CN108892968A - 一种再生阻燃工程塑料的制备方法 - Google Patents
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Abstract
一种再生阻燃工程塑料的制备方法,其包括以下步骤:(1)收集并处理废弃塑料,将废弃塑料集中处理细化为小颗粒状或粉末状;(2)混合原料,依次向上一步骤中的塑料中混入增塑剂和阻燃剂,在搅拌机内混合均匀;(3)预热原料,将上一步骤中的原料置于150~200℃的温度下预热并加入有机发泡剂;(4)塑料成型,将预热后的混合颗粒或粉末倒入模具内,进行热压成型;(5)低温定型,将上一步骤压制成型的塑料产品进行低温定型;该方法能够使得废弃的塑料得到二次利用,增强了产品的防火能力和阻燃功能,扩展了废弃塑料的应用。
Description
技术领域
本发明涉及防火材料领域,具体而言,涉及一种再生阻燃工程塑料的制备方法。
背景技术
防火材料是指各种对现代防火起到绝对性的作用的、多用于建筑的材料。常用的防火材料包括防火板、防火门、防火玻璃、防火涂料防火包等。
防火材料具有防止或阻滞火焰蔓延性能的材料,用于防火;防火材料有不燃材料和难燃材料两类。不燃材料不会燃烧;难燃材料虽可燃烧,但具阻燃性,即难起火、难炭化,在火源移开后燃烧即可停止,故又称阻燃材料。在难燃材料中,除少数本身具有阻燃功能外,在多数场合,都是采用阻燃剂、防火浸渍剂或防火涂料等对易燃材料进行阻燃处理而制得的。
工程上应用的塑料有时需要具有耐腐蚀、抗冲击、抗高温和阻燃等功能,而对于废弃塑料制品,若能重新制成阻燃的塑料产品,将会降低生产成本,让其得到重复利用。
发明内容
本发明的目的在于提供一种再生阻燃工程塑料的制备方法,其能够使得废弃的塑料得到二次利用,增强了产品的防火能力和阻燃功能,扩展了废弃塑料的应用。
本发明的实施例是这样实现的:
一种再生阻燃工程塑料的制备方法,其包括以下步骤:(1)收集并处理废弃塑料,将废弃塑料集中处理细化为小颗粒状或粉末状;(2)混合原料,依次向上一步骤中的塑料中混入增塑剂和阻燃剂,在搅拌机内混合均匀;(3)预热原料,将上一步骤中的原料置于150~200℃的温度下预热并加入有机发泡剂;(4)塑料成型,将预热后的混合颗粒或粉末倒入模具内,进行热压成型;(5)低温定型,将上一步骤压制成型的塑料产品进行低温定型。
在本发明较佳的实施例中,上述(2)中加入塑料10~20重量份、增塑剂5~8重量份和阻燃剂2~5重量份。
在本发明较佳的实施例中,上述(2)中还要加入固化剂1~2重量份、抗氧化剂0.5~1重量份。
在本发明较佳的实施例中,上述(4)中,热压成型的温度为150~200℃,压力为5~10MPa,时间控制在10~20min。
在本发明较佳的实施例中,上述(5)中低温定型的温度为30~60℃,压力为2~5MPa,时间控制在20~30min。
在本发明较佳的实施例中,上述(5)中低温定型后,出模具的塑料产品在自然环境下静置12小时以上。
在本发明较佳的实施例中,上述阻燃剂为溴化环氧树脂、磷酸三苯酚、丁苯系磷酸酯或间苯二酚双磷酸酯中的至少一种。
本发明的有益效果是:
本发明通过将废弃塑料混入阻燃剂等混合物,重新加热加压压制成新的工程塑料产品,使得废弃的塑料得到二次利用,增强了产品的防火能力和阻燃功能,扩展了废弃塑料的应用。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。
因此,以下提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围,而是仅仅表示本发明的选定实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明的描述中,需要说明的是,术语“上”、“内”、“外”、“底”等指示的方位或位置关系是该发明产品使用时惯常摆放的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”等仅用于区分描述,而不能理解为指示或暗示相对重要性。
在本发明的描述中,还需要说明的是,除非另有明确的规定和限定,术语“设置”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
第一实施例
本实施例提供一种再生阻燃工程塑料的制备方法,其包括以下步骤:
(1)收集并处理废弃塑料,将废弃塑料集中处理细化为小颗粒状或粉末状,处理后的颗粒或粉末小于500目;
(2)混合原料,依次向上一步骤中的塑料中混入增塑剂和阻燃剂,在搅拌机内混合均匀,混合时加入塑料10~20重量份、增塑剂5~8重量份、阻燃剂2~5重量份、固化剂1~2重量份和抗氧化剂0.5~1重量份;其中阻燃剂为溴化环氧树脂、磷酸三苯酚、丁苯系磷酸酯或间苯二酚双磷酸酯中的至少一种;混合时均要等待加入一种剂量的药剂混合充分后,再加入下一种药剂。
(3)预热原料,将上一步骤中的原料置于150~200℃的温度下预热并加入有机发泡剂,发泡剂包括方解石粉、氧化铝粉和小苏打粉或二硝基五次甲基四胺、偶氮二甲酰胺和偶氮二异丁腈;
(4)塑料成型,将预热后的混合颗粒或粉末倒入模具内,进行热压成型,热压成型的温度为150~200℃,压力为5~10MPa,时间控制在10~20 min;
(5)低温定型,将上一步骤压制成型的塑料产品进行低温定型,低温定型的温度为30~60℃,压力为2~5MPa,时间控制在20~30min;低温定型后,出模具的塑料产品在自然环境下静置12小时以上。
本发明采用废弃的塑料制品颗粒或粉末,废弃塑料自身的脆性较大,所以将其混入其他材料或药剂,药剂包括发泡剂和阻燃剂,发泡剂和阻燃剂遇热膨胀性质,使得塑料的高聚合物质的表面与空气隔绝提高其阻燃性,通过材料间物理化学作用,改善塑料自身的性质,包括韧性、强度、耐火和阻燃等功能,拓展了废弃塑料的应用。
本发明实例通过将废弃塑料混入阻燃剂等混合物,重新加热加压压制成新的工程塑料产品,使得废弃的塑料得到二次利用,增强了产品的防火能力和阻燃功能,扩展了废弃塑料的应用。
综上所述,本发明能够使得废弃的塑料得到二次,增强了产品的防火能力和阻燃功能,扩展了废弃塑料的应用。
本说明书描述了本发明的实施例的示例,并不意味着这些实施例说明并描述了本发明的所有可能形式。应理解,说明书中的实施例可以多种替代形式实施。公开的具体结构和功能细节不应当作限定解释,仅仅是教导本领域技术人员以多种形式实施本发明的代表性基础。本领域内的技术人员应理解,参考任一描述的多个特征可以与一个或多个其它特征组合以形成未明确说明或描述的实施例。说明的组合特征提供用于典型应用的代表实施例。然而,与本发明的教导一致的特征的多种组合和变型可以根据需要用于特定应用或实施。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种再生阻燃工程塑料的制备方法,其特征在于,其包括以下步骤:(1)收集并处理废弃塑料,将废弃塑料集中处理细化为小颗粒状或粉末状;(2)混合原料,依次向上一步骤中的塑料中混入增塑剂和阻燃剂,在搅拌机内混合均匀;(3)预热原料,将上一步骤中的原料置于150~200℃的温度下预热并加入有机发泡剂;(4)塑料成型,将预热后的混合颗粒或粉末倒入模具内,进行热压成型;(5)低温定型,将上一步骤压制成型的塑料产品进行低温定型。
2.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述(2)中加入塑料10~20重量份、增塑剂5~8重量份和阻燃剂2~5重量份。
3.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述(2)中还要加入固化剂1~2重量份、抗氧化剂0.5~1重量份。
4.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述(4)中,热压成型的温度为150~200℃,压力为5~10MPa,时间控制在10~20min。
5.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述(5)中低温定型的温度为30~60℃,压力为2~5MPa,时间控制在20~30min。
6.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述(5)中低温定型后,出模具的塑料产品在自然环境下静置12小时以上。
7.根据权利要求1所述的再生阻燃工程塑料的制备方法,其特征在于,所述阻燃剂为溴化环氧树脂、磷酸三苯酚、丁苯系磷酸酯或间苯二酚双磷酸酯中的至少一种。
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CN112143250A (zh) * | 2020-10-22 | 2020-12-29 | 湖南映宏新材料股份有限公司 | 一种塑料基废弃物的无害化处理方法 |
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