CN105566575A - 玻纤增强交联聚苯乙烯板材的加工工艺 - Google Patents

玻纤增强交联聚苯乙烯板材的加工工艺 Download PDF

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CN105566575A
CN105566575A CN201510946919.4A CN201510946919A CN105566575A CN 105566575 A CN105566575 A CN 105566575A CN 201510946919 A CN201510946919 A CN 201510946919A CN 105566575 A CN105566575 A CN 105566575A
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王举
贾自琴
王梦丽
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ANHUI RUIYAN NEW MATERIAL TECHNOLOGY RESEARCH INSTITUTE Co Ltd
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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F257/00—Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00
    • C08F257/02—Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00 on to polymers of styrene or alkyl-substituted styrenes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
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    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5816—Measuring, controlling or regulating temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract

一种玻纤增强交联聚苯乙烯板材的加工工艺，它包括以下步骤：1)聚苯乙烯粉末的溶解：将聚苯乙烯粉末倒入苯乙烯和二乙烯苯的混合液中，搅拌至得到透亮溶液；2)玻璃丝的添加：向上述透亮溶液中加入经过硅烷偶联剂处理的长切玻璃丝，搅拌至混合均匀；3)玻纤增强交联聚苯乙烯板材的成形：将上述混合物倒入模具并密封，采用γ射线进行辐射，使液体凝固至出现一定强度；4)玻纤增强交联聚苯乙烯板材的后期处理：对上述塑料板进行热压处理，得到玻纤增强交联聚苯乙烯板材。本发明通过热压处理，消除材料体系中玻纤/高分子界面可能出现的间隙，并使体系中残留的小分子尽可能反应完全，进一步提高材料的一定强度。

Description

玻纤增强交联聚苯乙烯板材的加工工艺
技术领域
本发明属于聚合物新材料领域，具体涉及一种采用聚苯乙烯粉末为原料。
背景技术
交联聚苯乙烯是一种性能十分优良的低介电材料，在500Hz的宽频范围内拥有2.3～2.5的介电常数，0.1以内的介电损耗，以及较好的机械加工性和尺寸稳定性。此外，交联聚苯乙烯还具有很好的耐高压击穿性能，较大的体、表电阻率，极高的抗辐射能力等特点。因此其在微波通讯、半导体等领域有着极佳的应用前景。
通过提升交联聚苯乙烯材料的交联密度、均匀性以及纯度等可以在一定程度上提高材料的一定强度，但是这种提升非常有限，无法满足应用要求。
发明内容
本发明旨在解决现有交联聚苯乙烯板材一定强度不足的问题，提供一种玻纤增强交联聚苯乙烯板材的加工工艺。
本发明为解决上述技术问题所采取的技术方案为：
一种玻纤增强交联聚苯乙烯板材的加工工艺，其特征在于，它包括以下步骤：
1)聚苯乙烯粉末的溶解：将聚苯乙烯粉末倒入苯乙烯和二乙烯苯的混合液中，搅拌至得到透亮溶液；
2)玻璃丝的添加：向上述透亮溶液中加入经过硅烷偶联剂处理的长切玻璃丝，搅拌至混合均匀；
]3)玻纤增强交联聚苯乙烯板材的成形：将上述混合物倒入模具并密封，采用γ射线进行辐射，使液体凝固至出现一定强度；
4)玻纤增强交联聚苯乙烯板材的后期处理：对上述塑料板进行热压处理，得到玻纤增强交联聚苯乙烯板材。
上述方案中，步骤1)的混合液中苯乙烯为95～98wt％，二乙烯苯为1～5wt％；聚苯乙烯粉末与混合液的质量比为1:1～9。
上述方案中，步骤2)中的硅烷偶联剂为γ-(甲基丙烯酰氧)丙基三甲氧基硅烷。
上述方案中，步骤2)中的长切玻璃丝的直径为5～15μm，长度为3～30mm，添加量为透亮溶液质量的1～30％。
上述方案中，步骤3)中的γ射线辐射过程是在低温环境下进行的，其中反应温度为-10～20℃；γ射线的辐射剂量率为1～100Gy/min，总剂量为1～100kGy。
上述方案中，步骤4)中的热压制度为：升温速率1～10℃/min，保温温度100～120℃，热压机压力5～15MPa，保温保压时间1～8h。
与现有技术相比，本发明的有益效果在于：
1、本发明向聚苯乙烯交联体系中加入玻璃丝，形成交联聚苯乙烯/玻纤复合材料。采用γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPS)对玻纤进行表面处理，偶联剂在水解后与玻纤表面的-OH键发生化学反应形成牢固稳定的Si-O-Si键，使玻纤带有C＝C键官能团，能够与聚苯乙烯交联体系发生有效的化学键合，提高材料的一定强度；
2、本发明采用γ射线辐射代替加热处理，完成材料体系的交联聚合。由于辐射对乙烯类长链聚合物的特殊作用，除了由二乙烯苯提供的悬挂双键外，聚苯乙烯链段自身会发生脱氢形成交联点。这就使材料体系的交联密度更大，与玻纤的化学键合更为紧密，更好的增强材料的一定强度；
3、本发明以聚苯乙烯粉末为原料，能准确控制接受γ射线辐射的聚苯乙烯链段数量，调节辐射交联的比例，保证材料交联体系的均匀性，使产品的质量可控，制备高效。
4、本发明通过热压处理，消除材料体系中玻纤/高分子界面可能出现的间隙，并使体系中残留的小分子尽可能反应完全，进一步提高材料的一定强度。
具体实施方式
本发明提供一种玻纤增强交联聚苯乙烯板材的加工工艺，其包括以下步骤：
1)将苯乙烯和二乙烯苯按混合均匀，配制两者的混合液，混合液中苯乙烯为95～98wt％，二乙烯苯为1～5wt％；
2)将聚苯乙烯粉末与上述混合液按质量比1:1～9混合，高速搅拌至溶液透亮；
3)将直径为5～15μm，长度为3～30mm的长切玻璃丝倒入γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPS)溶液中，浸泡1h后取出，用去离子水冲洗至中性，烘干；
4)将经过硅烷偶联剂处理的长切玻璃丝加入步骤2)得到的澄清溶液中，高速搅拌至混合均匀，其中玻纤的加入量为澄清溶液质量的1～30％；
5)将上述混合物倒入可隔绝水、氧的特殊模具中，密封；
6)在-10～20℃温度下对装有样品的模具进行1～100kGy的γ射线辐射，辐射剂量率为1～100Gy/min；
7)打开模具取出完全固化的玻纤增强交联聚苯乙烯板材，机加工至性状规则、表面平整；
8)将加工好的玻纤增强交联聚苯乙烯板材套入对应模具中，放入热压台，10℃/min的升温速率升至一定温度后开始保温加压，其中保温温度为100～120℃，热压机压力为5～15MPa，保持热压机的温度和压力1～8h，然后将温度缓慢降至室温，打开热压机，取出高强度聚苯乙烯板材的最终产物。

Claims (1)

1.玻纤增强交联聚苯乙烯板材的加工工艺，其特征在于，它包括以下步骤：
1)聚苯乙烯粉末的溶解：将聚苯乙烯粉末倒入苯乙烯和二乙烯苯的混合液中，搅拌至得到透亮溶液；
2)玻璃丝的添加：向上述透亮溶液中加入经过硅烷偶联剂处理的长切玻璃丝，搅拌至混合均匀；
3)玻纤增强交联聚苯乙烯板材的成形：将上述混合物倒入模具并密封，采用γ射线进行辐射，使液体凝固至出现一定强度；
4)玻纤增强交联聚苯乙烯板材的后期处理：对上述塑料板进行热压处理，得到玻纤增强交联聚苯乙烯板材；
步骤1)的混合液中苯乙烯为95～98wt％，二乙烯苯为1～5wt％；聚苯乙烯粉末与混合液的质量比为1:1～9；
步骤2)中的硅烷偶联剂为γ-(甲基丙烯酰氧)丙基三甲氧基硅烷。
CN201510946919.4A 2015-12-15 2015-12-15 玻纤增强交联聚苯乙烯板材的加工工艺 Withdrawn CN105566575A (zh)

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Application publication date: 20160511