CN101298201A - 一种阳光耐力板及其制造方法 - Google Patents
一种阳光耐力板及其制造方法 Download PDFInfo
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- CN101298201A CN101298201A CNA2007100404128A CN200710040412A CN101298201A CN 101298201 A CN101298201 A CN 101298201A CN A2007100404128 A CNA2007100404128 A CN A2007100404128A CN 200710040412 A CN200710040412 A CN 200710040412A CN 101298201 A CN101298201 A CN 101298201A
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/906—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using roller calibration
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
本发明涉及一种阳光耐力板,即一种阳光板耐力板(实心板);本发明还涉及其制造方法。一种阳光耐力板,包括阳光耐力板本体,其特征在于:还包括在阳光耐力板本体的表面通过共挤出法形成的一层紫外线吸收剂保护层,所述紫外线吸收剂保护层厚30微米~50微米。其制造方法为,PC主料和紫外线吸收剂各自在挤出机中高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型。本发明采用共挤出法制造阳光耐力板,依照上述方法制造的阳光耐力板不容易受损、分层脱落,充分发挥了紫外线吸收剂的作用,并且降低了成本。
Description
技术领域
本发明涉及一种阳光耐力板,即一种阳光板耐力板(实心板);本发明还涉及其制造方法。
背景技术
阳光板学名为聚碳酸酯板。塑料板材都存在受紫外光线照射而发生快速老化的问题,各生产企业都采用不同的方法解决这一问题,以期延长产品的使用寿命。最实用和有效的方法是在产品中添加紫外线吸收剂,但是添加工艺的不同又会造成实际使用效果的天壤之别。
最初大家都采用表面涂覆法,即在板材的表面涂上一层紫外线吸收剂,但是由于PC和其他材料的相容性很差,所以安装后雨水就很容易把表面的涂层冲落,另外考虑到产品在储运过程中可能发生的损坏,生产时就在产品的两面覆上了保护膜,此保护膜在安装结束后必须撕下,而由于保护膜有粘性,所以在撕下过程中会粘落大量的表面涂覆的紫外线吸收剂,所以实际效果很差。
现在很多厂家采用混合添加法,即在PC主料中混入一定量的紫外线吸收剂(约5%),一起经高温熔融挤出,这解决了分层脱落问题,但由于板材表面的很大部分还是裸露在太阳光下,因此板材表面的老化还是不可避免地发生,此外由于紫外线吸收剂价格昂贵,添加如此高比例的吸收剂也造成了产品成本的大幅度上升。
发明内容
本发明的目的一方面在于提出一种新的阳光耐力板,以解决现在的聚碳酸酯实心板存在的紫外线吸收剂层容易受损、分层脱落的问题。
一种阳光耐力板,包括阳光耐力板本体,其特征在于:还包括在阳光耐力板本体的表面通过共挤出法形成的一层紫外线吸收剂保护层,所述紫外线吸收剂保护层厚30微米~50微米。(视紫外线吸收剂浓度而定)。
本发明的目的的另一方面在于提出这种阳光耐力板的制造方法。
一种制造上述阳光耐力板的方法,其特征在于:PC主料和紫外线吸收剂各自在挤出机中高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型。
PC主料在挤出机中经265℃~285℃高温熔融挤出。
紫外线吸收剂在挤出机中经240℃~265℃高温熔融挤出。
上、中、下三辊的温度分别为100~120℃、110~130℃、120~140℃。
本发明采用共挤出法制造阳光耐力板,依照上述方法制造的阳光耐力板不容易受损、分层脱落,充分发挥了紫外线吸收剂的作用,并且降低了成本。
附图说明
以下结合附图和具体实施方式来进一步说明本发明。
图1是本发明所述的阳光耐力板的一种实施例的结构示意图。
图2是本发明所述的阳光耐力板的另一种实施例的结构示意图。
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施方式,进一步阐述本发明。
实施例1:
参见图1。一种阳光耐力板,包括阳光耐力板本体1,在阳光耐力板本体的上下表面各形成一层紫外线吸收剂保护层21、22,所述紫外线吸收剂保护层21、22各厚30微米~50微米(视紫外线吸收剂浓度而定)。本实施例中的阳光耐力板具有双面紫外线吸收剂保护层。
实施例2
参见图2。一种阳光耐力板,包括阳光耐力板本体1,在阳光耐力板本体的上表面形成一层紫外线吸收剂保护层21,所述紫外线吸收剂保护层21厚30微米~50微米(视紫外线吸收剂浓度而定)。本实施例中的阳光耐力板具有单面紫外线吸收剂保护层。
实施例3
采用的紫外线吸收剂为K-0743,制造6cm厚的阳光耐力板,其中紫外线吸收剂层厚30微米。PC主料和紫外线吸收剂各自在挤出机中经265℃和240℃高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型,上、中、下三辊的温度分别为100℃、115℃、125℃。
实施例4
采用的紫外线吸收剂为DP1-1816,制造4cm厚的阳光耐力板,其中紫外线吸收剂层厚50微米。PC主料和紫外线吸收剂各自在挤出机中经275℃和250℃高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型,上、中、下三辊的温度分别为105℃、120℃、130℃。
实施例5
采用的紫外线吸收剂为ML3987,制造3cm厚的阳光耐力板,其中紫外线吸收剂层厚50微米。PC主料和紫外线吸收剂各自在挤出机中经285℃和265℃高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型,上、中、下三辊的温度分别为110℃、125℃、135℃。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等同物界定。
Claims (5)
1、一种阳光耐力板,包括阳光耐力板本体,其特征在于:还包括在阳光耐力板本体的表面通过共挤出法形成的一层紫外线吸收剂保护层,所述紫外线吸收剂保护层厚30微米~50微米。
2、一种制造如权利要求1所述的阳光耐力板的方法,其特征在于:PC主料和紫外线吸收剂各自在挤出机中高温熔融挤出,在模具中汇合,经三辊压延机压延后冷却定型。
3、根据权利要求2所述的阳光耐力板的制造方法,其特征在于:PC主料在挤出机中经265℃~285℃高温熔融挤出。
4、根据权利要求2所述的阳光耐力板的制造方法,其特征在于:紫外线吸收剂在挤出机中经240℃~265℃高温熔融挤出。
5、根据权利要求2所述的阳光耐力板的制造方法,其特征在于:上、中、下三辊的温度分别为100~120℃、110~130℃、120~140℃。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041880A (zh) * | 2009-10-15 | 2011-05-04 | 上海汇丽-塔格板材有限公司 | 一种晶亮阳光板及其制备方法 |
CN102601956A (zh) * | 2010-01-15 | 2012-07-25 | 常州新泉塑料机械有限公司 | 一种光学级透明pc片材挤出生产线 |
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- 2007-04-30 CN CNA2007100404128A patent/CN101298201A/zh active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102041880A (zh) * | 2009-10-15 | 2011-05-04 | 上海汇丽-塔格板材有限公司 | 一种晶亮阳光板及其制备方法 |
CN102601956A (zh) * | 2010-01-15 | 2012-07-25 | 常州新泉塑料机械有限公司 | 一种光学级透明pc片材挤出生产线 |
CN102601956B (zh) * | 2010-01-15 | 2014-11-12 | 常州新泉塑料机械有限公司 | 一种光学级透明pc片材挤出生产线 |
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