急急急~~~~哪位英语大神帮我翻译一下（化工类的翻译）。翻译好的加分！！！_百度知道
急急急~~~~哪位英语大神帮我翻译一下（化工类的翻译）。翻译好的加分！！！
5 mL、水的加入量以及尿素用量对聚乙烯醇缩甲醛胶粘剂性能的影响以聚乙烯醇和甲醛为原料、蒸馏水87；反应温度为90 ℃，各原料配比为。得出最佳工艺条件如下、反应温度.06 %.5 mL 、尿素1，游离甲醛含量为0.0.5g.6～8、甲醛用量。通过实验研究了pH值，反应时间为3 h，所得改性后的产物聚乙烯醇缩甲醛胶粘剂粘度为7，在水溶液中进行缩醛反应制备聚乙烯醇缩甲醛，制得尿素改性后的聚乙烯醇缩甲醛胶粘剂.5、反应时间，在聚乙烯醇缩甲醛中添加适量的尿素改性，反应pH值为2～2、甲醛4.5 g：聚乙烯醇12
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5mL, distilled water= 87.5mL: the ratios of raw materials: polyvinyl alcohol= 12.6 ~ 8The polyvinyl formal (PVFO) was firstly prepared by aldolizing the raw materials of polyvinyl alcohol and formaldehyde in aqueous solution, urea= 1, time= 3h, then it (PVFO) was modified by adding urea to prepare the urea-modified polyvinyl formal adhesive. The optimal process conditions observed were as follows, dosage of water and amount of urea on the properties of polyvinyl formal adhesive were researched in the experiment.06%,formaldehyde= 4, dosage of formaldehyde: temperature= 90℃, and the content of free formaldehyde is 0, time of reaction, pH value= 2~2. The viscosity of modified polyvinyl formal adhesive is 7, temperature of reaction.5.5g.5g; the reaction conditions. The impact of pH value
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谢谢你帮我翻译两次！由衷的感谢！
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PH is studied through experiments, the ratio of raw material, free formaldehyde content of 0.5 mL: polyvinyl alcohol 12; Reaction temperature is 90 ℃, reaction temperature and addition amount of water and urea dosage on the properties of the polyvinyl formal adhesive effect, urea formaldehyde, 4.5 mL distilled water.5 g, the viscosity of the product of modified polyvinyl formal adhesive is 7, 4, 87, the dosage of formaldehyde.0, reaction pH value is 2 ~ 2.5 g.6 ~ 8.06%Using polyvinyl alcohol and formaldehyde as raw materials, urea was modified polyvinyl formal adhesive, in adding the right amount of urea modified polyvinyl formaldehyde. Best process conditions were as follows, reaction time, reaction time is 3 h.5, in water solution response preparation of polyvinyl formal acetal
自己翻译的还是百度、google、有道翻译的？
Polyvinyl alcohol and formaldehyde as raw materials, was prepared by the reaction of polyvinyl formal Acetal in aqueous solution, adding urea in polyvinyl formal modified urea modified polyvinyl formal adhesive, prepared after. Through the study of pH value, dosage of formaldehyde, reaction time, reaction temperature, the influence of the amount of water and urea on the properties of polyvinyl formal adhesive. The obtained the better process condition, the ratio of raw materials: polyvinyl alcohol 12.5 g, 4.5 mL, formaldehyde urea 1.5g, distilled water 87.5 mL; the reaction temperature is 90 ℃, reaction time was 3 h, reaction pH value of 2 ~ 2.5, the modified product of polyvinyl formal adhesive viscosity is 7.6 ~ 8, the content of free formaldehyde 0.06%.
With polyvinyl alcohol and formaldehyde as raw material to produce polyvinyl acetal by reacting in aqueous solution, by adding proper amount of urea in the polyvinyl alcohol-formaldehyde for reform, finally got polyvinyl formal adhesive. Through experimental study on pH value, amount of formaldehyde, reaction time, temperature, water content, and influence of urea content on properties of polyvinyl formal adhesives. Reach optimum process conditions as follows, raw materials proportion: 12.5 g of polyvinyl alcohol, 4.5 mL of formaldehyde, urea 1.5G, 87.5 mL the reaction temperature of 90 ° c, the reaction time is 3 hrs, the reaction pH value is 2~2.5, the final product of modified polyvinyl formal adhesive viscosity is 7.6~8.0, free formaldehyde content is 0.06%.
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