I ngā tau tata nei, he maha ngā paura rapa kapia, ngā paura rapa ātete-wai kaha-teitei me ētahi atu paura rapa tino iti te utu kua puta ki te mākete hei whakakapi i te whakamomona VAE tuku iho (vinyl acetate-ethylene copolymer), he mea whakamaroke ki te rehu, ā, he mea hanga ki te paura rapa ka taea te hangarua. Ko te paura rapa marara, nō reira he aha te rerekētanga i waenga i te paura kapia me te paura rapa ka taea te whakamarara anō, ka taea e te paura kapia te whakakapi i te paura rapa ka taea te whakamarara anō?
Tātarihia pototia te rerekētanga i waenganui i ngā mea e rua hei tirohanga:
01. Paura rapa ka taea te whakamarara anō
I tēnei wā, ko ngā paura rapa whakamarara e whakamahia whānuitia ana i te ao ko: te paura vinyl acetate me te paura ethylene copolymer (VAC/E), te paura ethylene, te vinyl chloride me te vinyl laurate ternary copolymer (E/VC/VL), te paura acetic vinyl ester, te paura ethylene me te waikawa ngako teitei ake vinyl ester ternary copolymer (VAC/E/VeoVa), ko ēnei paura rapa whakamarara e toru e kaha ana ki te mākete katoa, inā koa te paura vinyl acetate me te paura ethylene copolymer VAC/EE, e noho ana i tētahi tūranga ārahi i roto i te ao whānui, ā, e tohu ana i ngā āhuatanga hangarau o te paura polymer whakamarara. Ko te otinga hangarau pai rawa atu tonu i runga i te wheako hangarau me ngā polymer e whakamahia ana ki te whakarerekētanga moata:
1. Ko tētahi o ngā pūmua e whakamahia nuitia ana i te ao;
2. Ko te wheako tono i roto i te mara o te hanga te mea tino nui;
3. Ka taea e ia te whakatutuki i ngā āhuatanga rheological e hiahiatia ana e te moata (arā, te hanganga e hiahiatia ana);
4. Ko te kapia pūmua me ētahi atu monomer he āhuatanga o te iti o te mea mimiti waro (VOC) me te iti o te hau whakapataritari;
5. He āhuatanga pai tōna, he ātete pai ki te UV, he ātete pai ki te wera, ā, he pumau mō te wā roa;
6. Te ātete nui ki te saponification;
7. Kei a ia te whānuitanga pāmahana whakawhiti karāhe whānui rawa atu (Tg);
8. He tino pai te hononga whānui, te ngāwari me ngā āhuatanga hangarau;
9. He roa rawa te wheako ki te hanga matū mō te whakaputa hua kounga pumau, me te wheako hoki ki te pupuri i te pumau o te rokiroki;
10. He tino ngāwari te whakakotahi me te colloid tiaki (waipiro polyvinyl) me te mahi tino pai.
02. Paura kapia
Ko te nuinga o te paura rapa "reini" kei te mākete kei roto te matū DBP. Ka taea e koe te tirotiro i te kino o tēnei matū, e pā ana ki te mahi tāne. He nui te nui o tēnei momo paura rapa e puranga ana i roto i te whare putunga me te taiwhanga, ā, he āhua pōturi. Ko te mākete o Beijing, e rongonui ana mō te nui o te "paura rapa", he maha ngā ingoa o te "paura rapa" kua rumakina ki ngā whakarewa: te paura rapa ātete-wai kaha-teitei, te paura rapa reini, me ētahi atu. Ngā āhuatanga noa:
1. Kāore e tino marara, ko ētahi e mākū ana, ko ētahi e pupuhi ana (me waiho hei rauemi pūwero pērā i te sepiolite) ā, ko ētahi he mā, he maroke paku engari he haunga kino tonu;
2. He tino kakara kino;
3. Kua tāpirihia ētahi tae, ā, ko ngā tae e puta ana i tēnei wā ko te mā, te kōwhai, te hina, te mangu, te whero, me ētahi atu;
4. He iti noa te nui o te tāpiri, ā, ko te nui o te tāpiri mō te kotahi tana he 5-12 kg;
5. He tino pai te kaha o te tīmatanga. Kāore he kaha o te sima i roto i ngā rā e toru, ā, ka taea te waikura me te piri o te papa whakamahana;
6. E kiia ana kāore te papa XPS e hiahia ana ki tētahi kaihoko atanga;
Mai i ngā tauira i whiwhihia tae noa mai ki tēnei wā, ka taea te whakatau he kapia whakarewa tēnei e piri ana ki ngā rauemi mama, engari e hiahia ana te kaiwhakarato kia kaua e whakamahi i te kupu "whakarewa", nō reira i huaina ai ko te "paura rapa".
ngoikoretanga:
1. He raruraru nui te ātete o te whakarewa ki te huarere. I te rā, ka mimiti wawe. Ahakoa kāore i te rā, ka tere ake te pirau o te hononga nā te hanganga o te kōhao;
2. Ātete ki te koroheketanga, kāore ngā whakarewa e ātete ki te pāmahana, e mōhio ana te katoa ki tēnei;
3. Nā te mea ko te tikanga here he whakarewa i te atanga o te papa whakamahana, engari, ka whakangaromia hoki te atanga here. Mēnā he raruraru tēnei i te wāhanga o muri mai, ka mate te pānga;
4. Kāore anō kia kitea tēnei rauemi i ngā whenua kē. Nā te wheako matū taketake kua pakari ki tāwāhi, e kore e taea te kore e kitea.
Paura rapa ka taea te whakamarara anō
1. Ko te paura rapa ka taea te whakamarara anō he paura ka taea te whakamarara anō wairewa-wai, he copolymer o te ethylene me te vinyl acetate, me te waipiro polyvinyl hei colloid tiaki.
2. He āhuatanga hanga kiriata te paura rapa VAE ka taea te whakamarara anō, ka hangaia he emulsion e te 50% o te wairewa, ā, ka hangaia he kiriata rite ki te kirihou i muri i te whakatakotoranga ki runga i te karāhe mō ngā haora 24.
3. He ngāwari, he ātete wai hoki te kiriata kua hangaia. Ka taea e ia te eke ki te paerewa ā-motu.
4. He tino pai te mahi a te paura rapa ka taea te whakamarara anō: he kaha ki te piri, he ahurei te mahi, ā, he tino pai te mahi ā-wai, he kaha te piri, he ātete ki te kawakore te moata, ā, ka taea te whakapai ake i te piri me te kaha piko o te moata. Haunga te kirihou, te ātete ki te kakahu me te hanganga, he kaha ake te ngāwari o te moata ārai-pakaru.
paura kapia
1. He momo whakarerekētanga hou te paura rapa kapia mō ngā hua pēnei i te rapa, te kapia, te pūmua ngota teitei, me te paura rapa tapatapahi rawa;
2. He roa te mau o te paura rapa kapia, he ātete ki te kakahu, he ngoikore te marara, he ahua pupuhi ētahi (me rite ki te rauemi porous pērā i te sepiolite), ā, he mā ngā paura (engari he kakara haunga rite ki te hinuhinu);
3. Ka waikura ētahi paura kapia ki te papa, ā, kāore i te pai te ārai wai.
4. He iti ake te ātete o te paura rapa kapia ki te huarere me te wai i ērā o te paura rapa. He raruraru nui te ātete ki te huarere. I te rā, ka mimiti wawe. Ahakoa kāore i te rā, ka tere ake te pirau o te hononga. Nā te hanganga o te kōhao;
5. Kāore e taea te hanga i te paura rapa kapia, ā, kāore anō kia ngāwari. E ai ki ngā paerewa whakamātautau mō te moata whakamarumaru pakitara o waho, ko te tere pakaru o te papa polystyrene anake e tutuki ana i te paerewa. Kāore ētahi atu tohu i te eke ki te paerewa;
6. Ka taea anake te whakamahi i te paura rapa kapia hei here i ngā papa polystyrene, kaua ki ngā pirepire whakakoi me ngā papa ātete ahi.
Wā tuku: Pipiri-02-2023