CN107760025A - 一种玻纤复合材料的制备方法 - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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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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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
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- B29C2948/92704—Temperature
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C08L2205/00—Polymer mixtures characterised by other features
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/02—Heterophasic composition
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Abstract
一种玻纤复合材料的制备方法,属于材料制备领域。其特征在于:将PA46在100~110℃条件下干燥,然后将干燥后的PA46,PPE,SEBS‑g‑MAH和润滑剂置于高速混合机中搅拌,使原料混合均匀;将混合后的原料加入双螺杆挤出机料斗中,将GF从挤出机中段加入,挤出造粒,所得粒料干燥后注塑成型。通过对制备工艺的优化,使得所制备的复合材料的耐高温和力学性能得到提高,降低了其吸水率,使其具有了优异的耐湿态无铅锡焊性能,扩大了其使用范围。本发明所述的一种玻纤复合材料的制备方法,方法简单,易于操作,具有广阔的市场空间。
Description
技术领域
本发明属于材料制备领域,尤其涉及一种玻纤复合材料的制备方法。
背景技术
随着科技的快速进步,以及对于环境保护的力度加强,在电子、电器、信息产品的制造上,已广泛采用新型无铅锡焊。加上为提高焊接速度而增加的温度以及表面贴装等工艺的特殊要求,以往的尼龙(PA)66、聚对苯甲酸丁二酯(PBT)等材料的耐热性能不能满足要求,限制了相关行业的发展。
发明内容
本发明旨在解决上述问题,提供一种玻纤复合材料的制备方法。
一种玻纤复合材料的制备方法,其特征在于:将PA46在100~110℃条件下干燥8~12h,然后将干燥后的PA46,PPE,SEBS-g-MAH和润滑剂置于高速混合机中搅拌,使原料混合均匀;将混合后的原料加入双螺杆挤出机料斗中,将GF从挤出机中段加入,挤出造粒,所得粒料于110℃温度下干燥后注塑成型。
本发明所述的一种玻纤复合材料的制备方法,其特征在于所述搅拌时间为3~5min。
本发明所述的一种玻纤复合材料的制备方法,其特征在于所述挤出机的温度为280~310℃。
本发明所述的一种玻纤复合材料的制备方法,其特征在于所述挤出机的螺杆转速为200~300 r/min。
本发明所述的一种玻纤复合材料的制备方法,其特征在于所述粒料的干燥时间为8h。
本发明所述的一种玻纤复合材料的制备方法,通过对制备工艺的优化,使得所制备的复合材料的耐高温和力学性能得到提高,降低了其吸水率,使其具有了优异的耐湿态无铅锡焊性能,扩大了其使用范围。本发明所述的一种玻纤复合材料的制备方法,方法简单,易于操作,具有广阔的市场空间。
具体实施方式
一种玻纤复合材料的制备方法,其特征在于:将PA46在100~110℃条件下干燥8~12h,然后将干燥后的PA46,PPE,SEBS-g-MAH和润滑剂置于高速混合机中搅拌,使原料混合均匀;将混合后的原料加入双螺杆挤出机料斗中,将GF从挤出机中段加入,挤出造粒,所得粒料于110℃温度下干燥后注塑成型。
本发明所述的一种玻纤复合材料的制备方法,所述搅拌时间为3~5min。所述挤出机的温度为280~310℃。所述挤出机的螺杆转速为200~300 r/min。所述粒料的干燥时间为8h。由于PPE为非结晶型聚合物,与结晶度高达70%的PA46热力学不相容,从而影响了共混物的性能。随着PPE用量的逐渐增加,PA46的吸水率逐渐降低。当PPE的质量分数在10%以内时,随着PPE用量的增加,PA46的吸水率下降非常明显。为PPE是所有工程塑料中吸水率最低的。只有0.06%,将PPE与PA46共混改性,降低了PA46的吸水率。由于非结晶性PPE与结晶性PA的热力学不相容,为了使共混物的性能达到最佳,必须对不相容的共混物进行增容。相容剂SEBS-g-MAH的适量加入能够很好地提高PA/PPE合金的相容性,相容剂SEBS-g-MAH的适量添加,使SEBS-g-MAH中的酸酐基团与PA46的胺基相互作用,形成共价键,提高了PPE和PA46的相容性。相容剂SEBS-g-MAH的适量添加,使SEBS-g-MAHH中的酸酐基团与PA46中的胺基相互作用,削弱了水与PA46的作用。同时,SEBS-g-MAH也改善了PPE与PA46的界面粘结,提高了相界面的粘结力,形成了一个粘结力较强的界面层,起到排斥水的作用。添加SEBS-g-MAH时,PPE作为分散相分布在连续相PA46中,且大多只是分散在PA46的表面,表面明显凸出,且并未被包裹,说明界面的相容性较差,界面粘结力较弱。因此不能有效地阻止水的渗入,达不到降低吸水率的最佳效果,同时共混物的综合性能不佳。随着GF用量的逐渐增加,复合材料的力学性能大幅度提高,同时吸水率下降也非常明显,尤其是GF的质量分数为30%和40%时,吸水率分别下降到1.79%和1.42%。由于GF自身不吸水,而且加入量大,从而在宏观上表现为明显降低了复合材料的整体吸水率。
Claims (5)
1.一种玻纤复合材料的制备方法,其特征在于:将PA46在100~110℃条件下干燥8~12h,然后将干燥后的PA46,PPE,SEBS-g-MAH和润滑剂置于高速混合机中搅拌,使原料混合均匀;将混合后的原料加入双螺杆挤出机料斗中,将GF从挤出机中段加入,挤出造粒,所得粒料于110℃温度下干燥后注塑成型。
2.如权利要求1所述的一种玻纤复合材料的制备方法,其特征在于所述搅拌时间为3~5min。
3.如权利要求1所述的一种玻纤复合材料的制备方法,其特征在于所述挤出机的温度为280~310℃。
4.如权利要求1所述的一种玻纤复合材料的制备方法,其特征在于所述挤出机的螺杆转速为200~300 r/min。
5.如权利要求1所述的一种玻纤复合材料的制备方法,其特征在于所述粒料的干燥时间为8h。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108587109A (zh) * | 2018-03-12 | 2018-09-28 | 广东顺威赛特工程塑料开发有限公司 | 一种高耐热高强度ppe合金材料及其制备方法 |
CN108659527A (zh) * | 2018-05-02 | 2018-10-16 | 山东冬瑞高新技术开发有限公司 | 一种高强度玻纤复合材料及其制备方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108587109A (zh) * | 2018-03-12 | 2018-09-28 | 广东顺威赛特工程塑料开发有限公司 | 一种高耐热高强度ppe合金材料及其制备方法 |
CN108659527A (zh) * | 2018-05-02 | 2018-10-16 | 山东冬瑞高新技术开发有限公司 | 一种高强度玻纤复合材料及其制备方法 |
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