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Acrylic Block: Methyl Methacrylate Syrup Cast in Layers between Glass
Charlie

Dicipta oleh

Charlie

20. Oktober 2026DE
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Acrylic Block: Methyl Methacrylate Syrup Cast in Layers between Glass

A thick acrylic block cannot be cast flawless in one pour. Tattersall (ICI, US 2,071,907, 1937) built it up in layers: pour 1/2 inch of syrup on a level glass plate, let it set for a day at room temperature, pour the next 1/2 inch on top, cover with a second glass plate, wait another day, then heat the sandwich at 80 °C. Each 1/2 inch layer shrinks to about 1/3 inch. The glass gives both faces a finished polish with no grinding. The picture: our diagram.
Pertengahan
3 days

Arahan

1

Level the bottom plate

Set a glass plate on a ledge in a wooden frame, on a body of plaster of Paris, and level it carefully. The example sheet was 10 by 18 inches.

Alatan diperlukan:

Cermin kepinganCermin kepingan
Bingkai kayuBingkai kayu
Plaster ParisPlaster Paris
Aras CecairAras Cecair
2

Pour the first 1/2 inch

Pour room-temperature syrup 1/2 inch deep (about 1.5 litres for 10 by 18 inches; our figure). Cover against dust, but do not put the top plate on yet. Leave 24 hours at about 20 °C.

Bahan untuk langkah ini:

Sirap metil metakrilatSirap metil metakrilat3 l

Alatan diperlukan:

Sarung tangan getahSarung tangan getah
Termometer MakmalTermometer Makmal
3

Pour the next layer and cover

Pour a second 1/2 inch layer on the first. Lower the top glass plate onto it so it rests on the syrup and keeps pressing on it. Leave another 24 hours at about 20 °C. For a thicker block repeat the layers, a day apart, and put the plate on the last one.

Alatan diperlukan:

Cermin kepinganCermin kepingan
4

Heat at 80 °C

Take the glass sandwich out of the frame and heat it for three hours at 80 °C to finish the polymerisation.

Alatan diperlukan:

Ketuhar pengeringanKetuhar pengeringan
Termometer MakmalTermometer Makmal
Sarung Tangan Tahan HabaSarung Tangan Tahan Haba
5

Spring off the glass

Spring the glass plates off the block with a knife blade. Both faces come out smooth and polished.

Alatan diperlukan:

Pisau KrafPisau Kraf
Sarung tangan getahSarung tangan getah

Bahan

1

Alatan Diperlukan

9

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Blueprint berkaitan

Blueprint ini berkongsi pengetahuan — teknik, bahan atau prinsip

Methyl Methacrylate Syrup: Partly Polymerised below 80 °C with Hydrogen Peroxide

Methyl Methacrylate Syrup: Partly Polymerised below 80 °C with Hydrogen Peroxide

oleh CharlieDE

Industri

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CC0 Domain Awam

Blueprint ini dikeluarkan di bawah CC0. Anda bebas menyalin, mengubah, mengedar, dan menggunakan karya ini untuk sebarang tujuan, tanpa meminta kebenaran.

Sokong Pembuat dengan membeli produk melalui Blueprint mereka di mana mereka memperoleh Komisen Pembuat ditetapkan oleh Penjual, atau cipta iterasi baru Blueprint ini dan sertakan ia sebagai sambungan dalam Blueprint anda sendiri untuk berkongsi hasil.

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