一(yi)、遮(zhe)(zhe)(zhe)陽(yang)傘(san)(san)的(de)(de)材(cai)料(liao)：應是(shi)能夠阻擋紫(zi)外(wai)線(xian)（UV）的(de)(de)物(wu)質，好是(shi)緞子、滌綸或其(qi)他的(de)(de)微(wei)纖維材(cai)料(liao)。如果(guo)為了起見，可以選擇滌綸材(cai)料(liao)。一(yi)般材(cai)料(liao)/面(mian)料(liao)越厚(hou)，提供的(de)(de)保護就越好。從(cong)遮(zhe)(zhe)(zhe)陽(yang)與防(fang)紫(zi)外(wai)線(xian)的(de)(de)效果(guo)來看，建議(yi)選用表面(mian)為雙(shuang)遮(zhe)(zhe)(zhe)陽(yang)布(bu)的(de)(de)遮(zhe)(zhe)(zhe)陽(yang)傘(san)(san)，因為兩層(ceng)(ceng)(ceng)之間的(de)(de)隔熱效果(guo)，傘(san)(san)下溫(wen)度(du)很難上(shang)升(sheng)，這樣可以保護我們(men)的(de)(de)皮膚(fu)。同(tong)時，雙(shuang)層(ceng)(ceng)(ceng)布(bu)的(de)(de)遮(zhe)(zhe)(zhe)陽(yang)傘(san)(san)過濾紫(zi)外(wai)線(xian)效果(guo)也比單(dan)層(ceng)(ceng)(ceng)布(bu)的(de)(de)要好。

1、 The material of the sunshade umbrella should be a substance that can block ultraviolet rays (UV), such as satin, polyester, or other microfiber materials. If for safety reasons, polyester material can be chosen. The thicker the material/fabric, the better the protection provided. From the perspective of shading and UV protection effects, it is recommended to choose a sunshade umbrella with a double sunshade cloth surface, because the insulation effect between the two layers makes it difficult for the temperature under the umbrella to rise, which can protect our skin. Meanwhile, the sunshade umbrella made of double-layer fabric also has better UV filtering effect than that of single-layer fabric.

二、遮陽傘(san)(san)(san)的(de)顏色(se)：任何有紫外(wai)線防護指數的(de)傘(san)(san)(san)都(dou)有阻擋(dang)有害(hai)輻射的(de)能力，不過在面料相(xiang)同的(de)情況(kuang)下，深色(se)的(de)傘(san)(san)(san)防紫外(wai)線效果(guo)更好，一般深色(se)的(de)傘(san)(san)(san)布可以遮擋(dang)掉95%的(de)UVA。

2、 The color of sunshade umbrellas: Any umbrella with a UV protection index has the ability to block harmful radiation. However, when the fabric is the same, dark umbrellas have better UV protection effects. Generally, dark umbrella fabrics can block 95% of UVA.

UVA波段是紫(zi)(zi)外(wai)線(xian)波長劃分的一部分，波長320～420nm，又稱為(wei)長波黑(hei)(hei)斑效應紫(zi)(zi)外(wai)線(xian)，它有很強的穿透力(li)，UVA可(ke)以直達肌膚(fu)(fu)的真皮(pi)層，破壞彈(dan)性纖維和膠原(yuan)蛋白纖維，將皮(pi)膚(fu)(fu)曬黑(hei)(hei)。黑(hei)(hei)色(se)纖維材(cai)料(liao)的傘(san)比其(qi)他的傘(san)的遮擋UVA的效果更(geng)突出。因為(wei)黑(hei)(hei)色(se)可(ke)以大限度地吸收光線(xian)。其(qi)實，除了(le)直射的陽光紫(zi)(zi)外(wai)線(xian)外(wai)，地面反射的紫(zi)(zi)外(wai)線(xian)也會(hui)灼傷皮(pi)膚(fu)(fu)，黑(hei)(hei)傘(san)也可(ke)以吸收地面反射的紫(zi)(zi)外(wai)線(xian)。

The UVA band is a part of the wavelength division of ultraviolet radiation, with wavelengths ranging from 320 to 420nm, also known as long wave black spot effect ultraviolet radiation. It has strong penetration power and can directly reach the dermis of the skin, damaging elastic fibers and collagen fibers, and tanning the skin. Umbrellas made of black fiber material have a more prominent effect in blocking UVA than other umbrellas. Because black can absorb light to the fullest extent. In fact, in addition to direct sunlight and ultraviolet rays, the reflected ultraviolet rays from the ground can also burn the skin, and black umbrellas can absorb the reflected ultraviolet rays from the ground.

三、遮(zhe)陽傘(san)(san)(san)(san)的(de)(de)防(fang)曬指數（UPF）：確保(bao)你買(mai)的(de)(de)傘(san)(san)(san)(san)有必要的(de)(de)“保(bao)護標記”。要知道，任何(he)紫(zi)外線防(fang)曬指數大于30 (UPF 30+)的(de)(de)材料，以(yi)及限制紫(zi)外線穿(chuan)透在(zai)5%或更(geng)少(shao)的(de)(de)范圍內的(de)(de)遮(zhe)陽傘(san)(san)(san)(san)都能起(qi)到(dao)抵御紫(zi)外線輻射(she)的(de)(de)作用(yong)。旅行時，要使(shi)用(yong)UPF 50+的(de)(de)遮(zhe)陽傘(san)(san)(san)(san)。當然(ran)，UPF值夠用(yong)就(jiu)好，不要一味聽賣(mai)家忽悠。另外，買(mai)高UPF的(de)(de)傘(san)(san)(san)(san)好讓(rang)賣(mai)家出(chu)示下檢驗(yan)報(bao)告，尤(you)其網購的(de)(de)時候，防(fang)止(zhi)花冤枉(wang)錢。

3、 Sun Protection Index (UPF) of Umbrella: Ensure that the umbrella you buy has the necessary "protective markings". It should be noted that any material with a UV sun protection index greater than 30 (UPF 30+), as well as sunshades that limit UV penetration to 5% or less, can resist UV radiation. When traveling, use a UPF 50+sunshade umbrella. Of course, as long as the UPF value is sufficient, don't just listen to the seller's deception. In addition, buying umbrellas with high UPF allows sellers to present inspection reports, especially when shopping online, to prevent wasting money.

四、遮(zhe)陽傘(san)的(de)(de)(de)涂層：傘(san)的(de)(de)(de)反射(she)面積很大，傘(san)布內面好有黑色的(de)(de)(de)涂層，以(yi)(yi)避免再(zai)次反射(she)地面的(de)(de)(de)UVA臉(lian)部。現在市面上的(de)(de)(de)遮(zhe)陽傘(san)多(duo)以(yi)(yi)黑膠(jiao)(jiao)為主(zhu)，銀膠(jiao)(jiao)相對于黑膠(jiao)(jiao)而(er)言，具有容易(yi)脫落、防(fang)曬效果一般的(de)(de)(de)缺點，而(er)品質(zhi)好的(de)(de)(de)黑膠(jiao)(jiao)透光率可以(yi)(yi)達到幾乎為0，劣質(zhi)的(de)(de)(de)黑膠(jiao)(jiao)涂層可能(neng)含有致癌物(wu)質(zhi)，對身體(ti)造成傷害。遮(zhe)陽傘(san)中(zhong)涂層主(zhu)要是(shi)(shi)增加抗(kang)紫(zi)外線的(de)(de)(de)功能(neng)，其實質(zhi)的(de)(de)(de)抗(kang)紫(zi)外線的(de)(de)(de)物(wu)質(zhi)主(zhu)要是(shi)(shi)二氧化鈦。

4、 Coating for sunshade umbrellas: The umbrella has a large reflective area, and the inner surface of the umbrella fabric should have a black coating to avoid reflecting UVA from the ground to the face again. Nowadays, sunshade umbrellas on the market are mainly made of black glue. Compared to black glue, silver glue has the disadvantages of easy detachment and average sun protection effect. However, high-quality black glue can have a light transmittance of almost 0, and low-quality black glue coatings may contain carcinogens, which can cause harm to the body. The main function of the coating in sunshades is to increase their UV resistance, and its essential anti UV material is mainly titanium dioxide.

現在市場上(shang)(shang)宣傳(chuan)的(de)(de)(de)納米(mi)涂層也就是在織物纖(xian)維的(de)(de)(de)內部摻入吸收(shou)(shou)紫(zi)外(wai)線(xian)(xian)的(de)(de)(de)材料，或是在織物完成以(yi)(yi)后做后期(qi)整(zheng)理，滲(shen)入一些吸收(shou)(shou)紫(zi)外(wai)線(xian)(xian)的(de)(de)(de)材料，如(ru)納米(mi)級的(de)(de)(de)氧化鋅(xin)或二氧化鈦(tai)等，并無其(qi)他(ta)特別之(zhi)處，所(suo)(suo)以(yi)(yi)關(guan)鍵仍(reng)然是遮陽傘中抗紫(zi)外(wai)線(xian)(xian)物質的(de)(de)(de)含量的(de)(de)(de)多少。綜合以(yi)(yi)上(shang)(shang)所(suo)(suo)有建(jian)議好(hao)選擇(ze)黑(hei)膠涂層的(de)(de)(de)遮陽傘。

The nano coating currently promoted in the market refers to the addition of materials that absorb ultraviolet rays into the interior of fabric fibers, or the infiltration of some materials that absorb ultraviolet rays after finishing the fabric, such as nanoscale zinc oxide or titanium dioxide, without any other special features. Therefore, the key is still the amount of anti ultraviolet substances in the sunshade umbrella. Based on all the above suggestions, it is recommended to choose a sunshade umbrella with a black adhesive coating.

五、遮陽傘的(de)(de)(de)大(da)(da)小(xiao)：當(dang)你在長(chang)期(qi)在戶外(wai)選擇撐(cheng)傘的(de)(de)(de)時候(hou)，要選擇直(zhi)徑(jing)較大(da)(da)的(de)(de)(de)傘，以(yi)提供大(da)(da)的(de)(de)(de)保(bao)護和小(xiao)的(de)(de)(de)曝(pu)光(guang)量。因(yin)為(wei)紫(zi)外(wai)線是(shi)從(cong)各個(ge)方向照射的(de)(de)(de)，所以(yi)面(mian)積(ji)越大(da)(da)，能抵(di)擋(dang)紫(zi)外(wai)線的(de)(de)(de)效果越好。所以(yi)，挑選時好撐(cheng)開看看面(mian)積(ji)大(da)(da)小(xiao)。這也是(shi)為(wei)什么我(wo)們即使打著(zhu)遮陽傘，依然要涂防曬霜的(de)(de)(de)原因(yin)。

5、 The size of a sunshade umbrella: When choosing to hold an umbrella outdoors for a long time, choose an umbrella with a larger diameter to provide greater protection and lower exposure. Because ultraviolet rays are irradiated from all directions, the larger the area, the better the ability to resist ultraviolet rays. So, when choosing, it's good to spread it out and see the size of the area. This is also why we still need to apply sunscreen even when holding a sunshade umbrella.

六、傘架(jia)或(huo)傘骨(gu)(gu)：傘架(jia)或(huo)傘骨(gu)(gu)是使(shi)遮陽傘保(bao)持穩定的(de)(de)(de)。傘架(jia)是傘的(de)(de)(de)核心部件，好(hao)的(de)(de)(de)傘架(jia)要做到防(fang)銹、輕便、牢固(gu)、推拉(la)順(shun)暢(chang)。就材料(liao)而(er)言，好(hao)的(de)(de)(de)材料(liao)應該是碳纖維，輕而(er)堅固(gu)；其次是鋁(lv)合金，也是現在市面(mian)上多(duo)的(de)(de)(de)一(yi)種(zhong)。另外，中(zhong)桿截面(mian)的(de)(de)(de)邊越多(duo)越好(hao)，雙層套(tao)管比單層好(hao)。

6、 Umbrella frame or ribs: Umbrella frames or ribs are used to keep sunshades stable. The umbrella frame is the core component of an umbrella, and a good umbrella frame should be rust proof, lightweight, sturdy, and smoothly pushed and pulled. In terms of materials, a good material should be carbon fiber, which is light and sturdy; Next is aluminum alloy, which is also one of the most common types on the market today. In addition, the more edges in the cross-section of the middle rod, the better, and double-layer casing is better than single-layer casing.

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