CN112159549A - 一种阻燃剂及其应用 - Google Patents
一种阻燃剂及其应用 Download PDFInfo
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- CN112159549A CN112159549A CN202010900058.7A CN202010900058A CN112159549A CN 112159549 A CN112159549 A CN 112159549A CN 202010900058 A CN202010900058 A CN 202010900058A CN 112159549 A CN112159549 A CN 112159549A
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- Insulated Conductors (AREA)
Abstract
本发明提供一种阻燃剂及其在制备阻燃型耐火电缆护套料中的应用。所述阻燃由如下质量份的组份制成:40~50份次磷酸铝、15~20份山梨醇、30~40份三聚氰胺、2~3份十二烷基硫酸钠、0.5份过硫酸钠、1~3份乙烯基三乙氧基硅烷。耐火电缆护套料中自制阻燃剂的加入,显著提高了阻燃效率,使制得的产品在同样的阻燃效果下,阻燃剂的添加量减少50%以上,改善了传统阻燃耐火电缆因阻燃剂填充量大带来的高温耐火性能差的问题;在800℃下表现出更好的力学性能,对高温下的成瓷起到很好的过渡作用,保证电缆护套的耐火性能。
Description
技术领域
本发明涉及阻燃技术领域,尤其涉及一种阻燃剂及其在制备具备阻燃以及高温耐火性能的无卤聚烯烃电缆护套料中的应用。
背景技术
普通阻燃PVC电线电缆具有良好的阻燃性能,但在燃烧时会释放大量的烟雾和有毒的氯化氢气体,属于非环境友好型产品,随着国内对阻燃要求的提高,我国PVC电线电缆的用量开始呈现下滑的趋势,绿色环保的无卤阻燃电缆料近年来得到了很大的发展。传统的阻燃电缆虽然阻燃效果好,难燃、能自熄,但遇到火灾持续时间久的情况,无法保持线路的完整性,护套层粉化严重,力学性能较差。在不影响护套料的阻燃效果的前提下,开发一种能在高温下具备较好的力学性能的电缆护套料是技术关键。
传统的阻燃剂由于存在添加量大、发烟量大和产生有毒、腐蚀性气体等严重缺点,正逐步被新一代环保型阻燃剂所替代。磷-氮类膨胀型阻燃剂作为无卤阻燃剂,不仅具有低毒、低发烟量和无熔滴等优点,并显示出良好的阻燃效果。它通常由酸源、炭源、气源三部分组成,在受热时,能在聚合物表面形成致密的多孔泡沫炭层,该碳层既可阻止内层基体材料的进一步降解,又可阻止热和氧向基体材料的传递,从而发挥阻燃作用。由于其对基体材料力学性能影响小,添加量低,将其用于阻燃型耐火电缆护套的研发。
发明内容
为解决上述技术问题,本发明提供一种阻燃剂,及其在制备低温下阻燃、高温下形成力学性能较好的壳体结构的阻燃型耐火电缆护套料中的应用。
为实现上述目的,本发明采用如下技术方案:
本发明提供一种阻燃剂,所述阻燃由如下质量份的组份制成:
次磷酸铝40~50份
山梨醇15~20份
三聚氰胺30~40份
十二烷基硫酸钠2~3份
过硫酸钠0.5份
乙烯基三乙氧基硅烷1~3份
所述阻燃剂按如下方法制备:按组方量称取次磷酸铝、山梨醇、三聚氰胺,用体积分数为85-98%的乙醇水溶液溶解,磁力搅拌5min,再加入组方量的十二烷基硫酸钠和过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却;向混合溶液中滴入组方量的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,抽滤,将得到的固体用蒸馏水清洗3~5次,在80℃的真空烘箱中干燥1h,得到自制阻燃剂;所述乙醇水溶液的体积以磷酸铝、山梨醇、三聚氰胺的总质量计为13ml/g。
优选地,所述阻燃剂由如下质量份的组份制成:
次磷酸铝40份
山梨醇20份
三聚氰胺40份
十二烷基硫酸钠2份
过硫酸钠0.5份
乙烯基三乙氧基硅烷1份。
本发明还提供一种上述阻燃剂在制备阻燃型耐火电缆护套料中的应用。
进一步,所述阻燃型耐火电缆护套料按如下方法制备:
(1)由如下质量份的原料制备增强后的碳链聚合物母粒:
气相白炭黑5~10份
十二烷基苯磺酸钠0.1份
马来酸酐0.5份
碳链聚合物粒子80份
按组方量称取气相白炭黑、十二烷基苯磺酸钠、马来酸酐,放入高速搅拌机中混合,温度为100~115℃,时间为5~10min,转速为600~800r/min,再加入组方量的碳链聚合物粒子,混合均匀后,在单螺杆挤出机中120~180℃下挤出造粒,得到增强后的碳链聚合物母粒;所述的碳链聚合物粒子为线性低密度聚乙烯粒子、聚丙烯粒子、乙烯-醋酸乙烯共聚物粒子中的一种;
(2)基于阻燃型耐火电缆护套料的原料,取步骤(1)制得的增强后的碳链聚合物母粒按如下质量份原料制备所述的阻燃型耐火电缆护套料;
阻燃剂10~30份
无机填料50~80份
烧结助剂10~30份
表面改性剂1~3份
塑化剂1~3份
抗氧剂0.5份
步骤(1)制得的增强后的碳链聚合物母粒85.6~90.6份
按所述阻燃型耐火电缆护套料的原料质量组份称取阻燃剂、无机填料、烧结助剂,加入100~115℃搅拌机中初步混合5min,转速为600~800r/min,再加入组方量表面改性剂、塑化剂和抗氧剂继续混合10~20min,再加入组方量的增强后的碳链聚合物母粒,继续混合15~30min,在双螺杆挤出机中120~180℃下挤出造粒,得到所述阻燃型耐火电缆护套料;所述的无机填料为硼酸锌与以下2种的混合物:偏高岭土、蒙脱土、硅灰石、硅微粉、硅藻土;所述的烧结助剂为磷酸盐低熔点玻璃粉、硅酸盐低熔点玻璃粉或有机低熔点玻璃粉;所述的表面改性剂为木质素偶联剂、硼酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂、硬脂酸的一种或任意几种按一定比例的混合物;所述的塑化剂为PE蜡、液体石蜡、硬脂酸锌、甲基硅油中的至少一种;所述的抗氧剂为抗氧剂1010、抗氧剂300、抗氧剂168、抗氧剂ST-252中的至少一种。
优选地,所述的气相白炭黑的粒度为1250~2500目。
优选地,所述的碳链聚合物粒子为线性低密度聚乙烯粒子、聚丙烯粒子、乙烯-醋酸乙烯共聚物粒子中的一种。
优选地,所述的表面改性剂为硼酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂、硬脂酸的一种或任意几种任意比例的混合物。
本发明特别优选步骤(2)中组方量为:
阻燃剂15份
无机填料80份
烧结助剂30份
表面改性剂2份
塑化剂2份
抗氧剂0.5份
所述的无机填料为硼酸锌与以下2种的混合物:硅灰石、硅微粉;所述的烧结助剂为ZnO-B2O3-P2O5玻璃粉;所述的表面改性剂为铝酸酯偶联剂;所述的塑化剂为硬脂酸锌;所述的抗氧剂为抗氧剂1010。
与现有技术相比,本发明的有益效果在于:
1.自制阻燃剂的加入,显著提高了阻燃效率,使制得的产品在同样的阻燃效果下,阻燃剂的添加量减少50%以上。具体表现为,能在低温下(300~600℃)通过碳化在基体表面生成一层均匀的碳质泡沫层,隔绝热量和可燃气体的传播,在低温下具备良好的阻燃性能,如果火焰持续时间长,温度很高,在800℃以上烧结10min左右,可以生成强度较好的壳体结构,改善了传统阻燃耐火电缆因阻燃剂填充量大带来的高温耐火性能差的问题。
2.相比于硅酸盐玻璃粉,使用的磷酸盐玻璃粉能在更低的温度下液化,使得电缆护套在800℃下表现出更好的力学性能,对高温下的成瓷起到很好的过渡作用,保证电缆护套的耐火性能。
3.如图1所示,制得的电缆料在敷设的过程中,可以省去云母带的绕包,优化了工艺和成本。
附图说明
图1为阻燃型耐火电缆护套的安装示意图。
具体实施方式
以下结合具体实施例对本发明作进一步说明:
实施例1
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子(余姚市长盈塑化有限公司,型号为LLDPE-5110),待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到174g增强后的碳链聚合物母粒。
按比例称取40g次磷酸铝、20g山梨醇、40g三聚氰胺,用1300ml体积分数为92%的酒精水溶液溶解,磁力搅拌5min,再加入2g十二烷基硫酸钠、0.5g过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却。向混合溶液中滴入1g的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,并抽滤,将得到的固体用蒸馏水清洗3次,在80℃的真空烘箱中干燥1h,得到102g自制阻燃剂。
称取10g硼酸锌、10g硅灰石、60g硅微粉、10g自制的阻燃剂、30g磷酸盐低熔点玻璃粉(安米微纳新材料(广州)有限公司,型号FR01),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后加入1g铝酸酯偶联剂、3g硬脂酸锌、0.5g抗氧剂1010继续混合(时间为10min),再将增强后的85.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到228g阻燃型耐火电缆护套料粒子。
实施例2
称取20g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g聚丙烯粒子(余姚市长盈塑化有限公司,型号为PP-T30S),待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到178g增强后的碳链聚合物母粒。
按比例称取50g次磷酸铝、15g山梨醇、35g三聚氰胺,用1300ml体积分数为92%的酒精水溶液溶解,磁力搅拌5min,再加入3g十二烷基硫酸钠、0.5g过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却。向混合溶液中滴入3g的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,并抽滤,将得到的固体用蒸馏水清洗3次,在80℃的真空烘箱中干燥1h,得到105g自制阻燃剂。
称取10g硼酸锌、10g偏高领土、60g蒙脱土、15g自制阻燃剂、25g硅酸盐低熔点玻璃粉(安米微纳新材料(广州)有限公司,型号D250),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后加入3g硼酸酯偶联剂、1gPE蜡、0.5g抗氧剂300继续混合(时间为10min),再将增强后的90.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到233g阻燃型耐火电缆护套料粒子。
实施例3
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g乙烯-醋酸乙烯共聚物粒子(江苏飞迈塑化有限公司,型号3170),待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到174g增强后的碳链聚合物母粒。
按比例称取40g次磷酸铝、20g山梨醇、40g三聚氰胺,用1300ml体积分数为92%的酒精水溶液溶解,磁力搅拌5min,再加入2g十二烷基硫酸钠、0.5g过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却。向混合溶液中滴入1g的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,并抽滤,将得到的固体用蒸馏水清洗5次,在80℃的真空烘箱中干燥1h,得到102g自制阻燃剂。
称取10g硼酸锌、10g硅灰石、60g硅藻土、30g自制阻燃剂、25g有机低熔点玻璃粉(东莞市骏松塑胶有限公司),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后加入2g硼酸酯偶联剂、2g液体石蜡、0.5g抗氧剂168继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到246g阻燃型耐火电缆护套料粒子。
实施例4
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子,待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到增强后的174g碳链聚合物母粒。
按比例称取40g次磷酸铝、20g山梨醇、40g三聚氰胺,用1300ml体积分数为92%的酒精水溶液溶解,磁力搅拌5min,再加入2g十二烷基硫酸钠、0.5g过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却。向混合溶液中滴入1g的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,并抽滤,将得到的固体用蒸馏水清洗5次,在80℃的真空烘箱中干燥1h,得到102g自制阻燃剂。
称取10g硼酸锌、10g硅灰石、60g硅微粉、15g自制阻燃剂、10g磷酸盐低熔点玻璃粉(安米微纳新材料(广州)有限公司,型号FR01),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后加入2g硅烷偶联剂、2g甲基硅油、0.5g抗氧剂ST-252继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到216g阻燃型耐火电缆护套料粒子。
实施例5
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子,待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到增强后的174g碳链聚合物母粒。
按比例称取40g次磷酸铝、20g山梨醇、40g三聚氰胺,用1300ml体积分数为92%的酒精水溶液溶解,磁力搅拌5min,再加入2g十二烷基硫酸钠、0.5g过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却。向混合溶液中滴入1g的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,并抽滤,将得到的固体用蒸馏水清洗3次,在80℃的真空烘箱中干燥1h,得到102g自制阻燃剂。
称取10g硼酸锌、10g硅灰石、60g硅微粉、15g自制阻燃剂、30g磷酸盐低熔点玻璃粉(同上),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后加入2g铝酸酯偶联剂、2g硬脂酸锌、0.5g抗氧剂1010继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到236g阻燃型耐火电缆护套料粒子。
实施例6
图1中,护套层5为本发明的含自制阻燃剂填充的陶瓷化耐火电缆料的横截面,导线1被束在护套层5中,且被耐火层2包裹,护套层5与耐火层2之间的间隙填充层3由玻璃纤维填充。利用本发明中的含自制阻燃剂填充的陶瓷化耐火电缆料作为护套层5,极大地提高了电缆线的阻燃和耐火性能,因此可以省去普通电缆线中位于护套层5内部的云母层4。
对比例1
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子,待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到增强后的174g碳链聚合物母粒。
称取10g硼酸锌、10g硅灰石、60g硅微粉、30g磷酸盐低熔点玻璃粉,加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后2g铝酸酯偶联剂、2g硬脂酸锌、0.5g抗氧剂1010继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到223g阻燃型耐火电缆护套料粒子。
对比例2
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子,待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到增强后的174g碳链聚合物母粒。
称取10g硼酸锌、10g硅灰石、60g硅微粉、15g市售的多聚磷酸铵(聚合度n≥1500)、30g磷酸盐低熔点玻璃粉(同上),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后2g铝酸酯偶联剂、2g硬脂酸锌、0.5g抗氧剂1010继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到236g阻燃型耐火电缆护套料粒子。
对比例3
称取16g气相白炭黑、0.2g十二烷基苯磺酸钠、1g马来酸酐,放入高速搅拌机中混合(温度为115℃,时间为5min,800r/min),再加入160g线性低密度聚乙烯粒子,待混合均匀后,通过单螺杆挤出造粒(温度为120~180℃),得到增强后的174g碳链聚合物母粒。
称取10g硼酸锌、10g硅灰石、60g硅微粉、30g市售的多聚磷酸铵(镇江星星阻燃剂有限公司,型号APP-1,聚合度n≥1500)、30g磷酸盐低熔点玻璃粉(同上),加入高速搅拌机中先进行初步混合(温度为115℃,时间为5min,转速为600r/min),之后2g铝酸酯偶联剂、2g硬脂酸锌、0.5g抗氧剂1010继续混合(时间为10min),再将增强后的88.6g碳链聚合物母粒倒入,待混合均匀后(时间为15min),直接在双螺杆挤出机中挤出造粒(温度为120~180℃),得到251g阻燃型耐火电缆护套料粒子。
表1:实施例1-5和对比例1-4制备的阻燃性耐火电缆护套粒子的性能测试结果
从表1可知,添加自制阻燃剂后,氧指数从21%提高到30%,并且能通过垂直燃烧试验(V-0),800℃下燃烧保留物的强度有轻微下降,拉伸强度和断裂伸长率也有轻微变差(对比例1)。与市售的多聚磷酸铵相比,多聚磷酸铵需要添加30份,才能通过垂直燃烧试验(V-0),而自制阻燃剂只需添加15份,在添加量上减少了50%,此外,添加自制阻燃剂的复合材料在800℃下的成瓷强度高于多聚磷酸铵的复合材料(对比例2和3)。
虽然本发明已通过参考优选的实施例进行了描述,但是,本领域普通技术人员应当了解,本发明的保护范围不限于上述实施例的描述,在权利要求书的范围内,可作出形式和细节上的各种变化。
Claims (8)
1.一种阻燃剂,其特征在于所述阻燃由如下质量份的组份制成:
次磷酸铝40~50份
山梨醇15~20份
三聚氰胺30~40份
十二烷基硫酸钠2~3份
过硫酸钠0.5份
乙烯基三乙氧基硅烷1~3份
所述阻燃剂按如下方法制备:按组方量称取次磷酸铝、山梨醇、三聚氰胺,用体积分数为85-98%的乙醇水溶液溶解,磁力搅拌5min,再加入组方量的十二烷基硫酸钠和过硫酸钠,加热至45℃并保温,搅拌2h,待混合均匀后,室温冷却;向混合溶液中滴入组方量的乙烯基三乙氧基硅烷,升温至65℃,保温3h并搅拌,将混合物冷却至室温,抽滤,将得到的固体用蒸馏水清洗3~5次,在80℃的真空烘箱中干燥1h,得到自制阻燃剂;所述乙醇水溶液的体积以磷酸铝、山梨醇、三聚氰胺的总质量计为13ml/g。
2.如权利要求1所述的阻燃剂,其特征在于所述阻燃剂由如下质量份的组份制成:
次磷酸铝40份
山梨醇20份
三聚氰胺40份
十二烷基硫酸钠2份
过硫酸钠0.5份
乙烯基三乙氧基硅烷1份。
3.如权利要求1所述阻燃剂在制备阻燃型耐火电缆护套料中的应用。
4.如权利要求3所述的应用,所述阻燃型耐火电缆护套料按如下方法制备:
(1)由如下质量份的原料制备增强后的碳链聚合物母粒:
气相白炭黑5~10份
十二烷基苯磺酸钠0.1份
马来酸酐0.5份
碳链聚合物粒子80份
按组方量称取气相白炭黑、十二烷基苯磺酸钠、马来酸酐,放入搅拌机中混合,温度为100~115℃,时间为5~10min,转速为600~800r/min,再加入组方量的碳链聚合物粒子,混合均匀后,在单螺杆挤出机中120~180℃下挤出造粒,得到增强后的碳链聚合物母粒;
所述的碳链聚合物粒子为线性低密度聚乙烯粒子、聚丙烯粒子、乙烯-醋酸乙烯共聚物粒子中的一种;
(2)基于阻燃型耐火电缆护套料的原料,取步骤(1)制得的增强后的碳链聚合物母粒按如下质量份原料制备所述的阻燃型耐火电缆护套料;
阻燃剂10~30份
无机填料50~80份
烧结助剂10~30份
表面改性剂1~3份
塑化剂1~3份
抗氧剂0.5份
步骤(1)制得的增强后的碳链聚合物母粒85.6~90.6份按所述阻燃型耐火电缆护套料的原料质量组份称取阻燃剂、无机填料、烧结助剂,加入100~115℃搅拌机中初步混合5min,转速为600~800r/min,再加入组方量表面改性剂、塑化剂和抗氧剂继续混合10~20min,再加入组方量的增强后的碳链聚合物母粒,继续混合15~30min,在双螺杆挤出机中120~180℃下挤出造粒,得到所述阻燃型耐火电缆护套料;所述的无机填料为硼酸锌与以下2种的混合物:偏高岭土、蒙脱土、硅灰石、硅微粉、硅藻土;所述的烧结助剂为磷酸盐低熔点玻璃粉、硅酸盐低熔点玻璃粉或有机低熔点玻璃粉;所述的表面改性剂为木质素偶联剂、硼酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂、硬脂酸的一种或任意几种按一定比例的混合物;所述的塑化剂为PE蜡、液体石蜡、硬脂酸锌、甲基硅油中的至少一种;所述的抗氧剂为抗氧剂1010、抗氧剂300、抗氧剂168、抗氧剂ST-252中的至少一种。
5.如权利要求4所述的应用,其特征在于:所述的气相白炭黑的粒度为1250~2500目。
6.如权利要求4所述的应用,其特征在于:所述的碳链聚合物粒子为线性低密度聚乙烯粒子、聚丙烯粒子、乙烯-醋酸乙烯共聚物粒子中的一种。
7.如权利要求4所述的应用,其特征在于:所述的表面改性剂为硼酸酯偶联剂、硅烷偶联剂、铝酸酯偶联剂、硬脂酸的一种或任意几种任意比例的混合物。
8.如权利要求4所述的应用,其特征在于步骤(2)中组方量为:
阻燃剂15份
无机填料80份
烧结助剂30份
表面改性剂2份
塑化剂2份
抗氧剂0.5份
所述的无机填料为硼酸锌与以下2种的混合物:硅灰石、硅微粉;所述的烧结助剂为ZnO-B2O3-P2O5玻璃粉;所述的表面改性剂为铝酸酯偶联剂;所述的塑化剂为硬脂酸锌;所述的抗氧剂为抗氧剂1010。
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