RU1213612C - Method of producing powder materials from thermoplasts - Google Patents

Description

31213612 4

The invention relates to the field of the transition material before melt production, as well as polymer processing, namely, production of the material with grinding material at temperature dispersed polymer materials below the solidification temperature, fishing, and can be used in chemical when specific energy consumption at the breakdown of industry, for the production of S, they noticeably increase in comparison with polymeric materials intended for energy consumption, which are required for raera for subsequent processing of this product, and bending and grinding of solid material for producing polymer coatings at higher temperatures. Other methods used for corrosion protection are low metals. performance and relatively not known. A method for producing psfoshko- is known. juice the degree of dispersion of the obtained semi-dimensional materials by pyvma powders.

j "4ecKor0 melt spraying. Objective 1. (inventions - reduction of specific

 A device that implements SPOS06, the energy consumption for grinding, and the increase in feed through channels. For water, the productivity and degree of dispersion of the powder and the compressed reservoir are increased, “the bone flow of the obtained powder, the thermocompound with an output of € oop, and an output. is achieved by that. what's in the way

 e July 1, 11. Subsequent to the fact that powder materials are obtained from t $ r-hwi5 raig8OZ {Shkasyashchia, 8, the output of the flight, including the fiarpes thermoplane. atwae yblimira disiergyr with a thickness of 20 hundred and crushing it by exposing f a microparticles forming after pressure and shear strain from 0.5-50 "QpoUtoK. one time cooling, heating

., The production of the powder in this way tpe-carry out pre-temperatures of 3-40 C are necessary: “significant: 1. Зн ргет1 4 esk1} low cost, and also the softening temperature of the thermoplastic, the powdered powders have a low 25 and cooling to a temperature of 3-60 C dporso (t and poor Flowability mz- "e- below the heating temperature at pressure

 a regular form of the forming particles, 0.5-100 MPa, In addition to shr, such co-operation does not succeed. Shear deformations arising at

 to process powder polymers under bottom cooling of the material internal volatility - itwM value of the melt index, in 30 times lead to cracking and - -Frequency polyethylene grinding material to the required

Methods for preparing the degree of dirpidity are also known. In this case, the degree of powder is obtained by mechanically grinding the dispersion of the obtained powder of the relevant materials. Most of all, from the pressure values used, the method of Shear and shear formation, heating temperature and terial is fragile due to the damp temperature of cooling, deep cooling JC and Alzoaanibm in mechanical displacement they receive; for example, in an extruder or material / in this state {2 |. in a grinding mill equipped with heaters

However, the use of a cryogenic rotary installation.

call makes production more expensive and three Example T. In a plant with a diameter

6vet using a special auger, rotor (cooler and grinding rotor. Equipment from a 20 mm material, a granular lo is loaded, capable of operating at low temperature LDPE with a melt index of 7.0 (grade ratra. 16803-070) heating it up to 104 ° C, which is

Closest to the invention at a lower melting point, i.e. times. the technical nature and the achieved softening rate and under a pressure of 20 MPa give the result of the method obtained by powder in a cooler and mill of thin thermoplastic materials, grinding, where the polymer is cooled at 54 ° С at VKA) The heating thermoplastic to tempera - 50 at the same time subjected to deformation of the rutra, which provides a shear 60 As a result, a melt powder is obtained, vrefo is milled by average particle size of Yumkm. produced “1 0, MfTa If shear strain, powder water productivity 0.35 kg / h specific — from 0.5 to 50 while cooled energy consumption for its production 160 research institutes of the melt to a temperature of 3-46 ° C (kWh) / t.

the same temperature hardened1 1 polymer EXAMPLE 2 (according to the method. In grinding 3J, the main unit with a rotor diameter of 20

The disadvantage of this method is that they load the milled LDPE with the highest energy costs, with a temperature of 20 ° C and a different index with the need to heat the polymer melt 7.0. The polymer is melted by heating

before and under a pressure of 20 MPa, it is cooled by 40 ° C during the solidification of chlorine hardening under the influence of shear strain 50. As a result, a powder with an average particle size of 13 microns is obtained. Powder productivity is 0.25 kg / h, specific energy consumption is 250 (kWh) / t.

Example 3. A granulated LDPE with a high temperature and a melt index of 2.0 is loaded into a grinder | Yolimer is heated to. and under a pressure of 20 MPa, they hunt at S4 ° C under simultaneous action of shear strain 10. As a result, a powder with an average size of 00 μm is obtained. The powder fineness is .52 "sr / h, the specific energy consumption for grinding is 30 & {k8t 0 / g.

PRI me R 4 (n0 cnoco6r {33); The granular installation of the rotor with a diameter of 1t mm is granulated with a melt index granule. The polymer paCitAaen tor “having warmed up to, and under a pressure of 201 JVA, they cool Ni 40 ° C below the temperature of the solidification under the simultaneous action of strain 1 (I) shear. In yuzultet, GO powder is produced with an average size of MfCM stits. Ро е е од ит «« «о about powder 3.7 kg / h, specific energy consumption 520 {kW h) / g.

Example 5-29. Polymer Materials are milled in a plant with a rotor diameter of 100 mm; the initial temperature of the materials is 20 C. The values of the remaining parameters

process and parameters of the obtained powder material are given in the table.

As can be seen from the data in the table, the proposed method provides the production of powders from polymeric materials with higher performance and degree of dispersion, as well as with lower specific 9 non-consumption compared to the prototype method, if the heating temperature of the polymeric material is 3-40 ° C lower its temperature is softer, 8 (1 | edb | 1n & cooling temperature nd below the heating temperature.

if the volimzr material is heated above the specified temperature, then s

of processing, a particle passes into a rasav vt Н0 is crushed, its temperature is

not lower than solidification temperature. AT

{zhzu is specific, atraty on the crushed it is at the same time the average of particles received increases

powder.

(56) German Patent h 1454760, cl. 39a / 12, published. l46S,

U.S. Patent 3,777,729, cl. 241-17. public. 19TV;

Copyright JGBMjD (ftT $ nfe6Teo USSR fttt 1061365, class y: & 9 t / t2.1982 ..

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Fbrmu and choose

PRODUCTION METHOD (o

MATERIALS AND $ TEMOSHCHOTOE. incl. heating 1c {pH from -;

smaller / its paths suzAeyStbi / (ny and sdbigbshh deformation of 0.5 to VO at the same time cooling, characterized in that for the purpose of reduction yjDte / ib; V Compiled by A. Kulakoaa Editor A. Kondrakhina Tehred M. Morgenthal

Order 3241

Circulation

NGO Pois “Rospatent. 113035. Moscow, Zh-ZB. Rauska nab., 4/5

Production and Publishing Plant Patent, Uzhhorod, 101 Gagarin St.

SALE Tvblici.

35

40

energy costs, increase

The producer of the temperature and the degree of dispersion get 1e rg lioFWOP heating rsuscest-1 at cc d (; te1m1per | pkEP - temperature) |) az11y ermosh1asta. aV 6x 1 even 1 N1EI DRC fCMi niepaTypbi at 3 6СГС viMft О avsi npif pressure

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