RU2018102152A - Композитная гипсовая плита и способ её изготовления - Google Patents

Композитная гипсовая плита и способ её изготовления Download PDF

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RU2018102152A
RU2018102152A RU2018102152A RU2018102152A RU2018102152A RU 2018102152 A RU2018102152 A RU 2018102152A RU 2018102152 A RU2018102152 A RU 2018102152A RU 2018102152 A RU2018102152 A RU 2018102152A RU 2018102152 A RU2018102152 A RU 2018102152A
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core
plate
concentrated layer
density
gypsum board
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RU2018102152A
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RU2721675C2 (ru
RU2018102152A3 (ru
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Альфред С. ЛИ
Вэйсинь Д. СУН
Ицзюн САН
Грегг Г. ДИФЕНБАХЕР
Аннамария ВИЛИНСКАЯ
Брайан Дж. КРИСТ
Фредерик Т. ДЖОНС
Брэдли В. ТОДД
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Юнайтед Стейтс Джипсум Компани
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Application filed by Юнайтед Стейтс Джипсум Компани filed Critical Юнайтед Стейтс Джипсум Компани
Priority claimed from PCT/US2016/038737 external-priority patent/WO2016209942A1/en
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    • B32B7/02—Physical, chemical or physicochemical properties
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    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
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  • Engineering & Computer Science (AREA)
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  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Panels For Use In Building Construction (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Building Environments (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Medicinal Preparation (AREA)

Claims (24)

1. Композитная гипсовая плита, содержащая:
(a) сердечник плиты, содержащий затвердевший гипс, сформированный по меньшей мере из воды, штукатурного гипса и, необязательно, усиливающей добавки, причём указанный сердечник определяет первую лицевую сторону сердечника; и
(b) концентрированный слой, сформированный по меньшей мере из воды, штукатурного гипса и усиливающей добавки, причём указанный концентрированный слой расположен в соединении с первой лицевой стороной сердечника; при этом:
(i) если усиливающая добавка содержится при формировании сердечника плиты, то усиливающая добавка содержится в более высокой концентрации при формировании концентрированного слоя, чем при формировании сердечника плиты,
(ii) толщина сердечника плиты больше, чем толщина концентрированного слоя, и
(iii) концентрированный слой имеет среднюю твёрдость сердечника, которая по меньшей мере приблизительно в 1,5 раза больше, чем средняя твёрдость сердечника плиты.
2. Композитная гипсовая плита, содержащая:
(a) сердечник плиты, содержащий затвердевший гипс, сформированный по меньшей мере из воды, штукатурного гипса и, необязательно, усиливающей добавки, причём указанный сердечник имеет плотность в сухом состоянии, при этом указанный сердечник определяет первую и вторую лицевые стороны сердечника в противоположно направленном сопряжении; и
(b) концентрированный слой, сформированный по меньшей мере из воды, штукатурного гипса и усиливающей добавки, причём указанный концентрированный слой расположен в соединении с первой лицевой стороной сердечника; при этом:
(i) если усиливающая добавка присутствует при формировании сердечника, то концентрированный слой сформирован по меньшей мере из приблизительно в 1,2 раза большего количества усиливающей добавки, применяемой при формировании сердечника плиты,
(ii) сердечник плиты имеет плотность в сухом состоянии около 30 фунтов/куб.фут (около 481 кг/м3) или менее, и
(iii) концентрированный слой имеет более высокую плотность в сухом состоянии, чем плотность сердечника плиты в сухом состоянии.
3. Композитная гипсовая плита, содержащая:
(a) сердечник плиты, содержащий затвердевший гипс, сформированный по меньшей мере из воды, штукатурного гипса и, необязательно, одного или обоих из: диспергирующего агента и/или полифосфата, причём указанный сердечник имеет плотность в сухом состоянии, при этом указанный сердечник определяет первую и вторую лицевые стороны сердечника в противоположно направленном сопряжении; и
(b) концентрированный слой, сформированный по меньшей мере из воды, штукатурного гипса и одного или обоих из: полифосфата и диспергирующего агента, причём указанный концентрированный слой расположен в соединении с первой лицевой стороной сердечника; при этом:
(i) если полифосфат и/или диспергирующий агент присутствует при формировании сердечника, то полифосфат и/или диспергирующий агент содержится в более высокой концентрации при формировании концентрированного слоя, чем при формировании сердечника плиты, и
(ii) концентрированный слой имеет более высокую плотность в сухом состоянии, чем плотность сердечника плиты в сухом состоянии.
4. Композитная гипсовая плита по любому из пп. 1-3, отличающаяся тем, что указанная плита имеет плотность около 33 фунтов/куб.фут (около 530 кг/м3) или менее и указанная плита имеет сопротивление протаскиванию гвоздя согласно способу B стандарта ASTM C473-10 по меньшей мере около 68 фунт-силы.
5. Композитная гипсовая плита по любому из пп. 1-4, отличающаяся тем, что усиливающая добавка содержит крахмал.
6. Композитная гипсовая плита по п. 5, отличающаяся тем, что крахмал содержит прежелатинизированный крахмал, имеющий вязкость от около 20 сантипуаз до около 700 сантипуаз, причём вязкость измеряют, когда крахмал подвергают условиям согласно способу VMA.
7. Композитная гипсовая плита по любому из пп. 1 и 3-6, отличающаяся тем, что сердечник плиты имеет плотность в сухом состоянии около 30 фунтов/куб.фут или менее.
8. Композитная гипсовая плита по любому из пп. 1-7, отличающаяся тем, что концентрированный слой имеет модуль Юнга, который по меньшей мере приблизительно в 1,5 раза выше, чем модуль Юнга сердечника плиты.
9. Композитная гипсовая плита по любому из пп. 1-8, отличающаяся тем, что дифференциал плотности между концентрированным слоем и сердечником плиты составляет по меньшей мере около 8 фунтов/куб.фут (около 130 кг/м3).
10. Композитная гипсовая плита по п.3, отличающаяся тем, что концентрированный слой дополнительно сформирован из усиливающей добавки, и сердечник плиты, необязательно, дополнительно сформирован из усиливающей добавки, и при этом если усиливающая добавка содержится при формировании сердечника плиты, то усиливающая добавка содержится в более высокой концентрации при формировании концентрированного слоя, чем при формировании сердечника плиты.
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