термическа  сварка фторопласта-4. Издели  получаютс  черното щвета, с большой пористостью и с низкими физико-механическими свойствами.The known method of waste utilization is the production of products from the secondary fluoroplast-4 using the technology of single or double sintering of Fluoroplast-4 crumbs with a particle size of 0.5-3.0 W in metal molds of the closed type under pressure, where thermal welding of the fluoroplastic occurs. four. The products are black schite, with high porosity and low physical and mechanical properties.

Прочность на разрыв этих изделий обычно в 4-5 раз, а относительное удлинение в 8- 10 раз меньше, чем у изделий, изготовленных при спекании первичного фторопласта-4. Сам способ  вл етс  к тому же малопроизводительным , дорогосто щим и не получил распространени .The tensile strength of these products is usually 4-5 times, and the relative elongation is 8-10 times less than that of products made during sintering of the primary fluoroplast-4. The method itself is also inefficient, expensive and not widely used.

Цель изобретени  состоит в разработке такого способа получени  изделий из отходов производства н остаточного материала отработанных изделий из фторопласта-4, которыйThe purpose of the invention is to develop such a method of obtaining products from waste production and residual material waste products from fluoroplast-4, which

позвол ет производить термообработку изделий в свободном состо нии дл  получени  изделий с необходимыми физико-механическими свойствами. При этом усовершенствуетс  технологи  получени  изделий и увеличиваетс  производительность труда.allows the heat treatment of products in a free state to obtain products with the required physical and mechanical properties. This will improve the technology of obtaining products and increase productivity.

Это достигаетс  измельчением отходов фторопласта-4 и остаточного лгатериала .отработанных изделий до среднего размера частиц 10-80 мк, затем прессованием при удельномThis is achieved by grinding the waste fluoroplast-4 and the residual material of the waste products to an average particle size of 10-80 microns, then pressing at a specific

давлении 400-800 кг/см с выдержкой во врем  прессовани  2-3 мин, спеканием в свободном состо нии и дополнительным вальцеванием изделий в виде нластин при температуре валКов 80° С.a pressure of 400-800 kg / cm with a holding time during pressing for 2-3 minutes, sintering in a free state and additional rolling of products in the form of nlastins at a roll temperature of 80 ° C.

Технологи  получени  изделий из отходоп фторопласта-4 н остаточного материала отработанных изделий из фторопласта-4 заключаетс  в следующем.The technology for producing products from fluoroplast-4 waste and n residual material from fluoroplast-4 waste products is as follows.

Вторичный фторопласт-4 в виде бракованных и спеченных изделий, отходов обработки и остаточного материала отработанных изделий до поступлени  на измельчение подвергаетс  очистке от масел п пыли 1-2-часовой термической обработкой кусков и стружек приSecondary fluoroplast-4 in the form of defective and sintered products, processing waste and residual material of waste products before being crushed is cleaned from oils and dust 1-2-hour heat treatment of lumps and shavings at

300-370° СС произвольно быстрым подн тием300-370 ° SS arbitrarily fast lift

SU1881617A 1973-02-12 1973-02-12 The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention SU441807A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1881617A SU441807A1 (en) 1973-02-12 1973-02-12 The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1881617A SU441807A1 (en) 1973-02-12 1973-02-12 The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention

Publications (1)

Publication Number Publication Date
SU441807A1 true SU441807A1 (en) 1975-08-05

Family

ID=20542078

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1881617A SU441807A1 (en) 1973-02-12 1973-02-12 The method of obtaining products from secondary sintered fluoroplastic -4 with the following formulation of the subject invention

Country Status (1)

Country Link
SU (1) SU441807A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015891A1 (en) * 1994-11-24 1996-05-30 Ici Australia Operations Proprietary Limited Powder coating recycling process
RU2497846C1 (en) * 2012-04-24 2013-11-10 Федеральное государственное бюджетное учреждение науки Байкальский институт природопользования Сибирского отделения Российской академии наук (БИП СО РАН) Method of recycling polytetrafluoroethylene wastes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015891A1 (en) * 1994-11-24 1996-05-30 Ici Australia Operations Proprietary Limited Powder coating recycling process
RU2497846C1 (en) * 2012-04-24 2013-11-10 Федеральное государственное бюджетное учреждение науки Байкальский институт природопользования Сибирского отделения Российской академии наук (БИП СО РАН) Method of recycling polytetrafluoroethylene wastes

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