SU657043A1 - Polymer composition - Google Patents

Description

The issue relates to the field of obtaining polymer compositions based on β-epoxy-block copolymers intended for the production of extruded materials such as: spruce in various branches of the national economy, for example, in instrument-making, shipbuilding, etc. D. A polymeric composition is known, including epoxy-block copolymer and filler - asbestos, graphite, barite, fiberglass, etc. l. A disadvantage of the known composition is a long curing time in the mold and, as a result, low productivity in the manufacture of products based on it. The purpose of the invention is to reduce the curing time and increase the productivity of labor when pressed. The goal is achieved by the composition of a -4150 composition, which includes an epoxy-newbol block copolymer and a filler, contains ground polyester metal fiberglass with a particle size of 5-600 microns as a filler, with the following ratio components, parts by weight: EPOXY ON-BLOCK block copolymer Crushed polyethylene maleate fiberglass The specified filler is obtained by abrasive grinding of glass production waste Polyester sheet polyplastic obtained by continuous molding of unsaturated polyelectric resin PC-1 resin and glass fiber ZhS-1 in the presence of a catalytic system - isopropyl benzene hydroperoxide and cobalt naphthenate styrene solution. The fiberglass is cured at 85-92 ° C for 10-15 minutes. Trimmed cured fiberglass is then subjected to abrasive grinding. The resulting filler with a dispersion of 550 μm contains the organic part in the form of a cured resin and mineral - fiberglass. The properties of the organic-mineral filler are given in the table. As epoxy-block copolymers (ENBS), which are copolymers of epoxy and volon phonol-formaldehyde CMO, ENBM grades are used: b E18N-60 (60 parts by weight of ED-16 and 40 by weight, including novolachnoy resins SF-010) TU - b - 05 - 041 - 315 - 71 and 6EI-60 (60 weight, h. ED-16 and 40 weight.h, SF-0112) TU - 6 - 05 - 031 - 493 - 71 If necessary, pigments can be added to the composition. A press position is obtained by mixing the initial components in a ball mill for 0.5–1 h. Then, in a pre-heated mold to 190c, the calculated amount of the finished press position with a particle size of 5–600 µm is filled. The press mold with a press powder is held in a press without pressure for 3 minutes to evenly heat and melt. Preferred pressing mode: temperature 1–5–205 ° C; specific pressure 25–50 times a time / pressure under pressure 0.51; 0 min / mm of product thickness; In a heating press and press powder, chemical interaction of epoxy and phenolic hydroxyls occurs - ENBS with free carboxyl and hydroxyl groups of organo-mineral filler, which leads to a drastic reduction in gelatinization time, Example 1. To obtain press powder, an epoxy-bonded copolymer (ENBS) grade 6E18H-60-1, organomine is mixed in a ball mill -sectoral a filler before put yuschy a milled fiberglass ether poly (OST-6-11- -390-75) to the magnitude of 5-50 m chabtits A composition containing 50 wt.% ENBS and 50 wt.% filler. The pre-heated to 190 ° C mold is filled in with the calculated amount of the finished press powder. The mold with press powder is held on the press without pressure for 3 minutes to evenly heat and melt the press mold. Pressing is carried out at 190 ° C and a pressure of 25 MN / m. Press time 1 min per 1 mm of the thickness of the product. The pressed sample is removed from the mold and cured at 180 for 6 hours. Example 2. To obtain a press powder, an ENBS grade 6EI-60-1, ground and sieved through a sieve of 0.500, is mixed with an organic-mineral filler in a ball mill for 1 h. A mixture is obtained containing 80% by weight of ENBS and 20% by weight of filler. The mode of pressing and curing is similar to Example 1. Example 3, Differs from Example 2 in that in ball mill 3 a mixture is obtained containing 10 wt.% ENVS and 90 wt.% Organic-mineral filler. The pressing and curing mode is similar to examples 1 and 2, Example 4. To obtain a press material, 50% by weight of epoxy-block copolymer copolymer (ENBS) grade 6EI-60-1, ground and sieved through 0.50 sieve, is taken, mixed with 50 weight. % organic filler, which is a waste polyester fiberglass with a particle size of 50-600 microns and 0.1 g of dye. Mixing is carried out in a ball mill for 1 h. A calculated amount of the prepared press powder is poured into the preheated mold. The powder mold is held on the press without pressure for 3-5 minutes to evenly heat and melt the press powder. The pressing was carried out at 165 ° C and a pressure of 25 MN / m; the pressing time was 1 min per 1 mm of the thickness of the product. The pressed sample is removed from the mold and cured at 180 ° C for 6 hours. Example 5. To obtain a press material, 50% by weight of an epoxy-block-block copolymer (ENBS) grade 6EI-60-1, ground and sieved through a sieve of 0.05, is taken. It is mixed with 50% by weight of an organic-mineral filler, which is a waste of polyester fiberglass with a particle size of 50-600 microns. Mixing is carried out in a ball mill for 1 hour. The calculated amount of the prepared press powder is filled into the mold, preheated to 21-5 ° C. The powder mold is held on the press without pressure for 35 minutes to evenly heat and melt the press powder. Pressing is carried out at 215 ° C and a specific pressure of 30 MN / m. Pressing time 1 min for 1 iviM product thickness. The pressed sample is removed from the mold and cured at 6 hours. Example 6. To obtain a press material, 50% by weight ENBS of the 6EI-60-1 grade, ground and sieved through a sieve of 0.050, is mixed with 50% by weight organic filler, which is a waste polyester fiberglass with a size of 10 particles of 50-600 microns. Mixing is carried out in a ball mill for 1 hour, p In a mold preheated to 190 ° C, pour the calculated amount of the finished press powder into sleep. The powder mold is held on the press without pressure for 35 minutes to evenly heat and melt the press powder. Pressing is carried out at a specific pressure of 15 Mn / m. Pressing time

1 min per 1 mm of the product thickness. The pressed sample is removed from the mold and cured for 6 hours.

Example 7. To obtain a press material, 50 wt.% Of ENBS grade BE-60-1, ground and sieved through a 0.050 sieve, are mixed with 50 wt.% Of an organic mineral filler, which is a waste of polyester fiberglass with a particle size of 50-. 600 microns The mixture is carried out in a ball mill for 1 hour.

In the pre-heated to 190 mold pour the calculated amount of the finished press powder. The powder mold is held on the press without pressure for 35 minutes to uniformly heat and melt the press powder. Pressing is carried out at 190s and a specific pressure of 50 MN / m. Pressing time 1 min at 1 mg-thickness of the product. The extruded sample is removed from the mold and cured at 180 ° C for b h.

The results of the comparative physical and mechanical properties of the proposed and known compositions are given in the table.

When using fillers made from crushed polyester glass-plastic, it has been established that in the compositions with ENBS they exhibit chemical

Properties

activity leading to a significant acceleration of the block copolymer curing process. So, the gelatinization time of ENBS in the presence of this filler is reduced by 4-10 times, as a result of which the processability of materials based on block copolymer is significantly improved. At the same time, the physical and mechanical properties of the hardened press materials are at the level of non-catalyzed ENNS, and the heat resistance is much higher. These positive qualities greatly expand the use of products made from these materials.

The materials also have excellent formability, which makes it possible to manufacture, by means of injection molding, parts of structural designation of high strength and rigidity (parts of gear, friction cam mechanisms, parts of threaded joints R, etc.).

Since in the production of plastic glass and its processing, planned technological waste in the amount of 9-20% by weight of finished products is inevitable, their use as a filler, besides its economic effect, also provides a private solution for protecting the environment from contamination by solid waste in the half-dimensional industry.

The composition

BEN-FN

BEN-F

offered

Destructive stress, kgf / cm:

with static

bend

under compression

Shock. Viscosity,

KGSSM / SM

Brinell hardness, kgf / cm

The softening temperature, ° C (Vicat)

Heat resistance according to Martinson, s

Water absorption,%

Friction coefficient

load

2

1.3 kgf / cm. 2 2.6 kgf / cm

Wear and tear

1000-1300

1300

1700 1200-1700 1200 2000

6-10

35-50

15-25

22-23

22-25

20-22

130-170 (250)

105-125

240

0.5-0.6 0.2

0.6-0.65

0.70 0.55-0.6 0.70

0,0014

0.0004

Claims (1)

. % Claims of the Invention Polymer composition comprising an epoxy-block copolymer and a filler, characterized by By the fact that, in order to reduce the curing time and increase the productivity of the compaction process, it contains crushed polyether plastic fiberglass with a particle size of 5-600 µm as a filler, with the following component ratio of 35 tons / part: eight Continued table. Epoxidonone. lacquer block podsimer 10-90 Crushed polyethermaleic fiberglass 20-90 Sources of information, taken into account in the examination 1. Handbook of plastic mas. Ed. Kataev VM / M., them, 1975, t. 2, p. 249.